{ "name": "HCPortal AI Decipherment Register", "url": "https://ai.hcportal.eu/register/", "count": 1955, "records": [ { "submitted": "2026-11-12", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1039", "name": "cpc_1900-03-24_DE_Berlin_DE_Berlin_", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, partial key reconstruction, decipherment, validation", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_1039_report.pdf", "number": 1955 }, { "submitted": "2026-11-12", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1035", "name": "cpc_1902-07-19_DE_Cismar_DE_Hamburg_", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, partial decipherment, validation", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_1035_report.pdf", "number": 1954 }, { "submitted": "2026-11-12", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1040", "name": "cpc_1908-10-01_DE_Iserlohn_DE_Wilhelmshaven_", "type": "MASC/partial", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment, validation", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_1040_report.pdf", "number": 1953 }, { "submitted": "2026-11-10", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1203", "name": "cpc_--23_HU__HU_Rakos Palota Ujfalu_jolanka-88", "type": "MASC + Steganography", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction and transfer, partial decipherment, steganographic inspection", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_Jolanka_88_report.pdf", "number": 1952 }, { "submitted": "2026-11-10", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1206", "name": "cpc_--_HU_Jasz_HU_Ujpest - Budapest_jolanka-61", "type": "Steganography", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, steganographic inspection, partial reading", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_Jolanka_61_report.pdf", "number": 1951 }, { "submitted": "2026-11-10", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1219", "name": "cpc_--_HU__HU_Jasz Arokszalas_jolanka-65", "type": "MASC + Steganography", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction and transfer, partial decipherment, steganographic inspection", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_Jolanka_65_report.pdf", "number": 1950 }, { "submitted": "2026-11-10", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1202", "name": "cpc_--_HU__HU_Rakos Palota Ujfalu_jolanka-58", "type": "MASC + Steganography", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction and transfer, partial decipherment, steganographic inspection", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_Jolanka_58_report.pdf", "number": 1949 }, { "submitted": "2026-11-10", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1204", "name": "cpc_--_HU__HU_Rakos Palota Ujfalu_jolanka-59", "type": "MASC + Steganography", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction and transfer, partial decipherment, steganographic inspection", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_Jolanka_59_report.pdf", "number": 1948 }, { "submitted": "2026-11-10", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1238", "name": "cpc_1914--_HU__HU_Jasz Arokszalas_jolanka-118", "type": "MASC + Steganography", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction and transfer, partial decipherment, steganographic inspection", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_Jolanka_118_report.pdf", "number": 1947 }, { "submitted": "2026-11-10", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1209", "name": "cpc_1914-11-23_HU__HU_Budapest_jolanka-56", "type": "Steganography", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, steganographic inspection, partial reading", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_Jolanka_56_report.pdf", "number": 1946 }, { "submitted": "2026-11-10", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1215", "name": "cpc_1914-11-28_HU__HU_helyben (locally) Budapest_jolanka-57", "type": "Steganography", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, steganographic inspection, partial reading", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_Jolanka_57_report.pdf", "number": 1945 }, { "submitted": "2026-11-10", "solver": "Prabal Gupta", "source": "https://dbourdeau.github.io/cyphersolver/agad131.html", "name": "Unsigned writer ('manu notus', probably Matuszewicz) to a patron in the Branicki circle, Wilno, 11 Jul 1757 (AGAD Warsaw, zesp. 338, 1/338/0/1/131)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6.1 Sol", "role": "key transfer: external key matched and applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/agad131", "number": 1944 }, { "submitted": "2026-11-10", "solver": "Prabal Gupta", "source": "https://dbourdeau.github.io/cyphersolver/toledo1479.html", "name": "Unsigned writer at the court of Castile to Lorenzo de' Medici, Toledo, 31 Aug 1479 (ASF, Mediceo avanti il Principato LXXII, doc. 171)", "type": "Nomenclator", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/toledo1479", "number": 1943 }, { "submitted": "2026-11-09", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/azuares1837.html", "name": "Manuel Azuares to the First Secretary of State of Carlos V, London, 8 Sep 1837, letter no. 780, duplicate (AHN Madrid, DIVERSOS-COLECCIONES,161,N.2)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/azuares1837", "number": 1942 }, { "submitted": "2026-11-09", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/anker1814.html", "name": "Carsten Anker to Prince Christian Frederik, London, leaf of 28 Jun 1814 (Riksarkivet Oslo, RA-EA-5938 Christian Frederik, F/Fc/L0217/0002, PDF p. 59)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from external plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/anker1814", "number": 1941 }, { "submitted": "2026-11-09", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/pandolfini1514.html", "name": "[Francesco Pandolfini] to Rome, copy, French court [Paris], 20 Oct [1514] (ASF, Mediceo avanti il Principato LXXII, doc. 322, c. 401r)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from external plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/pandolfini1514", "number": 1940 }, { "submitted": "2026-11-09", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/pandolfini1514.html", "name": "Francesco Pandolfini to Lorenzo de' Medici, Rome, French court [Paris], 27 Dec 1514 (ASF, Mediceo avanti il Principato LXXII, doc. 333, c. 417r)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from external plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/pandolfini1514", "number": 1939 }, { "submitted": "2026-11-09", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/pandolfini1514.html", "name": "Francesco Pandolfini to the Otto di Pratica, Florence, copy sent to Lorenzo de' Medici, French court [Paris], 16 Feb 1515 (ASF, Mediceo avanti il Principato LXXII, doc. 307, c. 369r)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from external plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/pandolfini1514", "number": 1938 }, { "submitted": "2026-11-09", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/pandolfini1514.html", "name": "Francesco Pandolfini to Lorenzo de' Medici, Rome, French court [Paris], 26 Feb 1515 (ASF, Mediceo avanti il Principato LXXII, doc. 309, c. 378r)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from external plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/pandolfini1514", "number": 1937 }, { "submitted": "2026-11-09", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/pandolfini1514.html", "name": "Francesco Pandolfini to the Otto di Pratica, Florence, copy sent to Lorenzo de' Medici, French court [Paris], 26 Feb-2 Mar 1515 (ASF, Mediceo avanti il Principato LXXII, doc. 310, cc. 380r-381v)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from external plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/pandolfini1514", "number": 1936 }, { "submitted": "2026-11-09", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/pandolfini1514.html", "name": "Francesco Pandolfini to the Otto di Pratica, Florence, copy, French court [Paris], 4 Mar 1515 (ASF, Mediceo avanti il Principato LXXII, doc. 311, cc. 382r-v)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from external plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/pandolfini1514", "number": 1935 }, { "submitted": "2026-11-09", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/thumbshirn1647.html", "name": "[Wolfgang Conrad von Thumbshirn, Saxe-Altenburg envoy at the Westphalian congress] to Johann Friedrich von Brand, undated postscript, late 1648/early 1649 (StA Altenburg, Schönbergische Sammlung Nr. 85, fol. 399, image 0837)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/thumbshirn1647", "number": 1934 }, { "submitted": "2026-11-09", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/schoenberg1665.html", "name": "Schönberg's journal of the Dresden negotiations (Wettin houses and Electoral Mainz over Erfurt), Dresden, early Dec 1665, cipher passage (StA Altenburg, Schönbergische Sammlung Nr. 107, fol. 114r, image 0233)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/schoenberg1665", "number": 1933 }, { "submitted": "2026-11-09", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/flak1940.html", "name": "Luftgaukommando VII to Flugabwehrkommando Schwarzwald, radio message, 17 May 1940 (NARA RG 242, T405 roll 9, frame 0993)", "type": "Transposition", "model": "Combination", "version": "Claude Fable 5.1; Claude Sonnet (version not reported); GPT-6 Astra", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/flak1940", "number": 1932 }, { "submitted": "2026-11-09", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/flak1940.html", "name": "Flugabwehrkommando Schwarzwald Ic, radio message, 17 May 1940 (NARA RG 242, T405 roll 9, frames 1025-1027)", "type": "Transposition", "model": "Combination", "version": "Claude Fable 5.1; Claude Sonnet (version not reported); GPT-6 Astra", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/flak1940", "number": 1931 }, { "submitted": "2026-11-09", "solver": "William Echols", "source": "https://dbourdeau.github.io/cyphersolver/hernandez1911.html", "name": "Federico González Garza to Braulio Hernández, El Paso to Presidio, Texas, telegram, 27 Mar 1911 (CEHM-Carso, Fondo CMXV.15.1420.3-6)", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/hernandez1911", "number": 1930 }, { "submitted": "2026-11-09", "solver": "William Echols", "source": "https://dbourdeau.github.io/cyphersolver/roosevelt1903.html", "name": "Theodore Roosevelt to John Hay, Secretary of State, telegram, 27 May 1903 (Library of Congress, Theodore Roosevelt Papers, reel 413, frame 0026)", "type": "Code", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "key transfer: external key matched and applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/roosevelt1903", "number": 1929 }, { "submitted": "2026-11-08", "solver": "Prabal Gupta", "source": "https://dbourdeau.github.io/cyphersolver/exiles1736.html", "name": "Unsigned Polish exile in Prussia to an unnamed addressee (Monseigneur; card guesses Branicka), 4 Feb [1736] (AGAD Warsaw, zesp. 338, 1/338/0/1/1401)", "type": "Nomenclator", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/exiles1736", "number": 1928 }, { "submitted": "2026-11-08", "solver": "Prabal Gupta", "source": "https://dbourdeau.github.io/cyphersolver/guastalla1717.html", "name": "Antonio Ferdinando Gonzaga, Duke of Guastalla, to an unnamed correspondent, Guastalla, 24 Sep 1717 (Biblioteca Estense, Autografoteca Campori, Lettera A, Antonio Ferdinando duca di Guastalla, cc. 15-16)", "type": "Nomenclator", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/guastalla1717", "number": 1927 }, { "submitted": "2026-11-08", "solver": "Prabal Gupta", "source": "https://dbourdeau.github.io/cyphersolver/carranza1915.html", "name": "Venustiano Carranza to Ildefonso Vásquez, Nuevo Laredo, Veracruz, 17 May 1915, telegram (CEHM-Carso, Fondo CDLXXX.1.17.1)", "type": "Homophonic substitution", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/carranza1915", "number": 1926 }, { "submitted": "2026-11-08", "solver": "Prabal Gupta", "source": "https://dbourdeau.github.io/cyphersolver/carranza1915.html", "name": "Venustiano Carranza to General Vicente Dávila, Nuevo Laredo, Veracruz, 17 May 1915, telegram (CEHM-Carso, Fondo CDLXXX.1.22.1)", "type": "Homophonic substitution", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/carranza1915", "number": 1925 }, { "submitted": "2026-11-08", "solver": "Prabal Gupta", "source": "https://dbourdeau.github.io/cyphersolver/carranza1915.html", "name": "Venustiano Carranza to General Alfredo Ricaut, Nuevo Laredo, Veracruz, 17 May 1915, telegram (CEHM-Carso, Fondo CDLXXX.1.23.1)", "type": "Homophonic substitution", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/carranza1915", "number": 1924 }, { "submitted": "2026-11-08", "solver": "Prabal Gupta", "source": "https://dbourdeau.github.io/cyphersolver/carranza1915.html", "name": "Venustiano Carranza to General Álvaro Obregón, Estación Trinidad, Veracruz, 17 May 1915, telegram (CEHM-Carso, Fondo CDLXXX.1.24.1)", "type": "Homophonic substitution", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/carranza1915", "number": 1923 }, { "submitted": "2026-11-08", "solver": "Prabal Gupta", "source": "https://dbourdeau.github.io/cyphersolver/carranza1915.html", "name": "Venustiano Carranza to Eliseo Arredondo, Washington, Veracruz, 17 May 1915, telegram (CEHM-Carso, Fondo CDLXXX.1.29.1)", "type": "MASC", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/carranza1915", "number": 1922 }, { "submitted": "2026-11-08", "solver": "Prabal Gupta", "source": "https://dbourdeau.github.io/cyphersolver/carranza1915.html", "name": "Venustiano Carranza to R. P. Denegri, San Francisco, Veracruz, 18 May 1915, telegram (CEHM-Carso, Fondo CDLXXX.1.32.1)", "type": "MASC", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/carranza1915", "number": 1921 }, { "submitted": "2026-11-08", "solver": "Prabal Gupta", "source": "https://dbourdeau.github.io/cyphersolver/carranza1915.html", "name": "Venustiano Carranza's private secretary to Lt. Col. Aarón Sáenz, care of General Obregón, Veracruz, 18 May 1915, telegram (CEHM-Carso, Fondo CDLXXX.1.33.1)", "type": "Homophonic substitution", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/carranza1915", "number": 1920 }, { "submitted": "2026-11-08", "solver": "Prabal Gupta", "source": "https://dbourdeau.github.io/cyphersolver/carranza1915.html", "name": "Venustiano Carranza to Eliseo Arredondo, Washington, Veracruz, 9 Jun 1915, telegram (CEHM-Carso, Fondo CDLXXX.1.39.1)", "type": "MASC", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/carranza1915", "number": 1919 }, { "submitted": "2026-11-08", "solver": "Prabal Gupta", "source": "https://dbourdeau.github.io/cyphersolver/carranza1915.html", "name": "Venustiano Carranza to Francisco S. Elías, New York, Veracruz, 9 Jun 1915, telegram (CEHM-Carso, Fondo CDLXXX.1.40.1)", "type": "MASC", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/carranza1915", "number": 1918 }, { "submitted": "2026-11-08", "solver": "Prabal Gupta", "source": "https://dbourdeau.github.io/cyphersolver/carranza1915.html", "name": "Venustiano Carranza to General Pablo González, Apizaco, Veracruz, 9 Jun 1915, telegram (CEHM-Carso, Fondo CDLXXX.1.42.1)", "type": "Homophonic substitution", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/carranza1915", "number": 1917 }, { "submitted": "2026-11-08", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/soviet1919.html", "name": "Communist secretariat in Germany to Soviet officials in Russia, courier letter, Anfang, 23 Dec 1919 (NARA RG 59, 862.20261, M336 roll 75, frame 0462)", "type": "Transposition", "model": "Anthropic Claude", "version": "Claude (version not reported)", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/soviet1919", "number": 1916 }, { "submitted": "2026-11-08", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/soviet1919.html", "name": "Communist secretariat in Germany to Soviet officials in Russia, courier letter, Fortsetzung 2, 23 Dec 1919 (NARA RG 59, 862.20261, M336 roll 75, frame 0462)", "type": "Transposition", "model": "Anthropic Claude", "version": "Claude (version not reported)", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/soviet1919", "number": 1915 }, { "submitted": "2026-11-08", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/soviet1919.html", "name": "Communist secretariat in Germany to Soviet officials in Russia, courier letter, Fortsetzung 3, 23 Dec 1919 (NARA RG 59, 862.20261, M336 roll 75, frame 0462)", "type": "Transposition", "model": "Anthropic Claude", "version": "Claude (version not reported)", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/soviet1919", "number": 1914 }, { "submitted": "2026-11-08", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/soviet1919.html", "name": "Communist secretariat in Germany to Soviet officials in Russia, courier letter, Fortsetzung 4, 23 Dec 1919 (NARA RG 59, 862.20261, M336 roll 75, frame 0462)", "type": "Transposition", "model": "Anthropic Claude", "version": "Claude (version not reported)", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/soviet1919", "number": 1913 }, { "submitted": "2026-11-08", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/soviet1919.html", "name": "Communist secretariat in Germany to Soviet officials in Russia, courier letter, Fortsetzung 5, 23 Dec 1919 (NARA RG 59, 862.20261, M336 roll 75, frame 0463)", "type": "Transposition", "model": "Anthropic Claude", "version": "Claude (version not reported)", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/soviet1919", "number": 1912 }, { "submitted": "2026-11-08", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/soviet1919.html", "name": "Communist secretariat in Germany to Soviet officials in Russia, courier letter, Schlussmitteilungen, 25 Dec 1919 (NARA RG 59, 862.20261, M336 roll 75, frame 0463)", "type": "Transposition", "model": "Anthropic Claude", "version": "Claude (version not reported)", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/soviet1919", "number": 1911 }, { "submitted": "2026-11-08", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/soviet1919.html", "name": "Communist secretariat in Germany to Soviet officials in Russia, courier letter, Zusatz, 19 Feb 1920 (NARA RG 59, 862.20261, M336 roll 75, frame 0464)", "type": "Transposition", "model": "Anthropic Claude", "version": "Claude (version not reported)", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/soviet1919", "number": 1910 }, { "submitted": "2026-11-07", "solver": "Prabal Gupta", "source": "https://dbourdeau.github.io/cyphersolver/branicki1757.html", "name": "Hetman Jan Klemens Branicki to Antoni Potocki, palatine of Bełz, Białystok, 22 Mar 1757 (AGAD Warsaw, zesp. 338, 1/338/0/1/446)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported)", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/branicki1757", "number": 1909 }, { "submitted": "2026-11-07", "solver": "Prabal Gupta", "source": "https://dbourdeau.github.io/cyphersolver/branicki1757.html", "name": "Marcin Matuszewicz to a patron (the Grand Général de la couronne), Kaunas, 24 Jul 1757 (AGAD Warsaw, zesp. 338, 1/338/0/1/1398)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported)", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/branicki1757", "number": 1908 }, { "submitted": "2026-11-07", "solver": "Prabal Gupta", "source": "https://dbourdeau.github.io/cyphersolver/branicki1757.html", "name": "Unknown writer (probably Boeven, Radziwiłł's secretary) to a correspondent in the French interest, Nieśwież, 1756 (before Aug) (AGAD Warsaw, zesp. 338, 1/338/0/1/1399)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported)", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/branicki1757", "number": 1907 }, { "submitted": "2026-11-07", "solver": "Prabal Gupta", "source": "https://dbourdeau.github.io/cyphersolver/branicki1757.html", "name": "Boeven to a correspondent in the French interest, Nieśwież, 11 Sep 1756 (AGAD Warsaw, zesp. 338, 1/338/0/1/1400)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported)", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/branicki1757", "number": 1906 }, { "submitted": "2026-11-07", "solver": "Prabal Gupta", "source": "https://dbourdeau.github.io/cyphersolver/gonzaga1542.html", "name": "Charles V to Ferrante Gonzaga, viceroy of Sicily, Monzón, 11 Aug 1542 (Biblioteca Estense, Autografoteca Campori, Lettera K, Karl V, sfasc. IV, cc. 109-110)", "type": "Homophonic substitution", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/gonzaga1542", "number": 1905 }, { "submitted": "2026-11-06", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/dahku1715.html", "name": "'Dahka' (catalogued Dahku) to a member of the Branicki circle, Cracow, [21 Sep] 1715 (AGAD Warsaw, zesp. 338, 1/338/0/1/682, scan 3)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/dahku1715", "number": 1904 }, { "submitted": "2026-11-06", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/delcarretto1576.html", "name": "Alfonso II del Carretto, marquis of Finale, to his agents Lodovico Allaria and Paolo Fenocchio in Milan, Regensburg, 2 Sep 1576 (Biblioteca Estense, Autografoteca Campori, Lettera D, Del Carretto, c. 10)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/delcarretto1576", "number": 1903 }, { "submitted": "2026-11-06", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/dormer1694.html", "name": "\"Ex Conde\" (unidentified) to Diego José Dormer, Catalonia, undated slip wholly in cipher, before Jun 1694 (BNE MSS/8387, fol. 190r-v)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/dormer1694", "number": 1902 }, { "submitted": "2026-11-06", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/dormer1694.html", "name": "\"Ex Conde\", \"Rojo\", \"Zabulón\", \"El Chismoso\" to Diego José Dormer, Barcelona, Mataró, Hostalric and Zaragoza, 1693-1696, ciphered passages in letters in clear (BNE MSS/8387, views 132-193)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/dormer1694", "number": 1901 }, { "submitted": "2026-11-06", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/deboli1787.html", "name": "Antoni Augustyn Deboli to King Stanisław August, St Petersburg, 29 Dec 1786 (AGAD Zbiór Popielów 3, piece p01, scans 4-5)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/deboli1787", "number": 1900 }, { "submitted": "2026-11-06", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/deboli1787.html", "name": "Antoni Augustyn Deboli to King Stanisław August, St Petersburg, 9 Jan 1787 (AGAD Zbiór Popielów 3, piece p04, scans 14-15)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/deboli1787", "number": 1899 }, { "submitted": "2026-11-06", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/deboli1787.html", "name": "Antoni Augustyn Deboli to King Stanisław August, St Petersburg, 18 Jan 1787 (AGAD Zbiór Popielów 3, piece p07, scans 21-26)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/deboli1787", "number": 1898 }, { "submitted": "2026-11-06", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/deboli1787.html", "name": "Antoni Augustyn Deboli to King Stanisław August, St Petersburg, 27 Jul 1787 (AGAD Zbiór Popielów 3, piece p13, scans 49-50)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/deboli1787", "number": 1897 }, { "submitted": "2026-11-06", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/deboli1787.html", "name": "Antoni Augustyn Deboli to King Stanisław August, St Petersburg, 31 Aug 1787 (AGAD Zbiór Popielów 3, piece p15, scans 57-58)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/deboli1787", "number": 1896 }, { "submitted": "2026-11-06", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/deboli1787.html", "name": "Antoni Augustyn Deboli to King Stanisław August, St Petersburg, 17 Aug 1787 (AGAD Zbiór Popielów 3, piece p21, scans 75-76)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/deboli1787", "number": 1895 }, { "submitted": "2026-11-06", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/deboli1787.html", "name": "Antoni Augustyn Deboli to King Stanisław August, St Petersburg, 14 Sep 1787 (AGAD Zbiór Popielów 3, piece p23, scans 80-81)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/deboli1787", "number": 1894 }, { "submitted": "2026-11-06", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/deboli1787.html", "name": "Antoni Augustyn Deboli to King Stanisław August, St Petersburg, 25 Sep 1787 (AGAD Zbiór Popielów 3, piece p28, scans 98-99)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/deboli1787", "number": 1893 }, { "submitted": "2026-11-06", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/deboli1787.html", "name": "Antoni Augustyn Deboli to King Stanisław August, St Petersburg, 3 Aug 1787 (AGAD Zbiór Popielów 3, piece p30, scans 104-105)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/deboli1787", "number": 1892 }, { "submitted": "2026-11-06", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/deboli1787.html", "name": "Antoni Augustyn Deboli to King Stanisław August, St Petersburg, 7 Oct 1787 (AGAD Zbiór Popielów 3, piece p33, scans 114-115)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/deboli1787", "number": 1891 }, { "submitted": "2026-11-06", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/deboli1787.html", "name": "Antoni Augustyn Deboli to King Stanisław August, St Petersburg, 16 Oct 1787 (AGAD Zbiór Popielów 3, piece p37, scans 122-124)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/deboli1787", "number": 1890 }, { "submitted": "2026-11-06", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/deboli1787.html", "name": "Gołuchowski to a minister of King Stanisław August, St Petersburg, 13 Feb 1787 (AGAD Zbiór Popielów 3, piece g1, scans 36)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/deboli1787", "number": 1889 }, { "submitted": "2026-11-06", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/deboli1787.html", "name": "Gołuchowski to a minister of King Stanisław August, St Petersburg, 30 Mar 1787 (AGAD Zbiór Popielów 3, piece g3, scans 39-40)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/deboli1787", "number": 1888 }, { "submitted": "2026-11-06", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/deboli1787.html", "name": "Gołuchowski to a minister of King Stanisław August, St Petersburg, 18 May 1787 (AGAD Zbiór Popielów 3, piece g4, scans 41-43)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/deboli1787", "number": 1887 }, { "submitted": "2026-11-06", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/lannoy1527.html", "name": "Lope de Soria to Charles de Lannoy, viceroy of Naples, Genoa, 7 Mar 1527 (Biblioteca Estense, Autografoteca Campori, Lettera L, Lope de Soria, cc. 9-12)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/lannoy1527", "number": 1886 }, { "submitted": "2026-11-06", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/mazzinghi1478.html", "name": "Giovanni Mazzinghi to the Medici, [Rome], 16 Jan 1478 st. fior. (1479) (ASF, Mediceo avanti il Principato LXXXIX 142)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from external plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/mazzinghi1478", "number": 1885 }, { "submitted": "2026-11-06", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/mazzinghi1478.html", "name": "Unsigned writer (same hand as Mazzinghi) to the Medici, [Rome], 13 Jan 1478 st. fior. (1479) (ASF, Mediceo avanti il Principato CXXXVII 252)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from external plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/mazzinghi1478", "number": 1884 }, { "submitted": "2026-11-05", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/ariosto1559.html", "name": "Ercole II d'Este to his secretary Claudio Ariosto, Ferrara, 23 Apr 1559 (Biblioteca Estense, Autografoteca Campori, Lettera E, Ercole II d'Este, cc. 39-41)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/ariosto1559", "number": 1883 }, { "submitted": "2026-11-05", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/burr1804.html", "name": "Aaron Burr to Joseph Alston, New York, [c. 18-21 Jul] 1804, unsigned (Gilder Lehrman Collection, GLC01523, clear page)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/burr1804", "number": 1882 }, { "submitted": "2026-11-05", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/burr1808.html", "name": "Aaron Burr to Theodosia Burr Alston, Baltimore, 31 Jan [1808] (copy sent with the 10 Feb letter) (Gilder Lehrman Collection, GLC01523, sheet pencilled 1523A, sections B-C)", "type": "Polyalphabetic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/burr1808", "number": 1881 }, { "submitted": "2026-11-05", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/burr1808.html", "name": "Aaron Burr to Theodosia Burr Alston, Baltimore, 10 Feb [1808] (Gilder Lehrman Collection, GLC01523, sheet pencilled 1523A, section A)", "type": "Polyalphabetic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/burr1808", "number": 1880 }, { "submitted": "2026-11-05", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/burr1808.html", "name": "Aaron Burr to Theodosia Burr Alston, Baltimore, 18 Feb [1808] (Gilder Lehrman Collection, GLC01523, sheet docketed 'Balt.' and '1808')", "type": "Polyalphabetic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/burr1808", "number": 1879 }, { "submitted": "2026-11-05", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/smolensk1633.html", "name": "Officials and citizens of the Smolensk palatinate, besieged in Smolensk, to Krzysztof Radziwiłł, Lithuanian field hetman, 1 Jun 1633 (AGAD, Archiwum Warszawskie Radziwiłłów dz. II nr 1116)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/smolensk1633", "number": 1878 }, { "submitted": "2026-11-04", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/125", "name": "MZV message No. 12009/1940", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_MZV_125_report.pdf", "number": 1877 }, { "submitted": "2026-11-04", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/128", "name": "MZV message No. 6315/1940", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_MZV_128_report.pdf", "number": 1876 }, { "submitted": "2026-11-04", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/144", "name": "MZV message No. 6701/1940", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_MZV_144_report.pdf", "number": 1875 }, { "submitted": "2026-11-04", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/dole1636.html", "name": "Archbishop F. de Rye and Parlement of Dole to Marquis of Conflans and Girardot de Beauchemin, Dole, 7 June 1636 (Besançon BM Ms 1594 fol. 127)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/dole1636", "number": 1874 }, { "submitted": "2026-11-04", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/dole1636.html", "name": "Commis au gouvernement to Conflans and Beauchemin, Dole, 25 June 1636, ciphered copy (Besançon BM Ms 1594 fol. 183)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/dole1636", "number": 1873 }, { "submitted": "2026-11-04", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/dole1636.html", "name": "Commis au gouvernement to Conflans and Beauchemin, Dole, 25 June 1636, second ciphered copy, right edge lost (Besançon BM Ms 1594 fol. 181)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/dole1636", "number": 1872 }, { "submitted": "2026-11-04", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/dole1636.html", "name": "Antoine Brun, procureur général, to Conflans and Beauchemin, Dole, [1 July 1636] (Besançon BM Ms 1594 fols. 191r-v)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/dole1636", "number": 1871 }, { "submitted": "2026-11-04", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/dole1636.html", "name": "Archbishop F. de Rye and Parlement of Dole to Conflans and Beauchemin, Dole, 22 July 1636 (Besançon BM Ms 1594 fol. 200r)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/dole1636", "number": 1870 }, { "submitted": "2026-11-04", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/geleen1633.html", "name": "Anselm Casimir of Mainz and Ferdinand of Cologne to Gottfried Huyn von Geleen, [Cologne], 22 Oct 1633 (BSB Clm 10406 no. 206, fols. 184r-185v)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/geleen1633", "number": 1869 }, { "submitted": "2026-11-03", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1201", "name": "cpc_1901-03-05_DE_Kiel_DE_Zeitz_hedwigzipfel-13", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key reconstruction, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1201", "number": 1868 }, { "submitted": "2026-11-03", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1197", "name": "cpc_1899-02-14_DE_Frankfurt Sachsenhausen_DE__", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key reconstruction, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1197", "number": 1867 }, { "submitted": "2026-11-03", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1195", "name": "cpc_1900-02-25_AT_Tepi_AT_Wien_schoenfelder-01", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key reconstruction, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1195", "number": 1866 }, { "submitted": "2026-11-03", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1194", "name": "cpc_1900-06-17_AT_Tepi_AT_Wien_schoenfelder-02", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key reconstruction, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1194", "number": 1865 }, { "submitted": "2026-11-03", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1192", "name": "cpc_1906-11-06_USA_Cobleskill. NY_USA__", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key reconstruction, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1192", "number": 1864 }, { "submitted": "2026-11-03", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1191", "name": "cpc_1907-09-07_USA_Coshocton, Ohio_USA_Canal, Lewisville, Ohio_", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key reconstruction, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1191", "number": 1863 }, { "submitted": "2026-11-03", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1186", "name": "cpc_1904-10-12_UK_Dorchester_UK_Dorchester_", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key reconstruction, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1186", "number": 1862 }, { "submitted": "2026-11-03", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1183", "name": "cpc_-06-25_USA_Santa Clara, California_USA_San Jose, California_", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key reconstruction, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1183", "number": 1861 }, { "submitted": "2026-11-03", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1182", "name": "cpc_1909-10-16_DE_Berlin_DE_Lichtenrade_", "type": "MASC/Morse", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1182", "number": 1860 }, { "submitted": "2026-11-03", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1180", "name": "cpc_--___CH_Neuchatel_", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key reconstruction, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1180", "number": 1859 }, { "submitted": "2026-11-03", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1134", "name": "cpc_1910-03-11_DE_Schweidnitz_DE_Schweidnitz_fritzlehmann-10", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key reconstruction, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1134", "number": 1858 }, { "submitted": "2026-11-03", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1133", "name": "cpc_1902-12-18_HU__HU_Helyben_", "type": "MASC/Morse", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1133", "number": 1857 }, { "submitted": "2026-11-03", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1132", "name": "cpc_--_HU_Debrecen_HU__", "type": "MASC/Morse", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key reconstruction, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1132", "number": 1856 }, { "submitted": "2026-11-03", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1113", "name": "cpc_1909-07-30_DE_Freiburg (Schlesien)_DE_Hier_fritzlehmann-06", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1113", "number": 1855 }, { "submitted": "2026-11-03", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1101", "name": "cpc_1898-02-11_CH_Basel_CH_Basel_", "type": "Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1101", "number": 1854 }, { "submitted": "2026-11-03", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1100", "name": "cpc_1908-10-30_UK_Clapham_UK_Somerset_", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key reconstruction, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1100", "number": 1853 }, { "submitted": "2026-11-03", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1097", "name": "cpc_1909-11-01_USA_Somersford, Nebraska_USA_Somerford, Nebraska_", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key reconstruction, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1097", "number": 1852 }, { "submitted": "2026-11-03", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1095", "name": "cpc_1905-06-23_USA_Fultonville, NY_USA_Fultonville, NY_", "type": "MASC/Morse", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1095", "number": 1851 }, { "submitted": "2026-11-03", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1094", "name": "cpc_1912-03-0_AT_Schneegattern_AT_Schneegattern_", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key reconstruction, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1094", "number": 1850 }, { "submitted": "2026-11-03", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1091", "name": "cpc_1886-03-12_AT_Wien_AT_Krems_", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key reconstruction, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1091", "number": 1849 }, { "submitted": "2026-11-03", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1090", "name": "cpc_1911-04-01_DE_Oppenau_DE_Goggingen_", "type": "MASC/Morse", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1090", "number": 1848 }, { "submitted": "2026-11-03", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1082", "name": "cpc_1942-08-27_FR_Loiret, Gare des Aubres_FR_Nantes_", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key reconstruction, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1082", "number": 1847 }, { "submitted": "2026-11-03", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1077", "name": "cpc_1908-01-10_DE_Fechenheim_DE_Fechenheim_", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key reconstruction, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1077", "number": 1846 }, { "submitted": "2026-11-03", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1075", "name": "cpc_--_USA__USA__", "type": "MASC/Morse", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1075", "number": 1845 }, { "submitted": "2026-11-03", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1073", "name": "cpc_1910-07-13_DE_Aschersleben_DE_Hier_hugocarl-01", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key reconstruction, 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"cpc_1901-06-15_DE_Dortmund_DE_Dortmund_fritzsalmen-18", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_FritzSalmen_18_report.pdf", "number": 1803 }, { "submitted": "2026-11-03", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1087", "name": "cpc_1901-10-18_DE_Dortmund_DE_Hier_fritzsalmen-20", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_FritzSalmen_20_report.pdf", "number": 1802 }, { "submitted": "2026-11-03", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1088", "name": "cpc_1902-05-02_DE_Dortmund_DE_Hier_fritzsalmen-27", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_FritzSalmen_27_report.pdf", "number": 1801 }, { "submitted": "2026-11-03", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1089", "name": "cpc_1902-05-_DE_Dortmund_DE_Dortmund_fritzsalmen-34", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_FritzSalmen_34_report.pdf", "number": 1800 }, { "submitted": "2026-11-03", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1235", "name": "cpc_1912--20_HU__HU_Jasz Arokszalas_jolanka-101", "type": "MASC + Steganography", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_Jolanka_101_report.pdf", "number": 1799 }, { "submitted": "2026-11-03", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1225", "name": "cpc_1912-02-29_HU__HU_Jasz Arokszalas_jolanka-06", "type": "MASC + Steganography", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_Jolanka_06_report.pdf", "number": 1798 }, { "submitted": "2026-11-03", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1231", "name": "cpc_1914--22_HU__HU_Jasz Arokszalas_jolanka-120", "type": "MASC + Steganography", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_Jolanka_120_report.pdf", "number": 1797 }, { "submitted": "2026-11-03", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1229", "name": "cpc_1914-01-07_HU__HU_Jasz Arokszalas_jolanka-46", "type": "MASC + Steganography", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_Jolanka_46_report.pdf", "number": 1796 }, { "submitted": "2026-11-03", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1280", "name": "cpc_1912-03-13_HU__HU_Jasz Arokszalas_jolanka-09", "type": "MASC + Steganography", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_Jolanka_09_report.pdf", "number": 1795 }, { "submitted": "2026-11-03", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1294", "name": "cpc_1912-03-26_HU__HU_Jasz Arokszalas_jolanka-12", "type": "MASC + Steganography", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_Jolanka_12_report.pdf", "number": 1794 }, { "submitted": "2026-11-03", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1313", "name": "cpc_1912-04-07_HU__HU_Jasz Arokszalas_jolanka-15", "type": "MASC + Steganography", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_Jolanka_15_report.pdf", "number": 1793 }, { "submitted": "2026-11-03", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1295", "name": "cpc_1912-06-06_HU__HU_Jasz Arokszalas_jolanka-24", "type": "MASC + Steganography", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_Jolanka_24_report.pdf", "number": 1792 }, { "submitted": "2026-11-03", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1296", "name": "cpc_1912-06-11_HU__HU_Jasz Arokszalas_jolanka-25", "type": "Steganography", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, steganographic recovery", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_Jolanka_25_report.pdf", "number": 1791 }, { "submitted": "2026-11-03", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1314", "name": "cpc_1913-03-20_HU__HU_Jasz Arokszalas_jolanka-35", "type": "MASC + Steganography", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_Jolanka_35_report.pdf", "number": 1790 }, { "submitted": "2026-11-03", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1275", "name": "cpc_1913-08-13_HU__HU_Jasz Arokszalas_jolanka-40", "type": "MASC + Steganography", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_Jolanka_40_report.pdf", "number": 1789 }, { "submitted": "2026-11-03", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1286", "name": "cpc_1914-01-10_HU__HU_Jasz Arokszalas_jolanka-47", "type": "MASC + Steganography", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_Jolanka_47_report.pdf", "number": 1788 }, { "submitted": "2026-11-03", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1306", "name": "cpc_1914-03-05_HU__HU_Jasz Arokszalas_jolanka-49", "type": "MASC + Steganography", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_Jolanka_49_report.pdf", "number": 1787 }, { "submitted": "2026-11-03", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1270", "name": "cpc_--_HU__HU_Jasz Arokszalas_jolanka-72", "type": "MASC + Steganography", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_Jolanka_72_report.pdf", "number": 1786 }, { "submitted": "2026-11-03", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1254", "name": "cpc_1912-03-27_HU__HU_Jasz Arokszalas_jolanka-13", "type": "MASC + Steganography", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_Jolanka_13_report.pdf", "number": 1785 }, { "submitted": "2026-11-03", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1272", "name": "cpc_1912-04-30_HU__HU_Jasz Arokszalas_jolanka-17", "type": "MASC + Steganography", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_Jolanka_17_report.pdf", "number": 1784 }, { "submitted": "2026-11-03", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1242", "name": "cpc_1912-05-05_HU__HU_Jasz Arokszalas_jolanka-19", "type": "MASC + Steganography", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_Jolanka_19_report.pdf", "number": 1783 }, { "submitted": "2026-11-03", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1240", "name": "cpc_1913-12-_HU__HU_Jasz Arokszalas_jolanka-117", "type": "MASC + Steganography", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_Jolanka_117_report.pdf", "number": 1782 }, { "submitted": "2026-11-03", "solver": "WAINUT", "source": "https://dbourdeau.github.io/cyphersolver/alfonso1576.html", "name": "Alfonso II d'Este to his agent (protonotary, ?Ariosti) at Venice, Ferrara, 14 Apr 1576 (Biblioteca Estense, Autografoteca Campori, Lettera E, cc. 76–77; catalogue 1566)", "type": "MASC", "model": "Not reported", "version": "Not reported", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/alfonso1576", "number": 1781 }, { "submitted": "2026-11-03", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/gonzaga1549.html", "name": "Charles V to Ferrante Gonzaga, Brussels, 14 November 1549 (Biblioteca Estense, Autografoteca Campori, Lettera K, Karl V, sfasc. 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IV cc. 64-65)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Sonnet 5.5; Claude Opus 5.5", "role": "key transfer: external key matched and applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/gonzaga1549", "number": 1779 }, { "submitted": "2026-11-03", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/gonzaga1549.html", "name": "Charles V to Ferrante Gonzaga, Brussels, 30 September 1549 (Biblioteca Estense, Autografoteca Campori, Lettera K, Karl V, sfasc. IV cc. 50-53)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Sonnet 5.5; Claude Opus 5.5", "role": "key transfer: external key matched and applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/gonzaga1549", "number": 1778 }, { "submitted": "2026-11-03", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/gonzaga1549.html", "name": "Charles V to Ferrante Gonzaga, Brussels, 13 May 1549 (Biblioteca Estense, Autografoteca Campori, Lettera K, Karl V, sfasc. III cc. 29-30)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Sonnet 5.5; Claude Opus 5.5", "role": "key transfer: external key matched and applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/gonzaga1549", "number": 1777 }, { "submitted": "2026-11-03", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/gonzaga1549.html", "name": "Charles V to Ferrante Gonzaga, Brussels, 23 December 1549 (Biblioteca Estense, Autografoteca Campori, Lettera K, Karl V, sfasc. IV cc. 76-78)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Sonnet 5.5; Claude Opus 5.5", "role": "key transfer: external key matched and applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/gonzaga1549", "number": 1776 }, { "submitted": "2026-11-03", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/martinique1778.html", "name": "Marquis de Bouillé to the Navy minister, Martinique, 24 May 1780 (ANOM COL C8 A 79 f. 70, no. 415)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Sonnet 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/martinique1778", "number": 1775 }, { "submitted": "2026-11-03", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/martinique1778.html", "name": "Marquis de Bouillé to the Navy minister, Martinique, 14 Nov 1780 (ANOM COL C8 A 79 f. 19, no. 23)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Sonnet 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/martinique1778", "number": 1774 }, { "submitted": "2026-11-03", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/martinique1778.html", "name": "Marquis de Bouillé to the Navy minister, Martinique, 24 Nov 1782 (ANOM COL C8 A 81 ff. 114-116, no. 12)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Sonnet 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/martinique1778", "number": 1773 }, { "submitted": "2026-11-02", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1447", "name": "pc_hcp_128", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, partial decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_128_report.pdf", "number": 1772 }, { "submitted": "2026-11-02", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1461", "name": "pc_hcp_142", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, partial decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_142_report.pdf", "number": 1771 }, { "submitted": "2026-11-02", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1465", "name": "pc_hcp_146", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, partial decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_146_report.pdf", "number": 1770 }, { "submitted": "2026-11-02", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1472", "name": "pc_hcp_153", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, partial decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_153_report.pdf", "number": 1769 }, { "submitted": "2026-11-02", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1479", "name": "pc_hcp_160", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, partial decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_160_report.pdf", "number": 1768 }, { "submitted": "2026-11-02", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1481", "name": "pc_hcp_162", "type": "Steganography/ gramogram", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, partial decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_162_report.pdf", "number": 1767 }, { "submitted": "2026-11-02", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1487", "name": "pc_hcp_168", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, partial decipherment", "agents": "NO", "extent": "Partial", "documentation": 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"https://crypto.hcportal.eu/dashboard/cryptograms/1147", "name": "cpc_1916-04-20_HU_Mezokovesd_HU_Szomolya_szomolya-29", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1147", "number": 1680 }, { "submitted": "2026-11-02", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1135", "name": "cpc_1916-04-22_HU_Mezokovesd_HU_Szomolya_szomolya-30", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1135", "number": 1679 }, { "submitted": "2026-11-02", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1149", "name": "cpc_1916-04-26_HU_Mezokovesd_HU_Szomolya_szomolya-32", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1149", "number": 1678 }, { "submitted": "2026-11-02", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1143", "name": "cpc_1916-05-04_HU_Mezokovesd_HU_Szomolya_szomolya-33", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1143", "number": 1677 }, { "submitted": "2026-11-02", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1148", "name": "cpc_1916-05-09_HU_Mezokovesd_HU_Szomolya_szomolya-34", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1148", "number": 1676 }, { "submitted": "2026-11-02", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1151", "name": "cpc_1916-05-13_HU_Mezokovesd_HU_Szomolya_szomolya-35", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1151", "number": 1675 }, { "submitted": "2026-11-02", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1144", "name": "cpc_1916-05-19_HU_Mezokovesd_HU_Szomolya_szomolya-36", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1144", "number": 1674 }, { "submitted": "2026-11-02", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1153", "name": "cpc_1916-06-09_HU_Mezokovesd_HU_Szomolya_szomolya-38", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1153", "number": 1673 }, { "submitted": "2026-11-02", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1137", "name": "cpc_1916-06-10_HU_Mezokovesd_HU_Szomolya_szomolya-39", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1137", "number": 1672 }, { "submitted": "2026-11-02", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1150", "name": "cpc_1916-06-12_HU_Mezokovesd_HU_Szomolya_szomolya-40", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1150", "number": 1671 }, { "submitted": "2026-11-02", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/adrian1520.html", "name": "Adrian of Utrecht, Cardinal of Tortosa, to Charles V, Valladolid, 9 Sep 1520 (AGS PTR,LEG,2,1,19, f. 1r)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from external plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/adrian1520", "number": 1670 }, { "submitted": "2026-11-02", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/lejava1921.html", "name": "Lejava to Stomoniakov via Kopp, Nr 1196, Moscow to Berlin, 5 Apr 1921 (NARA RG 59 861.00, M316 roll 41 frame 0787)", "type": "Transposition", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/lejava1921", "number": 1669 }, { "submitted": "2026-11-02", "solver": "Michael Brackx", "source": "https://dbourdeau.github.io/cyphersolver/siguenza1554.html", "name": "Pedro Pacheco, cardinal of Sigüenza, to Antoine Perrenot de Granvelle, Naples, 4 Apr 1554 (BNE MSS/20214/61/1)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/siguenza1554", "number": 1668 }, { "submitted": "2026-11-02", "solver": "Michael Brackx", "source": "https://dbourdeau.github.io/cyphersolver/siguenza1554.html", "name": "Pedro Pacheco, cardinal of Sigüenza, to Antoine Perrenot de Granvelle, Naples, 9 May 1554 (BNE MSS/20214/61/2)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/siguenza1554", "number": 1667 }, { "submitted": "2026-11-02", "solver": "Michael Brackx", "source": "https://dbourdeau.github.io/cyphersolver/siguenza1554.html", "name": "Pedro Pacheco, cardinal of Sigüenza, to Antoine Perrenot de Granvelle, Naples, 15 May 1554 (BNE MSS/20214/61/3)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/siguenza1554", "number": 1666 }, { "submitted": "2026-11-02", "solver": "Michael Brackx", "source": "https://dbourdeau.github.io/cyphersolver/siguenza1554.html", "name": "Pedro Pacheco, cardinal of Sigüenza, to Antoine Perrenot de Granvelle, Naples, 24 May 1554 (BNE MSS/20214/61/4)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/siguenza1554", "number": 1665 }, { "submitted": "2026-11-02", "solver": "Michael Brackx", "source": "https://dbourdeau.github.io/cyphersolver/siguenza1554.html", "name": "Pedro Pacheco, cardinal of Sigüenza, to Antoine Perrenot de Granvelle, Naples, 11 Jun 1554 (BNE MSS/20214/61/6)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/siguenza1554", "number": 1664 }, { "submitted": "2026-11-02", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/voikov1921.html", "name": "Voikov to Stomoniakov, Moscow to Berlin, Nr 1883/1188/S, 1 Jun 1921 (NARA RG 59 861.00, M316 roll 42 frame 1273)", "type": "Transposition", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/voikov1921", "number": 1663 }, { "submitted": "2026-11-01", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1266", "name": "cpc_--09_HU__HU_Jasz Arokszalas_jolanka-83", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1266", "number": 1662 }, { "submitted": "2026-11-01", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1265", "name": "cpc_--17_HU__HU_Jasz Arokszalas_jolanka-86", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1265", "number": 1661 }, { "submitted": "2026-11-01", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1260", "name": "cpc_--25_HU__HU_Jasz Arokszalas_jolanka-90", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1260", "number": 1660 }, { "submitted": "2026-11-01", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1256", "name": "cpc_--_HU__HU_Jasz Arokszalas_jolanka-68", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1256", "number": 1659 }, { "submitted": "2026-11-01", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1257", "name": "cpc_--_HU__HU_Jasz Arokszalas_jolanka-69", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1257", "number": 1658 }, { "submitted": "2026-11-01", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1258", "name": "cpc_--_HU__HU_Jasz Arokszalas_jolanka-70", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1258", "number": 1657 }, { "submitted": "2026-11-01", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1269", "name": "cpc_--_HU__HU_Jasz Arokszalas_jolanka-71", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1269", "number": 1656 }, { "submitted": "2026-11-01", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1274", "name": "cpc_--_HU__HU_Jasz Arokszalas_jolanka-73", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1274", "number": 1655 }, { "submitted": "2026-11-01", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1284", "name": "cpc_--_HU__HU_Jasz Arokszalas_jolanka-74", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1284", "number": 1654 }, { "submitted": "2026-11-01", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1264", "name": "cpc_-02-04_HU__HU_Jasz Arokszalas_jolanka-93", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1264", "number": 1653 }, { "submitted": "2026-11-01", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1282", "name": "cpc_-04-11_HU__HU_Jasz Arokszalas_jolanka-94", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1282", "number": 1652 }, { "submitted": "2026-11-01", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1262", "name": "cpc_1912--15_HU__HU_Jasz Arokszalas_jolanka-100", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1262", "number": 1651 }, { "submitted": "2026-11-01", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1278", "name": "cpc_1912--27_HU__HU_Jasz Arokszalas_jolanka-103", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1278", "number": 1650 }, { "submitted": "2026-11-01", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1268", "name": "cpc_1912-01-17_HU__HU_Jasz Arokszalas_jolanka-03", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1268", "number": 1649 }, { "submitted": "2026-11-01", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1261", "name": "cpc_1912-03-07_HU__HU_Jasz Arokszalas_jolanka-07", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1261", "number": 1648 }, { "submitted": "2026-11-01", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1255", "name": "cpc_1912-03-11_HU__HU_Jasz Arokszalas_jolanka-08", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1255", "number": 1647 }, { "submitted": "2026-11-01", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1271", "name": "cpc_1912-03-16_HU__HU_Jasz Arokszalas_jolanka-10", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1271", "number": 1646 }, { "submitted": "2026-11-01", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1245", "name": "cpc_1912-03-20_HU__HU_Jasz Arokszalas_jolanka-11", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1245", "number": 1645 }, { "submitted": "2026-11-01", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1259", "name": "cpc_1912-04-04_HU__HU_Jasz Arokszalas_jolanka-14", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1259", "number": 1644 }, { "submitted": "2026-11-01", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1244", "name": "cpc_1912-04-10_HU__HU_Jasz Arokszalas_jolanka-16", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1244", "number": 1643 }, { "submitted": "2026-11-01", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1273", "name": "cpc_1912-05-04_HU__HU_Jasz Arokszalas_jolanka-18", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1273", "number": 1642 }, { "submitted": "2026-11-01", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1276", "name": "cpc_1912-08-11_HU__HU_Jasz Arokszalas_jolanka-30", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1276", "number": 1641 }, { "submitted": "2026-11-01", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1263", "name": "cpc_1913--_HU__HU_Jasz Arokszalas_jolanka-109", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1263", "number": 1640 }, { "submitted": "2026-11-01", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1253", "name": "cpc_1913-02-22_HU__HU_Jasz Arokszalas_jolanka-33", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1253", "number": 1639 }, { "submitted": "2026-11-01", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1283", "name": "cpc_1913-03-20_HU__HU_Jasz Arokszalas_jolanka-34", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment 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"version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1303", "number": 1622 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1289", "name": "cpc_--22_HU__HU_Jasz Arokszalas_jolanka-87", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1289", "number": 1621 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1300", "name": "cpc_--26_HU__HU_Jasz Arokszalas_jolanka-91", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1300", "number": 1620 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1293", "name": "cpc_--_HU__HU_Jasz Arokszalas_jolanka-76", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1293", "number": 1619 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1298", "name": "cpc_--_HU__HU_Jasz Arokszalas_jolanka-77", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1298", "number": 1618 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1307", "name": "cpc_--_HU__HU_Jasz Arokszalas_jolanka-79", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1307", "number": 1617 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1308", "name": "cpc_--_HU__HU_Jasz Arokszalas_jolanka-80", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1308", "number": 1616 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1311", "name": "cpc_--_HU__HU_Jasz Arokszalas_jolanka-81", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment, closing partly read by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1311", "number": 1615 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1290", "name": "cpc_-02-_HU__HU_Jasz Arokszalas_jolanka-92", "type": "MASC + Steganography", "model": 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"model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1305", "number": 1612 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1309", "name": "cpc_1912--_HU__HU_Jasz Arokszalas_jolanka-99", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1309", "number": 1611 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1285", "name": "cpc_1912-01-14_HU__HU_Jasz Arokszalas_jolanka-02", "type": "MASC + 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"type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1316", "number": 1608 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1310", "name": "cpc_1912-07-03_HU__HU_Jasz Arokszalas_jolanka-28", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1310", "number": 1607 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1297", "name": "cpc_1912-07-07_HU__HU_Jasz Arokszalas_jolanka-29", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1297", "number": 1606 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1319", "name": "cpc_1912-09-_HU__HU_Jasz Arokszalas_jolanka-107", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1319", "number": 1605 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1288", "name": "cpc_1913--13_HU__HU_Jasz Arokszalas_jolanka-112", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1288", "number": 1604 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1317", "name": "cpc_1913--_HU__HU_Jasz Arokszalas_jolanka-110", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment, one word unresolved by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1317", "number": 1603 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1318", "name": "cpc_1913--_HU__HU_Jasz Arokszalas_jolanka-111", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1318", "number": 1602 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1291", "name": "cpc_1913-08-31_HU__HU_Jasz Arokszalas_jolanka-41", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1291", "number": 1601 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1315", "name": "cpc_1914--_HU__HU_Jasz Arokszalas_jolanka-119", "type": "MASC + Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1315", "number": 1600 }, { "submitted": "2026-10-30", "solver": "Michael Brackx", "source": "https://dbourdeau.github.io/cyphersolver/ferdinand1473.html", "name": "Ferdinand of Aragon to John II, Hostalric, 5 June 1473 (BNE MSS/20211/64)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude (version not reported)", "role": "transcription, key reconstruction from interlinear notes and adjacent plaintext, partial decipherment", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/ferdinand1473", "number": 1599 }, { "submitted": "2026-10-30", "solver": "Michael Brackx", "source": "https://dbourdeau.github.io/cyphersolver/ferdinand1473.html", "name": "Ferdinand of Aragon to John II, Zaragoza, 3 November 1474 (BNE MSS/20211/73)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude (version not reported)", "role": "transcription, key reconstruction from interlinear notes and adjacent plaintext, partial decipherment", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/ferdinand1473", "number": 1598 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1331", "name": "pc_hcp_12", "type": "Steganography", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, analysis, restoration of dotted letters by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1331", "number": 1597 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1332", "name": "pc_hcp_13", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key reconstruction, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1332", "number": 1596 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1333", "name": "pc_hcp_14", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key reconstruction, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1333", "number": 1595 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1321", "name": "pc_hcp_2", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key reconstruction, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1321", "number": 1594 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1340", "name": "pc_hcp_21", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key reconstruction, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1340", "number": 1593 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1343", "name": "pc_hcp_24", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1343", "number": 1592 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1346", "name": "pc_hcp_27", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key reconstruction, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1346", "number": 1591 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1347", "name": "pc_hcp_28", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1347", "number": 1590 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1348", "name": "pc_hcp_29", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1348", "number": 1589 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1349", "name": "pc_hcp_30", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1349", "number": 1588 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1350", "name": "pc_hcp_31", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1350", "number": 1587 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1351", "name": "pc_hcp_32", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, 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"documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1353", "number": 1584 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1354", "name": "pc_hcp_35", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1354", "number": 1583 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1355", "name": "pc_hcp_36", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1355", "number": 1582 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1356", "name": "pc_hcp_37", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1356", "number": 1581 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1357", "name": "pc_hcp_38", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1357", "number": 1580 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": 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}, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1787", "name": "pc_hcp_468", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key reconstruction, decipherment, three words unread by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1787", "number": 1570 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1366", "name": "pc_hcp_47", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1366", "number": 1569 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": 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"number": 1560 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1375", "name": "pc_hcp_56", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1375", "number": 1559 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1376", "name": "pc_hcp_57", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, key transfer, decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1376", "number": 1558 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": 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"initial transcription by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1489", "number": 1516 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1490", "name": "pc_hcp_171", "type": "MASC/Pigpen", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "source capture by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1490", "number": 1515 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1494", "name": "pc_hcp_175", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial transcription, key/cipher analysis by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1494", "number": 1514 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1495", "name": "pc_hcp_176", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial transcription, key/cipher analysis by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1495", "number": 1513 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1501", "name": "pc_hcp_182", "type": "MASC/Morse", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "source capture, key/cipher analysis by OpenAI GPT; transcription, decipherment, translation by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1501", "number": 1512 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1502", "name": "pc_hcp_183", "type": "MASC/Morse", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "source capture, key/cipher analysis by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1502", "number": 1511 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1503", "name": "pc_hcp_184", "type": "MASC/Morse", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "source capture by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1503", "number": 1510 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1505", "name": "pc_hcp_186", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial transcription, key/cipher analysis by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1505", "number": 1509 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1508", "name": "pc_hcp_189", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial transcription, key/cipher analysis by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1508", "number": 1508 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1509", "name": "pc_hcp_190", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "source capture by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1509", "number": 1507 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1513", "name": "pc_hcp_194", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "source capture, key/cipher analysis, partial reading by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1513", "number": 1506 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1528", "name": "pc_hcp_209", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial transcription by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1528", "number": 1505 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1534", "name": "pc_hcp_215", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial transcription, key/cipher analysis, partial decipherment by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1534", "number": 1504 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1538", "name": "pc_hcp_219", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial transcription, key/cipher analysis, partial decipherment by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1538", "number": 1503 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1540", "name": "pc_hcp_221", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial transcription, key/cipher analysis, partial decipherment by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1540", "number": 1502 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1549", "name": "pc_hcp_230", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial transcription, key/cipher analysis, partial decipherment by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1549", "number": 1501 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1565", "name": "pc_hcp_246", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial transcription, key/cipher analysis by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1565", "number": 1500 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1571", "name": "pc_hcp_252", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial transcription, key/cipher analysis, partial decipherment by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1571", "number": 1499 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1800", "name": "pc_hcp_481", "type": "MASC/Pigpen", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "source capture by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1800", "number": 1498 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1386", "name": "pc_hcp_67", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial transcription, key/cipher analysis by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1386", "number": 1497 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1387", "name": "pc_hcp_68", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial transcription, key/cipher analysis by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1387", "number": 1496 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1388", "name": "pc_hcp_69", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial transcription, key/cipher analysis by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1388", "number": 1495 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1392", "name": "pc_hcp_73", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial transcription, key/cipher analysis, partial decipherment by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1392", "number": 1494 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1393", "name": "pc_hcp_74", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial transcription, key/cipher analysis by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1393", "number": 1493 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1395", "name": "pc_hcp_76", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial transcription, key/cipher analysis by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1395", "number": 1492 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1399", "name": "pc_hcp_80", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial transcription, key/cipher analysis by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1399", "number": 1491 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1401", "name": "pc_hcp_82", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial transcription, key/cipher analysis by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1401", "number": 1490 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1402", "name": "pc_hcp_83", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial transcription, key/cipher analysis by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1402", "number": 1489 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1403", "name": "pc_hcp_84", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial transcription, key/cipher analysis by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1403", "number": 1488 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1404", "name": "pc_hcp_85", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial transcription, key/cipher analysis by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1404", "number": 1487 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1405", "name": "pc_hcp_86", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial transcription by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1405", "number": 1486 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1406", "name": "pc_hcp_87", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial transcription, key/cipher analysis by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1406", "number": 1485 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1407", "name": "pc_hcp_88", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial transcription, key/cipher analysis by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1407", "number": 1484 }, { "submitted": "2026-10-30", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1408", "name": "pc_hcp_89", "type": "Steganography/ gramogram", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial transcription by OpenAI GPT; rebus analysis and decipherment by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1408", "number": 1483 }, { "submitted": "2026-10-30", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/biglia1565.html", "name": "Melchiorre Biglia, nuncio to Maximilian II, to V.S. in Rome, Vienna, [5] December 1565, second cipher letter (Ambrosiana, Trotti 22, fol. 7r l. 33 - 7v l. 23)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/biglia1565", "number": 1482 }, { "submitted": "2026-10-30", "solver": "Harrison Bornstein", "source": "https://dbourdeau.github.io/cyphersolver/buda1490.html", "name": "Maffeo da Treviglio to Tamás Bakócz, Milan → Buda, 30 November 1490 (MNL OL DL 46150)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from external plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/buda1490", "number": 1481 }, { "submitted": "2026-10-30", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/champigny1744.html", "name": "Governor Champigny to Maurepas, cipher copy of Commodore Knowles's notice to the inhabitants of Dominica, enclosed with letter of 17 August 1744, Fort-Royal, Martinique (ANOM COL C8 A 56 fols. 57-57v)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/champigny1744", "number": 1480 }, { "submitted": "2026-10-30", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/genes1643.html", "name": "Juan de Eraso to Philip IV, Genoa, 18 January 1643 (AGS Estado leg. 3598 no. 44, PARES 3555178)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from external plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/genes1643", "number": 1479 }, { "submitted": "2026-10-30", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/napoleon.html", "name": "King Joseph to Napoleon, Spain, December 1812 (printed by Vilcoq 1969 as Berthier's dispatch of 22 Dec 1812; AN AF/IV/1643, page 3)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/napoleon", "number": 1478 }, { "submitted": "2026-10-30", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/rubio1913.html", "name": "Gen. Guillermo Rubio Navarrete, Lampazos, to the Minister of War and Navy, Mexico City, 18 Jul 1913, draft telegram, incomplete (CEHM-Carso DLXXIII.1.30.16-49)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/rubio1913", "number": 1477 }, { "submitted": "2026-10-30", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/rubio1913.html", "name": "Gen. Guillermo Rubio Navarrete, Zacatecas, to the Minister of War and Navy, Mexico City, 13 Mar 1914, draft telegram (CEHM-Carso DLXXIII.2.41.9-41)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/rubio1913", "number": 1476 }, { "submitted": "2026-10-30", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/rubio1913.html", "name": "Gen. Guillermo Rubio Navarrete, Zacatecas, to the Minister of War and Navy, Mexico City, 18 Mar 1914, draft telegram (CEHM-Carso DLXXIII.2.41.13-41)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/rubio1913", "number": 1475 }, { "submitted": "2026-10-30", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/santacruz1630.html", "name": "Philip IV to the Marquis of Santa Cruz, governor of Milan, Madrid, 6 December 1630 (AHNOB SANTA CRUZ,C.50,D.213)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from external plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/santacruz1630", "number": 1474 }, { "submitted": "2026-10-29", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/augur1874.html", "name": "C. C. Augur to Lt. Gen. Sheridan, San Antonio to Chicago, telegram 22, 9 Jan 1874 (Newberry, Ayer MS 3008, box 02, letter-book p. 84)", "type": "Transposition", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial analysis by OpenAI GPT; analysis and verification by Claude Opus 5.5; independent AI review", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/augur1874", "number": 1473 }, { "submitted": "2026-10-29", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/augur1874.html", "name": "C. C. Augur to Lt. Gen. Sheridan, San Antonio to Chicago, telegram 29, 12 Jan 1874 (Newberry, Ayer MS 3008, box 02, letter-book p. 85)", "type": "Transposition", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial analysis by OpenAI GPT; analysis and verification by Claude Opus 5.5; independent AI review", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/augur1874", "number": 1472 }, { "submitted": "2026-10-29", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/augur1874.html", "name": "C. C. Augur to Maj. G. B. Russell, San Antonio to Austin, telegram 30, 12 Jan 1874 (Newberry, Ayer MS 3008, box 02, letter-book p. 85)", "type": "Transposition", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial analysis by OpenAI GPT; analysis and verification by Claude Opus 5.5; independent AI review", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/augur1874", "number": 1471 }, { "submitted": "2026-10-29", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/augur1874.html", "name": "C. C. Augur to Maj. G. B. 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"https://github.com/dbourdeau/cyphersolver/tree/main/targets/visconti1446", "number": 1469 }, { "submitted": "2026-10-29", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/visconti1446.html", "name": "Filippo Maria Visconti to Francesco Sforza, Milan, 25 Nov 1446 (BnF italien 1583 f. 130; DECODE R7904)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key/cipher analysis by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/visconti1446", "number": 1468 }, { "submitted": "2026-10-29", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/visconti1446.html", "name": "Filippo Maria Visconti to Francesco Sforza, Milan, 29 Nov 1446 (BnF italien 1583 f. 136; DECODE R7907)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key/cipher analysis by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/visconti1446", "number": 1467 }, { "submitted": "2026-10-29", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/visconti1446.html", "name": "Filippo Maria Visconti to Francesco Sforza, Milan, 12 Dec 1446 (BnF italien 1583 f. 154; DECODE R7914)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key/cipher analysis by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/visconti1446", "number": 1466 }, { "submitted": "2026-10-29", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/visconti1446.html", "name": "Filippo Maria Visconti to Francesco Sforza, Cusago, 31 Dec 1446 (BnF italien 1583 f. 158; DECODE R7915)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key/cipher analysis by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/visconti1446", "number": 1465 }, { "submitted": "2026-10-29", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/visconti1446.html", "name": "Filippo Maria Visconti to Francesco Sforza, Abbiategrasso, 10 Jan 1447 (BnF italien 1584 f. 5)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key/cipher analysis by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/visconti1446", "number": 1464 }, { "submitted": "2026-10-29", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/visconti1446.html", "name": "Filippo Maria Visconti to Francesco Sforza, Abbiategrasso, 11 Jan 1447 (BnF italien 1584 f. 8)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key/cipher analysis by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/visconti1446", "number": 1463 }, { "submitted": "2026-10-29", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/visconti1446.html", "name": "Filippo Maria Visconti to Francesco Sforza, Milan, 5 Feb 1447 (BnF italien 1584 f. 24)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key/cipher analysis by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/visconti1446", "number": 1462 }, { "submitted": "2026-10-29", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/visconti1446.html", "name": "Filippo Maria Visconti to Francesco Sforza, Milan, 5 Feb 1447, duplicate re-enciphered and re-sent 24 Feb 1447 (BnF italien 1584 f. 23)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key/cipher analysis by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/visconti1446", "number": 1461 }, { "submitted": "2026-10-29", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/visconti1446.html", "name": "Filippo Maria Visconti to Francesco Sforza, Milan, 9 Feb 1447 (BnF italien 1584 f. 30)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key/cipher analysis by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/visconti1446", "number": 1460 }, { "submitted": "2026-10-29", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/visconti1446.html", "name": "Filippo Maria Visconti to Francesco Sforza, Milan, 9 Feb 1447, duplicate re-enciphered and re-sent 24 Feb 1447 (BnF italien 1584 f. 31)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key/cipher analysis by OpenAI GPT; transcription, decipherment, 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"https://crypto.hcportal.eu/dashboard/cryptograms/1553", "name": "pc_hcp_234", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial transcription, key/cipher analysis, partial decipherment by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1553", "number": 1439 }, { "submitted": "2026-10-29", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1554", "name": "pc_hcp_235", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial transcription, key/cipher analysis, partial decipherment by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1554", "number": 1438 }, { "submitted": "2026-10-29", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1557", "name": "pc_hcp_238", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial transcription, key/cipher analysis, partial decipherment by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1557", "number": 1437 }, { "submitted": "2026-10-29", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1559", "name": "pc_hcp_240", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial transcription, key/cipher analysis, partial decipherment by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1559", "number": 1436 }, { "submitted": "2026-10-29", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1560", "name": "pc_hcp_241", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial transcription, key/cipher analysis by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1560", "number": 1435 }, { "submitted": "2026-10-29", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1570", "name": "pc_hcp_251", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial transcription, partial decipherment by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1570", "number": 1434 }, { "submitted": "2026-10-29", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1390", "name": "pc_hcp_71", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial transcription, partial decipherment by OpenAI GPT; transcription, decipherment, verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1390", "number": 1433 }, { "submitted": "2026-10-29", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1398", "name": "pc_hcp_79", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "initial transcription, partial decipherment by OpenAI GPT; analysis and verification by Claude Opus 5.5; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1398", "number": 1432 }, { "submitted": "2026-10-29", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1719", "name": "pc_hcp_400", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_400_report.pdf", "number": 1431 }, { "submitted": "2026-10-29", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1720", "name": "pc_hcp_401", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_401_report.pdf", "number": 1430 }, { "submitted": "2026-10-29", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1721", "name": "pc_hcp_402", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_402_report.pdf", "number": 1429 }, { "submitted": "2026-10-29", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1722", "name": "pc_hcp_403", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_403_report.pdf", "number": 1428 }, { "submitted": "2026-10-29", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1723", "name": "pc_hcp_404", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_404_report.pdf", "number": 1427 }, { "submitted": "2026-10-29", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1724", "name": "pc_hcp_405", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_405_report.pdf", "number": 1426 }, { "submitted": "2026-10-29", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1725", "name": "pc_hcp_406", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_406_report.pdf", "number": 1425 }, { "submitted": "2026-10-29", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1726", "name": "pc_hcp_407", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_407_report.pdf", "number": 1424 }, { "submitted": "2026-10-29", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1727", "name": "pc_hcp_408", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_408_report.pdf", "number": 1423 }, { "submitted": "2026-10-29", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1728", "name": "pc_hcp_409", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_409_report.pdf", "number": 1422 }, { "submitted": "2026-10-29", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1729", "name": "pc_hcp_410", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_410_report.pdf", "number": 1421 }, { "submitted": "2026-10-29", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1730", "name": "pc_hcp_411", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_411_report.pdf", "number": 1420 }, { "submitted": "2026-10-29", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1731", "name": "pc_hcp_412", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_412_report.pdf", "number": 1419 }, { "submitted": "2026-10-29", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1732", "name": "pc_hcp_413", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_413_report.pdf", "number": 1418 }, { "submitted": "2026-10-29", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1733", "name": "pc_hcp_414", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_414_report.pdf", "number": 1417 }, { "submitted": "2026-10-29", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1734", "name": "pc_hcp_415", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_415_report.pdf", "number": 1416 }, { "submitted": "2026-10-29", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1735", "name": "pc_hcp_416", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_416_report.pdf", "number": 1415 }, { "submitted": "2026-10-29", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1736", "name": "pc_hcp_417", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_417_report.pdf", "number": 1414 }, { "submitted": "2026-10-29", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1737", "name": "pc_hcp_418", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_418_report.pdf", "number": 1413 }, { "submitted": "2026-10-29", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1738", "name": "pc_hcp_419", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_419_report.pdf", "number": 1412 }, { "submitted": "2026-10-29", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/asang1662.html", "name": "Anonymous letter to an unnamed lord, place not stated, 31 July 1662 (Kraków, Archiwum Narodowe, Archiwum Sanguszków, teka 134/8; DECODE R7513)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/asang1662", "number": 1411 }, { "submitted": "2026-10-29", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/bell1900.html", "name": "Alexander Graham Bell to Mabel Hubbard Bell, 'Unicode' code telegram copied into a letter from the SS Ulunda, London → Paris, 27 August 1900 (LoC Bell Family Papers magbell.04100117)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Sonnet 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/bell1900", "number": 1410 }, { "submitted": "2026-10-29", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/perez1578.html", "name": "Antonio Pérez to Don John of Austria, Madrid, 19 Aug 1578 (RAH 2/Ms Caja 8 no. 4)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/perez1578", "number": 1409 }, { "submitted": "2026-10-29", "solver": "Brice Dudout", "source": "https://de-crypt.org/decrypt-web/RecordsView/5612", "name": "Filippo Sega to a cardinal (Rome), Paris, 26 Nov 1590 (AAV Segr. Stato, Francia 32 f. 17r-v; DECODE R5612)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sega1590", "number": 1408 }, { "submitted": "2026-10-29", "solver": "Brice Dudout", "source": "https://de-crypt.org/decrypt-web/RecordsView/5616", "name": "Filippo Sega to Cardinal Enrico Caetani, Paris, 16 Jan 1591 (AAV Segr. Stato, Francia 32 f. 71r-v; DECODE R5616)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sega1590", "number": 1407 }, { "submitted": "2026-10-29", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/visconti1447.html", "name": "Filippo Maria Visconti, Duke of Milan to Francesco Sforza, Cusago, 23 Jan 1447, second key (BnF italien 1584 f. 15; key DECODE R5324)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: external key matched and applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/visconti1447", "number": 1406 }, { "submitted": "2026-10-28", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/995", "name": "cpc_1900-02-10_DE_Bonn_DE_Berlin_mariechen-01", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-995", "number": 1405 }, { "submitted": "2026-10-28", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/962", "name": "cpc_1903-06-06_DE_Bonn_DE_Aachen_", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment; independent AI review", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-962", "number": 1404 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1439", "name": "pc_hcp_120", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_120_report.pdf", "number": 1403 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1441", "name": "pc_hcp_122", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_122_report.pdf", "number": 1402 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1443", "name": "pc_hcp_124", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_124_report.pdf", "number": 1401 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1444", "name": "pc_hcp_125", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_125_report.pdf", "number": 1400 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1445", "name": "pc_hcp_126", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_126_report.pdf", "number": 1399 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1739", "name": "pc_hcp_420", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_420_report.pdf", "number": 1398 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1740", "name": "pc_hcp_421", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_421_report.pdf", "number": 1397 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1741", "name": "pc_hcp_422", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_422_report.pdf", "number": 1396 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1742", "name": "pc_hcp_423", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_423_report.pdf", "number": 1395 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1743", "name": "pc_hcp_424", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_424_report.pdf", "number": 1394 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1744", "name": "pc_hcp_425", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_425_report.pdf", "number": 1393 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1745", "name": "pc_hcp_426", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_426_report.pdf", "number": 1392 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1746", "name": "pc_hcp_427", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_427_report.pdf", "number": 1391 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1747", "name": "pc_hcp_428", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_428_report.pdf", "number": 1390 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1748", "name": "pc_hcp_429", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_429_report.pdf", "number": 1389 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1749", "name": "pc_hcp_430", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_430_report.pdf", "number": 1388 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1750", "name": "pc_hcp_431", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_431_report.pdf", "number": 1387 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1751", "name": "pc_hcp_432", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_432_report.pdf", "number": 1386 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1752", "name": "pc_hcp_433", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_433_report.pdf", "number": 1385 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1753", "name": "pc_hcp_434", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_434_report.pdf", "number": 1384 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1754", "name": "pc_hcp_435", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_435_report.pdf", "number": 1383 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1755", "name": "pc_hcp_436", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_436_report.pdf", "number": 1382 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1756", "name": "pc_hcp_437", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_437_report.pdf", "number": 1381 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1757", "name": "pc_hcp_438", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_438_report.pdf", "number": 1380 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1758", "name": "pc_hcp_439", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_439_report.pdf", "number": 1379 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1761", "name": "pc_hcp_442", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_442_report.pdf", "number": 1378 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1762", "name": "pc_hcp_443", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_443_report.pdf", "number": 1377 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1763", "name": "pc_hcp_444", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_444_report.pdf", "number": 1376 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1764", "name": "pc_hcp_445", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_445_report.pdf", "number": 1375 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1765", "name": "pc_hcp_446", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_446_report.pdf", "number": 1374 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1767", "name": "pc_hcp_448", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_448_report.pdf", "number": 1373 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1768", "name": "pc_hcp_449", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_449_report.pdf", "number": 1372 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1769", "name": "pc_hcp_450", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_450_report.pdf", "number": 1371 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1770", "name": "pc_hcp_451", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_451_report.pdf", "number": 1370 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1771", "name": "pc_hcp_452", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_452_report.pdf", "number": 1369 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1773", "name": "pc_hcp_454", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_454_report.pdf", "number": 1368 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1774", "name": "pc_hcp_455", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_455_report.pdf", "number": 1367 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1775", "name": "pc_hcp_456", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_456_report.pdf", "number": 1366 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1776", "name": "pc_hcp_457", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_457_report.pdf", "number": 1365 }, { "submitted": "2026-10-28", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1778", "name": "pc_hcp_459", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key transfer, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_459_report.pdf", "number": 1364 }, { "submitted": "2026-10-28", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/auckland1918.html", "name": "US Consul-General A. A. Winslow, Auckland, to Naval Commander, San Francisco, cable, 18 Feb 1918 (NARA RG 59, 763.72/9377, M367 roll 83, image 0113)", "type": "Polyalphabetic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/auckland1918", "number": 1363 }, { "submitted": "2026-10-28", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/auckland1918.html", "name": "Washington (probably Navy Department) to US Consul-General, Auckland, cable, 28 Feb 1918, received 1 Mar 1918 (NARA RG 59, 763.72/9377, M367 roll 83, image 0114)", "type": "Polyalphabetic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/auckland1918", "number": 1362 }, { "submitted": "2026-10-28", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/bouille1778.html", "name": "Marquis de Bouillé to Sartine, Fort-Royal, Martinique, 17 Sep 1778, no. 238 (ANOM COL C8 A 77 fol. 88)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/bouille1778", "number": 1361 }, { "submitted": "2026-10-28", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/bouille1778.html", "name": "Marquis de Bouillé to Sartine, Fort-Royal, Martinique, 5 Dec 1778, no. 259 (ANOM COL C8 A 77 fol. 101, image 0162)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/bouille1778", "number": 1360 }, { "submitted": "2026-10-28", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/bouille1778.html", "name": "Bouillé, ciphered return of the Dominica garrison as of 1 Dec 1778, sent 9 Dec 1778 with no. 259 (ANOM COL C8 A 77 fol. 101, image 0163)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/bouille1778", "number": 1359 }, { "submitted": "2026-10-28", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/bouille1778.html", "name": "Bouillé, ciphered return of the troops in Martinique as of 1 Dec 1778, sent with no. 259 (ANOM COL C8 A 77 fol. 101, image 0164)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/bouille1778", "number": 1358 }, { "submitted": "2026-10-28", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/damas1787.html", "name": "Comte de Damas to the Secretary of State for the Navy, Martinique, 2 Nov 1787 (ANOM COL C8 B 16 no. 61, no. 501)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/damas1787", "number": 1357 }, { "submitted": "2026-10-28", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/deboli1788.html", "name": "Antoni Augustyn Deboli to King Stanisław August, St Petersburg, 13 May 1788, despatch no. 038 (AGAD Zbiór Popielów 428, k. 74–75v)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/deboli1788", "number": 1356 }, { "submitted": "2026-10-28", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/genes1638.html", "name": "Count of Siruela to Philip IV, Genoa, 19 May 1638 (AGS Estado leg. 3594 no. 156; PARES 3586918)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from external plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/genes1638", "number": 1355 }, { "submitted": "2026-10-28", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/partyet1721.html", "name": "Partyet, French consul at Cadiz, to the Conseil de Marine, Cadiz, 7 Apr 1721 (Archives nationales AE/B/I/226, fols. 92v-93)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/partyet1721", "number": 1354 }, { "submitted": "2026-10-28", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/portstemarie1729.html", "name": "British agent at Port Sainte-Marie to the Duke of Newcastle, c. July 1729, enclosed 8 Aug 1729 (Huntington Library, mssBLA 191 p. 5)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/portstemarie1729", "number": 1353 }, { "submitted": "2026-10-27", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1397", "name": "pc_hcp_78", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "manual transcription, analysis, decipherment; independent review by Claude Opus 5.5; report and closing prepared by Claude Opus 5.5 on the solver's behalf", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1397", "number": 1352 }, { "submitted": "2026-10-27", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/albornoz1648.html", "name": "Philip IV to Cardinal Gil de Albornoz, Madrid → Rome, 24 July 1648 (AHNOB OSUNA,CT.2,D.32, copies A and B)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from external plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/albornoz1648", "number": 1351 }, { "submitted": "2026-10-27", "solver": "WAINUT", "source": "https://dbourdeau.github.io/cyphersolver/bernstorff1917.html", "name": "Bernstorff to Auswärtiges Amt (Zimmermann), Washington, telegram No. 205, 10 Jan 1917 (NARA RG 59 763.72111/4443, M367 roll 166 frame 0785, groups 0-146)", "type": "Code", "model": "Not reported", "version": "Not reported", "role": "key recovered from external plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/bernstorff1917", "number": 1350 }, { "submitted": "2026-10-27", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/deboli1789.html", "name": "Antoni Augustyn Deboli to King Stanisław August, St Petersburg, 25 Mar 1789, postscript to the duplicate (AGAD Zbiór Popielów 17, no. 024, k. 77)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/deboli1789", "number": 1349 }, { "submitted": "2026-10-27", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/deboli1789.html", "name": "Antoni Augustyn Deboli to King Stanisław August, St Petersburg, 10 May 1789 (AGAD Zbiór Popielów 17, no. 042, k. 138-142v)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/deboli1789", "number": 1348 }, { "submitted": "2026-10-27", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/deboli1789.html", "name": "Antoni Augustyn Deboli to King Stanisław August, St Petersburg, 14 Dec 1789 (AGAD Zbiór Popielów 17, no. 104, k. 296-298v)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/deboli1789", "number": 1347 }, { "submitted": "2026-10-27", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/erbach1653.html", "name": "Georg Ernst zu Erbach to Landgrave Ludwig VI of Hesse-Darmstadt, Fürstenau → Stockholm, No. 1, 22 Mar 1666 (HStAD D 4 Nr. 248/3, image 003)", "type": "Other", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/erbach1653", "number": 1346 }, { "submitted": "2026-10-27", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/erbach1653.html", "name": "Georg Ernst zu Erbach to Landgrave Ludwig VI of Hesse-Darmstadt, Fürstenau → Stockholm, No. 2, 27 Apr 1666 (HStAD D 4 Nr. 248/3, image 006)", "type": "Other", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/erbach1653", "number": 1345 }, { "submitted": "2026-10-27", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/erbach1653.html", "name": "Georg Ernst zu Erbach to Landgrave Ludwig VI of Hesse-Darmstadt, Fürstenau → Stockholm, undated [before 27 Apr 1666], eight reasons (HStAD D 4 Nr. 248/3, image 004)", "type": "Other", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/erbach1653", "number": 1344 }, { "submitted": "2026-10-27", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/ferducci1532.html", "name": "Niccolò Ferducci to Ferdinand I, Fiume, 19 July 1532 (HHStA StAbt Türkei I 2-2-19, fols. 60–61)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/ferducci1532", "number": 1343 }, { "submitted": "2026-10-27", "solver": "WAINUT", "source": "https://dbourdeau.github.io/cyphersolver/greenhow1861.html", "name": "Rose O'Neal Greenhow, cipher letter on mourning paper, Washington, seized 23 Aug 1861 (NARA RG 59, naId 1634036)", "type": "MASC", "model": "Not reported", "version": "Not reported", "role": "key transfer: external key matched and applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/greenhow1861", "number": 1342 }, { "submitted": "2026-10-27", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/huyson1547.html", "name": "Henry II → Suleiman the Magnificent (credence for d'Huyson and two other letters), Malvezzi's enciphered Latin copy, Constantinople, autumn 1547 (HHStA Wien, Türkei I 7-2-18, fols. 143r–146r)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: external key matched and applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/huyson1547", "number": 1341 }, { "submitted": "2026-10-27", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/jefferson1787.html", "name": "Thomas Barclay, Madrid → the American Commissioners, 10 Apr 1786 (LoC Jefferson Papers ser. 1, mtj1 005_0494-0497)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/jefferson1787", "number": 1340 }, { "submitted": "2026-10-27", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/jefferson1787.html", "name": "Thomas Barclay, Lorient → Jefferson, undated [c. 3 Jul 1787], two coded footnotes (LoC Jefferson Papers ser. 1, mtj1 007_0476-0481)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/jefferson1787", "number": 1339 }, { "submitted": "2026-10-27", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/jefferson1787.html", "name": "Jefferson, Paris → Thomas Barclay, 4 Jul 1787 (LoC Jefferson Papers ser. 1, mtj1 007_0605-0606, press copy)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/jefferson1787", "number": 1338 }, { "submitted": "2026-10-27", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/jefferson1787.html", "name": "Jefferson, Paris → William Carmichael, 25 Sep 1787 (LoC Jefferson Papers ser. 1, mtj1 008_0145-0149)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/jefferson1787", "number": 1337 }, { "submitted": "2026-10-27", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/jefferson1787.html", "name": "Jefferson, Paris → William Carmichael, 15 Dec 1787, test line (LoC Jefferson Papers ser. 1, mtj1 008_0689)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/jefferson1787", "number": 1336 }, { "submitted": "2026-10-27", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/jefferson1787.html", "name": "William Carmichael, Aranjuez → Jefferson, 8 May 1788 (LoC Jefferson Papers ser. 1, mtj1 009_0339-0342)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/jefferson1787", "number": 1335 }, { "submitted": "2026-10-27", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/jefferson1787.html", "name": "William Carmichael, Madrid → Jefferson, 29 May 1788 (LoC Jefferson Papers ser. 1, mtj1 009_0469-0472)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/jefferson1787", "number": 1334 }, { "submitted": "2026-10-27", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/jefferson1787.html", "name": "Jefferson, Paris → William Carmichael, 3 Jun 1788 (LoC Jefferson Papers ser. 1, mtj1 009_0503-0511)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/jefferson1787", "number": 1333 }, { "submitted": "2026-10-27", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/jefferson1787.html", "name": "William Carmichael, Madrid → Jefferson, 5 Jun 1788 (LoC Jefferson Papers ser. 1, mtj1 009_0516-0517)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/jefferson1787", "number": 1332 }, { "submitted": "2026-10-27", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/jefferson1787.html", "name": "William Carmichael, Madrid → Jefferson, 24 Jul 1788 (LoC Jefferson Papers ser. 1, mtj1 009_0892-0895)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/jefferson1787", "number": 1331 }, { "submitted": "2026-10-27", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/jefferson1787.html", "name": "Jefferson, Paris → William Carmichael, 25 Dec 1788 (LoC Jefferson Papers ser. 1, mtj1 010_0626-0630, press copy)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/jefferson1787", "number": 1330 }, { "submitted": "2026-10-27", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/jefferson1787.html", "name": "William Carmichael, Madrid → Jefferson, 26 Jan 1789 (LoC Jefferson Papers ser. 1, mtj1 010_0877-0885)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/jefferson1787", "number": 1329 }, { "submitted": "2026-10-27", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/jefferson1787.html", "name": "Jefferson, Paris → William Carmichael, 9 Aug 1789 (LoC Jefferson Papers ser. 1, mtj1 011_0780-0783, press copy)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/jefferson1787", "number": 1328 }, { "submitted": "2026-10-27", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/jefferson1787.html", "name": "William Short, Paris → John Jay, 9 Oct 1789, No. 2 (NARA RG 59, Despatches France vol. 1, M34 roll 2)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/jefferson1787", "number": 1327 }, { "submitted": "2026-10-27", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/jefferson1787.html", "name": "William Short, Paris → John Jay, 25 Oct 1789, No. 5 (NARA RG 59, Despatches France vol. 1, M34 roll 2)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/jefferson1787", "number": 1326 }, { "submitted": "2026-10-27", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/jefferson1787.html", "name": "William Short, Paris → John Jay, 28 Oct 1789, No. 6 (NARA RG 59, Despatches France vol. 1, M34 roll 2)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/jefferson1787", "number": 1325 }, { "submitted": "2026-10-27", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/jefferson1787.html", "name": "Jefferson, Philadelphia → William Carmichael, 11 Apr 1791 (LoC Jefferson Papers ser. 1, mtj1 014_0279-0285)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/jefferson1787", "number": 1324 }, { "submitted": "2026-10-27", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/joao1642.html", "name": "João IV to the marquês de Nisa, Lisbon, 28 Dec 1642 (ANTT Manuscritos da Livraria 1017, letter 9)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/joao1642", "number": 1323 }, { "submitted": "2026-10-27", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/joao1642.html", "name": "João IV to the marquês de Nisa, Lisbon, 31 Dec 1642 (ANTT Manuscritos da Livraria 1017, letter 13)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/joao1642", "number": 1322 }, { "submitted": "2026-10-27", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/joao1642.html", "name": "João IV to the marquês de Nisa, Évora, 9 Oct 1643 (ANTT Manuscritos da Livraria 1017, letter 44)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/joao1642", "number": 1321 }, { "submitted": "2026-10-27", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/joao1642.html", "name": "João IV to the marquês de Nisa, Évora, 9 Oct 1643, covering Luís Pereira de Castro's instructions (ANTT Manuscritos da Livraria 1017, letter 49)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/joao1642", "number": 1320 }, { "submitted": "2026-10-27", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/joao1642.html", "name": "João IV to the marquês de Nisa, Lisbon, 20 Nov 1643 (ANTT Manuscritos da Livraria 1017, letter 56)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/joao1642", "number": 1319 }, { "submitted": "2026-10-27", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/joao1642.html", "name": "João IV to the marquês de Nisa, Lisbon, 21 Sep 1644 (ANTT Manuscritos da Livraria 1017, letter 153)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/joao1642", "number": 1318 }, { "submitted": "2026-10-27", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/lopehurtado1520.html", "name": "Lope Hurtado de Mendoza to Charles V, Tordesillas, 10 December 1520 (AGS Patronato Real, PTR,LEG,2,36,8, ff. 1r-1v)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/lopehurtado1520", "number": 1317 }, { "submitted": "2026-10-27", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/marmont1812.html", "name": "Marshal Jourdan to Marshal Soult, Madrid, 28 May 1812, Spanish intercept copy (AHN Diversos-Colecciones 134, N.34)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/marmont1812", "number": 1316 }, { "submitted": "2026-10-27", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/marmont1812.html", "name": "Marshal Marmont to Marshal Jourdan, Salamanca, 1 June 1812, Spanish intercept copy (AHN Diversos-Colecciones 134, N.73)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/marmont1812", "number": 1315 }, { "submitted": "2026-10-27", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/mercier1761.html", "name": "Le Vassor de La Touche and Le Mercier de La Rivière to Berryer, Martinique, 12 Jun 1761, duplicata (ANOM COL C8 A 64 f° 1)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/mercier1761", "number": 1314 }, { "submitted": "2026-10-27", "solver": "WAINUT", "source": "https://dbourdeau.github.io/cyphersolver/puebla1506.html", "name": "Rodrigo González de Puebla to Miguel Pérez de Almazán, London, 21 Apr 1506 (AGS Patronato Real leg. 54 doc. 78, f. 179)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/puebla1506", "number": 1313 }, { "submitted": "2026-10-27", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/stade1710.html", "name": "Charles XII → the Council of the Realm (Rådet), Stockholm, Bender, 26 Apr 1710, copy for the Rådet (NLA Stade Rep. 5a Nr. 670 fols. 83r–84r)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/stade1710", "number": 1312 }, { "submitted": "2026-10-27", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/stade1710.html", "name": "Charles XII → envoys Leijoncrona (London) and Palmquist (The Hague), Bender, 26 Apr 1710, copy for the envoys (NLA Stade Rep. 5a Nr. 670 fol. 85r–v)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/stade1710", "number": 1311 }, { "submitted": "2026-10-27", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/vilaflor1663.html", "name": "Afonso VI to the Count of Vila Flor, Lisbon, 13 May 1663 (ANTT Luís de Miranda Pereira liv. 2, image 87)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/vilaflor1663", "number": 1310 }, { "submitted": "2026-10-27", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/vilaflor1663.html", "name": "Afonso VI to the Count of Vila Flor, Lisbon, 15 May 1663, long letter, copy 1 (ANTT Luís de Miranda Pereira liv. 2, images 53, 54, 59)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/vilaflor1663", "number": 1309 }, { "submitted": "2026-10-27", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/vilaflor1663.html", "name": "Afonso VI to the Count of Vila Flor, Lisbon, 15 May 1663, long letter, copy 2 (separate encipherment; ANTT Luís de Miranda Pereira liv. 2, images 55-57)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/vilaflor1663", "number": 1308 }, { "submitted": "2026-10-27", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/vilaflor1663.html", "name": "Afonso VI to the Count of Vila Flor, Lisbon, 15 May 1663, note 'a todo o risco' (ANTT Luís de Miranda Pereira liv. 2, image 69)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/vilaflor1663", "number": 1307 }, { "submitted": "2026-10-27", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/vilaflor1663.html", "name": "Afonso VI to the Count of Vila Flor, Lisbon, 15 May 1663, note, second ciphered copy (ANTT Luís de Miranda Pereira liv. 2, image 71)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/vilaflor1663", "number": 1306 }, { "submitted": "2026-10-27", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/vilaflor1663.html", "name": "Afonso VI to the Count of Vila Flor, Lisbon, 26 May 1663 (ANTT Luís de Miranda Pereira liv. 2, image 37)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/vilaflor1663", "number": 1305 }, { "submitted": "2026-10-27", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/vilaflor1663.html", "name": "Afonso VI to the Count of Vila Flor, Lisbon, 26 May 1663, second ciphered copy (via) (ANTT Luís de Miranda Pereira liv. 2, image 39)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/vilaflor1663", "number": 1304 }, { "submitted": "2026-10-27", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/wasowicz1662.html", "name": "Ludwik Wąsowicz → Aleksander Michał Lubomirski, 29 Nov 1662 (ANK AKPot 3227 p. 137; DECODE R7503)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/wasowicz1662", "number": 1303 }, { "submitted": "2026-10-27", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/wasowicz1662.html", "name": "Ludwik Wąsowicz → Aleksander Michał Lubomirski, undated [Dec 1662 – Jan 1663] (ANK AKPot 3227 pp. 181–183; DECODE R7504)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/wasowicz1662", "number": 1302 }, { "submitted": "2026-10-27", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/wasowicz1662.html", "name": "Ludwik Wąsowicz → Aleksander Michał Lubomirski, 25 Jan 1663 (ANK AKPot 3227 p. 200; DECODE R7505)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/wasowicz1662", "number": 1301 }, { "submitted": "2026-10-27", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/wasowicz1662.html", "name": "Ludwik Wąsowicz → Aleksander Michał Lubomirski, 17–18 Feb 1663 (ANK AKPot 3227 p. 209; DECODE R7506)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/wasowicz1662", "number": 1300 }, { "submitted": "2026-10-27", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/wasowicz1662.html", "name": "Ludwik Wąsowicz → Aleksander Michał Lubomirski, 19 Mar 1663 (ANK AKPot 3227 p. 225; DECODE R7507)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/wasowicz1662", "number": 1299 }, { "submitted": "2026-10-27", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/wasowicz1662.html", "name": "Ludwik Wąsowicz → Aleksander Michał Lubomirski, 5 May 1663 (ANK AKPot 3227 p. 235; DECODE R7508)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/wasowicz1662", "number": 1298 }, { "submitted": "2026-10-27", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/wasowicz1662.html", "name": "Ludwik Wąsowicz → Aleksander Michał Lubomirski, Jarosław, 9 Dec 1663 (ANK AKPot 3227 pp. 239, 245–248; DECODE R7509 + R7510)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/wasowicz1662", "number": 1297 }, { "submitted": "2026-10-26", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1187", "name": "cpc_--_UK__UK_Croydon Surrey_", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment; corrections after independent review by Claude Opus 5.5", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1187", "number": 1296 }, { "submitted": "2026-10-26", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1189", "name": "cpc_--_USA_Hanford_USA_Hanford, California_", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "manual transcription, analysis, decipherment; independent review by Claude Opus 5.5; report and closing prepared by Claude Opus 5.5 on the solver's behalf", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1189", "number": 1295 }, { "submitted": "2026-10-26", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1017", "name": "cpc_1905-06-14_DE_Hamburg_DE_Altona_", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "manual transcription, analysis, decipherment; corrections after independent review by Claude Opus 5.5", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1017", "number": 1294 }, { "submitted": "2026-10-26", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1190", "name": "cpc_1907-09-14_USA_Carthage, NY_USA_Denmark, New York_", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "manual transcription, analysis, decipherment; independent review by Claude Opus 5.5; report and closing prepared by Claude Opus 5.5 on the solver's behalf", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1190", "number": 1293 }, { "submitted": "2026-10-26", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1188", "name": "cpc_1913-04-02_USA_Gr_USA__", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment; corrections after independent review by Claude Opus 5.5", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1188", "number": 1292 }, { "submitted": "2026-10-26", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/56", "name": "Encrypted postcard from 1906 - Market Drayton.", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment; corrections after independent review by Claude Opus 5.5", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-56", "number": 1291 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince of Orange, London, 17 Jan 1797, continuation leaf (KHA A35-1450, image 146887)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1290 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, London, undated letter, Jan-Feb 1797, closing leaf (KHA A35-1450, image 146895)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1289 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, London, undated news letter (Mantua/Italy), Jan-Feb 1797 (KHA A35-1450, image 146900)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1288 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, London, 10 Feb 1797 (KHA A35-1450, images 146902-146903)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1287 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, London, 14 Feb 1797, continuation leaf (KHA A35-1450, image 146905)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1286 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, London, 24 Feb 1797 (KHA A35-1450, image 146914)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1285 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, London, 18 Apr 1797, continuation leaf (KHA A35-1450, image 146970)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1284 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, London, undated letter, Apr-May 1797 (KHA A35-1450, image 146984)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1283 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, London, undated letter, May 1797 (KHA A35-1450, image 146989)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1282 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, London, 20 Jun 1797 (KHA A35-1450, images 147013-147014)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1281 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, London, undated letter ('Deserteurs Prussiens...'), c. Jul 1797 (KHA A35-1450, image 147030)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1280 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "Letter No. 15 to M.L. d'Yvoy, dated London 11 Jul 1797 (KHA A35-1450, images 147018-147019)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1279 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "The Hereditary Prince to M.L. d'Yvoy, No. 16, Jul 1797 (KHA A35-1450, images 147034-147038)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1278 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, London, 11 Aug 1797 (KHA A35-1450, image 147063)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1277 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, London, 15 (or 10) Aug 1797 (KHA A35-1450, image 147068)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1276 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, London, 18 (or 15) Aug 1797 (KHA A35-1450, image 147071)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1275 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "The Hereditary Prince to M.L. d'Yvoy, No. 20, 2 Sep 1797 (KHA A35-1450, images 147085-147087)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1274 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, Hampton Court, 8 Sep 1797 (KHA A35-1450, image 147094)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1273 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, London, 12 Sep 1797 (KHA A35-1450, image 147096)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1272 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, London, 15 Sep 1797 (KHA A35-1450, image 147098)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1271 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "The Hereditary Prince to M.L. d'Yvoy, No. 21, Schonhausen, 16 Sep 1797 (KHA A35-1450, images 147100-147102)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1270 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, London, 18 (or 19) Sep 1797, with Dutch postscript leaf (KHA A35-1450, images 147104-147105)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1269 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "The Hereditary Prince to M.L. d'Yvoy, No. 22, Schonhausen, 22 Sep 1797 (KHA A35-1450, image 147106; copies 147107-147108)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1268 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "The Hereditary Prince to M.L. d'Yvoy, No. 23, Schonhausen, 30 Sep 1797 (KHA A35-1450, images 147116-147118)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1267 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, London, 6 Oct 1797 (KHA A35-1450, image 147120)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1266 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "The Hereditary Prince to M.L. d'Yvoy, No. 24, Berlin, 7 Oct 1797 (KHA A35-1450, images 147123-147125)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1265 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, Hampton Court, 10 Oct 1797 (KHA A35-1450, image 147127)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1264 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, London, 13 Oct 1797 (KHA A35-1450, image 147129)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1263 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, Hampton Court, 17 Oct 1797 (KHA A35-1450, image 147131)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1262 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "The Hereditary Prince to M.L. d'Yvoy, Berlin, 24 Oct 1797 (KHA A35-1450, images 147134-147136)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1261 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, London, 24 Oct 1797, second leaf (KHA A35-1450, image 147142)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1260 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, London, 31 Oct 1797 (postscript) (KHA A35-1450, image 147149)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1259 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, London, 3 Nov 1797 (KHA A35-1450, image 147151)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1258 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "The Hereditary Prince to M.L. d'Yvoy, No. 26, Berlin, 4 Nov 1797 (KHA A35-1450, images 147154-147156)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1257 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, London, 7 Nov 1797 (KHA A35-1450, image 147159)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1256 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, London, 10 Nov 1797 (KHA A35-1450, image 147170)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1255 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, Hampton Court, 1 Dec 1797 (KHA A35-1450, image 147185)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1254 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, London, 8 Dec 1797 (KHA A35-1450, image 147189)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1253 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, Hampton Court, 12 Dec 1797 (KHA A35-1450, image 147192)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1252 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, Hampton Court, 29 Dec 1797 (KHA A35-1450, image 147201)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1251 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, Hampton Court, 16 Jan 1798 (KHA A35-1451, image 147205)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1250 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, Hampton Court, 23 Jan 1798 (KHA A35-1451, image 147210)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1249 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, Hampton Court, 26 Jan 1798 (KHA A35-1451, images 147214-147215)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1248 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "The Hereditary Prince to M.L. d'Yvoy, Berlin, 30 (or 24) Jan 1798 (KHA A35-1451, images 147212, 147213, 147216)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1247 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, undated letter ('Duc de Norfolk'), early 1798, continuation leaf (KHA A35-1451, image 147224)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1246 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "The Hereditary Prince to M.L. d'Yvoy, Berlin, 20 Feb 1798 (KHA A35-1451, images 147225-147227)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1245 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "The Hereditary Prince to M.L. d'Yvoy, Berlin, Mar/Apr 1798 (KHA A35-1451, images 147337-147339)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1244 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, Hampton Court, 27 Mar 1798 (KHA A35-1451, image 147344)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1243 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, Hampton Court, 17 Apr 1798 (KHA A35-1451, image 147351)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1242 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, Hampton Court, 1 Jun 1798 (KHA A35-1451, image 147375)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1241 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, London, 15 Jun 1798, with Dutch continuation leaf (KHA A35-1451, images 147237, 147239)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1240 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, Hampton Court, 19 Jun 1798 (KHA A35-1451, image 147244)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1239 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, Hampton Court, 3 Jul 1798 (KHA A35-1451, image 147249)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1238 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, Hampton Court, 13 Jul 1798 (KHA A35-1451, image 147255)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1237 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, Hampton Court, 24 Jul 1798 (KHA A35-1451, image 147257)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1236 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, Hampton Court, 7 Aug 1798 (KHA A35-1451, image 147261)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1235 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, Hampton Court, 14 Aug 1798 (KHA A35-1451, image 147263)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1234 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, Hampton Court, 21 Aug 1798 (KHA A35-1451, image 147265)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1233 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "The Hereditary Prince to M.L. d'Yvoy, No. 13, Schonhausen, 25 Aug 1798 (KHA A35-1451, images 147267-147269)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1232 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, Hampton Court, 11 Sep 1798, continuation leaf (KHA A35-1451, image 147283)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1231 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, London, 14 Sep 1798 (KHA A35-1451, image 147289)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1230 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "The Hereditary Prince to M.L. d'Yvoy, Berlin, 2 Mar 1799 (KHA A35-1452, images 147392-147394)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1229 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, Bremen, 30 (or 26) Mar 1799 (KHA A35-1452, image 147403)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1228 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "The Hereditary Prince to M.L. d'Yvoy, Berlin, 13 Apr 1799 (KHA A35-1452, images 147408-147410)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1227 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, Rees, 16 Apr 1799 (KHA A35-1452, image 147412)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1226 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, Emmerich, 24 Apr 1799 (KHA A35-1452, image 147417)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1225 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, Emmerich, 1 May 1799 (KHA A35-1452, image 147428)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1224 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, Emmerich, 3 May 1799 (KHA A35-1452, image 147437)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1223 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "M.L. d'Yvoy to the Hereditary Prince, Emmerich, 11 May 1799 (KHA A35-1452, image 147442)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1222 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "The Hereditary Prince to M.L. d'Yvoy, Berlin, 1 Jun 1799 (KHA A35-1452, images 147470-147472)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1221 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "The Hereditary Prince to M.L. d'Yvoy, Schonhausen, 7 Jun 1799 (KHA A35-1452, image 147481; copies 147480, 147483)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1220 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "The Hereditary Prince to M.L. d'Yvoy, Schonhausen, 28 Jun 1799 (KHA A35-1452, image 147508)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1219 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "name": "The Hereditary Prince to M.L. d'Yvoy, Schonhausen, 13 Jul 1799 (KHA A35-1452, images 147529, 147531, 147533)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Agents screened 1,029 scans and identified 196 pages containing code; two dictionaries reconstructed from existing contemporary decipherments; leave-one-page-out validation about 78% and 81%; not a new ciphertext-only break and independent full transcription review absent", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/yvoy1797.html", "number": 1218 }, { "submitted": "2026-10-26", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1437", "name": "pc_hcp_118", "type": "MASC/partial", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "manual transcription, analysis, decipherment; independent review by Claude Opus 5.5; report and closing prepared by Claude Opus 5.5 on the solver's behalf", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1437", "number": 1217 }, { "submitted": "2026-10-26", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1438", "name": "pc_hcp_119", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "manual transcription, analysis, decipherment; independent review by Claude Opus 5.5; report and closing prepared by Claude Opus 5.5 on the solver's behalf", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1438", "number": 1216 }, { "submitted": "2026-10-26", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1440", "name": "pc_hcp_121", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "manual transcription, analysis, decipherment; independent review by Claude Opus 5.5; report and closing prepared by Claude Opus 5.5 on the solver's behalf", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1440", "number": 1215 }, { "submitted": "2026-10-26", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1442", "name": "pc_hcp_123", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "manual transcription, analysis, decipherment; independent review by Claude Opus 5.5; report and closing prepared by Claude Opus 5.5 on the solver's behalf", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1442", "number": 1214 }, { "submitted": "2026-10-26", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1446", "name": "pc_hcp_127", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "manual transcription, analysis, decipherment; independent review by Claude Opus 5.5; report and closing prepared by Claude Opus 5.5 on the solver's behalf", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1446", "number": 1213 }, { "submitted": "2026-10-26", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1450", "name": "pc_hcp_131", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "manual transcription, analysis, decipherment; independent review by Claude Opus 5.5; report and closing prepared by Claude Opus 5.5 on the solver's behalf", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1450", "number": 1212 }, { "submitted": "2026-10-26", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1463", "name": "pc_hcp_144", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "manual transcription, analysis, decipherment; independent review by Claude Opus 5.5; report and closing prepared by Claude Opus 5.5 on the solver's behalf", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1463", "number": 1211 }, { "submitted": "2026-10-26", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1467", "name": "pc_hcp_148", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment; corrections after independent review by Claude Opus 5.5", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1467", "number": 1210 }, { "submitted": "2026-10-26", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1471", "name": "pc_hcp_152", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "manual transcription, analysis, decipherment; independent review by Claude Opus 5.5; report and closing prepared by Claude Opus 5.5 on the solver's behalf", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1471", "number": 1209 }, { "submitted": "2026-10-26", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1491", "name": "pc_hcp_172", "type": "Mirror writing", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "manual transcription, analysis, decipherment; independent review by Claude Opus 5.5; report and closing prepared by Claude Opus 5.5 on the solver's behalf", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1491", "number": 1208 }, { "submitted": "2026-10-26", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1492", "name": "pc_hcp_173", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment; corrections after independent review by Claude Opus 5.5", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1492", "number": 1207 }, { "submitted": "2026-10-26", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1496", "name": "pc_hcp_177", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "manual transcription, analysis, decipherment; independent review by Claude Opus 5.5; report and closing prepared by Claude Opus 5.5 on the solver's behalf", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1496", "number": 1206 }, { "submitted": "2026-10-26", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1497", "name": "pc_hcp_178", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment; corrections after independent review by Claude Opus 5.5", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1497", "number": 1205 }, { "submitted": "2026-10-26", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1498", "name": "pc_hcp_179", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "manual transcription, analysis, decipherment; independent review by Claude Opus 5.5; report and closing prepared by Claude Opus 5.5 on the solver's behalf", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1498", "number": 1204 }, { "submitted": "2026-10-26", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1504", "name": "pc_hcp_185", "type": "False word division (respacing)", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "manual transcription, analysis, decipherment; independent review by Claude Opus 5.5; report and closing prepared by Claude Opus 5.5 on the solver's behalf", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1504", "number": 1203 }, { "submitted": "2026-10-26", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1506", "name": "pc_hcp_187", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment; corrections after independent review by Claude Opus 5.5", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1506", "number": 1202 }, { "submitted": "2026-10-26", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1507", "name": "pc_hcp_188", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "manual transcription, analysis, decipherment; independent review by Claude Opus 5.5; report and closing prepared by Claude Opus 5.5 on the solver's behalf", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1507", "number": 1201 }, { "submitted": "2026-10-26", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1511", "name": "pc_hcp_192", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment; corrections after independent review by Claude Opus 5.5", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1511", "number": 1200 }, { "submitted": "2026-10-26", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1512", "name": "pc_hcp_193", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment; corrections after independent review by Claude Opus 5.5", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1512", "number": 1199 }, { "submitted": "2026-10-26", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1514", "name": "pc_hcp_195", "type": "MASC + transposition", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "manual transcription, analysis, decipherment; independent review by Claude Opus 5.5; report and closing prepared by Claude Opus 5.5 on the solver's behalf", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1514", "number": 1198 }, { "submitted": "2026-10-26", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1819", "name": "pc_hcp_500", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "manual transcription, analysis, decipherment; independent review by Claude Opus 5.5; report and closing prepared by Claude Opus 5.5 on the solver's behalf", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1819", "number": 1197 }, { "submitted": "2026-10-26", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1825", "name": "pc_hcp_506", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment; corrections after independent review by Claude Opus 5.5", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1825", "number": 1196 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/mountflorence1801.html", "name": "James C. Mountflorence to the Secretary of State, Paris, 18 March 1801 (NARA RG 59, Despatches from US Consuls in Paris, T1 roll 1, frame 0097)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/mountflorence1801", "number": 1195 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/murray1801.html", "name": "William Vans Murray to James Madison, Paris, 26 June 1801, despatch No. 5, coded postscript, duplicate via Bordeaux (NARA RG 59, Netherlands vol. 4, M42 reel 5, frames 0397-0398)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/murray1801", "number": 1194 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/schoning1783.html", "name": "G. von Schöning to J.C. van der Hoop, No. 1, Potsdam, 28 July 1783 (KHA A32-603, s001)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/schoning1783", "number": 1193 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/schoning1783.html", "name": "G. von Schöning to J.C. van der Hoop, No. 2, Magdeburg, 3 Aug 1783 (KHA A32-603, s003)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/schoning1783", "number": 1192 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/schoning1783.html", "name": "G. von Schöning to J.C. van der Hoop, No. 3, Potsdam, 8 Aug 1783 (KHA A32-603, s005)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/schoning1783", "number": 1191 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/schoning1783.html", "name": "G. von Schöning to J.C. van der Hoop, No. 6, Berlin, 16 Aug 1783, code numbers only (KHA A32-603, s025)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/schoning1783", "number": 1190 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/schoning1783.html", "name": "G. von Schöning to J.C. van der Hoop, Nordhausen, ? Oct 1783, code numbers (KHA A32-603, s027)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/schoning1783", "number": 1189 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/schoning1783.html", "name": "G. von Schöning to J.C. van der Hoop, Potsdam, 9 Dec 1783, code numbers only (KHA A32-603, s109-110)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/schoning1783", "number": 1188 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/schoning1783.html", "name": "G. von Schöning to J.C. van der Hoop, Potsdam, 24 Dec 1783 (KHA A32-603, s129-130)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/schoning1783", "number": 1187 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/schoning1783.html", "name": "G. von Schöning to J.C. van der Hoop, Potsdam, 9 Jan 1784, code numbers only (KHA A32-603, s142)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/schoning1783", "number": 1186 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/schoning1783.html", "name": "G. von Schöning to J.C. van der Hoop, Potsdam, 15 Jan 1784 (KHA A32-603, s154-155)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/schoning1783", "number": 1185 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/schoning1783.html", "name": "G. von Schöning to J.C. van der Hoop, Potsdam, 26-27 Jan 1784, with P.S. (alliance plan) (KHA A32-603, s172-176)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/schoning1783", "number": 1184 }, { "submitted": "2026-10-26", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/schoning1783.html", "name": "G. von Schöning to J.C. van der Hoop, S[tettin?], 10 July 1784 (KHA A32-603, s204-205)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/schoning1783", "number": 1183 }, { "submitted": "2026-10-24", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1420", "name": "pc_hcp_101", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_101_report.pdf", "number": 1182 }, { "submitted": "2026-10-24", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1421", "name": "pc_hcp_102", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_102_report.pdf", "number": 1181 }, { "submitted": "2026-10-24", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1424", "name": "pc_hcp_105", "type": "Transposition with nulls", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, partial decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_105_report.pdf", "number": 1180 }, { "submitted": "2026-10-24", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1425", "name": "pc_hcp_106", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_106_report.pdf", "number": 1179 }, { "submitted": "2026-10-24", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1426", "name": "pc_hcp_107", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_107_report.pdf", "number": 1178 }, { "submitted": "2026-10-24", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1427", "name": "pc_hcp_108", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_108_report.pdf", "number": 1177 }, { "submitted": "2026-10-24", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1428", "name": "pc_hcp_109", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, partial decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_109_report.pdf", "number": 1176 }, { "submitted": "2026-10-24", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1429", "name": "pc_hcp_110", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, partial decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_110_report.pdf", "number": 1175 }, { "submitted": "2026-10-24", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1430", "name": "pc_hcp_111", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, partial decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_111_report.pdf", "number": 1174 }, { "submitted": "2026-10-24", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1431", "name": "pc_hcp_112", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_112_report.pdf", "number": 1173 }, { "submitted": "2026-10-24", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1435", "name": "pc_hcp_116", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_116_report.pdf", "number": 1172 }, { "submitted": "2026-10-24", "solver": "Michael Brackx", "source": "https://dbourdeau.github.io/cyphersolver/malicorne1586.html", "name": "Jean de Chourses, sieur de Malicorne to Henri III, Niort, 21 April 1586 (BnF fr. 15572 ff. 162-164)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/malicorne1586", "number": 1171 }, { "submitted": "2026-10-23", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/senisteros1605.html", "name": "Juan Gara de Senisteros to Juan de la Peña, 23 December 1605", "type": "MASC/vowels", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Eleven-page Spanish letter deciphered using simple substitution inferred from first ciphertext line; about 97% of encrypted words read; script-assisted decoding, full independent expert review absent; AI mainly assisted transcription", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/senisteros1605.html", "number": 1170 }, { "submitted": "2026-10-23", "solver": "Daniel Bourdeau", "source": "https://de-crypt.org/decrypt-web/RecordsView/4937", "name": "Letter to the Hofmeister (Ferenc Bethlen), 1646 (Romanian National Archives Cluj, Keresdi Bethlen 15-01; DECODE R4937)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only recovery of two alphabets, second newly broken on 2026-10-23; 2,775 of 4,785 cipher letters read; one historical plaintext supports the first alphabet, independent transcription comparison supports the second; complete independent verification pending; with simulated annealing", "agents": "Not reported", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/transylvania1645.html", "number": 1169 }, { "submitted": "2026-10-23", "solver": "Daniel Bourdeau", "source": "https://de-crypt.org/decrypt-web/RecordsView/4939", "name": "Rákóczi brothers to Ferenc Bethlen and András Klobusiczky, Alba, [?9 Oct] 1648 (Keresdi Bethlen 15-03; DECODE R4939)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only recovery of two alphabets, second newly broken on 2026-10-23; 2,775 of 4,785 cipher letters read; one historical plaintext supports the first alphabet, independent transcription comparison supports the second; complete independent verification pending; with simulated annealing", "agents": "Not reported", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/transylvania1645.html", "number": 1168 }, { "submitted": "2026-10-23", "solver": "Daniel Bourdeau", "source": "https://de-crypt.org/decrypt-web/RecordsView/4940", "name": "Zsigmond Rákóczi to Ferenc Bethlen, Munkács, 2 August 1648 (Keresdi Bethlen 15-04; DECODE R4940)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only recovery of two alphabets, second newly broken on 2026-10-23; 2,775 of 4,785 cipher letters read; one historical plaintext supports the first alphabet, independent transcription comparison supports the second; complete independent verification pending; with simulated annealing", "agents": "Not reported", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/transylvania1645.html", "number": 1167 }, { "submitted": "2026-10-23", "solver": "Daniel Bourdeau", "source": "https://de-crypt.org/decrypt-web/RecordsView/4942", "name": "Zsigmond Rákóczi to Ferenc Bethlen, 1648 (Keresdi Bethlen 15-06; DECODE R4942)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only recovery of two alphabets, second newly broken on 2026-10-23; 2,775 of 4,785 cipher letters read; one historical plaintext supports the first alphabet, independent transcription comparison supports the second; complete independent verification pending; with simulated annealing", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/transylvania1645.html", "number": 1166 }, { "submitted": "2026-10-23", "solver": "Ryan Xu", "source": "https://dbourdeau.github.io/cyphersolver/r9424.html", "name": "Letter to Duke Wilhelm V of Bavaria, 12 June 1583, DECODE R9424", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only key recovery; approximately 92.8% of words read; independent comparison against archival photographs, with unresolved names and signs", "agents": "Not reported", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/r9424.html", "number": 1165 }, { "submitted": "2026-10-23", "solver": "Michael Brackx", "source": "https://dbourdeau.github.io/cyphersolver/matignon1586tuple.html", "name": "Matignon's tuple cipher, May 1586, BnF fr. 15572", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude (version not reported)", "role": "AI-assisted transcription of 2,152 cipher groups across ten pages; key recovered from contemporary interlinear glosses; nine pages read at least partially, independent full manuscript verification pending", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/matignon1586tuple.html", "number": 1164 }, { "submitted": "2026-10-23", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1419", "name": "pc_hcp_100", "type": "Transposition with nulls", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_100_report.pdf", "number": 1163 }, { "submitted": "2026-10-23", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1410", "name": "pc_hcp_91", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_91_report.pdf", "number": 1162 }, { "submitted": "2026-10-23", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1411", "name": "pc_hcp_92", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_92_report.pdf", "number": 1161 }, { "submitted": "2026-10-23", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1412", "name": "pc_hcp_93", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_93_report.pdf", "number": 1160 }, { "submitted": "2026-10-23", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1413", "name": "pc_hcp_94", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_94_report.pdf", "number": 1159 }, { "submitted": "2026-10-23", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1414", "name": "pc_hcp_95", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_95_report.pdf", "number": 1158 }, { "submitted": "2026-10-23", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1415", "name": "pc_hcp_96", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_96_report.pdf", "number": 1157 }, { "submitted": "2026-10-23", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1416", "name": "pc_hcp_97", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_97_report.pdf", "number": 1156 }, { "submitted": "2026-10-23", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1417", "name": "pc_hcp_98", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_98_report.pdf", "number": 1155 }, { "submitted": "2026-10-23", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1418", "name": "pc_hcp_99", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_99_report.pdf", "number": 1154 }, { "submitted": "2026-10-23", "solver": "Feyseel Nur", "source": "https://dbourdeau.github.io/cyphersolver/dedem1788.html", "name": "F.G. van Dedem to Grand Pensionary L.P. van de Spiegel, Pera (Constantinople), 15 Jan 1789, duplicate (NA 3.01.26 inv. 212; DECODE R2122)", "type": "Code", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported)", "role": "key transfer: external key matched and applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/dedem1788", "number": 1153 }, { "submitted": "2026-10-23", "solver": "Feyseel Nur", "source": "https://dbourdeau.github.io/cyphersolver/dedem1788.html", "name": "F.G. van Dedem to Grand Pensionary L.P. van de Spiegel, Pera (Constantinople), 9 Feb 1793 (NA 3.01.26 inv. 212; DECODE R2131)", "type": "Code", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported)", "role": "key transfer: external key matched and applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/dedem1788", "number": 1152 }, { "submitted": "2026-10-23", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/vetesi1705.html", "name": "László Vetési Kökényesdi ('Cassimirus Miloftzki') to Ferenc Rákóczi II, 9 Jan 1706 (Ráday Archives C64-4d2-10 ff. 92-95; DECODE R473)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: external key matched and applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/vetesi1705", "number": 1151 }, { "submitted": "2026-10-22", "solver": "Michael Brackx", "source": "https://dbourdeau.github.io/cyphersolver/matignon1586.html", "name": "Forget de Fresnes to Villeroy, 31 Dec 1585 (BnF fr. 15571 f. 177r-v)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude (version not reported)", "role": "AI-assisted re-transcription and key correction across 15 pages and 16,677 cipher tokens; 10,616 tokens form French word runs; compared against contemporary clear copies, full independent image audit missing; known key applied", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/matignon1586.html", "number": 1150 }, { "submitted": "2026-10-22", "solver": "Michael Brackx", "source": "https://dbourdeau.github.io/cyphersolver/matignon1586.html", "name": "Mayenne to Henri III, 6 Jan 1586, end of the f. 18 despatch (BnF fr. 15572 f. 20r; clear copy f. 19v)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude (version not reported)", "role": "AI-assisted re-transcription and key correction across 15 pages and 16,677 cipher tokens; 10,616 tokens form French word runs; compared against contemporary clear copies, full independent image audit missing; known key applied", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/matignon1586.html", "number": 1149 }, { "submitted": "2026-10-22", "solver": "Michael Brackx", "source": "https://dbourdeau.github.io/cyphersolver/matignon1586.html", "name": "Mayenne to Villeroy, Villeneuve-d'Agenais, March 1586 (BnF fr. 15572 f. 110)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude (version not reported)", "role": "AI-assisted re-transcription and key correction across 15 pages and 16,677 cipher tokens; 10,616 tokens form French word runs; compared against contemporary clear copies, full independent image audit missing; known key applied", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/matignon1586.html", "number": 1148 }, { "submitted": "2026-10-22", "solver": "Michael Brackx", "source": "https://dbourdeau.github.io/cyphersolver/matignon1586.html", "name": "Mayenne to Henri III, Marmande, March 1586 (BnF fr. 15572 ff. 123-124)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude (version not reported)", "role": "AI-assisted re-transcription and key correction across 15 pages and 16,677 cipher tokens; 10,616 tokens form French word runs; compared against contemporary clear copies, full independent image audit missing; known key applied", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/matignon1586.html", "number": 1147 }, { "submitted": "2026-10-22", "solver": "Michael Brackx", "source": "https://dbourdeau.github.io/cyphersolver/matignon1586.html", "name": "Mayenne to Henri III, on Castets, April 1586 (BnF fr. 15572 f. 143r-v; clear copy f. 155)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude (version not reported)", "role": "AI-assisted re-transcription and key correction across 15 pages and 16,677 cipher tokens; 10,616 tokens form French word runs; compared against contemporary clear copies, full independent image audit missing; known key applied", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/matignon1586.html", "number": 1146 }, { "submitted": "2026-10-22", "solver": "Michael Brackx", "source": "https://dbourdeau.github.io/cyphersolver/matignon1586.html", "name": "Forget de Fresnes to Villeroy, April 1586 (BnF fr. 15572 ff. 149v-150v; clear copy ff. 155v-156r)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude (version not reported)", "role": "AI-assisted re-transcription and key correction across 15 pages and 16,677 cipher tokens; 10,616 tokens form French word runs; compared against contemporary clear copies, full independent image audit missing; known key applied", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/matignon1586.html", "number": 1145 }, { "submitted": "2026-10-22", "solver": "Michael Brackx", "source": "https://dbourdeau.github.io/cyphersolver/matignon1586.html", "name": "Forget de Fresnes to Villeroy, after Easter 1586 (BnF fr. 15572 f. 154r-v; clear copy f. 157r)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude (version not reported)", "role": "AI-assisted re-transcription and key correction across 15 pages and 16,677 cipher tokens; 10,616 tokens form French word runs; compared against contemporary clear copies, full independent image audit missing; known key applied", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/matignon1586.html", "number": 1144 }, { "submitted": "2026-10-22", "solver": "Michael Brackx", "source": "https://dbourdeau.github.io/cyphersolver/matignon1586.html", "name": "Unknown writer to Henri III, on credit, 1586 (BnF fr. 15572 f. 173)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude (version not reported)", "role": "AI-assisted re-transcription and key correction across 15 pages and 16,677 cipher tokens; 10,616 tokens form French word runs; compared against contemporary clear copies, full independent image audit missing; known key applied", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/matignon1586.html", "number": 1143 }, { "submitted": "2026-10-22", "solver": "Michael Brackx", "source": "https://dbourdeau.github.io/cyphersolver/matignon1586.html", "name": "Mayenne's camp to Henri III, camp before Monségur, May 1586 (BnF fr. 15572 f. 196r-v)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude (version not reported)", "role": "AI-assisted re-transcription and key correction across 15 pages and 16,677 cipher tokens; 10,616 tokens form French word runs; compared against contemporary clear copies, full independent image audit missing; known key applied", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/matignon1586.html", "number": 1142 }, { "submitted": "2026-10-22", "solver": "Michael Brackx", "source": "https://dbourdeau.github.io/cyphersolver/matignon1586.html", "name": "Mayenne's camp to Henri III, before Monségur, May 1586, second encipherment of the f. 196 despatch (BnF fr. 15572 f. 201r)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude (version not reported)", "role": "AI-assisted re-transcription and key correction across 15 pages and 16,677 cipher tokens; 10,616 tokens form French word runs; compared against contemporary clear copies, full independent image audit missing; known key applied", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/matignon1586.html", "number": 1141 }, { "submitted": "2026-10-22", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1329", "name": "pc_hcp_10", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_10_report.pdf", "number": 1140 }, { "submitted": "2026-10-22", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1330", "name": "pc_hcp_11", "type": "Mirror writing", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_11_report.pdf", "number": 1139 }, { "submitted": "2026-10-22", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1341", "name": "pc_hcp_22", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_22_report.pdf", "number": 1138 }, { "submitted": "2026-10-22", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1342", "name": "pc_hcp_23", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_23_report.pdf", "number": 1137 }, { "submitted": "2026-10-22", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1344", "name": "pc_hcp_25", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_25_report.pdf", "number": 1136 }, { "submitted": "2026-10-22", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1345", "name": "pc_hcp_26", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_26_report.pdf", "number": 1135 }, { "submitted": "2026-10-22", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1686", "name": "pc_hcp_367", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/367.md#complete-working-reading--23-october-2026", "number": 1134 }, { "submitted": "2026-10-22", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1687", "name": "pc_hcp_368", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/368.md#complete-working-reading--23-october-2026", "number": 1133 }, { "submitted": "2026-10-22", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1688", "name": "pc_hcp_369", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/369.md#complete-working-reading--23-october-2026", "number": 1132 }, { "submitted": "2026-10-22", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1689", "name": "pc_hcp_370", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/370.md#complete-working-reading--23-october-2026", "number": 1131 }, { "submitted": "2026-10-22", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1690", "name": "pc_hcp_371", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "NO", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/371.md#complete-working-reading--23-october-2026", "number": 1130 }, { "submitted": "2026-10-22", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1691", "name": "pc_hcp_372", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "NO", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/372.md#complete-working-reading--23-october-2026", "number": 1129 }, { "submitted": "2026-10-22", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1692", "name": "pc_hcp_373", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "NO", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/373.md#complete-working-reading--23-october-2026", "number": 1128 }, { "submitted": "2026-10-22", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1693", "name": "pc_hcp_374", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "NO", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/374.md#complete-working-reading--23-october-2026", "number": 1127 }, { "submitted": "2026-10-22", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1694", "name": "pc_hcp_375", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "NO", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/375.md#complete-working-reading--23-october-2026", "number": 1126 }, { "submitted": "2026-10-22", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1695", "name": "pc_hcp_376", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "NO", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/376.md#complete-working-reading--23-october-2026", "number": 1125 }, { "submitted": "2026-10-22", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1696", "name": "pc_hcp_377", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "NO", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/377.md#complete-working-reading--23-october-2026", "number": 1124 }, { "submitted": "2026-10-22", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1697", "name": "pc_hcp_378", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "NO", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/378.md#complete-working-reading--23-october-2026", "number": 1123 }, { "submitted": "2026-10-22", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1698", "name": "pc_hcp_379", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "NO", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/379.md#complete-working-reading--23-october-2026", "number": 1122 }, { "submitted": "2026-10-22", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1699", "name": "pc_hcp_380", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "NO", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/380.md#complete-working-reading--23-october-2026", "number": 1121 }, { "submitted": "2026-10-22", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1700", "name": "pc_hcp_381", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "NO", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/381.md#complete-working-reading--22-october-2026", "number": 1120 }, { "submitted": "2026-10-22", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1701", "name": "pc_hcp_382", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "NO", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/382.md#complete-working-reading--22-october-2026", "number": 1119 }, { "submitted": "2026-10-22", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1702", "name": "pc_hcp_383", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "NO", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/383.md#complete-working-reading--22-october-2026", "number": 1118 }, { "submitted": "2026-10-22", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1703", "name": "pc_hcp_384", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "NO", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/384.md#complete-working-reading--22-october-2026", "number": 1117 }, { "submitted": "2026-10-22", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1704", "name": "pc_hcp_385", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "NO", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/385.md#complete-working-reading--22-october-2026", "number": 1116 }, { "submitted": "2026-10-22", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1705", "name": "pc_hcp_386", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "NO", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/386.md#complete-working-reading--22-october-2026", "number": 1115 }, { "submitted": "2026-10-22", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1323", "name": "pc_hcp_4", "type": "Transposition", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_4_report.pdf", "number": 1114 }, { "submitted": "2026-10-22", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1325", "name": "pc_hcp_6", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6 Astra; GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_6_report.pdf", "number": 1113 }, { "submitted": "2026-10-22", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1327", "name": "pc_hcp_8", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_8_report.pdf", "number": 1112 }, { "submitted": "2026-10-22", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1328", "name": "pc_hcp_9", "type": "Transposition", "model": "OpenAI GPT", "version": "GPT-6 Astra; GPT-6.1 Sol", "role": "transcription, analysis, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_9_report.pdf", "number": 1111 }, { "submitted": "2026-10-22", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1409", "name": "pc_hcp_90", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_90_report.pdf", "number": 1110 }, { "submitted": "2026-10-22", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/sabran1633.html", "name": "Louis XIII (countersigned Bouthillier), Dijon, to Melchior de Sabran, Genoa, 28 Mar 1631 (BnF Baluze 155 f. 79r-v; DECODE R2748)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported)", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sabran1633", "number": 1109 }, { "submitted": "2026-10-22", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/sabran1633.html", "name": "Melchior de Sabran, Genoa, to Bouthillier, 16 Jun 1633 (BnF fr. 4134 ff. 46v-47)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported)", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sabran1633", "number": 1108 }, { "submitted": "2026-10-22", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/sabran1633.html", "name": "Melchior de Sabran, Genoa, to Bouthillier, [23 Jun 1633] (BnF fr. 4134 f. 50v)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported)", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sabran1633", "number": 1107 }, { "submitted": "2026-10-22", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/sabran1633.html", "name": "Melchior de Sabran, Genoa, to Bouthillier, [1/2 Jul 1633] (BnF fr. 4134 f. 52)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported)", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sabran1633", "number": 1106 }, { "submitted": "2026-10-22", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/sabran1633.html", "name": "Melchior de Sabran, Genoa, to Bouthillier, [4 Jul-11 Sep 1633] (BnF fr. 4134 f. 54)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported)", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sabran1633", "number": 1105 }, { "submitted": "2026-10-22", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/sabran1633.html", "name": "Melchior de Sabran, Genoa, to Bouthillier, [Jul-Sep 1633] (BnF fr. 4134 f. 57r-v)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported)", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sabran1633", "number": 1104 }, { "submitted": "2026-10-22", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/sabran1633.html", "name": "Melchior de Sabran, Genoa, to Bouthillier, [c. 23 Sep 1633] (BnF fr. 4134 f. 66r-v)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported)", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sabran1633", "number": 1103 }, { "submitted": "2026-10-22", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/sabran1633.html", "name": "Melchior de Sabran, Genoa, to Bouthillier, [7 Oct 1633] (BnF fr. 4134 f. 69v)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported)", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sabran1633", "number": 1102 }, { "submitted": "2026-10-22", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/sabran1633.html", "name": "Melchior de Sabran, Genoa, to Bouthillier, 21 Oct 1633 (BnF fr. 4134 f. 73v)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported)", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sabran1633", "number": 1101 }, { "submitted": "2026-10-22", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/sabran1633.html", "name": "Melchior de Sabran, Genoa, to Bouthillier, 30 May 1635 (BnF fr. 4135 f. 132r-v)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported)", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sabran1633", "number": 1100 }, { "submitted": "2026-10-22", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/sabran1633.html", "name": "Melchior de Sabran, Genoa, to Bouthillier, [8 Oct 1635] (BnF fr. 4135 ff. 215v-216v)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported)", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sabran1633", "number": 1099 }, { "submitted": "2026-10-22", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/sabran1633.html", "name": "Melchior de Sabran, Genoa, to Claude Bouthillier, 18 Oct 1635 (BnF fr. 4135 ff. 218r-220r, incl. f. 218r margin)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported)", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sabran1633", "number": 1098 }, { "submitted": "2026-10-22", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/sabran1633.html", "name": "Melchior de Sabran, Genoa, to Bouthillier, 21 Oct 1635 (BnF fr. 4135 f. 224v)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported)", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sabran1633", "number": 1097 }, { "submitted": "2026-10-22", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/sabran1633.html", "name": "Melchior de Sabran, Genoa, to Bouthillier, 25 Oct or 2 Nov 1635 (BnF fr. 4135 ff. 227-229v)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported)", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sabran1633", "number": 1096 }, { "submitted": "2026-10-22", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/sabran1633.html", "name": "Melchior de Sabran, Genoa, to Bouthillier, [16 Nov 1635] (BnF fr. 4135 ff. 232r-233r)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported)", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sabran1633", "number": 1095 }, { "submitted": "2026-10-22", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/sabran1633.html", "name": "Melchior de Sabran, Genoa, to Bouthillier, [30 Nov or 4 Dec 1635], end of letter (BnF fr. 4135 f. 241r-v)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported)", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sabran1633", "number": 1094 }, { "submitted": "2026-10-22", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/sabran1633.html", "name": "Melchior de Sabran, Genoa, to Bouthillier, [4 Dec 1635?], fragments of following letter (BnF fr. 4135 ff. 241v-242v)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported)", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sabran1633", "number": 1093 }, { "submitted": "2026-10-22", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/sabran1633.html", "name": "Melchior de Sabran, Genoa, to Bouthillier, [14 Dec 1635] (BnF fr. 4135 f. 245v)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported)", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sabran1633", "number": 1092 }, { "submitted": "2026-10-22", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/sabran1633.html", "name": "Melchior de Sabran, Genoa, to Bouthillier, 18 Dec 1635 (BnF fr. 4135 ff. 251v-252r)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported)", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sabran1633", "number": 1091 }, { "submitted": "2026-10-22", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/saintluc1586.html", "name": "François d'Espinay de Saint-Luc (attributed) to Henri III or Villeroy, 30 January 1586 (BnF Français 15572 f. 43)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/saintluc1586", "number": 1090 }, { "submitted": "2026-10-21", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/army1902.html", "name": "Chief of General Staff Oyama Iwao to Lt-Gen. Terauchi Masatake, Osaka to Tokyo, 27 March 1902, no. 987 (JACAR C09122911500, frame 0110)", "type": "MASC/ Polybius(kana)", "model": "Combination", "version": "Claude Opus 5.5; Claude Sonnet (version not reported); GPT (version not reported)", "role": "Reconstructed kana code table from a telegram with adjacent plaintext and read four messages, including one previously untranslated January 1904 telegram; independent decoder and permutation tests support results; not ciphertext-only", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/army1902.html", "number": 1089 }, { "submitted": "2026-10-21", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/army1902.html", "name": "12th Division, Kokura, to Maj.-Gen. Iguchi, General Staff, Tokyo, 25 January 1904, no. 62 (JACAR C09123116600, frame 0026)", "type": "MASC/ Polybius(kana)", "model": "Combination", "version": "Claude Opus 5.5; Claude Sonnet (version not reported); GPT (version not reported)", "role": "Reconstructed kana code table from a telegram with adjacent plaintext and read four messages, including one previously untranslated January 1904 telegram; independent decoder and permutation tests support results; not ciphertext-only", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/army1902.html", "number": 1088 }, { "submitted": "2026-10-21", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/army1902.html", "name": "Oyama Iwao to Maj.-Gen. Fukushima, Osaka to Tokyo, 28 March 1902 (JACAR C09122909900, frame 0079)", "type": "MASC/ Polybius(kana)", "model": "Combination", "version": "Claude Opus 5.5; Claude Sonnet (version not reported); GPT (version not reported)", "role": "Reconstructed kana code table from a telegram with adjacent plaintext and read four messages, including one previously untranslated January 1904 telegram; independent decoder and permutation tests support results; not ciphertext-only", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/army1902.html", "number": 1087 }, { "submitted": "2026-10-21", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/army1902.html", "name": "Division commander Inoue to the Minister of War, Kokura/Moji, 18 January 1904 (JACAR C03020059400, frame 0119)", "type": "MASC/ Polybius(kana)", "model": "Combination", "version": "Claude Opus 5.5; Claude Sonnet (version not reported); GPT (version not reported)", "role": "Reconstructed kana code table from a telegram with adjacent plaintext and read four messages, including one previously untranslated January 1904 telegram; independent decoder and permutation tests support results; not ciphertext-only", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/army1902.html", "number": 1086 }, { "submitted": "2026-10-21", "solver": "Harumi-Matsuba; Brett Burford", "source": "https://dbourdeau.github.io/cyphersolver/mayenne1586c2.html", "name": "Mayenne–Forget Cipher-2, three letters of 1586", "type": "Nomenclator", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "AI-assisted decipherment with Satoshi Tomokiyo's existing key; 4,560 of 5,293 signs in French word runs; mechanical independent checks, no complete human verification of manuscript transcriptions", "agents": "Not reported", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/mayenne1586c2.html", "number": 1085 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1646", "name": "pc_hcp_327", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/327.md#complete-working-reading--28-october-2026", "number": 1084 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1647", "name": "pc_hcp_328", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/328.md#complete-working-reading--28-october-2026", "number": 1083 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1648", "name": "pc_hcp_329", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/329.md#complete-working-reading--28-october-2026", "number": 1082 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1649", "name": "pc_hcp_330", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/330.md#complete-working-reading--28-october-2026", "number": 1081 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1650", "name": "pc_hcp_331", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/331.md#complete-working-reading--27-october-2026", "number": 1080 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1651", "name": "pc_hcp_332", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/332.md#complete-working-reading--27-october-2026", "number": 1079 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1652", "name": "pc_hcp_333", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/333.md#complete-working-reading--27-october-2026", "number": 1078 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1653", "name": "pc_hcp_334", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/334.md#complete-working-reading--27-october-2026", "number": 1077 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1654", "name": "pc_hcp_335", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/335.md#complete-working-reading--27-october-2026", "number": 1076 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1655", "name": "pc_hcp_336", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/336.md#complete-working-reading--27-october-2026", "number": 1075 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1656", "name": "pc_hcp_337", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/337.md#complete-working-reading--27-october-2026", "number": 1074 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1659", "name": "pc_hcp_340", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/340.md#complete-working-reading--26-october-2026", "number": 1073 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1660", "name": "pc_hcp_341", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/341.md#complete-working-reading--26-october-2026", "number": 1072 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1661", "name": "pc_hcp_342", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/342.md#complete-working-reading--26-october-2026", "number": 1071 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1662", "name": "pc_hcp_343", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/343.md#complete-working-reading--26-october-2026", "number": 1070 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1663", "name": "pc_hcp_344", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/344.md#complete-working-reading--26-october-2026", "number": 1069 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1664", "name": "pc_hcp_345", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/345.md#complete-working-reading--26-october-2026", "number": 1068 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1665", "name": "pc_hcp_346", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/346.md#complete-working-reading--26-october-2026", "number": 1067 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1666", "name": "pc_hcp_347", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/347.md#complete-working-reading--26-october-2026", "number": 1066 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1667", "name": "pc_hcp_348", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/348.md#complete-working-reading--26-october-2026", "number": 1065 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1668", "name": "pc_hcp_349", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/349.md#complete-working-reading--26-october-2026", "number": 1064 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1669", "name": "pc_hcp_350", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/350.md#complete-working-reading--26-october-2026", "number": 1063 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1670", "name": "pc_hcp_351", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/351.md#complete-working-reading--26-october-2026", "number": 1062 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1671", "name": "pc_hcp_352", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/352.md#complete-working-reading--26-october-2026", "number": 1061 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1672", "name": "pc_hcp_353", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/353.md#complete-working-reading--26-october-2026", "number": 1060 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1673", "name": "pc_hcp_354", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/354.md#complete-working-reading--26-october-2026", "number": 1059 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1674", "name": "pc_hcp_355", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/355.md#complete-working-reading--26-october-2026", "number": 1058 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1675", "name": "pc_hcp_356", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/356.md#complete-working-reading--26-october-2026", "number": 1057 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1676", "name": "pc_hcp_357", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/357.md#complete-working-reading--24-october-2026", "number": 1056 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1677", "name": "pc_hcp_358", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/358.md#complete-working-reading--23-october-2026", "number": 1055 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1678", "name": "pc_hcp_359", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/359.md#complete-working-reading--23-october-2026", "number": 1054 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1679", "name": "pc_hcp_360", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/360.md#complete-working-reading--23-october-2026", "number": 1053 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1680", "name": "pc_hcp_361", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/361.md#complete-working-reading--23-october-2026", "number": 1052 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1681", "name": "pc_hcp_362", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/362.md#complete-working-reading--23-october-2026", "number": 1051 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1682", "name": "pc_hcp_363", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/363.md#complete-working-reading--23-october-2026", "number": 1050 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1683", "name": "pc_hcp_364", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/364.md#complete-working-reading--23-october-2026", "number": 1049 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1684", "name": "pc_hcp_365", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/365.md#complete-working-reading--23-october-2026", "number": 1048 }, { "submitted": "2026-10-21", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1685", "name": "pc_hcp_366", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/366.md#complete-working-reading--23-october-2026", "number": 1047 }, { "submitted": "2026-10-21", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/rusdorff1625.html", "name": "Johann Joachim von Rusdorff, London, to Axel Oxenstierna, 15/25 Feb 1625 (Riksarkivet, Oxenstierna af Södermöre Ser. B E 701; DECODE R4336)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only recovery of key for three Latin diplomatic letters; 436 of 438 cipher groups assigned; independently reproduced mechanically and statistically; two code values unresolved; with CTTS", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/rusdorff1625.html", "number": 1046 }, { "submitted": "2026-10-21", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/rusdorff1625.html", "name": "Johann Joachim von Rusdorff, London, to Axel Oxenstierna, 26 Feb 1625 o.s. (Riksarkivet E 701; DECODE R4337 images 1-2)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only recovery of key for three Latin diplomatic letters; 436 of 438 cipher groups assigned; independently reproduced mechanically and statistically; two code values unresolved; with CTTS", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/rusdorff1625.html", "number": 1045 }, { "submitted": "2026-10-21", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/rusdorff1625.html", "name": "Johann Joachim von Rusdorff to Axel Oxenstierna, undated further letter [1625], opening only (Riksarkivet E 701; DECODE R4337 image 3)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only recovery of key for three Latin diplomatic letters; 436 of 438 cipher groups assigned; independently reproduced mechanically and statistically; two code values unresolved; with CTTS", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/rusdorff1625.html", "number": 1044 }, { "submitted": "2026-10-21", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "name": "Scipion de Fiesque to Catherine de' Medici, Vienna, 11 October 1567 (BnF fr. 15919, views 6r–8r)", "type": "Nomenclator", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "AI transcription and application of Satoshi Tomokiyo's existing key to 44 manuscript pages; 99.7% symbol assignment, 81% letters in French word runs, 83.8% agreement against a contemporary decipherment; full human transcription audit missing", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "number": 1043 }, { "submitted": "2026-10-21", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "name": "Scipion de Fiesque to Catherine de' Medici, Vienna, 15 November 1567 (BnF fr. 15919, f. 18r–v, views 22r–23l)", "type": "Nomenclator", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "AI transcription and application of Satoshi Tomokiyo's existing key to 44 manuscript pages; 99.7% symbol assignment, 81% letters in French word runs, 83.8% agreement against a contemporary decipherment; full human transcription audit missing", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "number": 1042 }, { "submitted": "2026-10-21", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "name": "Scipion de Fiesque to Catherine de' Medici, Vienna, 21 January 1568 (BnF fr. 15919, views 34r–35l)", "type": "Nomenclator", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "AI transcription and application of Satoshi Tomokiyo's existing key to 44 manuscript pages; 99.7% symbol assignment, 81% letters in French word runs, 83.8% agreement against a contemporary decipherment; full human transcription audit missing", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "number": 1041 }, { "submitted": "2026-10-21", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "name": "Scipion de Fiesque to Charles IX, Vienna, 15 February 1568 (BnF fr. 15919, views 37r–38r)", "type": "Nomenclator", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "AI transcription and application of Satoshi Tomokiyo's existing key to 44 manuscript pages; 99.7% symbol assignment, 81% letters in French word runs, 83.8% agreement against a contemporary decipherment; full human transcription audit missing", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "number": 1040 }, { "submitted": "2026-10-21", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "name": "Scipion de Fiesque to Catherine de' Medici, Vienna, 6 March 1568 (BnF fr. 15919, f. 39r–v)", "type": "Nomenclator", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "AI transcription and application of Satoshi Tomokiyo's existing key to 44 manuscript pages; 99.7% symbol assignment, 81% letters in French word runs, 83.8% agreement against a contemporary decipherment; full human transcription audit missing", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "number": 1039 }, { "submitted": "2026-10-21", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "name": "Scipion de Fiesque to Catherine de' Medici, Vienna, 27 March 1568 (BnF fr. 15919, view 49r)", "type": "Nomenclator", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "AI transcription and application of Satoshi Tomokiyo's existing key to 44 manuscript pages; 99.7% symbol assignment, 81% letters in French word runs, 83.8% agreement against a contemporary decipherment; full human transcription audit missing", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "number": 1038 }, { "submitted": "2026-10-21", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "name": "Scipion de Fiesque to Catherine de' Medici, Vienna, 4 June 1568 (BnF fr. 15919, view 65r)", "type": "Nomenclator", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "AI transcription and application of Satoshi Tomokiyo's existing key to 44 manuscript pages; 99.7% symbol assignment, 81% letters in French word runs, 83.8% agreement against a contemporary decipherment; full human transcription audit missing", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "number": 1037 }, { "submitted": "2026-10-21", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "name": "Scipion de Fiesque to Catherine de' Medici, Vienna, 12 June 1568 (BnF fr. 15919, views 70r–71l)", "type": "Nomenclator", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "AI transcription and application of Satoshi Tomokiyo's existing key to 44 manuscript pages; 99.7% symbol assignment, 81% letters in French word runs, 83.8% agreement against a contemporary decipherment; full human transcription audit missing", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "number": 1036 }, { "submitted": "2026-10-21", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "name": "Scipion de Fiesque to Catherine de' Medici, Vienna, 17 July 1568 (BnF fr. 15919, ff. 79r–80r)", "type": "Nomenclator", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "AI transcription and application of Satoshi Tomokiyo's existing key to 44 manuscript pages; 99.7% symbol assignment, 81% letters in French word runs, 83.8% agreement against a contemporary decipherment; full human transcription audit missing", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "number": 1035 }, { "submitted": "2026-10-21", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "name": "Scipion de Fiesque to Catherine de' Medici, Vienna, 14 August 1568 (BnF fr. 15919, ff. 94r–95r)", "type": "Nomenclator", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "AI transcription and application of Satoshi Tomokiyo's existing key to 44 manuscript pages; 99.7% symbol assignment, 81% letters in French word runs, 83.8% agreement against a contemporary decipherment; full human transcription audit missing", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "number": 1034 }, { "submitted": "2026-10-21", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "name": "Scipion de Fiesque to Catherine de' Medici, Vienna, 21 August 1568 (BnF fr. 15919, view 103r)", "type": "Nomenclator", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "AI transcription and application of Satoshi Tomokiyo's existing key to 44 manuscript pages; 99.7% symbol assignment, 81% letters in French word runs, 83.8% agreement against a contemporary decipherment; full human transcription audit missing", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "number": 1033 }, { "submitted": "2026-10-21", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "name": "Scipion de Fiesque, docketed 'au Roy' (cipher addresses 'Madame'), Vienna, 4 September 1568 (BnF fr. 15919, ff. 100r–101v)", "type": "Nomenclator", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "AI transcription and application of Satoshi Tomokiyo's existing key to 44 manuscript pages; 99.7% symbol assignment, 81% letters in French word runs, 83.8% agreement against a contemporary decipherment; full human transcription audit missing", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "number": 1032 }, { "submitted": "2026-10-21", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "name": "Scipion de Fiesque to Catherine de' Medici, Vienna, 4 September 1568 (BnF fr. 15919, views 109r–110r)", "type": "Nomenclator", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "AI transcription and application of Satoshi Tomokiyo's existing key to 44 manuscript pages; 99.7% symbol assignment, 81% letters in French word runs, 83.8% agreement against a contemporary decipherment; full human transcription audit missing", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "number": 1031 }, { "submitted": "2026-10-21", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "name": "Scipion de Fiesque to Catherine de' Medici, Vienna, 6 November 1568 (BnF fr. 15919, view 125r)", "type": "Nomenclator", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "AI transcription and application of Satoshi Tomokiyo's existing key to 44 manuscript pages; 99.7% symbol assignment, 81% letters in French word runs, 83.8% agreement against a contemporary decipherment; full human transcription audit missing", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "number": 1030 }, { "submitted": "2026-10-21", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "name": "Scipion de Fiesque to Catherine de' Medici, Speyer, 2 December 1568 (BnF fr. 15919, views 129r–130l)", "type": "Nomenclator", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "AI transcription and application of Satoshi Tomokiyo's existing key to 44 manuscript pages; 99.7% symbol assignment, 81% letters in French word runs, 83.8% agreement against a contemporary decipherment; full human transcription audit missing", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "number": 1029 }, { "submitted": "2026-10-21", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "name": "Scipion de Fiesque to Catherine de' Medici, Vienna, 14 January 1569 (BnF fr. 15919, views 140r–141l)", "type": "Nomenclator", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "AI transcription and application of Satoshi Tomokiyo's existing key to 44 manuscript pages; 99.7% symbol assignment, 81% letters in French word runs, 83.8% agreement against a contemporary decipherment; full human transcription audit missing", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "number": 1028 }, { "submitted": "2026-10-21", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "name": "Scipion de Fiesque to Catherine de' Medici, Vienna, 2 March 1569 (BnF fr. 15919, view 146r)", "type": "Nomenclator", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "AI transcription and application of Satoshi Tomokiyo's existing key to 44 manuscript pages; 99.7% symbol assignment, 81% letters in French word runs, 83.8% agreement against a contemporary decipherment; full human transcription audit missing", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "number": 1027 }, { "submitted": "2026-10-21", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "name": "Scipion de Fiesque to Catherine de' Medici, Vienna, 1 October 1569 (date conjectural) (BnF fr. 15919, view 155r)", "type": "Nomenclator", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "AI transcription and application of Satoshi Tomokiyo's existing key to 44 manuscript pages; 99.7% symbol assignment, 81% letters in French word runs, 83.8% agreement against a contemporary decipherment; full human transcription audit missing", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "number": 1026 }, { "submitted": "2026-10-21", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "name": "Scipion de Fiesque to Catherine de' Medici, Vienna, 15 October 1569 (date conjectural) (BnF fr. 15919, view 161r)", "type": "Nomenclator", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "AI transcription and application of Satoshi Tomokiyo's existing key to 44 manuscript pages; 99.7% symbol assignment, 81% letters in French word runs, 83.8% agreement against a contemporary decipherment; full human transcription audit missing", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "number": 1025 }, { "submitted": "2026-10-21", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "name": "Scipion de Fiesque to Charles IX, Vienna, 20 October 1569 (BnF fr. 15919, view 159r)", "type": "Nomenclator", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "AI transcription and application of Satoshi Tomokiyo's existing key to 44 manuscript pages; 99.7% symbol assignment, 81% letters in French word runs, 83.8% agreement against a contemporary decipherment; full human transcription audit missing", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "number": 1024 }, { "submitted": "2026-10-21", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "name": "Scipion de Fiesque to Charles IX, Vienna, 29 October 1569 (BnF fr. 15919, f. 158r)", "type": "Nomenclator", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "AI transcription and application of Satoshi Tomokiyo's existing key to 44 manuscript pages; 99.7% symbol assignment, 81% letters in French word runs, 83.8% agreement against a contemporary decipherment; full human transcription audit missing", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "number": 1023 }, { "submitted": "2026-10-21", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "name": "Scipion de Fiesque to Catherine de' Medici, Vienna, 4 November 1569 (BnF fr. 15919, view 168r)", "type": "Nomenclator", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "AI transcription and application of Satoshi Tomokiyo's existing key to 44 manuscript pages; 99.7% symbol assignment, 81% letters in French word runs, 83.8% agreement against a contemporary decipherment; full human transcription audit missing", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/fiesque1567.html", "number": 1022 }, { "submitted": "2026-10-21", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/ancel1577.html", "name": "Guillaume Ancel, Vienna → 'Monseigneur' in France, 22 Oct 1577 (BnF Cinq Cents de Colbert 398 pp. 524–526)", "type": "Homophonic substitution", "model": "Combination", "version": "Claude Opus 5.5; Claude Sonnet 5.5; GPT (version not reported)", "role": "key transfer: external key matched and applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/ancel1577", "number": 1021 }, { "submitted": "2026-10-21", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/ancel1577.html", "name": "Guillaume Ancel, Vienna → 'Monseigneur' in France, 2 Nov 1577 (BnF Cinq Cents de Colbert 398 p. 539)", "type": "Homophonic substitution", "model": "Combination", "version": "Claude Opus 5.5; Claude Sonnet 5.5; GPT (version not reported)", "role": "key transfer: external key matched and applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/ancel1577", "number": 1020 }, { "submitted": "2026-10-21", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/ancel1577.html", "name": "Guillaume Ancel, Vienna → 'Monseigneur' in France, 14 Dec 1577 (BnF Cinq Cents de Colbert 398 pp. 561–563)", "type": "Homophonic substitution", "model": "Combination", "version": "Claude Opus 5.5; Claude Sonnet 5.5; GPT (version not reported)", "role": "key transfer: external key matched and applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/ancel1577", "number": 1019 }, { "submitted": "2026-10-21", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/ancel1577.html", "name": "Guillaume Ancel, Vienna → 'Monseigneur' in France, 21 Dec 1577 (BnF Cinq Cents de Colbert 398 p. 565)", "type": "Homophonic substitution", "model": "Combination", "version": "Claude Opus 5.5; Claude Sonnet 5.5; GPT (version not reported)", "role": "key transfer: external key matched and applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/ancel1577", "number": 1018 }, { "submitted": "2026-10-21", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/bilia1527.html", "name": "Giovanni Antonio Bilia to Francesco II Sforza, Duke of Milan, Burgos, 22 November 1527 (BnF fr. 3013 no. 43, ff. 102r-v)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; Claude Sonnet (version not reported); GPT (version not reported)", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/bilia1527", "number": 1017 }, { "submitted": "2026-10-21", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/letellier1644.html", "name": "Michel Le Tellier to Pierre de Marca, Paris, 26 Apr 1644 (BnF Baluze 103 f. 50r-v; DECODE R2742)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported)", "role": "key transfer: external key matched and applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/letellier1644", "number": 1016 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "name": "Huang Xing, Tokyo to Shanghai group, 10 June 1916, 共密 (JACAR; N17)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only reconstruction of three numeric keys; 1,940 of 2,100 groups read confidently; independent decoder reproduces all groups, with incomplete blind manuscript verification", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "number": 1015 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "name": "Huang Xing circle, Tokyo to Shanghai, 11 June 1916, 共密 (JACAR; N18)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only reconstruction of three numeric keys; 1,940 of 2,100 groups read confidently; independent decoder reproduces all groups, with incomplete blind manuscript verification", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "number": 1014 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "name": "Shanghai group to Huang Xing, Tokyo, 13 June 1916, 共密 (JACAR; N23)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only reconstruction of three numeric keys; 1,940 of 2,100 groups read confidently; independent decoder reproduces all groups, with incomplete blind manuscript verification", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "number": 1013 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "name": "Huang Xing circle, Tokyo to Shanghai, 15 June 1916, 共密 (JACAR; N27)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only reconstruction of three numeric keys; 1,940 of 2,100 groups read confidently; independent decoder reproduces all groups, with incomplete blind manuscript verification", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "number": 1012 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "name": "Huang Xing circle, Tokyo to Shanghai, 15 June 1916, 共密 (JACAR; N30)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only reconstruction of three numeric keys; 1,940 of 2,100 groups read confidently; independent decoder reproduces all groups, with incomplete blind manuscript verification", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "number": 1011 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "name": "Shanghai group to Huang Xing, Tokyo, 14 June 1916, 共密 (JACAR; N32)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only reconstruction of three numeric keys; 1,940 of 2,100 groups read confidently; independent decoder reproduces all groups, with incomplete blind manuscript verification", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "number": 1010 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "name": "Shanghai group to Huang Xing, Tokyo, 15 June 1916, 共密 (JACAR; N33)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only reconstruction of three numeric keys; 1,940 of 2,100 groups read confidently; independent decoder reproduces all groups, with incomplete blind manuscript verification", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "number": 1009 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "name": "Huang Xing circle, Tokyo to Shanghai, 16 June 1916, 共密 (JACAR; N35)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only reconstruction of three numeric keys; 1,940 of 2,100 groups read confidently; independent decoder reproduces all groups, with incomplete blind manuscript verification", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "number": 1008 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "name": "Shanghai group to Tokyo, 2 July 1916, 共密 (JACAR B03050090000; V4E)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only reconstruction of three numeric keys; 1,940 of 2,100 groups read confidently; independent decoder reproduces all groups, with incomplete blind manuscript verification", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "number": 1007 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "name": "Zhang Xiaozhun/Huang Xing, Tokyo to Shanghai, June 1916, 容密 (JACAR; N02)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only reconstruction of three numeric keys; 1,940 of 2,100 groups read confidently; independent decoder reproduces all groups, with incomplete blind manuscript verification", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "number": 1006 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "name": "Huang Xing circle, Tokyo to Shanghai, June 1916, 容密 (JACAR; N08)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only reconstruction of three numeric keys; 1,940 of 2,100 groups read confidently; independent decoder reproduces all groups, with incomplete blind manuscript verification", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "number": 1005 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "name": "Huang Xing circle, Tokyo to Shanghai, 8 June 1916, 容密 (JACAR; N11)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only reconstruction of three numeric keys; 1,940 of 2,100 groups read confidently; independent decoder reproduces all groups, with incomplete blind manuscript verification", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "number": 1004 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "name": "Zhang Xiaozhun, Tokyo to Shanghai, 8 June 1916, 容密 (JACAR; N12)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only reconstruction of three numeric keys; 1,940 of 2,100 groups read confidently; independent decoder reproduces all groups, with incomplete blind manuscript verification", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "number": 1003 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "name": "Huang Xing, Tokyo to Governor Lü Gongwang via Shanghai, 9 June 1916, 容密 (JACAR; N14)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only reconstruction of three numeric keys; 1,940 of 2,100 groups read confidently; independent decoder reproduces all groups, with incomplete blind manuscript verification", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "number": 1002 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "name": "Huang Xing circle, Tokyo to Shanghai, June 1916, 容密 (JACAR; N19a)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only reconstruction of three numeric keys; 1,940 of 2,100 groups read confidently; independent decoder reproduces all groups, with incomplete blind manuscript verification", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "number": 1001 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "name": "Huang Xing, Tokyo to Shanghai, 11 June 1916, 容密 (JACAR; N19b)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only reconstruction of three numeric keys; 1,940 of 2,100 groups read confidently; independent decoder reproduces all groups, with incomplete blind manuscript verification", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "number": 1000 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "name": "Shanghai (relaying Lü Gongwang) to Huang Xing circle, Tokyo, 13 June 1916, 容密 (JACAR; N21)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only reconstruction of three numeric keys; 1,940 of 2,100 groups read confidently; independent decoder reproduces all groups, with incomplete blind manuscript verification", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "number": 999 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "name": "Yin Ruli, Ge Jing'en and Huang Fu, Shanghai to Huang Xing, Tokyo, June 1916, 容密 (JACAR; N24)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only reconstruction of three numeric keys; 1,940 of 2,100 groups read confidently; independent decoder reproduces all groups, with incomplete blind manuscript verification", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "number": 998 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "name": "Shanghai to Tokyo, June 1916, 容密 (JACAR; N25)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only reconstruction of three numeric keys; 1,940 of 2,100 groups read confidently; independent decoder reproduces all groups, with incomplete blind manuscript verification", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "number": 997 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "name": "Huang Xing circle, Tokyo to Shanghai, 14 June 1916, 容密 (JACAR; N28)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only reconstruction of three numeric keys; 1,940 of 2,100 groups read confidently; independent decoder reproduces all groups, with incomplete blind manuscript verification", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "number": 996 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "name": "Shanghai to Huang Xing, Tokyo, 16 June 1916, 容密 (JACAR; N36)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only reconstruction of three numeric keys; 1,940 of 2,100 groups read confidently; independent decoder reproduces all groups, with incomplete blind manuscript verification", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "number": 995 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "name": "Shanghai to Tokyo, 25 June 1916, 容密, 22 sheets (JACAR B03050089900; V4B)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only reconstruction of three numeric keys; 1,940 of 2,100 groups read confidently; independent decoder reproduces all groups, with incomplete blind manuscript verification", "agents": "Not reported", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "number": 994 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "name": "Shanghai to Tokyo, late June 1916, 容密 (JACAR B03050089900; V4D)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only reconstruction of three numeric keys; 1,940 of 2,100 groups read confidently; independent decoder reproduces all groups, with incomplete blind manuscript verification", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "number": 993 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/numeric1916.html", "name": "Huang Xing circle, Tokyo to Hunanese group, Shanghai, 3 June 1916, 辰密 (no prefix) (JACAR; N05)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5.5", 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"transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/312.md", "number": 924 }, { "submitted": "2026-10-20", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1632", "name": "pc_hcp_313", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/313.md", "number": 923 }, { "submitted": "2026-10-20", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1633", "name": "pc_hcp_314", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/314.md", "number": 922 }, { "submitted": "2026-10-20", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1634", "name": "pc_hcp_315", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/315.md", "number": 921 }, { "submitted": "2026-10-20", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1635", "name": "pc_hcp_316", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/316.md", "number": 920 }, { "submitted": "2026-10-20", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1636", "name": "pc_hcp_317", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/317.md", "number": 919 }, { "submitted": "2026-10-20", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1637", "name": "pc_hcp_318", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/318.md", "number": 918 }, { "submitted": "2026-10-20", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1638", "name": "pc_hcp_319", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/319.md", "number": 917 }, { "submitted": "2026-10-20", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1639", "name": "pc_hcp_320", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/320.md#complete-working-reading--28-october-2026", "number": 916 }, { "submitted": "2026-10-20", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1640", "name": "pc_hcp_321", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/321.md#complete-working-reading--28-october-2026", "number": 915 }, { "submitted": "2026-10-20", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1641", "name": "pc_hcp_322", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/322.md#complete-working-reading--28-october-2026", "number": 914 }, { "submitted": "2026-10-20", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1642", "name": "pc_hcp_323", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/323.md#complete-working-reading--28-october-2026", "number": 913 }, { "submitted": "2026-10-20", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1643", "name": "pc_hcp_324", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/324.md#complete-working-reading--28-october-2026", "number": 912 }, { "submitted": "2026-10-20", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1644", "name": "pc_hcp_325", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/325.md#complete-working-reading--28-october-2026", "number": 911 }, { "submitted": "2026-10-20", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1645", "name": "pc_hcp_326", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, comparison, Czech restoration, translation, curation", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/research-updates/2026-10-20-confirmed-key-continuation/cards/326.md#complete-working-reading--28-october-2026", "number": 910 }, { "submitted": "2026-10-20", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/nino1522.html", "name": "Rodrigo Niño to Charles V, 19 March 1522, DECODE R1182", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6.1 Sol", "role": "Reconstructed key and deciphered eight lines; 255 of 257 non-null occurrences assigned; reproducible decoder; related earlier work by Olga Kolosova in 2017 means worldwide first decipherment is not claimed; with CTTS", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/nino1522.html", "number": 909 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/rosamonde1915.html", "name": "Sun Yat-sen (Tokyo) to Soong Ching-ling ('Laisaosang'), Shanghai, 17 Feb 1915 (JACAR B03050087600)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only recovery of reciprocal substitution key and partial decipherment of 22 telegrams; three telegrams independently checked against archival scans; some words remain unresolved", "agents": "Not reported", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/rosamonde1915.html", "number": 908 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/rosamonde1915.html", "name": "Sun Yat-sen (Tokyo, signed Hata) to 'Rosamonde', 628 E. Yuhang Road, Shanghai, 20 Feb 1915 (JACAR B03050087600 image 45)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only recovery of reciprocal substitution key and partial decipherment of 22 telegrams; three telegrams independently checked against archival scans; some words remain unresolved", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/rosamonde1915.html", "number": 907 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/rosamonde1915.html", "name": "Sun Yat-sen (Tokyo) to Soong Ching-ling ('Laisaosang'), Shanghai, 21 Feb 1915 (JACAR B03050087600)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only recovery of reciprocal substitution key and partial decipherment of 22 telegrams; three telegrams independently checked against archival scans; some words remain unresolved", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/rosamonde1915.html", "number": 906 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/rosamonde1915.html", "name": "Sun Yat-sen (Tokyo) to Soong Ching-ling ('Laisaosang'), Shanghai, 23 Feb 1915 (JACAR B03050087600)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only recovery of reciprocal substitution key and partial decipherment of 22 telegrams; three telegrams independently checked against archival scans; some words remain unresolved", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/rosamonde1915.html", "number": 905 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/rosamonde1915.html", "name": "Sun Yat-sen (Tokyo) to Soong Ching-ling ('Laisaosang'), Shanghai, 25 Feb 1915 (JACAR B03050087600)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only recovery of reciprocal substitution key and partial decipherment of 22 telegrams; three telegrams independently checked against archival scans; some words remain unresolved", "agents": "Not reported", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/rosamonde1915.html", "number": 904 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/rosamonde1915.html", "name": "Sun Yat-sen (Tokyo) to Soong Ching-ling ('Laisaosang'), Shanghai, 26 Feb 1915 (JACAR B03050087600 image 52)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only recovery of reciprocal substitution key and partial decipherment of 22 telegrams; three telegrams independently checked against archival scans; some words remain unresolved", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/rosamonde1915.html", "number": 903 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/rosamonde1915.html", "name": "Sun Yat-sen (Tokyo) to Soong Ching-ling ('Laisaosang'), Shanghai, 3 Mar 1915 (JACAR B03050087600)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only recovery of reciprocal substitution key and partial decipherment of 22 telegrams; three telegrams independently checked against archival scans; some words remain unresolved", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/rosamonde1915.html", "number": 902 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/rosamonde1915.html", "name": "Sun Yat-sen (Tokyo) to Soong Ching-ling ('Laisaosang'), Shanghai, 6 Mar 1915 (JACAR B03050087600)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only recovery of reciprocal substitution key and partial decipherment of 22 telegrams; three telegrams independently checked against archival scans; some words remain unresolved", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/rosamonde1915.html", "number": 901 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/rosamonde1915.html", "name": "Sun Yat-sen (Tokyo) to Soong Ching-ling ('Laisaosang'), Shanghai, 7 Mar 1915 (JACAR B03050087600)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only recovery of reciprocal substitution key and partial decipherment of 22 telegrams; three telegrams independently checked against archival scans; some words remain unresolved", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/rosamonde1915.html", "number": 900 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/rosamonde1915.html", "name": "Sun Yat-sen (Tokyo) to Soong Ching-ling ('Laisaosang'), Shanghai, 9 Mar 1915 (JACAR B03050087600)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only recovery of reciprocal substitution key and partial decipherment of 22 telegrams; three telegrams independently checked against archival scans; some words remain unresolved", "agents": "Not reported", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/rosamonde1915.html", "number": 899 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/rosamonde1915.html", "name": "Sun Yat-sen (Tokyo) to Soong Ching-ling ('Laisaosang'), Shanghai, 11 Mar 1915 (JACAR B03050087600)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only recovery of reciprocal substitution key and partial decipherment of 22 telegrams; three telegrams independently checked against archival scans; some words remain unresolved", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/rosamonde1915.html", "number": 898 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/rosamonde1915.html", "name": "Sun Yat-sen (Tokyo) to Soong Ching-ling ('Laisaosang'), Shanghai, 12 Mar 1915 (JACAR B03050087700)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only recovery of reciprocal substitution key and partial decipherment of 22 telegrams; three telegrams independently checked against archival scans; some words remain unresolved", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/rosamonde1915.html", "number": 897 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/rosamonde1915.html", "name": "Sun Yat-sen (Tokyo) to 'Miss Nit', steamer Korea (wireless), 15 Mar 1915 (JACAR B03050087700)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only recovery of reciprocal substitution key and partial decipherment of 22 telegrams; three telegrams independently checked against archival scans; some words remain unresolved", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/rosamonde1915.html", "number": 896 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/rosamonde1915.html", "name": "Sun Yat-sen (Tokyo) to Soong Ching-ling ('Laisaosang'), Shanghai, 10 Jun 1915 (JACAR B03050087700)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only recovery of reciprocal substitution key and partial decipherment of 22 telegrams; three telegrams independently checked against archival scans; some words remain unresolved", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/rosamonde1915.html", "number": 895 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/rosamonde1915.html", "name": "Soong Ching-ling (probable), Shanghai, to 'Rosamonde', Tokyo, 7 Jul 1915 (JACAR B03050087700 image 50)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Ciphertext-only recovery of reciprocal substitution key and partial decipherment of 22 telegrams; three telegrams independently checked against archival scans; some words remain unresolved", "agents": "Not reported", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/rosamonde1915.html", "number": 894 }, { "submitted": "2026-10-20", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/bagno1652.html", "name": "Niccolò Guidi di Bagno to the Secretariat of State, Paris, 5 January 1652 (AAV Segr. Stato Francia 104, cipher ff. 6r–7v; DECODE R5622)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/bagno1652", "number": 893 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/breves1610.html", "name": "Marie de Médicis to Savary de Brèves, Paris → Rome, 15 September 1610 (BnF fr. 3789 f. 17r; DECODE R2075)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported)", "role": "key transfer: external key matched and applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/breves1610", "number": 892 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/breves1610.html", "name": "Marie de Médicis to Savary de Brèves, Paris → Rome, 10 November 1610 (BnF fr. 3789 f. 19r; DECODE R2076)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported)", "role": "key transfer: external key matched and applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/breves1610", "number": 891 }, { "submitted": "2026-10-20", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/breves1610.html", "name": "Unidentified letter in the Henri IV–Brèves key, possibly Henri IV to Brèves, undated (images b1–b2, shelfmark not established)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported)", "role": "key transfer: external key matched and applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/breves1610", "number": 890 }, { "submitted": "2026-10-20", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/it1583.html", "name": "Unidentified writer → Zorzo (Giorgio) del Maino, reply, 4 May 1446 (BnF italien 1583 f. 68; DECODE R7898)", "type": "Homophonic substitution", "model": "Combination", "version": "Claude Fable 5.1; GPT-6 Astra", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/it1583", "number": 889 }, { "submitted": "2026-10-19", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1098", "name": "cpc_1909-03-25_USA_Brattlebord_USA_Bernardston, Massachusets_", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6", "role": "manual transcription, analysis and decipherment; independent review by Claude Opus 5.5", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1098", "number": 888 }, { "submitted": "2026-10-19", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/409", "name": "MZV message No. 80262/1944", "type": "Kryha", "model": "OpenAI GPT", "version": "GPT-6", "role": "manual transcription, decipherment by transfer of the previously recovered Madrid key, verification; independent review by Claude Opus 5.5; four required source corrections incorporated", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-409", "number": 887 }, { "submitted": "2026-10-19", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1779", "name": "pc_hcp_460", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_460_report.pdf", "number": 886 }, { "submitted": "2026-10-19", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1780", "name": "pc_hcp_461", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_461_report.pdf", "number": 885 }, { "submitted": "2026-10-19", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1781", "name": "pc_hcp_462", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_462_report.pdf", "number": 884 }, { "submitted": "2026-10-19", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1782", "name": "pc_hcp_463", "type": "MASC/Morse", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_463_report.pdf", "number": 883 }, { "submitted": "2026-10-19", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1783", "name": "pc_hcp_464", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, analysis, key reconstruction, decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_464_report.pdf", "number": 882 }, { "submitted": "2026-10-18", "solver": "George Lasry", "source": "https://de-crypt.org/", "name": "Riksarkivet DECODE R4306: Dutch diplomatic report, probably 17th century", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported)", "role": "ciphertext-only recovery after CTTS transcription; Claude Opus 5.5 reconstructed the numerical substitution while Codex checked the inventory and a mechanical five-line excerpt; 422 of 427 non-null occurrences are assigned, with four nomenclator codes and historical attribution unresolved", "agents": "YES", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/sweden4306.html", "number": 881 }, { "submitted": "2026-10-18", "solver": "George Lasry", "source": "https://de-crypt.org/", "name": "Captain in the King's pay (prob. Muzio Attendolo Sforza) to King Ladislaus of Naples, Perugia, 30 Mar [1413] (ASSi Concistoro 2308 fasc. 2 no. 20; DECODE R4808)", "type": "Nomenclator", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "ciphertext-only recovery from 4,254 cipher elements after CTTS transcription; GPT-6 Astra recovered the working key without an interlinear decipherment or matching archive key; Codex prepared the contribution and checked a five-line mechanical excerpt; assignment coverage about 98.94%, with names and reference signs still open", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/siena2023.html", "number": 880 }, { "submitted": "2026-10-18", "solver": "George Lasry", "source": "https://de-crypt.org/", "name": "King Ladislaus's chancery, memorandum for Iacobo Spinello going to the Marche, [mid-Apr 1413] (ASSi Concistoro 2308 fasc. 2 no. 23; DECODE R4811)", "type": "Nomenclator", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "ciphertext-only recovery from 4,254 cipher elements after CTTS transcription; GPT-6 Astra recovered the working key without an interlinear decipherment or matching archive key; Codex prepared the contribution and checked a five-line mechanical excerpt; assignment coverage about 98.94%, with names and reference signs still open", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/siena2023.html", "number": 879 }, { "submitted": "2026-10-18", "solver": "George Lasry", "source": "https://de-crypt.org/", "name": "King Ladislaus's chancery, memorandum for Francesco Gattola of Naples going to Tartaglia, [mid-Apr 1413] (ASSi Concistoro 2308 fasc. 2 no. 23; DECODE R4811)", "type": "Nomenclator", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "ciphertext-only recovery from 4,254 cipher elements after CTTS transcription; GPT-6 Astra recovered the working key without an interlinear decipherment or matching archive key; Codex prepared the contribution and checked a five-line mechanical excerpt; assignment coverage about 98.94%, with names and reference signs still open", "agents": "YES", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/siena2023.html", "number": 878 }, { "submitted": "2026-10-18", "solver": "Angus Robinson", "source": "https://dbourdeau.github.io/cyphersolver/seure1558.html", "name": "Michel de Seure to de Fresne, Lisbon, 12 Dec 1558 (BnF fr. 3151 no. 39)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/seure1558", "number": 877 }, { "submitted": "2026-10-18", "solver": "Angus Robinson", "source": "https://dbourdeau.github.io/cyphersolver/seure1558.html", "name": "Michel de Seure to Henri II, Lisbon, 27 Dec 1558 (BnF fr. 3151 no. 40)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/seure1558", "number": 876 }, { "submitted": "2026-10-18", "solver": "Angus Robinson", "source": "https://dbourdeau.github.io/cyphersolver/seure1558.html", "name": "Michel de Seure to Henri II, Lisbon, 12 Dec 1558, first copy (BnF fr. 3151 no. 41)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/seure1558", "number": 875 }, { "submitted": "2026-10-18", "solver": "Angus Robinson", "source": "https://dbourdeau.github.io/cyphersolver/seure1558.html", "name": "Michel de Seure to Henri II, Lisbon, 12 Dec 1558, second copy (BnF fr. 3151 no. 43)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/seure1558", "number": 874 }, { "submitted": "2026-10-18", "solver": "Angus Robinson", "source": "https://dbourdeau.github.io/cyphersolver/seure1558.html", "name": "Michel de Seure to Henri II, Lisbon, 12 Dec 1558, 'Dupplicata' (BnF fr. 3151 no. 44)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/seure1558", "number": 873 }, { "submitted": "2026-10-18", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/siena11.html", "name": "Donato Acciaiuoli to Lorenzo de' Medici, Rome, 13 June 1478 (ASSi Concistoro 2308 fasc. 2 no. 11; DECODE R4800)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude (version not reported)", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/siena11", "number": 872 }, { "submitted": "2026-10-18", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/siena12.html", "name": "[Bishop of Fermo?] to Sforza Attendolo, Naples, 10 March 1413 (ASSi Concistoro 2308 fasc. 2 no. 12; DECODE R4790)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude (version not reported)", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/siena12", "number": 871 }, { "submitted": "2026-10-18", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/siena13.html", "name": "Unknown writer to V. S. Ill.ma, on the Pope and Bologna, c. 1527-1529 (ASSi Concistoro 2308 fasc. 2 no. 13; DECODE R4801)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Fable 5.1", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/siena13", "number": 870 }, { "submitted": "2026-10-18", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/siena17.html", "name": "Bartolomeo Tantucci to Antonio del Vescovo, Sarteano(?), 25 (or 20) Aug 1528 (ASSi Concistoro 2308 fasc. 2 no. 17; DECODE R4805)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude (version not reported)", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/siena17", "number": 869 }, { "submitted": "2026-10-18", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/siena5.html", "name": "Unknown writer to a Signoria (presumably Siena), slip on artillery, 16th century (ASSi Concistoro 2308 fasc. 2, unnumbered; DECODE R4794)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude (version not reported)", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/siena5", "number": 868 }, { "submitted": "2026-10-18", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/siena9.html", "name": "Unknown writer to 'V. S.', slip on Castiglione this winter, undated, 1440s-1450s? (ASSi Concistoro 2308 fasc. 2 no. 9; DECODE R4798)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude (version not reported)", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/siena9", "number": 867 }, { "submitted": "2026-10-14", "solver": "George Lasry", "source": "https://de-crypt.org/", "name": "Cristofano to the Signori of Siena, c.1431–1438, DECODE R4795 and R4812", "type": "Nomenclator", "model": "Combination", "version": "Claude (version not reported); GPT-6 Astra", "role": "ciphertext-only key recovery followed by discovery of the matching historical key sheet DECODE R4755; independent pre-existing transcription reproduced the reading at about 88–91% after glyph-label alignment; no.6 now reads about 95.4% as sense", "agents": "Not reported", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/siena1431.html", "number": 866 }, { "submitted": "2026-10-14", "solver": "George Lasry", "source": "https://de-crypt.org/", "name": "Riksarkivet DECODE R4282: Latin diplomatic letter, 17th century", "type": "Nomenclator", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "CTTS recovered the ciphertext-derived homophonic key; GPT-6 Astra then checked the manuscript and improved and finalized the key and decryption; 800 of 805 non-null occurrences are mapped, with three word signs unresolved", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/decode4282.html", "number": 865 }, { "submitted": "2026-10-13", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1218", "name": "cpc_1912-09-_HU__HU_Jasz Arokszalas_jolanka-106", "type": "MASC + Steganography", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "key transfer, transcription, analysis, decipherment (GPT-6 Astra); reading of the final unresolved clause and independent review by Claude Opus 5.5", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1218", "number": 864 }, { "submitted": "2026-10-13", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1217", "name": "cpc_1912-10-02_HU__HU_Jasz Arokszalas_jolanka-31", "type": "MASC + Steganography", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "key transfer, transcription, analysis, decipherment (GPT-6 Astra); independent review by Claude Opus 5.5", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1217", "number": 863 }, { "submitted": "2026-10-13", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1213", "name": "cpc_1913--_HU__HU_Jasz Arokszalas_jolanka-108", "type": "MASC + Steganography", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "key transfer, transcription, analysis, decipherment (GPT-6 Astra); independent review by Claude Opus 5.5", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1213", "number": 862 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/berny1607.html", "name": "Brulart de Berny to Pierre Jeannin, Brussels, 26 July 1607 (BnF Français 3516, f. 132r)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/berny1607", "number": 861 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/bertelot.html", "name": "Unknown to Bertelot, undated (BnF Français 3822, ff. 132r-134v)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/bertelot", "number": 860 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/bethune1629.html", "name": "Louis XIII to Philippe de Béthune, 30 June 1629 (BnF Français 3675, f. 53r-v)", "type": "Not reported", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/bethune1629", "number": 859 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/bianchi.html", "name": "Antonio Bianchi to Signor Castrino, Venice, 3 February 1610, letter XXIII (BnF Italien 2061, ff. 72v-73r)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/bianchi", "number": 858 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/bianchi.html", "name": "Piero Lusco to Signor Castrino, Ferrara, 3 August 1610, letter XXXI (BnF Italien 2061, ff. 95v-96r, 97v)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/bianchi", "number": 857 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/bianchi.html", "name": "Piero Lusco (?) to Signor Castrino, undated (after 3 August 1610), letter XXXII, opening (BnF Italien 2061, ff. 97v-98r)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/bianchi", "number": 856 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/birago1571.html", "name": "Lodovico Birago to the Duke of Nevers, Saluzzo, 5 April 1571 (BnF fr. 3252, ff. 36r-37r)", "type": "Homophonic substitution", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key transfer: external key matched and applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/birago1571", "number": 855 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/blasco1597.html", "name": "Juan Blasco de Aragón to unidentified recipient (V. E.), Madrid, 28 Apr–2 May 1597 (BnF Français 23054 ff. 71–72)", "type": "MASC", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/blasco1597", "number": 854 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/bossuet.html", "name": "Bossuet correspondence, cipher letter fragments at PDF 195–196, 1697 (BnF NAF 28227(9))", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/bossuet", "number": 853 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/bossuet.html", "name": "J.-B. Bossuet to the abbé Bossuet, Fontainebleau, 14 Oct 1697 (BnF NAF 28227(9), PDF 198–200; Correspondance VII no. 1575)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/bossuet", "number": 852 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/bossuet.html", "name": "J.-B. Bossuet to the abbé Bossuet, undated, Oct 1697 (BnF NAF 28227(9), PDF 202–206)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/bossuet", "number": 851 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/bossuet.html", "name": "J.-B. Bossuet to the abbé Bossuet, Germigny, 27 Oct 1697 (BnF NAF 28227(9), PDF 207–209)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/bossuet", "number": 850 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/bossuet.html", "name": "J.-B. Bossuet to the abbé Bossuet, undated, 1697–98 (BnF NAF 28227(9), PDF 231–234)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/bossuet", "number": 849 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/bossuet.html", "name": "Bossuet correspondence, cipher fragments at PDF 250–252, 1697–98 (BnF NAF 28227(9))", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/bossuet", "number": 848 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/bossuet.html", "name": "J.-B. Bossuet to the abbé Bossuet, undated, 1697–98 (BnF NAF 28227(9), PDF 258)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/bossuet", "number": 847 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/bossuet.html", "name": "J.-B. Bossuet to the abbé Bossuet, undated, 1697–98 (BnF NAF 28227(9), PDF 262)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/bossuet", "number": 846 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/bossuet.html", "name": "J.-B. Bossuet to the abbé Bossuet, undated, 1697–98 (BnF NAF 28227(9), PDF 267)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/bossuet", "number": 845 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/bossuet.html", "name": "J.-B. Bossuet to the abbé Bossuet, undated, 1698 (BnF NAF 28227(9), PDF 282)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/bossuet", "number": 844 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/bossuet.html", "name": "J.-B. Bossuet to the abbé Bossuet, undated, 1698 (BnF NAF 28227(9), PDF 290)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/bossuet", "number": 843 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/bouillon1650.html", "name": "Unknown sender to Duke of Bouillon, Madrid, 6–8 August 1650 (BnF Clairambault 460, pp. 53–55)", "type": "Homophonic substitution", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/bouillon1650", "number": 842 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/brienne1067.html", "name": "Brienne to Marie Louise Gonzaga, Queen of Poland, Compiègne, 19 May 1646 (BnF Clairambault 1067, ff. 226–228)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/brienne1067", "number": 841 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/brienne5160.html", "name": "Loménie de Brienne to Servien, Paris, 10 January 1653, letter A (BnF fr. 5160, ff. 1r–3r)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/brienne5160", "number": 840 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/brienne5160.html", "name": "Loménie de Brienne to Servien, undated 1653, letter B (BnF fr. 5160, ff. 9r–v)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/brienne5160", "number": 839 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/brienne5160.html", "name": "Loménie de Brienne to Servien, Paris, 1 August 1653, letter C (BnF fr. 5160, ff. 18r–21r)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/brienne5160", "number": 838 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/chatillon1635.html", "name": "Marshal Châtillon to Abel Servien, Nijmegen, 3 August 1635 (BnF Français 3758, ff. 123-127)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/chatillon1635", "number": 837 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/clair1161.html", "name": "Unidentified to unidentified, newsletter of notices from England and Flanders, undated (1554/1555 hypothesised) (BnF Clairambault 1161, ff. 162-164)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/clair1161", "number": 836 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/clair1225.html", "name": "Paget? to 'Votre Excellence', Genoa, 3 April 1714 (BnF Clairambault 1225, ff. 53r-57v)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/clair1225", "number": 835 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/clair1225.html", "name": "Paget? to 'Votre Excellence', Genoa, 28 August 1714 (BnF Clairambault 1225, ff. 58r-59r)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/clair1225", "number": 834 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/clair460alpha.html", "name": "Darnétal? to Her Highness, unsigned letter, undated, c. 1650 (BnF Clairambault 460, pp. 84-85)", "type": "MASC", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/clair460alpha", "number": 833 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/clair460alpha.html", "name": "Darnétal to unidentified, Bordeaux, 8 September 1650 (BnF Clairambault 460, p. 103)", "type": "MASC", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/clair460alpha", "number": 832 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/clair460alpha.html", "name": "Darnétal to Madame (Her Highness), undated, c. 1650 (BnF Clairambault 460, pp. 106-107)", "type": "MASC", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/clair460alpha", "number": 831 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/clair460bar.html", "name": "Unidentified, letter headed 'pour Don Louis de Haro', undated (BnF Clairambault 460, p. 285)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/clair460bar", "number": 830 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/clair460bar.html", "name": "Chamilly to the Prince (Condé), 18 August, year not visible (BnF Clairambault 460, p. 285)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/clair460bar", "number": 829 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/clair460bar.html", "name": "Thomas to the Duke, London, 19 August, year not visible (BnF Clairambault 460, p. 286)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/clair460bar", "number": 828 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/clair460bar.html", "name": "Barrière to the Prince (Condé), London, 26 August, year not visible (BnF Clairambault 460, pp. 286-287)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/clair460bar", "number": 827 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/clair460num.html", "name": "Unidentified writer to the Prince (unidentified), numerical cipher, 1650–1653 volume, dates unchecked (BnF Clairambault 460, pp. 289–303)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/clair460num", "number": 826 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/dampierre1589.html", "name": "Dampierre to the Duke of Nevers, 5 Nov 1589 (BnF Français 3414, f. 125r–v)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/dampierre1589", "number": 825 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/dubellay65.html", "name": "Cardinal Jean du Bellay to the Constable Anne de Montmorency, undated (c.1550–55) (BnF Français 3142 ff. 65–66)", "type": "Homophonic substitution", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/dubellay65", "number": 824 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/dupuy155.html", "name": "Tuscan ambassador (Francesco Guicciardini?) to Ferdinando I de' Medici, Grand Duke of Tuscany, insert to letter of 10 May 1597 (BnF Dupuy 155 ff. 41–45)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/dupuy155", "number": 823 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/dupuy468.html", "name": "Ernestus dux and Joachimus (prob. Ernst of Brunswick-Lüneburg and Joachim von Maltzan) to Francis I, Eve of St Paul, c.1519 (BnF Dupuy 468 f. 28r–v)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/dupuy468", "number": 822 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/duquesne1681.html", "name": "Abraham Duquesne to Seignelay, road of Chios, 25 September 1681 (BnF NAF 22736 ff. 137r–138r)", "type": "Code", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/duquesne1681", "number": 821 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/duquesne1681.html", "name": "Abraham Duquesne to Seignelay, later letter of September 1681 (BnF NAF 22736 f. 144v)", "type": "Code", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/duquesne1681", "number": 820 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/entragues1581.html", "name": "[François ?] d'Entragues to Comte de Saint-Aignan (with the duc d'Anjou), letter on revolt in England, 1581–1582 (BnF Français 15906, ff. 759r–760v)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/entragues1581", "number": 819 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/entragues1581.html", "name": "[François ?] d'Entragues to Comte de Saint-Aignan, letter on a prisoner's statements under torture (Salcedo), 1581–1582 (BnF Français 15906, ff. 780r–781v)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/entragues1581", "number": 818 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/eugenie1859.html", "name": "Napoleon III to Empress Eugénie, to St Cloud, June 1859 (BnF NAF 11355 f. 3r)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/eugenie1859", "number": 817 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/eugenie1859.html", "name": "Napoleon III to Empress Eugénie, Milan, 9 June 1859 (BnF NAF 11355 f. 9r)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/eugenie1859", "number": 816 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/eugenie1859.html", "name": "Napoleon III to Empress Eugénie, Chiari/Covo, 16 June 1859 (BnF NAF 11355 f. 15r)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/eugenie1859", "number": 815 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/eugenie1859.html", "name": "Napoleon III to Empress Eugénie, Travagliato, 17 June 1859 (BnF NAF 11355 f. 17r)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/eugenie1859", "number": 814 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/eugenie1859.html", "name": "Napoleon III to Empress Eugénie, Brescia, 18 June 1859 (BnF NAF 11355 f. 18r)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/eugenie1859", "number": 813 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/eugenie1859.html", "name": "Napoleon III to Empress Eugénie, Brescia, 19 June 1859 (BnF NAF 11355 f. 19r)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/eugenie1859", "number": 812 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/eugenie1859.html", "name": "Empress Eugénie to Napoleon III, St Cloud, 23 June 1859 (BnF NAF 11355 f. 27r)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/eugenie1859", "number": 811 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/eugenie1859.html", "name": "Napoleon III to Empress Eugénie, Montechiari, 23 June 1859 (BnF NAF 11355 f. 29r)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/eugenie1859", "number": 810 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/eugenie1859.html", "name": "Empress Eugénie to Napoleon III, St Cloud, 24 June 1859 (BnF NAF 11355 f. 30r)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/eugenie1859", "number": 809 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/eugenie1859.html", "name": "Napoleon III to Empress Eugénie, Cavriana, 24 June 1859 (BnF NAF 11355 f. 32r)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/eugenie1859", "number": 808 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/eugenie1859.html", "name": "Napoleon III to Empress Eugénie, Cavriana, 25 June 1859 (BnF NAF 11355 f. 35r)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/eugenie1859", "number": 807 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/feuquieres1678.html", "name": "Louis XIV to Marquis de Feuquières, Versailles to Stockholm, 9 December 1678 (BnF NAF 22738, ff. 156r–157v)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/feuquieres1678", "number": 806 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/fogliani1568.html", "name": "Gasparo Fogliani to an unnamed Highness ('vostra altezza'), Paris, 20 October 1568 (BnF Français 3234, f. 103r–v)", "type": "MASC", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/fogliani1568", "number": 805 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/fr14765p351.html", "name": "Alchemical recipe in cipher, writer and recipient not established, 18th century? (BnF Français 14765, p. 351)", "type": "MASC", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/fr14765p351", "number": 804 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/fr3321dc.html", "name": "Signed DC to unidentified recipient, 20 May, year not established (c.1588?) (BnF Français 3321, f103r)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/fr3321dc", "number": 803 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/fr3575f56.html", "name": "Unidentified to unidentified, undated (Wars of Religion), on Clermont and Montgomery (BnF Français 3575, f56r)", "type": "Homophonic substitution", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/fr3575f56", "number": 802 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/fr4696num.html", "name": "Unidentified to unidentified (Duke of Nevers' circle), 1589? (BnF Français 4696, ff54r-55r)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/fr4696num", "number": 801 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/gondi1594.html", "name": "Girolamo Gondi to the Duke of Nevers and Rethel, Florence, 15 May 1594 (BnF Français 4700 ff. 9r-10r)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/gondi1594", "number": 800 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/herbault1625.html", "name": "Raimond Phélypeaux d'Herbault to Claude de Bullion, Fontainebleau, 29 July 1625 (BnF Français 3944 f. 99r–v)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/herbault1625", "number": 799 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/jeannin1607.html", "name": "Villeroy → Pierre Jeannin, 1607 (BnF Français 3516 ff. 86r–87r)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/jeannin1607", "number": 798 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/jeannin1607.html", "name": "Henri IV → Jeannin, Buzanval and Russy, 1607 (BnF Français 3516 f. 112r)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/jeannin1607", "number": 797 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/laboderie1608.html", "name": "Antoine de La Boderie to Pierre Jeannin, London, 7 June 1608 (BnF fr. 3516, ff. 59r–60v)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/laboderie1608", "number": 796 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/lerouge.html", "name": "F. Le Rouge to the Chancellor, Venice, 11 July, year unestablished (BnF Français 2971 f. 32r)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/lerouge", "number": 795 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/louis1635.html", "name": "Louis XIII to Marshals Chatillon and Breze, 30 June 1635 (BnF Francais 3758)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/louis1635", "number": 794 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/lucinge1588.html", "name": "Rene de Lucinge to Charles-Emmanuel I, Duke of Savoy, Paris, 9 June 1588 (BnF Italien 2242, ff. 122r-123r)", "type": "Homophonic substitution", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/lucinge1588", "number": 793 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/lucinge1588.html", "name": "Rene de Lucinge to Charles-Emmanuel I, Duke of Savoy, Paris, 18 June 1588 (BnF Italien 2242, ff. 124r-125r)", "type": "Homophonic substitution", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/lucinge1588", "number": 792 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/lucinge1588.html", "name": "Rene de Lucinge to Charles-Emmanuel I, Duke of Savoy, 3 August 1588 (BnF Italien 2242, ff. 131r-132v)", "type": "Homophonic substitution", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/lucinge1588", "number": 791 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/mondesir1769.html", "name": "Writer at Mondesir, Isle de France, to his wife, 20 November 1769, with later additions (duplicate copy) (BnF Français 5581, ff. 50r-56r)", "type": "MASC", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/mondesir1769", "number": 790 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/nevers1594gondi.html", "name": "Duke of Nevers to M. de Gondi, 27 March 1594 (BnF Français 3622 f. 91)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key transfer: external key matched and applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nevers1594gondi", "number": 789 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/paleologue1562.html", "name": "Marguerite Paléologue to Louis de Gonzague, duke of Nevers, 1562-1564 (BnF Français 4687, ff. 5v-7v)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/paleologue1562", "number": 788 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/rondinelli1590.html", "name": "Ercole Rondinelli to the Duke of Nevers, Paris, 11 Nov 1590 (BnF fr. 3613 ff. 62r-v)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key transfer: external key matched and applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/rondinelli1590", "number": 787 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/salviati1525.html", "name": "Cardinal Giovanni Salviati to unidentified recipient (Rdo Dno Lang.?), 16 October 1525 (BnF Français 2933, ff. 54r-57v)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/salviati1525", "number": 786 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/scipion1585.html", "name": "Scipione Gonzaga to the Duke of Nevers, [Rome, Dec 1585-89] (BnF Français 4696 f. 5r)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/scipion1585", "number": 785 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/scipion1585.html", "name": "Scipione Gonzaga to the Duke of Nevers, Rome, 24 March 1587 (BnF Français 4696 ff. 62r-v)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/scipion1585", "number": 784 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/scipion1585.html", "name": "Unidentified writer to 'V. Ecc.', ? Jan 1590 (BnF Français 4698 ff. 30r-31r)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/scipion1585", "number": 783 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/scipion1585.html", "name": "Unidentified writer to 'V.E.', Paris, 16 Feb 1590, recd 9 Apr 1590 (BnF Français 4698 f. 104r)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/scipion1585", "number": 782 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/sega1591.html", "name": "Filippo Sega to Cardinal Enrico Caetani, Paris, 9 Jan 1591 (BnF Français 3613 f. 148v)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sega1591", "number": 781 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/sessa1597.html", "name": "Philip II to Duke of Sessa, Madrid, 31 Mar 1597 (BnF fr. 23054 f. 145r)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sessa1597", "number": 780 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/sessa1597.html", "name": "Archduke Albert to Philip II, Hulst, 25 Aug 1596 (BnF fr. 23054 f. 58r-v)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sessa1597", "number": 779 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/turenne1528.html", "name": "Vicomte de Turenne to the Grand Master (Anne de Montmorency), Orvieto, 1 June 1528 (BnF Français 2999 ff. 13r-13v)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/turenne1528", "number": 778 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/vergier1696.html", "name": "Jacques Vergier to Monseigneur (prob. Jérôme de Pontchartrain), Calais, 10 Mar 1696 (BnF Clairambault 1108 f. 256r-257v)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/vergier1696", "number": 777 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/vergier1696.html", "name": "Jacques Vergier to Monseigneur (prob. Jérôme de Pontchartrain), Calais, 20 Mar 1696 (BnF Clairambault 1108 f. 247r-248r)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/vergier1696", "number": 776 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/vergier1696.html", "name": "Jacques Vergier to Monseigneur (prob. Jérôme de Pontchartrain), Boulogne, 26 Mar 1696 (BnF Clairambault 1108 f. 249r-250r)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/vergier1696", "number": 775 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/vergier1696.html", "name": "Jacques Vergier to Monseigneur (prob. Jérôme de Pontchartrain), Boulogne, 29 Mar 1696 (BnF Clairambault 1108 f. 251r-251v)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/vergier1696", "number": 774 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/vergier1696.html", "name": "Jacques Vergier to Monseigneur (prob. Jérôme de Pontchartrain), Boulogne, 30 Mar 1696 (BnF Clairambault 1108 f. 260r-260v)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/vergier1696", "number": 773 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/vergier1696.html", "name": "Jacques Vergier to Monseigneur (prob. Jérôme de Pontchartrain), Boulogne, '6e mars' [April?] 1696 (BnF Clairambault 1108 f. 261r-262r)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/vergier1696", "number": 772 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/villardeau.html", "name": "Anonymous memorandum 'Reflexions sur le testament de la Czarine', Russia, undated c. 1727 (BnF Clairambault 531, pp. 77, 79, 81)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/villardeau", "number": 771 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/villardeau.html", "name": "De Villardeau to a French minister ('Monseigneur'), St Petersburg, on the Holstein wedding, undated c. 1725-1727 (BnF Clairambault 531, pp. 123-125)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/villardeau", "number": 770 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/villeneuve1737.html", "name": "Louis-Sauveur, marquis de Villeneuve to Jean Otter, Constantinople, 29 June 1737 (BnF Français 22225, ff. 143r-144r)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/villeneuve1737", "number": 769 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/villeneuve1737.html", "name": "Louis-Sauveur, marquis de Villeneuve to Jean Otter, Constantinople, 19 August 1737 (BnF Français 22225, ff. 145r-146r)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/villeneuve1737", "number": 768 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/villeroy258.html", "name": "Nicolas de Neufville, seigneur de Villeroy to M. de La Verrière, 19 July, year not written (BnF Dupuy 61, f. 258r)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/villeroy258", "number": 767 }, { "submitted": "2026-10-13", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/vulcob1573.html", "name": "Charles IX to Jean de Vulcob, 7 March 1573 (BnF fr. 3318)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/vulcob1573", "number": 766 }, { "submitted": "2026-10-12", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1243", "name": "cpc_1912-05-17_HU__HU_Jasz Arokszalas_jolanka-22", "type": "MASC + Steganography", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment (GPT-6 Astra); independent review by Claude Opus 5.5", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1243", "number": 765 }, { "submitted": "2026-10-12", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1301", "name": "cpc_1912-06-04_HU__HU_Jasz Arokszalas_jolanka-23", "type": "MASC + Steganography", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment (GPT-6 Astra); independent review by Claude Opus 5.5", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-1301", "number": 764 }, { "submitted": "2026-10-12", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/374", "name": "MZV message No. 80174/1944", "type": "Kryha", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "key recovery by known plaintext from the published telegram 80172 (373), key transfer and verification (GPT-6.1 Sol); independent review by Claude Opus 5.5", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-374", "number": 763 }, { "submitted": "2026-10-12", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1785", "name": "pc_hcp_466", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_466_analysis.pdf", "number": 762 }, { "submitted": "2026-10-12", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1788", "name": "pc_hcp_469", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_469_analysis.pdf", "number": 761 }, { "submitted": "2026-10-12", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1791", "name": "pc_hcp_472", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_472_analysis.pdf", "number": 760 }, { "submitted": "2026-10-12", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1792", "name": "pc_hcp_473", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_473_analysis.pdf", "number": 759 }, { "submitted": "2026-10-12", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1793", "name": "pc_hcp_474", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_474_analysis.pdf", "number": 758 }, { "submitted": "2026-10-12", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1794", "name": "pc_hcp_475", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_475_analysis.pdf", "number": 757 }, { "submitted": "2026-10-12", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1795", "name": "pc_hcp_476", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_476_analysis.pdf", "number": 756 }, { "submitted": "2026-10-12", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1796", "name": "pc_hcp_477", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, partial decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_477_analysis.pdf", "number": 755 }, { "submitted": "2026-10-12", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1798", "name": "pc_hcp_479", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_479_analysis.pdf", "number": 754 }, { "submitted": "2026-10-12", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1801", "name": "pc_hcp_482", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_482_analysis.pdf", "number": 753 }, { "submitted": "2026-10-12", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1802", "name": "pc_hcp_483", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_483_analysis.pdf", "number": 752 }, { "submitted": "2026-10-12", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1803", "name": "pc_hcp_484", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_484_analysis.pdf", "number": 751 }, { "submitted": "2026-10-12", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1804", "name": "pc_hcp_485", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_485_analysis.pdf", "number": 750 }, { "submitted": "2026-10-12", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1805", "name": "pc_hcp_486", "type": "Steganography", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_486_analysis.pdf", "number": 749 }, { "submitted": "2026-10-12", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1806", "name": "pc_hcp_487", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_487_analysis.pdf", "number": 748 }, { "submitted": "2026-10-12", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1807", "name": "pc_hcp_488", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_488_analysis.pdf", "number": 747 }, { "submitted": "2026-10-12", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1808", "name": "pc_hcp_489", "type": "MASC + Pigpen", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_489_analysis.pdf", "number": 746 }, { "submitted": "2026-10-11", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/350", "name": "MZV message No. 3001/1944", "type": "Kryha", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, key recovery, decipherment (GPT-6.1 Sol); pairing of the two copies and independent review by Claude Opus 5.5", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-350", "number": 745 }, { "submitted": "2026-10-11", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/351", "name": "MZV message No. 3002/1944", "type": "Kryha", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "transcription, key recovery, decipherment (GPT-6.1 Sol); pairing of the two copies and independent review by Claude Opus 5.5", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/JOPPA5/hcsolve/tree/main/ciphers/hcp-351", "number": 744 }, { "submitted": "2026-10-11", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1809", "name": "pc_hcp_490", "type": "Mirror writing", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_490_analysis.pdf", "number": 743 }, { "submitted": "2026-10-11", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1810", "name": "pc_hcp_491", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_491_analysis.pdf", "number": 742 }, { "submitted": "2026-10-11", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1811", "name": "pc_hcp_492", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_492_analysis.pdf", "number": 741 }, { "submitted": "2026-10-11", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1813", "name": "pc_hcp_494", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_494_analysis.pdf", "number": 740 }, { "submitted": "2026-10-11", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1814", "name": "pc_hcp_495", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_495_analysis.pdf", "number": 739 }, { "submitted": "2026-10-11", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1815", "name": "pc_hcp_496", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_496_analysis.pdf", "number": 738 }, { "submitted": "2026-10-10", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1816", "name": "pc_hcp_497", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_497_analysis.pdf", "number": 737 }, { "submitted": "2026-10-10", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1817", "name": "pc_hcp_498", "type": "Transposition", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_498_analysis.pdf", "number": 736 }, { "submitted": "2026-10-10", "solver": "Eugen Antal", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1818", "name": "pc_hcp_499", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment", "agents": "NO", "extent": "Complete", "documentation": "https://ai.hcportal.eu/register/docs/HCPortal_499_analysis.pdf", "number": 735 }, { "submitted": "2026-10-09", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/desmarets1710.html", "name": "Nicolas Desmarets to unnamed 'Monsieur', Marly, 4 Jun 1710 (DECODE R10198, Desmaretz_1)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/desmarets1710", "number": 734 }, { "submitted": "2026-10-09", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/ferdinand3.html", "name": "Emperor Ferdinand III to the Cardinal-Infante Ferdinand, Vienna, 22 Feb 1640 (AGR Secrétairerie d'État allemande 540; DECODE R1890)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/ferdinand3", "number": 733 }, { "submitted": "2026-10-09", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/ferdinand3.html", "name": "Cardinal-Infante Ferdinand to Ferdinand, King of Hungary, Brussels, 16 Nov 1635 (AGR Secrétairerie d'État allemande 540; DECODE R1889)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/ferdinand3", "number": 732 }, { "submitted": "2026-10-09", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/ferdinand3.html", "name": "Ferdinand, King of Hungary, to the Cardinal-Infante Ferdinand, Stuttgart, 28 Oct 1634 (AGR Secrétairerie d'État allemande 540; DECODE R1887)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/ferdinand3", "number": 731 }, { "submitted": "2026-10-09", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/ghinucci1527.html", "name": "Girolamo Ghinucci, Bishop of Worcester, to Cardinal Wolsey, Valladolid, duplicate of 22 July 1527 (BL Cotton Vespasian C IV f. 363; DECODE R8613)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from external plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/ghinucci1527", "number": 730 }, { "submitted": "2026-10-09", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/gilino1527.html", "name": "\"El Gilino\" to Francesco II Sforza, Duke of Milan, Paredes de Nava, 15 September 1527 (BL Cotton Vespasian C IV ff. 214-218; DECODE R8572)", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported)", "role": "key transfer: external key matched and applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/gilino1527", "number": 729 }, { "submitted": "2026-10-09", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/hesse1672.html", "name": "Unidentified writer to the Hessian chancellor, Hamburg, 4/14 May 1672 (HStAM 4 f Dänemark Nr. 125 ff. 2-4; HCPortal 494)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: external key matched and applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/hesse1672", "number": 728 }, { "submitted": "2026-10-09", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/rupert.html", "name": "A woman to a royalist officer, graphic-sign letter, undated [before Oct 1645?] (BL Add MS 72438 f. 107r; DECODE R8728)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/rupert", "number": 727 }, { "submitted": "2026-10-09", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/schenck1706.html", "name": "Agent 'Sidon' to Baron Schenck, Vienna, 13 March 1706 (AN Kraków AKM 21 plik 30/1; DECODE R7487)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/schenck1706", "number": 726 }, { "submitted": "2026-10-09", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/schenck1706.html", "name": "Agent 'Sidon' to Baron Schenck, Vienna, 22 May 1706, N. 31 (AN Kraków AKM 21 plik 30/1; DECODE R7491)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/schenck1706", "number": 725 }, { "submitted": "2026-10-09", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/schenck1706.html", "name": "Agent 'Sidon' to Baron Schenck, Vienna, 5 June 1706, N. 35 (AN Kraków AKM 21 plik 30/1; DECODE R7494)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/schenck1706", "number": 724 }, { "submitted": "2026-10-09", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/schenck1706.html", "name": "Agent 'Sidon' to Baron Schenck, Vienna, 15 June 1706, N. 38 (AN Kraków AKM 21 plik 30/1; DECODE R7495)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/schenck1706", "number": 723 }, { "submitted": "2026-10-09", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/schenck1706.html", "name": "Agent 'Sidon' to Baron Schenck, Vienna, 3 July 1706, N. 44 (AN Kraków AKM 21 plik 30/1; DECODE R7499)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/schenck1706", "number": 722 }, { "submitted": "2026-10-08", "solver": "satorunet", "source": "https://satoru.net/crypt/ducroc1567/", "name": "Catherine de Médicis to Philibert du Croc, 27 April 1567, DECODE R2788", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported)", "role": "matching and applying a historical key from TNA SP 53/23 no.27, manuscript glyph analysis and contextual recovery of missing values; approximately 84% read; four rounds of Codex review separated key-supported from contextual values; no expert verification yet", "agents": "YES", "extent": "Partial", "documentation": "https://satoru.net/crypt/ducroc1567/", "number": 721 }, { "submitted": "2026-10-08", "solver": "Muhammed Nazeem", "source": "https://cryptocellar.org/bgac/g-army-july-1941.html", "name": "German Army Enigma message JBIYH, Nr. 242, 20 July 1941", "type": "Enigma", "model": "Anthropic Claude", "version": "Claude (version not reported)", "role": "Claude Code assisted in developing the CUDA cryptanalytic search; GPU simulated annealing searched the plugboard for rotor orders and start positions using 1941 German n-gram scoring; CryptoCellar records the message as broken", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/n4ze3m/enigma-jbiyh-break", "number": 720 }, { "submitted": "2026-10-08", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1523", "name": "pc_hcp_204", "type": "MASC", "model": "Not reported", "version": "Not reported", "role": "source research, language analysis, report preparation", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/anna-ticha/card-204.md", "number": 719 }, { "submitted": "2026-10-07", "solver": "alejandrozarco", "source": "https://dbourdeau.github.io/cyphersolver/dinteville1592.html", "name": "Joachim de Dinteville to the Duke of Nevers, Langres, 4 July 1592 (BnF Français 3621 no. 116 f. 130; DECODE R9451)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/dinteville1592", "number": 718 }, { "submitted": "2026-10-07", "solver": "alejandrozarco", "source": "https://dbourdeau.github.io/cyphersolver/dinteville1592.html", "name": "Joachim de Dinteville to the Duke of Nevers, Langres, 1 July 1592 (BnF Français 3621 no. 114 f. 128)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/dinteville1592", "number": 717 }, { "submitted": "2026-10-07", "solver": "Angus Robinson", "source": "https://dbourdeau.github.io/cyphersolver/labbe1582.html", "name": "Desiderio l'Abbé to the Duke of Nevers, Prague, 2 Mar 1577 (BnF fr. 3198 no. 30, f. 62)", "type": "Homophonic substitution", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/labbe1582", "number": 716 }, { "submitted": "2026-10-07", "solver": "Angus Robinson", "source": "https://dbourdeau.github.io/cyphersolver/labbe1582.html", "name": "Desiderio l'Abbé to the Duke of Nevers, Breslau, 2 May 1577 (BnF fr. 3198 no. 37, f. 75)", "type": "Homophonic substitution", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/labbe1582", "number": 715 }, { "submitted": "2026-10-07", "solver": "Angus Robinson", "source": "https://dbourdeau.github.io/cyphersolver/labbe1582.html", "name": "Desiderio l'Abbé to the Duke of Nevers, Breslau, 2 May 1577, second enciphered copy (BnF fr. 3198 no. 38, f. 76)", "type": "Homophonic substitution", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/labbe1582", "number": 714 }, { "submitted": "2026-10-06", "solver": "Paolo Rosson; Brett Burford (independent transcription)", "source": "https://dbourdeau.github.io/cyphersolver/desportes1593.html", "name": "Baudouin-Desportes to Pietro Aldobrandini, Paris, 22 Jul 1593 (BnF fr. 3984 f. 186, no. 88)", "type": "Polyphonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "AI-assisted application of Satoshi Tomokiyo's known key to two diplomatic letters; approximately 98.5% cipher words read; independent blind AI transcription with 93.1–95.9% sign agreement; historical specialist review pending", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/desportes1593.html", "number": 713 }, { "submitted": "2026-10-06", "solver": "Paolo Rosson; Brett Burford (independent transcription)", "source": "https://dbourdeau.github.io/cyphersolver/desportes1593.html", "name": "Baudouin-Desportes to Girolamo Frachetta, Paris, 22 Jul 1593 (BnF fr. 3984 f. 189, no. 90)", "type": "Polyphonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "AI-assisted application of Satoshi Tomokiyo's known key to two diplomatic letters; approximately 98.5% cipher words read; independent blind AI transcription with 93.1–95.9% sign agreement; historical specialist review pending", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/desportes1593.html", "number": 712 }, { "submitted": "2026-10-06", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1566", "name": "pc_hcp_247", "type": "MASC", "model": "Not reported", "version": "Not reported", "role": "source research, language analysis, report preparation", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/anna-ticha/card-247.md", "number": 711 }, { "submitted": "2026-10-06", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1567", "name": "pc_hcp_248", "type": "MASC", "model": "Not reported", "version": "Not reported", "role": "source research, language analysis, report preparation", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/anna-ticha/card-248.md", "number": 710 }, { "submitted": "2026-10-06", "solver": "alejandrozarco", "source": "https://dbourdeau.github.io/cyphersolver/matignon1586c3.html", "name": "Unsigned intelligence note, Poitou, 1586, Matignon's Cipher-3 (BnF fr. 15572 f. 276)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/matignon1586c3", "number": 709 }, { "submitted": "2026-10-06", "solver": "alejandrozarco", "source": "https://dbourdeau.github.io/cyphersolver/matignon1586c3.html", "name": "Unsigned cipher slip, Poitou/Guyenne, 1586, Matignon's Cipher-3 (BnF fr. 15571 f. 179)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/matignon1586c3", "number": 708 }, { "submitted": "2026-10-05", "solver": "Zijian Zeng", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/615", "name": "Cryptogram in 11 210", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6.1 Sol", "role": "organising the research, writing and checking the solver code, and managing the evidence", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/ArtificialZeng/hc615-cold-war-cipher-decoded", "number": 707 }, { "submitted": "2026-10-05", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1517", "name": "pc_hcp_198", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6", "role": "transcription, linguistic assessment of the readings, image review", "agents": "Not reported", "extent": "Complete", "documentation": "https://maxim-egorov.dev/research/anna-ticha-postcards/card-198/", "number": 706 }, { "submitted": "2026-10-05", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1518", "name": "pc_hcp_199", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6", "role": "transcription, linguistic assessment of the readings, image review", "agents": "Not reported", "extent": "Complete", "documentation": "https://maxim-egorov.dev/research/anna-ticha-postcards/card-199/", "number": 705 }, { "submitted": "2026-10-05", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1519", "name": "pc_hcp_200", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6", "role": "transcription, linguistic assessment of the readings, image review", "agents": "Not reported", "extent": "Complete", "documentation": "https://maxim-egorov.dev/research/anna-ticha-postcards/card-200/", "number": 704 }, { "submitted": "2026-10-05", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1520", "name": "pc_hcp_201", "type": "MASC", "model": "Not reported", "version": "Not reported", "role": "source research, language analysis, report preparation", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/anna-ticha/card-201.md", "number": 703 }, { "submitted": "2026-10-05", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1521", "name": "pc_hcp_202", "type": "MASC", "model": "Not reported", "version": "Not reported", "role": "source research, language analysis, report preparation", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/anna-ticha/card-202.md", "number": 702 }, { "submitted": "2026-10-05", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1522", "name": "pc_hcp_203", "type": "MASC", "model": "Not reported", "version": "Not reported", "role": "source research, language analysis, report preparation", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/anna-ticha/card-203.md", "number": 701 }, { "submitted": "2026-10-05", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1524", "name": "pc_hcp_205", "type": "MASC", "model": "Not reported", "version": "Not reported", "role": "source research, language analysis, report preparation", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/anna-ticha/card-205.md", "number": 700 }, { "submitted": "2026-10-05", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1542", "name": "pc_hcp_223", "type": "MASC", "model": "Not reported", "version": "Not reported", "role": "source research, language analysis, report preparation", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/anna-ticha/card-223.md", "number": 699 }, { "submitted": "2026-10-05", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1569", "name": "pc_hcp_250", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6", "role": "transcription, linguistic assessment of the readings, image review", "agents": "Not reported", "extent": "Complete", "documentation": "https://maxim-egorov.dev/research/anna-ticha-postcards/card-250/", "number": 698 }, { "submitted": "2026-10-05", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1657", "name": "pc_hcp_338", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6", "role": "transcription, linguistic assessment of the readings, image review", "agents": "Not reported", "extent": "Complete", "documentation": "https://maxim-egorov.dev/research/anna-ticha-postcards/card-338/", "number": 697 }, { "submitted": "2026-10-05", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1658", "name": "pc_hcp_339", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6", "role": "transcription, linguistic assessment of the readings, image review", "agents": "Not reported", "extent": "Complete", "documentation": "https://maxim-egorov.dev/research/anna-ticha-postcards/card-339/", "number": 696 }, { "submitted": "2026-10-05", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1759", "name": "pc_hcp_440", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6", "role": "transcription, linguistic assessment of the readings, image review", "agents": "Not reported", "extent": "Complete", "documentation": "https://maxim-egorov.dev/research/anna-ticha-postcards/card-440/", "number": 695 }, { "submitted": "2026-10-05", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1760", "name": "pc_hcp_441", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6", "role": "transcription, linguistic assessment of the readings, image review", "agents": "Not reported", "extent": "Complete", "documentation": "https://maxim-egorov.dev/research/anna-ticha-postcards/card-441/", "number": 694 }, { "submitted": "2026-10-05", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1766", "name": "pc_hcp_447", "type": "MASC", "model": "Not reported", "version": "Not reported", "role": "source research, language analysis, report preparation", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/Cipher-Atelier/anna-ticha-cipher-postcards/blob/f1b9c746afbe589ecc68dbca7bf213fce9e92d70/anna-ticha/card-447.md", "number": 693 }, { "submitted": "2026-10-05", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1772", "name": "pc_hcp_453", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6", "role": "transcription, linguistic assessment of the readings, image review", "agents": "Not reported", "extent": "Partial", "documentation": "https://maxim-egorov.dev/research/anna-ticha-postcards/card-453/", "number": 692 }, { "submitted": "2026-10-05", "solver": "Maxim Egorov / Cipher-Atelier", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1777", "name": "pc_hcp_458", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-6", "role": "transcription, linguistic assessment of the readings, image review", "agents": "Not reported", "extent": "Complete", "documentation": "https://maxim-egorov.dev/research/anna-ticha-postcards/card-458/", "number": 691 }, { "submitted": "2026-10-05", "solver": "Paolo Rosson", "source": "https://gallica.bnf.fr/", "name": "Garbino / Centurione cipher, 1528: no. 20, letter to \"Garbino\", Madrid, 11 April 1528 (BnF fr. 3022)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude (version not reported)", "role": "key reconstruction and large-scale decipherment; about 86% of the ciphertext lies in connected readings and the reconstructed table contains 779 values; blind synthetic controls and a five-point independent historical cross-check were published, but no palaeographer or historian has checked the full reading", "agents": "Not reported", "extent": "Partial", "documentation": "https://pangoleen.github.io/cipher-readings/centurione-1528.html", "number": 690 }, { "submitted": "2026-10-05", "solver": "Paolo Rosson", "source": "https://gallica.bnf.fr/", "name": "Garbino / Centurione cipher, 1528: first \"Hieronimo Ranzo\" letter, Martino Centurione to his son (BnF fr. 2988; duplicate fr. 3019 ff. 73–74)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude (version not reported)", "role": "key reconstruction and large-scale decipherment; about 86% of the ciphertext lies in connected readings and the reconstructed table contains 779 values; blind synthetic controls and a five-point independent historical cross-check were published, but no palaeographer or historian has checked the full reading", "agents": "Not reported", "extent": "Complete", "documentation": "https://pangoleen.github.io/cipher-readings/centurione-1528.html", "number": 689 }, { "submitted": "2026-10-05", "solver": "Paolo Rosson", "source": "https://gallica.bnf.fr/", "name": "Garbino / Centurione cipher, 1528: second \"Hieronimo Ranzo\" letter, Madrid, March 1528 (BnF fr. 2988)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude (version not reported)", "role": "key reconstruction and large-scale decipherment; about 86% of the ciphertext lies in connected readings and the reconstructed table contains 779 values; blind synthetic controls and a five-point independent historical cross-check were published, but no palaeographer or historian has checked the full reading", "agents": "Not reported", "extent": "Complete", "documentation": "https://pangoleen.github.io/cipher-readings/centurione-1528.html", "number": 688 }, { "submitted": "2026-10-05", "solver": "Feyseel Nur", "source": "https://dbourdeau.github.io/cyphersolver/beuningen1676.html", "name": "Coenraad van Beuningen to Gaspar Fagel, Westminster, 23 May/2 June 1676 (Nationaal Archief 3.01.18 inv. 249, scans 131-132)", "type": "Nomenclator", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/beuningen1676", "number": 687 }, { "submitted": "2026-10-04", "solver": "Feyseel Nur", "source": "https://dbourdeau.github.io/cyphersolver/aerssen1601.html", "name": "François van Aerssen to Johan van Oldenbarnevelt, Paris, 25 May 1601 (Nationaal Archief 3.01.14 inv. 2019, scan 57)", "type": "Nomenclator", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/aerssen1601", "number": 686 }, { "submitted": "2026-10-04", "solver": "Feyseel Nur", "source": "https://dbourdeau.github.io/cyphersolver/aerssen1601.html", "name": "François van Aerssen to Johan van Oldenbarnevelt, Paris, 2 June 1601 (Nationaal Archief 3.01.14 inv. 2019, scan 66)", "type": "Nomenclator", "model": "Combination", "version": "Claude (version not reported); GPT (version not reported)", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/aerssen1601", "number": 685 }, { "submitted": "2026-10-04", "solver": "WAINUT", "source": "https://dbourdeau.github.io/cyphersolver/battier1686.html", "name": "Pieter Battier to Gaspar Fagel, Madrid, 5 December 1686 (NA 3.01.18 inv. 401, scans 30R, 31L)", "type": "Code", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported); Gemini (gemini-4-argon)", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/battier1686", "number": 684 }, { "submitted": "2026-10-04", "solver": "WAINUT", "source": "https://dbourdeau.github.io/cyphersolver/battier1686.html", "name": "Pieter Battier to Gaspar Fagel, Madrid, 19 December 1686 (NA 3.01.18 inv. 401, scans 31R, 32L)", "type": "Code", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported); Gemini (gemini-4-argon)", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/battier1686", "number": 683 }, { "submitted": "2026-10-04", "solver": "WAINUT", "source": "https://dbourdeau.github.io/cyphersolver/battier1686.html", "name": "Pieter Battier to Gaspar Fagel, Madrid, 2 January 1687 (NA 3.01.18 inv. 401, scans 35R, 36L)", "type": "Code", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported); Gemini (gemini-4-argon)", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/battier1686", "number": 682 }, { "submitted": "2026-10-04", "solver": "WAINUT", "source": "https://dbourdeau.github.io/cyphersolver/battier1686.html", "name": "Pieter Battier to Gaspar Fagel, Madrid, 16 January 1687 (NA 3.01.18 inv. 401, scans 38L–39L; WAINUT reading)", "type": "Code", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported); Gemini (gemini-4-argon)", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/battier1686", "number": 681 }, { "submitted": "2026-10-04", "solver": "WAINUT", "source": "https://dbourdeau.github.io/cyphersolver/battier1686.html", "name": "Pieter Battier to Gaspar Fagel, Madrid, 30 January 1687 (NA 3.01.18 inv. 401, scans 41R, 42L, 44R)", "type": "Code", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported); Gemini (gemini-4-argon)", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/battier1686", "number": 680 }, { "submitted": "2026-10-04", "solver": "WAINUT", "source": "https://dbourdeau.github.io/cyphersolver/battier1686.html", "name": "Pieter Battier to Gaspar Fagel, Madrid, 13 February 1687 (NA 3.01.18 inv. 401, scans 45R–46R; WAINUT reading)", "type": "Code", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported); Gemini (gemini-4-argon)", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/battier1686", "number": 679 }, { "submitted": "2026-10-04", "solver": "WAINUT", "source": "https://dbourdeau.github.io/cyphersolver/battier1686.html", "name": "Pieter Battier to Gaspar Fagel, Madrid, 27 February 1687 (NA 3.01.18 inv. 401, scans 47R–50L; WAINUT reading)", "type": "Code", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported); Gemini (gemini-4-argon)", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/battier1686", "number": 678 }, { "submitted": "2026-10-04", "solver": "WAINUT", "source": "https://dbourdeau.github.io/cyphersolver/battier1686.html", "name": "Pieter Battier to Gaspar Fagel, Madrid, 13 March 1687, first letter (NA 3.01.18 inv. 401, scan 54R)", "type": "Code", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported); Gemini (gemini-4-argon)", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/battier1686", "number": 677 }, { "submitted": "2026-10-04", "solver": "WAINUT", "source": "https://dbourdeau.github.io/cyphersolver/battier1686.html", "name": "Pieter Battier to Gaspar Fagel, Madrid, 13 March 1687, second letter (NA 3.01.18 inv. 401, scans 55L, 55R)", "type": "Code", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported); Gemini (gemini-4-argon)", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/battier1686", "number": 676 }, { "submitted": "2026-10-04", "solver": "WAINUT", "source": "https://dbourdeau.github.io/cyphersolver/battier1686.html", "name": "Pieter Battier to Gaspar Fagel, Madrid, 24 April 1687 (NA 3.01.18 inv. 401, scans 58R, 59L)", "type": "Code", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported); Gemini (gemini-4-argon)", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/battier1686", "number": 675 }, { "submitted": "2026-10-04", "solver": "WAINUT", "source": "https://dbourdeau.github.io/cyphersolver/battier1686.html", "name": "Pieter Battier to Gaspar Fagel, Madrid, 10/19 June 1687 (NA 3.01.18 inv. 401, scans 67L, 67R)", "type": "Code", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported); Gemini (gemini-4-argon)", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/battier1686", "number": 674 }, { "submitted": "2026-10-04", "solver": "WAINUT", "source": "https://dbourdeau.github.io/cyphersolver/battier1686.html", "name": "Pieter Battier to Gaspar Fagel, Madrid, July 1687 (inventory 5 August 1687) (NA 3.01.18 inv. 401, scan 69L)", "type": "Code", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported); Gemini (gemini-4-argon)", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/battier1686", "number": 673 }, { "submitted": "2026-10-04", "solver": "WAINUT", "source": "https://dbourdeau.github.io/cyphersolver/battier1686.html", "name": "Pieter Battier to Gaspar Fagel, Madrid, 11 September 1687 (NA 3.01.18 inv. 401, scan 78R)", "type": "Code", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported); Gemini (gemini-4-argon)", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/battier1686", "number": 672 }, { "submitted": "2026-10-04", "solver": "WAINUT", "source": "https://dbourdeau.github.io/cyphersolver/battier1686.html", "name": "Pieter Battier to Gaspar Fagel, Madrid, 20 November 1687 (NA 3.01.18 inv. 401, scan 89R; WAINUT reading)", "type": "Code", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported); Gemini (gemini-4-argon)", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/battier1686", "number": 671 }, { "submitted": "2026-10-04", "solver": "WAINUT", "source": "https://dbourdeau.github.io/cyphersolver/battier1686.html", "name": "Pieter Battier to Gaspar Fagel, Madrid, 4 December 1687 (NA 3.01.18 inv. 401, scans 91R, 92L)", "type": "Code", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported); Gemini (gemini-4-argon)", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/battier1686", "number": 670 }, { "submitted": "2026-10-04", "solver": "WAINUT", "source": "https://dbourdeau.github.io/cyphersolver/battier1686.html", "name": "Pieter Battier to Gaspar Fagel, Madrid, 18 December 1687 (NA 3.01.18 inv. 401, scans 93R, 94L, 94R)", "type": "Code", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported); Gemini (gemini-4-argon)", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/battier1686", "number": 669 }, { "submitted": "2026-10-04", "solver": "WAINUT", "source": "https://dbourdeau.github.io/cyphersolver/battier1686.html", "name": "Pieter Battier to Gaspar Fagel, Madrid, 1 January 1688 (NA 3.01.18 inv. 401, scan 95R)", "type": "Code", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported); Gemini (gemini-4-argon)", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/battier1686", "number": 668 }, { "submitted": "2026-10-04", "solver": "WAINUT", "source": "https://dbourdeau.github.io/cyphersolver/battier1686.html", "name": "Pieter Battier to Gaspar Fagel, Madrid, 29 January 1688 (NA 3.01.18 inv. 401, scan 97R)", "type": "Code", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported); Gemini (gemini-4-argon)", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/battier1686", "number": 667 }, { "submitted": "2026-10-04", "solver": "WAINUT", "source": "https://dbourdeau.github.io/cyphersolver/battier1686.html", "name": "Pieter Battier to Gaspar Fagel, Madrid, 12 February 1688 (NA 3.01.18 inv. 401, scans 99R, 100L, 100R)", "type": "Code", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported); Gemini (gemini-4-argon)", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/battier1686", "number": 666 }, { "submitted": "2026-10-04", "solver": "WAINUT", "source": "https://dbourdeau.github.io/cyphersolver/battier1686.html", "name": "Pieter Battier to Gaspar Fagel, Madrid, 26 February 1688 (NA 3.01.18 inv. 401, scans 101R, 102L)", "type": "Code", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported); Gemini (gemini-4-argon)", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/battier1686", "number": 665 }, { "submitted": "2026-10-04", "solver": "WAINUT", "source": "https://dbourdeau.github.io/cyphersolver/battier1686.html", "name": "Pieter Battier to Gaspar Fagel, Madrid, 11 March 1688 (NA 3.01.18 inv. 401, scan 103R)", "type": "Code", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported); Gemini (gemini-4-argon)", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/battier1686", "number": 664 }, { "submitted": "2026-10-04", "solver": "WAINUT", "source": "https://dbourdeau.github.io/cyphersolver/battier1686.html", "name": "Pieter Battier to Gaspar Fagel, Madrid, 8 April 1688 (NA 3.01.18 inv. 401, scans 107R–109L)", "type": "Code", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported); Gemini (gemini-4-argon)", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/battier1686", "number": 663 }, { "submitted": "2026-10-04", "solver": "Feyseel Nur", "source": "https://dbourdeau.github.io/cyphersolver/erving1807aug.html", "name": "George W. Erving to James Madison, Madrid, private No. 24 \"Duplicate\", 10 Aug 1807, PS 11 Aug (NARA RG 59 Despatches Spain vol. 10, M31 reel 12 fr. 0362–0367)", "type": "Code", "model": "Combination", "version": "Claude Opus 5.5; GPT (version not reported)", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/erving1807aug", "number": 662 }, { "submitted": "2026-10-03", "solver": "satorunet", "source": "https://gallica.bnf.fr/", "name": "Dinteville to Nevers, Langres, 4 July 1592, BnF Français 3621 f.130r", "type": "Nomenclator", "model": "Combination", "version": "Claude Opus (version not reported); Claude Fable (version not reported); GPT (version not reported)", "role": "ciphertext-only transcription and key recovery over 524 signs using French language-model search, followed by manuscript refinement and validation against a contemporary interlinear decipherment in a sibling leaf; 15 of 18 shared signs agree and the sibling-derived key reproduces about 95% of the reading; no human expert verification yet", "agents": "YES", "extent": "Complete", "documentation": "https://satoru.net/crypt/1592_dinteville/", "number": 661 }, { "submitted": "2026-10-02", "solver": "satorunet", "source": "https://gallica.bnf.fr/", "name": "Antonio Pérez to Juan de Vargas Mexía, 15 April 1579, BnF Espagnol 132 ff.198r–199r", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "manuscript transcription, application of the published Devos–Tomokiyo key, recovery of missing sign values, connected reading and translation; an earlier independent reading by el-descifrador substantially agrees", "agents": "YES", "extent": "Partial", "documentation": "https://satoru.net/crypt/perez1579/", "number": 660 }, { "submitted": "2026-10-02", "solver": "satorunet", "source": "https://gallica.bnf.fr/", "name": "Mayenne to Henri III, early 1586, BnF Français 15572 f.143r", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "manuscript transcription, application of Tomokiyo’s reconstructed key and Viterbi-assisted glyph disambiguation; about 75% of the recto read and independently compared with Bourdeau’s partial work", "agents": "YES", "extent": "Partial", "documentation": "https://satoru.net/crypt/mayenne1586/", "number": 659 }, { "submitted": "2026-10-02", "solver": "satorunet", "source": "https://gallica.bnf.fr/", "name": "Nicolas de Baugy to Claude Mangot, Prague, 1 October 1616, BnF Clairambault 369 ff.2v–3r", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "manuscript transcription and first published reading using Tomokiyo’s reconstructed key; approximately 73% securely read and about 96% of signs assigned values; several codes remain unresolved", "agents": "YES", "extent": "Partial", "documentation": "https://satoru.net/crypt/baugy1616/", "number": 658 }, { "submitted": "2026-10-02", "solver": "satorunet", "source": "https://gallica.bnf.fr/", "name": "Philip II to Juan de Vargas Mexía, 15 April 1578, BnF Espagnol 132 ff.37r–38r", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "manuscript transcription and known-key decipherment using Devos Cp.30, with additional code-word recovery from Alcocer’s table; about 80% read by signs, with some passages still uncertain", "agents": "YES", "extent": "Partial", "documentation": "https://satoru.net/crypt/es132-f37/", "number": 657 }, { "submitted": "2026-10-02", "solver": "satorunet", "source": "https://gallica.bnf.fr/", "name": "Philip II to Juan de Vargas Mexía, 20 October 1578, BnF Espagnol 132 f.123r", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "manuscript transcription and application of the published Devos–Tomokiyo key; approximately 98% read with four code groups unresolved; an earlier independent reading by el-descifrador closely agrees", "agents": "YES", "extent": "Complete", "documentation": "https://satoru.net/crypt/es132-f123/", "number": 656 }, { "submitted": "2026-10-02", "solver": "satorunet", "source": "https://gallica.bnf.fr/", "name": "Ibarra to Olivares, Paris, 26 November 1592 (BnF Français 3641 no. 50, f. 109r)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "manuscript transcription, application of the Tomokiyo syllable table and Bourdeau office key, alignment with a contemporary clear copy and recovery of additional code-word values; approximately 72% read overall", "agents": "YES", "extent": "Partial", "documentation": "https://satoru.net/crypt/ibarra1592/", "number": 655 }, { "submitted": "2026-10-02", "solver": "satorunet", "source": "https://gallica.bnf.fr/", "name": "Feria to Idiáquez, Paris, 7 April 1593 (BnF Français 3641 no. 58, f. 124r)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "manuscript transcription, application of the Tomokiyo syllable table and Bourdeau office key, alignment with a contemporary clear copy and recovery of additional code-word values; approximately 72% read overall", "agents": "YES", "extent": "Partial", "documentation": "https://satoru.net/crypt/ibarra1592/", "number": 654 }, { "submitted": "2026-10-01", "solver": "Paolo Rosson", "source": "BnF ms. français 3984, ff. 186 and 189 (gallica.bnf.fr)", "name": "Desportes to Pietro Aldobrandini, 22 July 1593 (BnF fr. 3984 f. 186)", "type": "Polyphonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "sign recognition, decipherment, checks against the page images", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/pangoleen/desportes-1593", "number": 653 }, { "submitted": "2026-10-01", "solver": "Paolo Rosson", "source": "BnF ms. français 3984, ff. 186 and 189 (gallica.bnf.fr)", "name": "Desportes to Girolamo Frachetta, July 1593 (BnF fr. 3984 f. 189)", "type": "Polyphonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "sign recognition, decipherment, checks against the page images", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/pangoleen/desportes-1593", "number": 652 }, { "submitted": "2026-10-01", "solver": "Satoru (satorunet)", "source": "https://gallica.bnf.fr/ark:/12148/btv1b9061541x/f295.item", "name": "Vizani to Césy, 8 October 1637 (BnF Français 16158, f.292)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "transcription, code, decipherment, checks", "agents": "YES", "extent": "Partial", "documentation": "https://satoru.net/crypt/vizani1637/", "number": 651 }, { "submitted": "2026-10-01", "solver": "NoAutopilot; Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/mercy1648.html", "name": "Archduke Leopold Wilhelm to the abbé de Mercy, instruction in cipher, camp at Barneton, 6 Jun 1648 (BnF Espagnol 144 f. 22r–v)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Sonnet 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/mercy1648", "number": 650 }, { "submitted": "2026-10-01", "solver": "Ajaydas Devadas; Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/ormanetto1573.html", "name": "Philip II to the nuncio Ormanetto, nuncio's copy sent to the Cardinal of Como, spring 1573, docketed 17 Jun 1573 (ASV Segr. Stato Spagna 7 ff. 303r-304r; DECODE R116)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5; Claude Sonnet 5.5", "role": "key transfer: external key matched and applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/ormanetto1573", "number": 649 }, { "submitted": "2026-10-01", "solver": "Ajaydas Devadas; Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/ormanetto1576.html", "name": "Spain nunciature (Ormanetto or Sega) to the Cardinal of Como, Madrid, 15 Oct 1576 or 1577 (ASV Segr. Stato Spagna 10 f. 365; DECODE R118)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: external key matched and applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/ormanetto1576", "number": 648 }, { "submitted": "2026-10-01", "solver": "satorunet", "source": "https://dbourdeau.github.io/cyphersolver/vizani1637.html", "name": "Fra Guglielmo Vizani to the Comte de Césy, Prinkipo, 8 Oct 1637 (BnF fr. 16158 ff. 292-294)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: external key matched and applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/vizani1637", "number": 647 }, { "submitted": "2026-09-28", "solver": "Jack Willis", "source": "https://cryptocellar.org/bgac/spruch/31071941-285-in.pdf", "name": "Enigma message Nr. 285 FMNGI, 31 July 1941", "type": "Enigma", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "transcription, message key search, decipherment", "agents": "Not reported", "extent": "Complete", "documentation": "https://cryptocellar.org/bgac/the-fmngi-break.html", "number": 646 }, { "submitted": "2026-09-28", "solver": "Daniel Bourdeau", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/496", "name": "Otto von der Malsburg to Landgrave Wilhelm V, 5/15 January 1637 (HStAM 4 h Nr. 1411 ff. 3-4; HCPortal 496)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Not reported", "agents": "Not reported", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/malsburg1637.html", "number": 645 }, { "submitted": "2026-09-28", "solver": "Daniel Bourdeau", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/496", "name": "Otto von der Malsburg to Landgrave Wilhelm V, Wesel, 7/17 January 1637, with alphabetic postscript block (HStAM 4 h Nr. 1411 ff. 12-13; HCPortal 497)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Not reported", "agents": "Not reported", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/malsburg1637.html", "number": 644 }, { "submitted": "2026-09-28", "solver": "Daniel Bourdeau", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/496", "name": "Otto von der Malsburg to Landgrave Wilhelm V, 5 March / 23 February 1637 (HStAM 4 h Nr. 1411 f. 25; HCPortal 506)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Not reported", "agents": "Not reported", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/malsburg1637.html", "number": 643 }, { "submitted": "2026-09-28", "solver": "Daniel Bourdeau", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/496", "name": "Otto von der Malsburg to Landgrave Wilhelm V, 28 March 1637 o.s. (HStAM 4 h Nr. 1411 ff. 28-29; HCPortal 507)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "Not reported", "agents": "Not reported", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/malsburg1637.html", "number": 642 }, { "submitted": "2026-09-28", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/hesse1824.html", "name": "Snell to an unidentified correspondent ('A?ud'), sympathetic-ink message copied for the Hessian authorities, 20 Feb 1824 (HStAM 9 a Nr. 259 f. 249; HCPortal 513)", "type": "Polyalphabetic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/hesse1824", "number": 641 }, { "submitted": "2026-09-24", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/ilten1743.html", "name": "Unsigned letter, London → Johann Georg von Ilten, 15/26 Feb 1743 (GWLB Hannover Ms XXIII 1234:29,2 pp. 73–75)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: external key matched and applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/ilten1743", "number": 640 }, { "submitted": "2026-09-24", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/ilten1743.html", "name": "Ernst von Steinberg, London → Johann Georg von Ilten, 29 Mar / 9 Apr 1743 (GWLB Hannover Ms XXIII 1234:29,2 pp. 119–121)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: external key matched and applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/ilten1743", "number": 639 }, { "submitted": "2026-09-24", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/siena18.html", "name": "Maximilian I and the orators of Siena, League articles subscribed by Niklas Ziegler, Pisa, Nov 1496 (ASSi Concistoro 2308 fasc. 2 no. 18; DECODE R4806)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/siena18", "number": 638 }, { "submitted": "2026-09-24", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/siena25.html", "name": "Sienese envoys to the Signoria of Siena, slip on a lord's route by Lajatico, Radicondoli and Casole, undated (ASSi Concistoro 2308 fasc. 2 no. 25; DECODE R4813)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/siena25", "number": 637 }, { "submitted": "2026-09-23", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/joachim1530.html", "name": "Giovan Gioacchino da Passano (attrib.), London, to Francis I, 15 March 1530 (BnF Clairambault 331 ff. 156–157, cipher f. 157r–v)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/joachim1530", "number": 636 }, { "submitted": "2026-09-23", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/potocka1714.html", "name": "Barbara Potocka to Jakub Dunin, undated [c. 1714] (Archiwum Sanguszków ASang teka 301/8; DECODE R7525)", "type": "Homophonic substitution", "model": "Combination", "version": "Claude Opus 5.5; GPT-6", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/potocka1714", "number": 635 }, { "submitted": "2026-09-23", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/potocka1714.html", "name": "Barbara Potocka to Jakub Dunin, undated [c. 1714] (ASang teka 343/12; DECODE R7526)", "type": "Homophonic substitution", "model": "Combination", "version": "Claude Opus 5.5; GPT-6", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/potocka1714", "number": 634 }, { "submitted": "2026-09-23", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/potocka1714.html", "name": "Barbara Potocka to Jakub Dunin, 7 Mar 1716 (ASang teka 354/5_1; DECODE R7527)", "type": "Homophonic substitution", "model": "Combination", "version": "Claude Opus 5.5; GPT-6", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/potocka1714", "number": 633 }, { "submitted": "2026-09-23", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/potocka1714.html", "name": "Barbara Potocka to Jakub Dunin, undated (ASang teka 354/5_2; DECODE R7528)", "type": "Homophonic substitution", "model": "Combination", "version": "Claude Opus 5.5; GPT-6", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/potocka1714", "number": 632 }, { "submitted": "2026-09-23", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/potocka1714.html", "name": "Barbara Potocka to Jakub Dunin, undated (ASang teka 365/5; DECODE R7529)", "type": "Homophonic substitution", "model": "Combination", "version": "Claude Opus 5.5; GPT-6", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/potocka1714", "number": 631 }, { "submitted": "2026-09-23", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/potocka1714.html", "name": "Barbara Potocka to Jakub Dunin, undated (ASang teka 386/11; DECODE R7530)", "type": "Homophonic substitution", "model": "Combination", "version": "Claude Opus 5.5; GPT-6", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/potocka1714", "number": 630 }, { "submitted": "2026-09-23", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/potocka1714.html", "name": "Barbara Potocka to Jakub Dunin, 1715 (ASang teka 421/7; DECODE R7534)", "type": "Homophonic substitution", "model": "Combination", "version": "Claude Opus 5.5; GPT-6", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/potocka1714", "number": 629 }, { "submitted": "2026-09-23", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/potocka1714.html", "name": "Barbara Potocka to Jakub Dunin, 18 Jan 1716 (ASang teka 422/6; DECODE R7535)", "type": "Homophonic substitution", "model": "Combination", "version": "Claude Opus 5.5; GPT-6", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/potocka1714", "number": 628 }, { "submitted": "2026-09-23", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/potocka1714.html", "name": "Barbara Potocka to Jakub Dunin, Vilna, 31 Dec 1716 (ASang teka 422/7; DECODE R7536)", "type": "Homophonic substitution", "model": "Combination", "version": "Claude Opus 5.5; GPT-6", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/potocka1714", "number": 627 }, { "submitted": "2026-09-23", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/r2276.html", "name": "Unknown writer (probably Jean de Piles) to an unnamed patron, Reims, 19 June 1589, on the Reims chapter's postulation (BnF fr. 20974 pp. 1-3; DECODE R2276)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/r2276", "number": 626 }, { "submitted": "2026-09-23", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/r4817.html", "name": "Anonymous alchemical cipher note on the flyleaf of Mögling's Speculum sophicum rhodo-stauroticum, undated (volume 1618) (Zentralbibliothek Zürich SCH R 201, e-manuscripta image 1033442; DECODE R4817)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from external plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/r4817", "number": 625 }, { "submitted": "2026-09-23", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/segura1596.html", "name": "Matheo de Segura to the Constable of Castile, Madrid, 8 Aug 1596 (BnF espagnol 336 no. 99 ff. 196r-198r)", "type": "Homophonic substitution", "model": "OpenAI GPT", "version": "GPT-6", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/segura1596", "number": 624 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/andreae1616.html", "name": "J. V. Andreae, Chymische Hochzeit Christiani Rosencreutz, Strassburg 1616, inscriptions pp. 73, 95, 97, 116 (Embassy of the Free Mind; DECODE R4502)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/andreae1616", "number": 623 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/augurelio1535.html", "name": "Jörg Weinmeister to Dukes Wilhelm IV and Ludwig X of Bavaria, King John's camp before Palota, late Apr–May 1533 (BayHStA Kurbayern Äußeres Archiv 4591 ff. 232–235; DECODE R9407)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/augurelio1535", "number": 622 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/baner1640.html", "name": "Johan Banér to Torsten Stålhandske, Hof, 29 December 1640, intercepted copy in Kircher's correspondence (APUG 568 f. 239r–v)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/baner1640", "number": 621 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/cattanei1430.html", "name": "Francesco de' Cattanei to Gianfrancesco Gonzaga, Rome, 13 Feb 1430 (ASMn Archivio Gonzaga; DECODE R1854 image 4)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/cattanei1430", "number": 620 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/cattanei1430.html", "name": "Francesco de' Cattanei to Gianfrancesco Gonzaga, Rome, 21 Feb 1430, verso cipher lines (ASMn Archivio Gonzaga; DECODE R1854 image 5)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/cattanei1430", "number": 619 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/estrada1503.html", "name": "Isabella I of Castile to Hernán Duque de Estrada, copy X closing Madrid [?] September 1503 (AGS Patronato Real leg. 53 doc. 69, f. 322r–v)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/estrada1503", "number": 618 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/estrada1503.html", "name": "Isabella I of Castile to Hernán Duque de Estrada, copy Y, Segovia, 20 Aug 1503 (AGS Patronato Real leg. 53 doc. 69, f. 323r–v)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/estrada1503", "number": 617 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/ferdinand1619.html", "name": "Ferdinand of Bavaria, Elector of Cologne, to Duke Maximilian I of Bavaria, Bonn, 22 Dec 1619 (BayHStA Kurbayern Äußeres Archiv 4591 ff. 281–286; DECODE R9426)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/ferdinand1619", "number": 616 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/ferdinand1619.html", "name": "Archduke Albert, resolution for Licentiate Morreus (agent of Maximilian I), Brussels, 15 Dec 1619 (BayHStA Kurbayern Äußeres Archiv 4591 ff. 278–280; DECODE R9425)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/ferdinand1619", "number": 615 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/harley1582r8500.html", "name": "Sir Edward Stafford to [Sir Francis Walsingham], Paris, 20 Aug 1586 (BL Harley MS 1582 ff. 65-66; DECODE R8500)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/harley1582r8500", "number": 614 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/harley1582r8504.html", "name": "Sir Edward Stafford to [Sir Francis Walsingham], Paris, 9 Nov 1586 (BL Harley MS 1582 ff. 76–77; DECODE R8504)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/harley1582r8504", "number": 613 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/harley286.html", "name": "Sir Simonds D'Ewes, private cipher log of his son Clopton's fits, Suffolk, 3 Apr 1635 – early 1636 (BL Harley MS 286 f. 61; DECODE R7759)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/harley286", "number": 612 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/harley7001.html", "name": "Robert Reade to his cousin [Windebank], Paris, 19 Apr 1641 (BL Harley MS 7001 ff. 148–149; DECODE R7766)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: external key matched and applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/harley7001", "number": 611 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/jqa.html", "name": "John Quincy Adams to James Monroe (Secretary of State), St Petersburg, despatch No. 88, 25 June 1812 (NARA M35 reel 3 frames 0206–0207)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/jqa", "number": 610 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/marburg1635.html", "name": "Unknown writer to Hesse-Kassel, undated (volume 1635-52) (HStAM 4 d Nr. 1218 no. 49; DECODE R4500)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/marburg1635", "number": 609 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/mellon136.html", "name": "Pseudo-Johann Arndt, Das zweyte Silentium Dei, alchemical manuscript book, Glücksbrunn, 18-25 Sept 1798 (Beinecke Mellon MS 136, pp. 24-76; DECODE R2873)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/mellon136", "number": 608 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/memoire1560.html", "name": "Unknown Catholic gentleman of the Agenais to the connétable Anne de Montmorency, mémoire in cipher, 12 Dec 1560 (BnF fr. 3157 no. 67, ff. 152r–156v)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/memoire1560", "number": 607 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/mercoeur1587.html", "name": "[Henri, duc de Guise?] to Philippe-Emmanuel, duc de Mercœur, 16 Apr 1587 (BnF fr. 15564 f. 78; DECODE R4158)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/mercoeur1587", "number": 606 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/moncada1524.html", "name": "Hugo de Moncada to Charles V, Monaco, 6 Oct 1524 (BNE MSS/20213/12; DECODE R1191)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from external plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/moncada1524", "number": 605 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/mutiliana1428.html", "name": "'Ricc. de Mutiliana' to Gianfrancesco Gonzaga, Forli, 6 November 1428 (Archivio di Stato di Mantova, Archivio Gonzaga; DECODE R1854 image 3)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/mutiliana1428", "number": 604 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nevers1587.html", "name": "Correspondent at Randan to the duc de Nevers, 27 March 1587 (BnF fr. 3975 f. 28; DECODE R4285)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: external key matched and applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nevers1587", "number": 603 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nevers1587.html", "name": "Correspondent at Randan to the duc de Nevers, 4 April 1587 (BnF fr. 3975 f. 30; DECODE R4286)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: external key matched and applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nevers1587", "number": 602 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nevers1588.html", "name": "Court informant to the duc de Nevers, Paris, 29 April 1588 (BnF fr. 3976 f. 62; DECODE R3705)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nevers1588", "number": 601 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nevers1588.html", "name": "Same Paris informant to the Nevers household, 4 June 1588 (BnF fr. 3976 f. 131)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nevers1588", "number": 600 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/r1212.html", "name": "Pál Bornemisza, Bishop of Transylvania, to King Ferdinand I, c. 1556 (HHStA Staatskanzlei Interiora, Chiffrenschlüssel Kt. 13 Fasc. 20 ff. 38–39; DECODE R1212)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/r1212", "number": 599 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/r1854.html", "name": "Unnamed Gonzaga agent to Gianfrancesco Gonzaga, Rome, 9 Aug 1428 (Archivio di Stato di Mantova, Archivio Gonzaga; DECODE R1854 image 2)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/r1854", "number": 598 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/r1862.html", "name": "Venetian ambassador at Rome to the Doge and Senate, 29 Apr 1628 (ASVe IT ASVe 0045 010 Busta 27 f. 354; DECODE R1862)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from external plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/r1862", "number": 597 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/r3708.html", "name": "Paris informant to the duc de Nevers's household, Paris, 6 June 1588 (BnF fr. 3976 ff. 133-134; DECODE R3708)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/r3708", "number": 596 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/r3708.html", "name": "Paris informant to the duc de Nevers's household, Paris, 9 June 1588 (BnF fr. 3976 f. 139, piece 74; not on DECODE)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/r3708", "number": 595 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/r4157.html", "name": "Catherine de Médicis to Villeroy, Chenonceau, 7-8 February 1581 (BnF fr. 15564 ff. 30-34, cipher block f. 33r; DECODE R4157)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/r4157", "number": 594 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/r4349.html", "name": "Dominican scribe's colophon, Strängnäs convent for Västerås, 1517 (Uppsala UB C 513, f. 19v; DECODE R4349)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/r4349", "number": 593 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/r8364.html", "name": "Burghley to Walsingham, London to Paris, 29 Jan 1573 (Feb 1572 o.s.), letter-book copy (BL Harley MS 260 f. 419r-v; DECODE R8364)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key recovered from external plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/r8364", "number": 592 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/rangone1530.html", "name": "Guido Rangone to Anne de Montmorency, Venice, 24 Dec 1529 (BnF fr. 3082 f. 42r no. 19; copy Clair. 330 f. 206)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/rangone1530", "number": 591 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/rangone1530.html", "name": "Guido Rangone to Anne de Montmorency, Venice, 10 Jan 1530 (BnF fr. 3070 f. 81r no. 40; DECODE R4249; copy Clair. 331 f. 15)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/rangone1530", "number": 590 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/selve1535.html", "name": "Georges de Selve, bishop of Lavaur, to Francis I, Venice, 5 July 1536 (BnF fr. 3045 ff. 42-49, no. 31; DECODE R4232)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/selve1535", "number": 589 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/selve1535.html", "name": "Georges de Selve, bishop of Lavaur, to Francis I, Venice, 14 Sept 1535 (BnF fr. 3091 f. 25r-v, no. 14; DECODE R3697)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/selve1535", "number": 588 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/swieten1759.html", "name": "Gottfried van Swieten to Count Cobenzl, Bonn, 14 January 1759 (ARA Brussels SEG inv. 1236 ff. 327-328; DECODE R957)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/swieten1759", "number": 587 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/swieten1759.html", "name": "Gottfried van Swieten to Count Cobenzl, Bonn, 4 February 1759 (ARA Brussels SEG inv. 1236 ff. 344-345; DECODE R956)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/swieten1759", "number": 586 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/visconti1528.html", "name": "Galeazzo Visconti to Anne de Montmorency, camp at Landriano, 30 Aug 1528 (BnF fr. 3034 f. 154r-v no. 68; DECODE R4223)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/visconti1528", "number": 585 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/visconti1529.html", "name": "Galeazzo Visconti to Angelo Bolano, Alessandria, 15 Oct 1528 (BnF fr. 3045 f. 28 no. 24; DECODE R4230)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/visconti1529", "number": 584 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/visconti1529.html", "name": "Galeazzo Visconti to Francis I, camp at the pieve de Locate, 15 June 1529 (BnF fr. 3096 f. 91r no. 47; DECODE R4256)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/visconti1529", "number": 583 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/wardein1537.html", "name": "Unnamed Bavarian servant at King John Zápolya's court → Duke Ludwig X of Bavaria, Wardein (Nagyvárad), 14 Mar 1537 (BayHStA Kurbayern Äußeres Archiv 4591 ff. 257–259; DECODE R9414)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/wardein1537", "number": 582 }, { "submitted": "2026-09-22", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/wesselenyi1664.html", "name": "Ferenc Wesselényi, Palatine of Hungary → King Leopold I (inferred), Latin draft, c. 1663–64 (MNL OL E 199, 8. pallium 1. 01; DECODE R674)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/wesselenyi1664", "number": 581 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/alessandrino1568.html", "name": "Cardinal Alessandrino, Rome → nuncio G. B. Castagna, Madrid, 1568 (AAV Segr. Stato Spagna 6/I item 1, f. 6r; DECODE R93)", "type": "Polyphonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/alessandrino1568", "number": 580 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/alessandrino1568.html", "name": "Cardinal Alessandrino, Rome → nuncio Castagna, [7 Nov 1567] (AAV Spagna 6/I item 2, f. 42r; DECODE R94)", "type": "Polyphonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/alessandrino1568", "number": 579 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/alessandrino1568.html", "name": "Cardinal Alessandrino, Rome → nuncio Castagna, [1568] (AAV Spagna 6/I item 3, f. 55r; DECODE R95)", "type": "Polyphonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/alessandrino1568", "number": 578 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/alessandrino1568.html", "name": "Cardinal Alessandrino, Rome → nuncio Castagna, [19 May 1568] (AAV Spagna 6/I item 4, f. 81r; DECODE R96)", "type": "Polyphonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/alessandrino1568", "number": 577 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/alessandrino1568.html", "name": "Cardinal Alessandrino, Rome → nuncio Castagna, [1568] (AAV Spagna 6/I item 5, ff. 88r–89v; DECODE R97)", "type": "Polyphonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/alessandrino1568", "number": 576 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/alessandrino1568.html", "name": "Cardinal Alessandrino, Rome → nuncio Castagna, 1568 (AAV Spagna 6/I item 6, f. 136r; DECODE R98)", "type": "Polyphonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/alessandrino1568", "number": 575 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/alessandrino1568.html", "name": "Cardinal Alessandrino, Rome → nuncio Castagna, [July 1568] (AAV Spagna 6/I item 7, f. 169r–v; DECODE R99)", "type": "Polyphonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/alessandrino1568", "number": 574 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/alessandrino1568.html", "name": "Cardinal Alessandrino, Rome → nuncio Castagna, [spring 1569] (AAV Spagna 6/I item 8; DECODE R100)", "type": "Polyphonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/alessandrino1568", "number": 573 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/alessandrino1568.html", "name": "Cardinal Alessandrino, Rome → nuncio Castagna, [summer 1569] (AAV Spagna 6/I item 9, f. 291r–v; DECODE R101)", "type": "Polyphonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/alessandrino1568", "number": 572 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/alessandrino1568.html", "name": "Cardinal Alessandrino, Rome → nuncio Castagna, [summer 1569] (AAV Spagna 6/I item 10, f. 306r; DECODE R102)", "type": "Polyphonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/alessandrino1568", "number": 571 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/alessandrino1568.html", "name": "Cardinal Alessandrino, Rome → nuncio Castagna, [January 1569] (AAV Spagna 6/II item 13, f. 641r; DECODE R115)", "type": "Polyphonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/alessandrino1568", "number": 570 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/ayala1516.html", "name": "Diego López de Ayala to Cardinal Cisneros, Brussels, 30 Aug 1516 (AGS Estado leg. 496 fol. 22; DECODE R9954)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/ayala1516", "number": 569 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/bay1706.html", "name": "András Bay to Ferenc Rákóczi II, Jászvásár (Iași), 8 March 1706 (MNL OL G15 Caps. D. Fasc. 81. 5; DECODE R478)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key transfer: external key matched and applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/bay1706", "number": 568 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/bergamo1585.html", "name": "Paris nunciature (Girolamo Ragazzoni) to the Secretariat of State, Paris, 7 March 1586 [DECODE: 3 March] (AAV Segr. Stato Francia 18/2 f. 206r–v; DECODE R16)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/bergamo1585", "number": 567 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/bienvenut1590.html", "name": "Bienvenut to \"Vostre Altesse\" (probably Charles-Emmanuel I of Savoy), Paris, 28 February 1590 (BnF fr. 3623 no. 23, ff. 35-36; DECODE R9453)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/bienvenut1590", "number": 566 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/bizozola1520.html", "name": "Ambrogio Bizozola to Maximilian Sforza, Bologna, 4 November 1529 (BnF fr. 3034 ff. 156r-157v, no. 69; DECODE R4224)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/bizozola1520", "number": 565 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/boswell1628.html", "name": "Sir Ralph Boswell to William Boswell, England, c. 15 Dec 1627 (TNA SP 106/5 ff. 20–21; DECODE R413)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/boswell1628", "number": 564 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/caprile1520.html", "name": "Giuliano Caprile to Duke Alfonso I d'Este, Esztergom, 25 Feb 1521 (ASMo Ambasciatori Ungheria b. 4, Caprili 1520-21 no. 12; Vestigia 1921)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from external plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/caprile1520", "number": 563 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/caracciolo1537.html", "name": "Cardinal Marino Ascanio Caracciolo to Charles V, Milan, 14 Nov 1537 (AGS Estado leg. 1184 fol. 110; DECODE R9966)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/caracciolo1537", "number": 562 }, { "submitted": "2026-09-21", "solver": "Michael Brackx", "source": "https://dbourdeau.github.io/cyphersolver/champagne1590.html", "name": "Anonymous news-letter from the royal army before Paris to the duc de Nevers, 5 Jun 1590 (BnF fr. 3623 no. 25, f. 38; DECODE R9455)", "type": "Homophonic substitution", "model": "OpenAI GPT", "version": "GPT (version not reported)", "role": "key transfer: external key matched and applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/champagne1590", "number": 561 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/colonia1721.html", "name": "Unsigned cipher slip, Brussels to the Cologne nunciature (?), 9 Oct 1721 (ASV Arch. Nunz. Colonia 5, f. 26r; DECODE R24)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/colonia1721", "number": 560 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/deswart1782.html", "name": "Johan Isaac de Swart to Pieter van Bleiswijk, St Petersburg, 8 Mar 1782 (NA 3.01.25 inv. 610; DECODE R1036)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key transfer: external key matched and applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/deswart1782", "number": 559 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/deswart1782.html", "name": "Johan Isaac de Swart to the States-General, St Petersburg, 29 Nov 1787 (NA 1.01.02 inv. 7408; DECODE R1040)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key transfer: external key matched and applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/deswart1782", "number": 558 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/fulda1576.html", "name": "Unsigned note to the Bavarian court on the Fulda affair, [1576] (BayHStA Kurbayern Äußeres Archiv 4591 f. 129; DECODE R9325)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/fulda1576", "number": 557 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/gonzaga1590.html", "name": "Vincenzo I Gonzaga, Duke of Mantua, to Louis de Gonzague, duc de Nevers, Mantua, 17 September 1590 (BnF fr. 3979 ff. 92r-93r; DECODE R4176)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/gonzaga1590", "number": 556 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/guiche1551.html", "name": "Claude de La Guiche, bishop of Mirepoix, to Montmorency, Rome, 22 Nov 1551 (BnF fr. 3138 no. 22, f. 60v)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/guiche1551", "number": 555 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/haga1620.html", "name": "Cornelis Haga to the States General, Constantinople, 31 Mar 1620 (NA 1.01.02 inv. 6894; DECODE R2113 pp. 3+2)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/haga1620", "number": 554 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/haga1620.html", "name": "Cornelis Haga to the States General, Constantinople, 24 Apr 1620 (NA 1.01.02 inv. 6894; DECODE R2115 pp. 3, 4 top)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/haga1620", "number": 553 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/haga1620.html", "name": "Cornelis Haga to the States General, Constantinople, [4-7] May 1620 (NA 1.01.02 inv. 6894; DECODE R2115 pp. 4 bottom, 2, 1)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/haga1620", "number": 552 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/harley287.html", "name": "Lord Cobham to [Walsingham], Ostend, 22 Mar 1587/8 (BL Harley MS 287 ff. 70r–v; DECODE R8482–R8483)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/harley287", "number": 551 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/harley287.html", "name": "Intelligence report from Middelburg enclosed with Cobham's letters, Mar 1588 (BL Harley MS 287 f. 71r; DECODE R8484)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/harley287", "number": 550 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/harley287.html", "name": "Lord Cobham to [Walsingham], Ostend, 20 Mar 1587/8 (BL Harley MS 287 ff. 71v–72v; DECODE R8485–R8487)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/harley287", "number": 549 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/hereditary1796.html", "name": "Hereditary Prince Willem Frederik to Prince Frederik, Berlin, 12 March 1796 (KHA The Hague, Prins Willem V inv. 337; DECODE R2239)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/hereditary1796", "number": 548 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/hernannunez1674.html", "name": "Conde de Hernán Núñez to Baltasar de Fuenmayor, Stockholm, 5 Dec 1674 (AGR Brussels SEG 2559; DECODE R1012)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/hernannunez1674", "number": 547 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/hernannunez1674.html", "name": "Conde de Hernán Núñez to Baltasar de Fuenmayor, Stockholm, 15 Dec 1674 (AGR Brussels SEG 2559; DECODE R1013)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/hernannunez1674", "number": 546 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/hernannunez1674.html", "name": "Conde de Hernán Núñez to Baltasar de Fuenmayor, Stockholm, 19 Dec 1674 (AGR Brussels SEG 2559; DECODE R1014)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/hernannunez1674", "number": 545 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/hernannunez1674.html", "name": "Conde de Hernán Núñez to Baltasar de Fuenmayor, Stockholm, 26 Dec 1674 (AGR Brussels SEG 2559; DECODE R1015)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/hernannunez1674", "number": 544 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/heusner1637.html", "name": "Sigismund Heusner von Wandersleben to Axel Oxenstierna, Kassel, 15 May 1637 (Riksarkivet; DECODE R4332 = R3816)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/heusner1637", "number": 543 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/kaa4591.html", "name": "Jörg Weinmeister to the Dukes of Bavaria, Ofen (Buda), 8 Feb 1534, with enclosed news page (BayHStA KAA 4591 ff. 236–239; DECODE R9408)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/kaa4591", "number": 542 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/kaa4591.html", "name": "Bavarian agent to the Dukes of Bavaria, Ofen, 2 July 1534, with postscript (BayHStA KAA 4591 ff. 252–253; DECODE R9413)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/kaa4591", "number": 541 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/kaa4591.html", "name": "Bavarian agent to the Dukes of Bavaria, 7 June 1534 (BayHStA KAA 4591 f. 254r; DECODE R9413)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/kaa4591", "number": 540 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/kaa4591.html", "name": "Bavarian agent to the Dukes of Bavaria, personal letter on Anthoni and expenses, dated '8', in l?nnis [1534] (BayHStA KAA 4591 f. 254v; DECODE R9413)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/kaa4591", "number": 539 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/kaa4591.html", "name": "Bavarian agent to the secretary Johann Waisenfelder, in l?nnis [1534] (BayHStA KAA 4591 f. 255r; DECODE R9413)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/kaa4591", "number": 538 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/kaa4591.html", "name": "Bavarian agent to the Dukes of Bavaria, separate slip, 8 July [1534] (BayHStA KAA 4591 f. 256r; DECODE R9413)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/kaa4591", "number": 537 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/kaa4591b.html", "name": "Hieronymus Łaski to a Duke of Bavaria, Buda, 24 Nov 1529 (BayHStA KAA 4591 f. 121; DECODE R9322)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/kaa4591b", "number": 536 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/kaa4591b.html", "name": "King John Zápolya to Duke Ludwig of Bavaria, credential for Lazarus the Jew, [Buda, Nov 1529] (BayHStA KAA 4591 f. 122; DECODE R9322)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/kaa4591b", "number": 535 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/kaa4591b.html", "name": "Note from Łaski's circle to the Bavarian secretary, [1529–30] (BayHStA KAA 4591 f. 123; DECODE R9323)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/kaa4591b", "number": 534 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/kaa4591b.html", "name": "Hieronymus Łaski to the secretary Waisenfelder, Kraków, 16 June [1530] (BayHStA KAA 4591 f. 264; DECODE R9417)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/kaa4591b", "number": 533 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/kaa4591b.html", "name": "Hieronymus Łaski to a ducal councillor (prob. Leonhard von Eck), Łask, 17 Sep 1531 (BayHStA KAA 4591 ff. 226–228; DECODE R9403)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/kaa4591b", "number": 532 }, { "submitted": "2026-09-21", "solver": "setsunaatto", "source": "https://dbourdeau.github.io/cyphersolver/lauriere1593.html", "name": "Laurière (La Verrière) to the duc de Nevers, Châlons, 9 Jul 1593 (BnF fr. 3625 no. 55, f. 66r)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: external key matched and applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/lauriere1593", "number": 531 }, { "submitted": "2026-09-21", "solver": "setsunaatto", "source": "https://dbourdeau.github.io/cyphersolver/lauriere1593.html", "name": "Laurière (La Verrière) to the duc de Nevers, Courgenay, 13 Jul 1593 (BnF fr. 3625 no. 10, f. 10r)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: external key matched and applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/lauriere1593", "number": 530 }, { "submitted": "2026-09-21", "solver": "setsunaatto", "source": "https://dbourdeau.github.io/cyphersolver/lauriere1593.html", "name": "La Verrière (Laurière) to the duc de Nevers, Poissy, 12 Aug 1593 (BnF fr. 3985 f. 58r)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: external key matched and applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/lauriere1593", "number": 529 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/lebel1593.html", "name": "Lebel to Charles Emmanuel I of Savoy, Paris, 17 Jan 1593 (BnF fr. 3983 no. 11, f. 26r-v)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/lebel1593", "number": 528 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/lebel1593.html", "name": "Lebel to Charles Emmanuel I of Savoy, Paris, 10 Mar 1593 (BnF fr. 3983 no. 62, f. 130r-v)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/lebel1593", "number": 527 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/lebel1593.html", "name": "Lebel to Charles Emmanuel I of Savoy, Paris, 27 Mar 1593 (BnF fr. 3983 no. 100, ff. 194r-195r)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/lebel1593", "number": 526 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/lopehurtado1523.html", "name": "Lope Hurtado de Mendoza to Charles V, Rome, 3 and 5 Feb 1524 (RAH Salazar 9/30 ff. 130-133; DECODE R9846)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/lopehurtado1523", "number": 525 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/lopehurtado1523.html", "name": "Lope Hurtado de Mendoza to Grand Chancellor Gattinara, Rome, 28 Feb 1524 (RAH Salazar 9/30 ff. 285-286; DECODE R9866)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/lopehurtado1523", "number": 524 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/lopehurtado1523.html", "name": "Lope Hurtado de Mendoza to Grand Chancellor Gattinara, Rome, 20 Mar 1524 (RAH Salazar 9/30 ff. 430-431; DECODE R9868)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/lopehurtado1523", "number": 523 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/lopehurtado1523.html", "name": "Lope Hurtado de Mendoza to Charles V, Rome, 28 Mar 1524 (RAH Salazar 9/30 ff. 444-445; DECODE R9869)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/lopehurtado1523", "number": 522 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/lucini1767.html", "name": "Cesare Alberico Lucini, nuncio in Madrid, to the Secretariat of State (Cardinal Torrigiani), Madrid, 13 Oct 1767 (AAV Segr. Stato Spagna 304, f. 280; DECODE R120)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/lucini1767", "number": 521 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/malvezzi1548.html", "name": "Ferdinand I to Giovanni Maria Malvezzi, Augsburg, 23 January 1548 (Hadtörténelmi Levéltár 1548/3; DECODE R366)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/malvezzi1548", "number": 520 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/marechaux1520.html", "name": "Cardinal Lorenzo Campeggio, articles sworn for Francis I, c. October 1534 (BnF fr. 3081 ff. 41-42; DECODE R2322)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/marechaux1520", "number": 519 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/needham1587.html", "name": "Francis Needham to Walsingham, before Sluys, 28 July 1587 (BL Harley MS 287 ff. 39-40; DECODE R8479)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/needham1587", "number": 518 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/norreys1567.html", "name": "Sir Henry Norreys to Cecil, Paris, 9 March 1567/8 (BL Add MS 4136 f. 161, Forbes copy; DECODE R9251)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/norreys1567", "number": 517 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nuncio1566.html", "name": "Cardinal Alessandrino to nuncio G. B. Castagna, Rome, 8 Jan 1567 (ASV SdS Spagna 1, f. 165r; DECODE R85)", "type": "Polyphonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nuncio1566", "number": 516 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nuncio1566.html", "name": "Cardinal Alessandrino to nuncio G. B. Castagna, Rome, 25 July-2 Aug 1567, Milan jurisdiction (ASV SdS Spagna 1, f. 236r; DECODE R86)", "type": "Polyphonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nuncio1566", "number": 515 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nuncio1566.html", "name": "Cardinal Alessandrino to nuncio G. B. Castagna, Rome, c. 2 Aug 1567 (ASV SdS Spagna 1, ff. 249r-250r; DECODE R87)", "type": "Polyphonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nuncio1566", "number": 514 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nuncio1566.html", "name": "Cardinal Alessandrino to nuncio G. B. Castagna, Rome, 4 Nov 1567, chapter of a letter from France (ASV SdS Spagna 1, f. 301r-v; DECODE R88)", "type": "Polyphonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nuncio1566", "number": 513 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nuncio1566.html", "name": "Cardinal Alessandrino to nuncio G. B. Castagna, Rome, autumn 1567, second copy of the France chapter (ASV SdS Spagna 1, ff. 314r-v, 324r; DECODE R89-R90)", "type": "Polyphonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nuncio1566", "number": 512 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nunzio1736.html", "name": "Segreteria di Stato to Abbé Guiccioli, Madrid, Rome, 14 July 1736 (ASV Segr. Stato Spagna 423/1; DECODE R26)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nunzio1736", "number": 511 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nunzio1736.html", "name": "Segreteria di Stato to Abbé Guiccioli, Madrid, Rome, 21 July 1736 (Spagna 423/2; DECODE R179)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nunzio1736", "number": 510 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nunzio1736.html", "name": "Segreteria di Stato to Abbé Guiccioli, Madrid, Rome, 1736 (Spagna 423/3; DECODE R180)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nunzio1736", "number": 509 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nunzio1736.html", "name": "Segreteria di Stato to Abbé Guiccioli, Madrid, Rome, 4 Aug 1736 (Spagna 423/4; DECODE R181)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nunzio1736", "number": 508 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nunzio1736.html", "name": "Segreteria di Stato to Abbé Guiccioli, Madrid, Rome, 22 Sept 1736 (Spagna 423/5; DECODE R182)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nunzio1736", "number": 507 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nunzio1736.html", "name": "Segreteria di Stato to Abbé Guiccioli, Madrid, Rome, 29 Sept 1736 (Spagna 423/6; DECODE R183)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nunzio1736", "number": 506 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nunzio1736.html", "name": "Segreteria di Stato to Abbé Guiccioli, Madrid, Rome, 29 Sept 1736 (Spagna 423/7; DECODE R184)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nunzio1736", "number": 505 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nunzio1736.html", "name": "Segreteria di Stato to the Nunciature, Madrid, Rome, autumn 1736 (Spagna 423/8; DECODE R185)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nunzio1736", "number": 504 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nunzio1736.html", "name": "Segreteria di Stato to Abbé Guiccioli, Madrid, Rome, 6 Oct 1736 (Spagna 423/9; DECODE R186)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nunzio1736", "number": 503 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nunzio1736.html", "name": "Segreteria di Stato to Abbé Guiccioli, Madrid, Rome, 15 Dec 1736 (Spagna 423/10; DECODE R187)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nunzio1736", "number": 502 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nunzio1736.html", "name": "Segreteria di Stato to Abbé Guiccioli, Madrid, Rome, 22 Dec 1736 (Spagna 423/11; DECODE R188)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nunzio1736", "number": 501 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/papai1706.html", "name": "János Pápai to Ferenc Rákóczi II, Constantinople, 20 Feb 1706 (MNL OL G15 C 36; DECODE R796)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/papai1706", "number": 500 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/papai1706.html", "name": "János Pápai to Ferenc Rákóczi II, Constantinople, 16 Mar 1706 (MNL OL G15 C 36; DECODE R793)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/papai1706", "number": 499 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/papai1706.html", "name": "János Pápai to Ferenc Rákóczi II, Constantinople, early 1706, undated (MNL OL G15 C 36; DECODE R794)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/papai1706", "number": 498 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/papai1706.html", "name": "János Pápai to Ferenc Rákóczi II, Constantinople, 19 Dec 1706 (MNL OL G15 C 33 pp. 140-143; DECODE R823)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/papai1706", "number": 497 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/papai1706.html", "name": "János Pápai to Ferenc Rákóczi II, Constantinople, 5 Jan 1707 (MNL OL G15 E 80 pp. 2-11; DECODE R765)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/papai1706", "number": 496 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/papai1706.html", "name": "Unsigned envoy (Pápai's key) to Ferenc Rákóczi II, [Constantinople], 1707 (MNL OL G15 D 80 pp. 110-111; DECODE R784)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/papai1706", "number": 495 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/papai1706.html", "name": "János Pápai to Ferenc Rákóczi II, Constantinople, 16 May 1708 (MNL OL G15 E 109 pp. 85-90; DECODE R757)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/papai1706", "number": 494 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/papai1706.html", "name": "János Pápai to Ferenc Rákóczi II, Constantinople, 8 May 1710 (MNL OL G15 H 226 pp. 89-96; DECODE R741)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/papai1706", "number": 493 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/r1892.html", "name": "Prince Frederick of Orange (England) to an officer of the Dutch émigré troops in Germany, late Nov–early Dec 1795 (KHA The Hague, Prins Willem V inv. 339; DECODE R1892)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/r1892", "number": 492 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/r2232.html", "name": "Wolff to Wilhelmina of Prussia, Princess of Orange, The Hague, 25 Jul 1801 (KHA The Hague, Wilhelmina Prinses van Pruisen inv. 192; DECODE R2232)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/r2232", "number": 491 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/r2234.html", "name": "Orangist correspondent at Basle to Prince William V, 17 Aug 1796 (30 thermidor an IV) (KHA The Hague, Prins Willem V inv. 339; DECODE R2234)", "type": "Polyalphabetic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/r2234", "number": 490 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/r2242.html", "name": "Prince Frederick of Orange to the Hereditary Prince, London, [late May/June] 1795, pp. 1, 3-4 (KHA The Hague, Koning Willem I inv. XVIII-3; DECODE R2242)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: external key matched and applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/r2242", "number": 489 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/r9416.html", "name": "Bavarian agent to the Dukes of Bavaria, report on the Pressburg talks, Buda, 12 March [c. 1533-34] (BayHStA Kurbayern Äußeres Archiv 4591 f. 263; DECODE R9416)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/r9416", "number": 488 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/r9416.html", "name": "Bavarian servant to his duke, 'eritags nach Jacobi' [c. 1533-34] (BayHStA Kurbayern Äußeres Archiv 4591 f. 262; DECODE R9416)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/r9416", "number": 487 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/rakoczi1704.html", "name": "Agent at Danzig to Ferenc Rákóczi II, Danzig, 28 Oct [1707] (MNL OL G15 Caps. C. Fasc. 39 pp. 346-347; DECODE R922)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: external key matched and applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/rakoczi1704", "number": 486 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/rakoczi1704.html", "name": "Agent with the Swedish army to Ferenc Rákóczi II, 'au quartier', 5 Nov [1707] (MNL OL G15 Caps. C. Fasc. 39 pp. 312-314; DECODE R912)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: external key matched and applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/rakoczi1704", "number": 485 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/riksarkivet1628.html", "name": "Johann Friedrich, archbishop of Bremen, to Johan Adler Salvius, Hamburg, 27 Nov 1631 (Riksarkivet; DECODE R4330)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/riksarkivet1628", "number": 484 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/riksarkivet1628.html", "name": "Johann Friedrich, archbishop of Bremen, to Johan Adler Salvius, Bremen, 2 Dec 1631 (Riksarkivet; DECODE R4331)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/riksarkivet1628", "number": 483 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/rome1536.html", "name": "Cardinal de Mâcon to Anne de Montmorency, Rome, 26 Jan 1537 (BnF fr. 3053 f. 6; DECODE R4233)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/rome1536", "number": 482 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/rome1536.html", "name": "Cardinal de Mâcon to Anne de Montmorency, Rome, Feb 1537 (BnF fr. 3053 ff. 16r-18v; DECODE R4234)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/rome1536", "number": 481 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/rome1536.html", "name": "Cardinal de Mâcon to Anne de Montmorency, Rome, 15 Feb 1537 (BnF fr. 3053 f. 21; DECODE R4235)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/rome1536", "number": 480 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/rome1536.html", "name": "Bishop of Mâcon to Anne de Montmorency, Rome, [13?] Sept 1536 (BnF fr. 3053 ff. 32v-33r; DECODE R4238)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/rome1536", "number": 479 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/rome1536.html", "name": "Cardinal de Mâcon to Anne de Montmorency, Rome, 6 Apr 1537, letter 1 (BnF fr. 3053 f. 35r-v; DECODE R4239)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/rome1536", "number": 478 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/rome1536.html", "name": "Cardinal de Mâcon to Anne de Montmorency, Rome, 6 Apr 1537, letter 2 with postscript (BnF fr. 3053 ff. 36r-38v; DECODE R4239)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/rome1536", "number": 477 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/rome1536.html", "name": "Bishop of Mâcon to Anne de Montmorency, Orvieto, 2 Sept 1536 (BnF fr. 3053 f. 40r-v; DECODE R4240)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/rome1536", "number": 476 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/rome1536.html", "name": "Bishop of Mâcon to Anne de Montmorency, Orvieto, [early Sept] 1536, letter 1 (BnF fr. 3053 f. 77r-v; DECODE R4247)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/rome1536", "number": 475 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/rome1536.html", "name": "Bishop of Mâcon to Anne de Montmorency, Orvieto, 1 Sept 1536, letter 2 (BnF fr. 3053 f. 78v; DECODE R4247)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/rome1536", "number": 474 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/rome1536.html", "name": "Cardinal de Mâcon to Anne de Montmorency, Rome, 11 Apr 1537 (BnF fr. 3071 no. 4 ff. 9-10, slip f. 9bis)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/rome1536", "number": 473 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/rupert1645.html", "name": "Charles I, Oxford, to Prince Rupert, 29 Apr 1645, duplicate (BL Add MS 18983 f. 14; DECODE R4921)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key transfer: external key matched and applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/rupert1645", "number": 472 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/sanchez1523.html", "name": "Alonso Sánchez to Charles V, Venice, 16 August 1523 (RAH Salazar 9/28 = A-28, ff. 563-564; DECODE R9767)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sanchez1523", "number": 471 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/sanchez1523.html", "name": "Caracciolo and Alonso Sánchez to Charles V, Venice, 16 August 1523 (RAH Salazar 9/28 = A-28, ff. 569-571; DECODE R9769)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sanchez1523", "number": 470 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/sessa1523.html", "name": "Duke of Sessa to Charles V, Rome, 26 Apr 1523 (RAH Salazar A-27 ff. 437-438; DECODE R9665)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: external key matched and applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sessa1523", "number": 469 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/smith1562.html", "name": "Sir Thomas Smith to Elizabeth I, Chartres, 17 Jan 1562/3 (BL Add MS 4136 f. 157; DECODE R9248)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/smith1562", "number": 468 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/smith1562.html", "name": "Sir Thomas Smith to William Cecil, Paris, 27 Jan 1562/3 (BL Add MS 4136 f. 158; DECODE R9249)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/smith1562", "number": 467 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/smith1562.html", "name": "Sir Thomas Smith to William Cecil, Blois, 7 Mar 1562/3 (BL Add MS 4136 ff. 163-164; DECODE R9252)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/smith1562", "number": 466 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/smith1562.html", "name": "Sir Thomas Smith to Elizabeth I, Blois, 12 Mar 1562/3 (BL Add MS 4136 ff. 167-168; DECODE R9254)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/smith1562", "number": 465 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/smith1562.html", "name": "Sir Thomas Smith to William Cecil, Amboise, 13 Apr 1563 (BL Add MS 4136 f. 159; DECODE R9250)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/smith1562", "number": 464 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/smith1562.html", "name": "Sir Thomas Smith to Elizabeth I, [Valmont], 27/28 Jul 1563 (BL Add MS 4136 f. 159; DECODE R9250)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/smith1562", "number": 463 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/smith1562.html", "name": "Sir Thomas Smith to William Cecil, Valence, 1 Sep 1564 (BL Add MS 4136 f. 164; DECODE R9252)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/smith1562", "number": 462 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/smith1562.html", "name": "Sir Thomas Smith to William Cecil, Marseilles, 13 Nov 1564 (BL Add MS 4136 f. 166; DECODE R9253)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/smith1562", "number": 461 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/smith1562.html", "name": "Sir Thomas Smith to William Cecil, Arles, 20 Nov 1564 (BL Add MS 4136 f. 166; DECODE R9253)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/smith1562", "number": 460 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/smith1562.html", "name": "Sir Thomas Smith to William Cecil, Arles, 22 Nov 1564 (BL Add MS 4136 f. 166; DECODE R9253)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/smith1562", "number": 459 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/smith1562.html", "name": "Sir Thomas Smith to William Cecil, Arles, 24 Nov 1564 (BL Add MS 4136 f. 166; DECODE R9253)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/smith1562", "number": 458 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/smith1562.html", "name": "Sir Thomas Smith to William Cecil, Toulouse, 9 Feb 1564/5 (BL Add MS 4136 f. 167; DECODE R9254)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/smith1562", "number": 457 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/smith1562.html", "name": "Sir Thomas Smith to William Cecil, Bourbon-l'Archambault, 22 Mar 1565/6 (BL Add MS 4136 ff. 159-160; DECODE R9250)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/smith1562", "number": 456 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/smith1562.html", "name": "Sir Thomas Smith to William Cecil, Paris, 29 Apr 1566 (BL Add MS 4136 f. 160; DECODE R9250)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/smith1562", "number": 455 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/smith1562.html", "name": "Sir Thomas Smith to William Cecil, Paris, 15 Oct 1562 (BL Add MS 4136 f. 140; DECODE R9236)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/smith1562", "number": 454 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/smith1562.html", "name": "Sir Thomas Smith to William Cecil, Poissy, 20 Oct 1562 (BL Add MS 4136 f. 140; DECODE R9236)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/smith1562", "number": 453 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/smith1562.html", "name": "Sir Thomas Smith to William Cecil, 15/17 Dec 1562 (BL Add MS 4136 f. 140; DECODE R9236)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/smith1562", "number": 452 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/smith1562.html", "name": "Sir Thomas Smith to Elizabeth I, 4 Nov 1563 (BL Add MS 4136 f. 140; DECODE R9236)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/smith1562", "number": 451 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/sperantio1534.html", "name": "King John Zápolya's side → the dukes of Bavaria (addressed to their agent Aurelio Augurelio), 18 Apr 1533 (BayHStA Kurbayern Äußeres Archiv 4591 ff. 260–261; DECODE R9415)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sperantio1534", "number": 450 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/sperantio1534.html", "name": "King John Zápolya of Hungary → Dukes Wilhelm IV and Ludwig X of Bavaria, Buda, 6 Feb 1534 (BayHStA KAA 4591 f. 248; DECODE R9411)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sperantio1534", "number": 449 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/sperantio1534.html", "name": "An agent at Buda (Ofen) → a duke of Bavaria (cover to Cornelio Sperantio), 8 Feb [1534] (BayHStA KAA 4591 ff. 250–251; DECODE R9412)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sperantio1534", "number": 448 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/spinelly1516.html", "name": "Thomas Spinelly → Henry VIII, Brussels, 1 Feb 1517 (BL Cotton MS Galba B V ff. 40–41; DECODE R8416)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/spinelly1516", "number": 447 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/stowe166.html", "name": "[Thomas Edmondes] → Lord Treasurer Burghley, [Chartres, 19 Jan 1593] (BL Stowe MS 166 ff. 50–51; DECODE R7770)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/stowe166", "number": 446 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/stowe166.html", "name": "[Thomas Edmondes] → Lord Treasurer Burghley, Tours, 16 Feb 1593 (BL Stowe MS 166 ff. 56–57; DECODE R7771)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/stowe166", "number": 445 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/stowe166.html", "name": "[Thomas Edmondes] → Lord Treasurer Burghley, Tours, 3 Mar 1593 (BL Stowe MS 166 ff. 58–59; DECODE R7772)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/stowe166", "number": 444 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/stowe166.html", "name": "[Thomas Edmondes] → Lord Treasurer Burghley, Blois, 16 Mar 1593 (BL Stowe MS 166 ff. 60–61; DECODE R7773)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/stowe166", "number": 443 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/stowe166.html", "name": "[Thomas Edmondes] → Lord Treasurer Burghley, camp before Laon, Jul 1594 (BL Stowe MS 166 ff. 109–110; DECODE R7774)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/stowe166", "number": 442 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/stowe166.html", "name": "[Thomas Edmondes] → Lord Treasurer Burghley, [camp before Laon, 23 Jul 1594] (BL Stowe MS 166 ff. 111–112; DECODE R7775)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/stowe166", "number": 441 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/throck1569.html", "name": "Sir Nicholas Throckmorton to James Stewart, Earl of Moray, Regent of Scotland, Greenwich, 20 July 1569 (BL Add MS 33531 ff. 79-80; DECODE R8348)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/throck1569", "number": 440 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/vanreede1787.html", "name": "Arend Willem van Reede to L. P. van de Spiegel, Berlin, 29 Dec 1787 (Nationaal Archief 3.01.26 inv. 190; DECODE R1026)", "type": "Code", "model": "OpenAI GPT", "version": "GPT-5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/vanreede1787", "number": 439 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/vanreede1787.html", "name": "Arend Willem van Reede to L. P. van de Spiegel, Berlin, 4 Mar 1788 (Nationaal Archief 3.01.26 inv. 190; DECODE R1027)", "type": "Code", "model": "OpenAI GPT", "version": "GPT-5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/vanreede1787", "number": 438 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/vanreede1792.html", "name": "Arend Willem van Reede to M. de Larrey (for Stadholder William V), Berlin, 4 Feb 1792 (KHA The Hague, Prins Willem V inv. 205; DECODE R1057)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/vanreede1792", "number": 437 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/walsingham1585.html", "name": "Sir Francis Walsingham to Edward Wotton, Nonsuch, 28 Jul 1585 (BL Add MS 32657 ff. 125-127; DECODE R4838)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from external plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/walsingham1585", "number": 436 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/walsingham1585.html", "name": "Sir Francis Walsingham to Edward Wotton, the Court, 7 Aug 1585 (BL Add MS 32657 ff. 140-141; DECODE R4839)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from external plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/walsingham1585", "number": 435 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/walsingham1585.html", "name": "Sir Francis Walsingham to Edward Wotton, the Court, 21 Aug 1585 (BL Add MS 32657 ff. 163-164; DECODE R4840)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from external plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/walsingham1585", "number": 434 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/windischgraetz1721.html", "name": "Windischgrätz brothers' letter (Leopold Viktorin → Ernst Friedrich per DECODE; the clear text suggests Ernst Friedrich is the writer), Brussels, 18 Nov 1721 (SOA Plzeň RA Windischgrätz inv. 1433 karton 202; DECODE R5029)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/windischgraetz1721", "number": 433 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/wotton1585.html", "name": "Edward Wotton to Sir Francis Walsingham, Scotland, 25 Aug 1585, draft (BL Add MS 32657 ff. 167-168; DECODE R4841)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/wotton1585", "number": 432 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/wotton1585.html", "name": "Edward Wotton to Sir Francis Walsingham, Scotland, 30 Aug 1585, draft (BL Add MS 32657 ff. 173-174; DECODE R4842)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/wotton1585", "number": 431 }, { "submitted": "2026-09-21", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/wotton1585.html", "name": "Edward Wotton to Sir Francis Walsingham, Scotland, 1 Sep 1585, draft (BL Add MS 32657 ff. 175-176; DECODE R4843)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/wotton1585", "number": 430 }, { "submitted": "2026-09-20", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/egmond.html", "name": "Charles of Egmond, duke of Guelders, to the grand master of France, Arnhem, 18 July [year absent] (BnF fr. 3015 no. 8, f. 16)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/egmond", "number": 429 }, { "submitted": "2026-09-20", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/lopehurtado.html", "name": "Lope Hurtado de Mendoza to Charles V, Rome, 1 Nov 1522 (RAH Salazar 9/26 ff. 237-243; DECODE R9644)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/lopehurtado", "number": 428 }, { "submitted": "2026-09-20", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/lopehurtado.html", "name": "Lope Hurtado de Mendoza to Charles V, Rome, 9 Nov 1522, duplicate despatch of R9644 (RAH Salazar 9/26 ff. 260-265; DECODE R9648)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/lopehurtado", "number": 427 }, { "submitted": "2026-09-20", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/lopehurtado.html", "name": "Lope Hurtado de Mendoza to Charles V, Rome, Nov 1522 (RAH Salazar 9/26 ff. 269-272; DECODE R9650)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/lopehurtado", "number": 426 }, { "submitted": "2026-09-20", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/lopehurtado.html", "name": "Lope Hurtado de Mendoza to Charles V, Rome, 9 Nov 1522 (RAH Salazar 9/26 ff. 266-268; DECODE R9649)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/lopehurtado", "number": 425 }, { "submitted": "2026-09-20", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nunzio1718.html", "name": "Segreteria di Stato to the Nuncio in Spain, Rome, 11 Jan 1718 (ASV Segr. Stato Spagna 364D/1, ff. 12r-15r; DECODE R154)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nunzio1718", "number": 424 }, { "submitted": "2026-09-20", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nunzio1718.html", "name": "Segreteria di Stato to the Nuncio in Spain, Rome, 18 Jan 1718 (Spagna 364D/2, f. 24r-v; DECODE R155)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nunzio1718", "number": 423 }, { "submitted": "2026-09-20", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nunzio1718.html", "name": "Segreteria di Stato to the Nuncio in Spain, Rome, 8 Feb 1718 (Spagna 364D/3-4, ff. 47r-51r, 53v; DECODE R156-R157)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nunzio1718", "number": 422 }, { "submitted": "2026-09-20", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nunzio1718.html", "name": "Segreteria di Stato to the Nuncio in Spain, Rome, 16 Feb 1718 (Spagna 364D/5, ff. 63r-66v; DECODE R158)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nunzio1718", "number": 421 }, { "submitted": "2026-09-20", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nunzio1718.html", "name": "Segreteria di Stato to the Nuncio in Spain, Rome, 22 Mar 1718 (Spagna 364D/6, f. 133r; DECODE R159)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nunzio1718", "number": 420 }, { "submitted": "2026-09-20", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nunzio1718.html", "name": "Segreteria di Stato to the Nuncio in Spain, Rome, 29 Mar 1718 (Spagna 364D/7, f. 139r; DECODE R160)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nunzio1718", "number": 419 }, { "submitted": "2026-09-20", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nunzio1718.html", "name": "Segreteria di Stato to the Nuncio in Spain, Rome, 2 Apr 1718, first despatch (Spagna 364D/8, f. 145r-v; DECODE R161)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nunzio1718", "number": 418 }, { "submitted": "2026-09-20", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nunzio1718.html", "name": "Segreteria di Stato to the Nuncio in Spain, Rome, 2 Apr 1718, second despatch (Spagna 364D/9, f. 147r-v; DECODE R162)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nunzio1718", "number": 417 }, { "submitted": "2026-09-20", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nunzio1718.html", "name": "Segreteria di Stato to the Nuncio in Spain, Rome, 2 Apr 1718, second copy of the R162 despatch (Spagna 364D/10, ff. 181r-182v; DECODE R163)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nunzio1718", "number": 416 }, { "submitted": "2026-09-20", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nunzio1718.html", "name": "Segreteria di Stato to the Nuncio in Spain, Rome, 2 Apr 1718, second copy of the R161 despatch (Spagna 364D/10, f. 183r-v; DECODE R163)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nunzio1718", "number": 415 }, { "submitted": "2026-09-20", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nunzio1718.html", "name": "Segreteria di Stato to the Nuncio in Spain, Rome, 19 Apr 1718 (Spagna 364D/11, f. 235r; DECODE R164)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nunzio1718", "number": 414 }, { "submitted": "2026-09-20", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nunzio1718.html", "name": "Segreteria di Stato to the Nuncio in Spain, Rome, 17 May 1718 (Spagna 364D/12, f. 266r-v; DECODE R165)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nunzio1718", "number": 413 }, { "submitted": "2026-09-20", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nunzio1718.html", "name": "Segreteria di Stato to the Nuncio in Spain, Rome, 31 May 1718 (Spagna 364D/13, f. 286r-v; DECODE R166)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nunzio1718", "number": 412 }, { "submitted": "2026-09-20", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nunzio1718.html", "name": "Segreteria di Stato to the Nuncio in Spain, Rome, 31 May 1718, long despatch (Spagna 364D/14; DECODE R167)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nunzio1718", "number": 411 }, { "submitted": "2026-09-20", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nunzio1718.html", "name": "Segreteria di Stato to the Nuncio in Spain, Rome, 31 May 1718, duplicate 'Dup.B' of R166 (Spagna 364D/15, f. 314r-v; DECODE R168)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nunzio1718", "number": 410 }, { "submitted": "2026-09-20", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nunzio1718.html", "name": "Segreteria di Stato to the Nuncio in Spain, Rome, 9 June 1718 (Spagna 364D/16, f. 320r-v; DECODE R169)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nunzio1718", "number": 409 }, { "submitted": "2026-09-20", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nunzio1718.html", "name": "Segreteria di Stato to the Nuncio in Spain, Rome, 9 June 1718 (Spagna 364D/17, ff. 322r-324v; DECODE R170)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nunzio1718", "number": 408 }, { "submitted": "2026-09-20", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nunzio1718.html", "name": "Segreteria di Stato to the Nuncio in Spain, Rome, 21 June 1718 (Spagna 364D/18, ff. 332r-333r; DECODE R171)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nunzio1718", "number": 407 }, { "submitted": "2026-09-20", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nunzio1718.html", "name": "Segreteria di Stato to the Nuncio in Spain, Rome, 12 July 1718 (Spagna 364D/19, ff. 340r-341r; DECODE R172)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nunzio1718", "number": 406 }, { "submitted": "2026-09-20", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nunzio1718.html", "name": "Segreteria di Stato to the Nuncio in Spain, Rome, 19 July 1718 (Spagna 364D/20, ff. 344r-v; DECODE R173)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nunzio1718", "number": 405 }, { "submitted": "2026-09-20", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nunzio1718.html", "name": "Segreteria di Stato to the Nuncio in Spain, Rome, 19 July 1718, closing passage (Spagna 364D/21, f. 346r; DECODE R174)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nunzio1718", "number": 404 }, { "submitted": "2026-09-20", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nunzio1718.html", "name": "Segreteria di Stato to the Nuncio in Spain, Rome, 19 July 1718, closing passage (Spagna 364D/22, f. 348r; DECODE R175)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nunzio1718", "number": 403 }, { "submitted": "2026-09-20", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nunzio1718.html", "name": "Segreteria di Stato to the Nuncio in Spain, Rome, 19 July 1718, second copy of R173 plus a short passage (Spagna 364D/23, ff. 358r-360r; DECODE R176)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nunzio1718", "number": 402 }, { "submitted": "2026-09-20", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/nunzio1718.html", "name": "Segreteria di Stato to the Nuncio in Spain, Rome, 19 July 1718 (Spagna 364D/24, f. 362r; DECODE R177)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/nunzio1718", "number": 401 }, { "submitted": "2026-09-20", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/rakoczi1707.html", "name": "Philippe Groffey (?) to Ferenc Rákóczi II (alias Pompeio Cesoni), Słupca, 15 Oct 1707 (MNL OL G15 Caps. C. Fasc. 39 pp. 277-279; DECODE R902)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: external key matched and applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/rakoczi1707", "number": 400 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/acciaiuoli1757.html", "name": "Filippo Acciaiuoli, nuncio in Lisbon, to the Secretariat of State, 12 Sept 1758 (AAV Segr. Stato Portogallo 117/1, ff. 95r-v; DECODE R25)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/acciaiuoli1757", "number": 399 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/acciaiuoli1757.html", "name": "Filippo Acciaiuoli, Lisbon, to the Secretariat of State, 19 Sept 1758 (AAV Segr. Stato Portogallo 117/2, f. 98r; DECODE R195)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/acciaiuoli1757", "number": 398 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/acciaiuoli1757.html", "name": "Filippo Acciaiuoli, Lisbon, to the Secretariat of State, 26 Sept 1758 (AAV Segr. Stato Portogallo 117/3, f. 101r; DECODE R196)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/acciaiuoli1757", "number": 397 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/acciaiuoli1757.html", "name": "Filippo Acciaiuoli, Lisbon, to the Secretariat of State, 10 Oct 1758 (AAV Segr. Stato Portogallo 117/4, f. 103r; DECODE R197)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/acciaiuoli1757", "number": 396 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/acciaiuoli1757.html", "name": "Filippo Acciaiuoli, Lisbon, to the Secretariat of State, 31 Oct 1758 (AAV Segr. Stato Portogallo 117/5, f. 104r; DECODE R198)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/acciaiuoli1757", "number": 395 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/acciaiuoli1757.html", "name": "Filippo Acciaiuoli, Lisbon, to the Secretariat of State, 24 Oct 1758 (AAV Segr. Stato Portogallo 117/6, f. 106r; DECODE R199)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/acciaiuoli1757", "number": 394 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/acciaiuoli1757.html", "name": "Filippo Acciaiuoli, Lisbon, to the Secretariat of State, 28 Nov 1758 (AAV Segr. Stato Portogallo 117/7, ff. 115r-v; DECODE R200)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/acciaiuoli1757", "number": 393 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/acciaiuoli1757.html", "name": "Filippo Acciaiuoli, Lisbon, to the Secretariat of State, 12 Feb 1760 (AAV Segr. Stato Portogallo 117/8, f. 280r; DECODE R201)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/acciaiuoli1757", "number": 392 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/affry1757.html", "name": "Comte d'Affry to Rouillé, The Hague, 6 Jan 1757, no. 123 (KHA Prins Willem V inv. 192; DECODE R1072)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/affry1757", "number": 391 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/affry1757.html", "name": "Comte d'Affry to Rouillé, The Hague, 7 Jan 1757, no. 124 (KHA Prins Willem V inv. 192; DECODE R1076)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/affry1757", "number": 390 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/affry1757.html", "name": "Comte d'Affry to Rouillé, The Hague, 25 Jan 1757, no. 133 (KHA Prins Willem V inv. 192; DECODE R1073)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/affry1757", "number": 389 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/affry1757.html", "name": "Comte d'Affry to Rouillé, The Hague, 1 Feb 1757, no. 136 (KHA Prins Willem V inv. 192; DECODE R1064)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/affry1757", "number": 388 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/affry1757.html", "name": "Comte d'Affry to Rouillé, The Hague, 1 Apr 1757, no. 161 (KHA Prins Willem V inv. 192; DECODE R1067)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/affry1757", "number": 387 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/affry1757.html", "name": "Comte d'Affry to Rouillé, The Hague, 26 Apr 1757, no. 172 (KHA Prins Willem V inv. 192; DECODE R1068)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/affry1757", "number": 386 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/affry1757.html", "name": "Comte d'Affry to Bernis ('B.'), The Hague, 19 Jul 1757 (KHA Prins Willem V inv. 192; DECODE R1054)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/affry1757", "number": 385 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/affry1757.html", "name": "Comte d'Affry to Bernis ('B.'), The Hague, 22 Jul 1757, no. 210 (KHA Prins Willem V inv. 192; DECODE R1070)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/affry1757", "number": 384 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/affry1757.html", "name": "Comte d'Affry to 'B.', The Hague, 17 Jan 1758, no. 283, enciphered enclosure: extract of Astier's letter on a loan (KHA Prins Willem V inv. 192; DECODE R1074)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/affry1757", "number": 383 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/affry1757.html", "name": "Comte d'Affry to 'B.' (d'Usson?), The Hague, 17 Jan 1758, no. 283, covering letter (KHA Prins Willem V inv. 192; DECODE R2067)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/affry1757", "number": 382 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/buda1489.html", "name": "Maffeo da Treviglio to Ludovico Sforza, Buda, 22 November 1489 (ASMi Sforzesco 650, 1489 no. 8; Vestigia 2831)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Fable 5.1; Claude Opus 5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/buda1489", "number": 381 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/buda1489.html", "name": "Maffeo da Treviglio to Ludovico Sforza, Buda, 12 January 1490 (ASMi Sforzesco 642/1, 4; DECODE R1098)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Fable 5.1; Claude Opus 5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/buda1489", "number": 380 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/carpio1677.html", "name": "Marqués del Carpio to Baltasar de Fuenmayor, Rome, 4 Sept 1677 (AGR Brussels SEG inv. 2559; DECODE R1010)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/carpio1677", "number": 379 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/carpio1677.html", "name": "Marqués del Carpio to Baltasar de Fuenmayor, Rome, 18 Sept 1677 (AGR Brussels SEG inv. 2559; DECODE R1011)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/carpio1677", "number": 378 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/carpio1677.html", "name": "Marqués del Carpio to Baltasar de Fuenmayor, Rome, 25 Sept 1677 (AGR Brussels SEG inv. 2559; DECODE R1009)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/carpio1677", "number": 377 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/carpio1677.html", "name": "Marqués del Carpio to Baltasar de Fuenmayor, Rome, 2 Oct 1677 (AGR Brussels SEG inv. 2559; DECODE R1006)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/carpio1677", "number": 376 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/carpio1677.html", "name": "Marqués del Carpio to Baltasar de Fuenmayor, Rome, 9 Oct 1677 (AGR Brussels SEG inv. 2559; DECODE R1007)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/carpio1677", "number": 375 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/carpio1677.html", "name": "Marqués del Carpio to Baltasar de Fuenmayor, Rome, 16 Oct 1677 (AGR Brussels SEG inv. 2559; DECODE R1008)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/carpio1677", "number": 374 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/carpio1677.html", "name": "Marqués del Carpio to Baltasar de Fuenmayor, Rome, 13 Nov 1677 (AGR Brussels SEG inv. 2559; DECODE R1004)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/carpio1677", "number": 373 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/carpio1677.html", "name": "Marqués del Carpio to Baltasar de Fuenmayor, Rome, 20 Nov 1677 (AGR Brussels SEG inv. 2559; DECODE R1005)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/carpio1677", "number": 372 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/carpio1677.html", "name": "Marqués del Carpio to Baltasar de Fuenmayor, Rome, 4 Dec 1677 (AGR Brussels SEG inv. 2559; DECODE R1002)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/carpio1677", "number": 371 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/carpio1677.html", "name": "Marqués del Carpio to Baltasar de Fuenmayor, Rome, 11 Dec 1677 (AGR Brussels SEG inv. 2559; DECODE R1003)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/carpio1677", "number": 370 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/kauderbach1754.html", "name": "Johann Heinrich Kauderbach, The Hague, to Count Brühl, Dresden, 23 Dec 1754 (KHA Prins Willem V inv. 201; DECODE R2078)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/kauderbach1754", "number": 369 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/kauderbach1754.html", "name": "Johann Heinrich Kauderbach, The Hague, to Count Brühl, Dresden, 20 Jun 1755 (KHA Prins Willem V inv. 201; DECODE R1958)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/kauderbach1754", "number": 368 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/kauderbach1754.html", "name": "Johann Heinrich Kauderbach, The Hague, to Count Brühl, Dresden, 6 Jul 1755 (KHA Prins Willem V inv. 201; DECODE R2079)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/kauderbach1754", "number": 367 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/kauderbach1754.html", "name": "Johann Heinrich Kauderbach, The Hague, to Count Brühl, Dresden, 22 Jul 1755 (KHA Prins Willem V inv. 201; DECODE R2080)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/kauderbach1754", "number": 366 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/kauderbach1754.html", "name": "Johann Heinrich Kauderbach, The Hague, to Count Brühl, Dresden, 5 Aug 1755 (KHA Prins Willem V inv. 201; DECODE R1959)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/kauderbach1754", "number": 365 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/kauderbach1754.html", "name": "Johann Heinrich Kauderbach, The Hague, to Count Brühl, Dresden, 12 Aug 1755 (KHA Prins Willem V inv. 201; DECODE R2081)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/kauderbach1754", "number": 364 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/kauderbach1754.html", "name": "Johann Heinrich Kauderbach, The Hague, to Count Brühl, Dresden, 15 Aug 1755 (KHA Prins Willem V inv. 201; DECODE R2082)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/kauderbach1754", "number": 363 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/kauderbach1754.html", "name": "Johann Heinrich Kauderbach, The Hague, to Count Brühl, Dresden, 29 Sep 1755 (KHA Prins Willem V inv. 201; DECODE R1044)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/kauderbach1754", "number": 362 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/kauderbach1754.html", "name": "Johann Heinrich Kauderbach, The Hague, to Count Brühl, Dresden, 25 May 1756 (KHA Prins Willem V inv. 201; DECODE R1043)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/kauderbach1754", "number": 361 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/kurtz1639.html", "name": "Kurz von Senftenau to Trauttmansdorff, Hamburg, 17 Jan 1639 (SOA Plzeň, RA Trauttmansdorff inv. 200 kart. 9; DECODE R3811)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/kurtz1639", "number": 360 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/kurtz1639.html", "name": "Kurz von Senftenau to Trauttmansdorff, Hamburg, 27 Jan 1639, memorandum (SOA Plzeň, RA Trauttmansdorff inv. 200 kart. 9; DECODE R3813)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/kurtz1639", "number": 359 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/kurtz1639.html", "name": "Kurz von Senftenau to Trauttmansdorff, Hamburg, 3 Feb 1639 (DECODE dates 1638) (SOA Plzeň, RA Trauttmansdorff inv. 200 kart. 9; DECODE R3812)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/kurtz1639", "number": 358 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/kurtz1639.html", "name": "Kurz von Senftenau to Ferdinand III, Hamburg, 6 Feb 1639 (SOA Plzeň, RA Trauttmansdorff inv. 200 kart. 9; DECODE R3815)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/kurtz1639", "number": 357 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/kurtz1639.html", "name": "Kurz von Senftenau to Trauttmansdorff, Hamburg, 10 Feb 1639 (endorsed), memorandum (SOA Plzeň, RA Trauttmansdorff inv. 200 kart. 9; DECODE R4625)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/kurtz1639", "number": 356 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/kurtz1639.html", "name": "Kurz von Senftenau to Trauttmansdorff, Hamburg, 13 Feb 1639 (SOA Plzeň, RA Trauttmansdorff inv. 200 kart. 9; DECODE R4645)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/kurtz1639", "number": 355 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/kurtz1639.html", "name": "Kurz von Senftenau to 'Hochedler Herr', undated 1639 (SOA Plzeň, RA Trauttmansdorff inv. 200 kart. 9; DECODE R3814)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/kurtz1639", "number": 354 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/kurtz1639.html", "name": "Kurz von Senftenau to Count Schwarzenberg, 8 Apr 1639, copy (SOA Plzeň, RA Trauttmansdorff inv. 200 kart. 9; DECODE R4734)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/kurtz1639", "number": 353 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/kurtz1639.html", "name": "Kurz von Senftenau to Trauttmansdorff, Glückstadt, 14 Apr 1639 (SOA Plzeň, RA Trauttmansdorff inv. 200 kart. 9; DECODE R4736)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/kurtz1639", "number": 352 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/morosini1588.html", "name": "Gian Francesco Morosini, nuncio in France, to Rome, 1587 (AAV Segr. Stato Francia 18/3, ff. 233r-235v; DECODE R17)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/morosini1588", "number": 351 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/morosini1588.html", "name": "Morosini to Cardinal Montalto, 10 Aug [1588], duplicate (AAV Segr. Stato Francia 22/1; DECODE R18)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/morosini1588", "number": 350 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/morosini1588.html", "name": "Morosini to Cardinal Montalto, 24 Aug [1588], duplicate (AAV Segr. Stato Francia 22/2; DECODE R19)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/morosini1588", "number": 349 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/morosini1588.html", "name": "Morosini to Cardinal Montalto, 9 Sept [1588] (AAV Segr. Stato Francia 22/3; DECODE R20)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/morosini1588", "number": 348 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/morosini1588.html", "name": "Morosini to Cardinal Montalto, n.d. [Sept 1588] (AAV Segr. Stato Francia 22/4; DECODE R21)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/morosini1588", "number": 347 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/morosini1588.html", "name": "Morosini to Cardinal Montalto, n.d. [Sept 1588], duplicate (AAV Segr. Stato Francia 22/5; DECODE R22)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/morosini1588", "number": 346 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/morosini1588.html", "name": "Morosini to Cardinal Montalto, n.d., fragment (AAV Segr. Stato Francia 22/6; DECODE R27)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/morosini1588", "number": 345 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/morosini1588.html", "name": "Morosini to Cardinal Montalto, [early] Oct [1588], duplicate (AAV Segr. Stato Francia 22/7; DECODE R28)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/morosini1588", "number": 344 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/morosini1588.html", "name": "Morosini to Cardinal Montalto, 10 Oct [1588], duplicate (AAV Segr. Stato Francia 22/8; DECODE R29)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/morosini1588", "number": 343 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/morosini1588.html", "name": "Morosini to Cardinal Montalto, Blois, 3 Oct [1588] (AAV Segr. Stato Francia 22/9; DECODE R30)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/morosini1588", "number": 342 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/morosini1588.html", "name": "Morosini to Cardinal Montalto, Blois, 23 Oct [1588] (AAV Segr. Stato Francia 22/10; DECODE R31)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/morosini1588", "number": 341 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/morosini1588.html", "name": "Morosini to Cardinal Montalto, 24 Oct [1588] (AAV Segr. Stato Francia 22/11; DECODE R32)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/morosini1588", "number": 340 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/morosini1588.html", "name": "Morosini to Cardinal Montalto, n.d. [Oct-Nov 1588] (AAV Segr. Stato Francia 22/12; DECODE R33)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/morosini1588", "number": 339 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/morosini1588.html", "name": "Morosini to Cardinal Montalto, n.d. [Nov 1588] (AAV Segr. Stato Francia 22/13; DECODE R34)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/morosini1588", "number": 338 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/morosini1588.html", "name": "Enciphered Spanish copy of the Spanish ambassador's memorandum to the Queen Mother (Philip II's answer), enclosed by Morosini, n.d. [1588] (AAV Segr. Stato Francia 22/14; DECODE R35)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/morosini1588", "number": 337 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/morosini1588.html", "name": "Morosini to Cardinal Montalto, 10 Nov [1588], duplicate (AAV Segr. Stato Francia 22/15; DECODE R36)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/morosini1588", "number": 336 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/morosini1588.html", "name": "Morosini to Cardinal Montalto, 21 Nov [1588], duplicate (AAV Segr. Stato Francia 22/16; DECODE R37)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/morosini1588", "number": 335 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/morosini1588.html", "name": "Morosini to Cardinal Montalto, n.d. [late Nov-Dec 1588] (AAV Segr. Stato Francia 22/17; DECODE R38)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/morosini1588", "number": 334 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/morosini1588.html", "name": "Morosini to Cardinal Montalto, 8 Dec [1588], duplicate (AAV Segr. Stato Francia 22/18; DECODE R39)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/morosini1588", "number": 333 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/morosini1588.html", "name": "Morosini to Cardinal Montalto, [Blois], 'li 8 X[bre]' (8 Dec 1588?), duplicate (AAV Segr. Stato Francia 22/19; DECODE R40)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/morosini1588", "number": 332 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/morosini1588.html", "name": "Morosini to Cardinal Montalto, n.d. [Blois, Dec 1588] (AAV Segr. Stato Francia 22/20; DECODE R41)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/morosini1588", "number": 331 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/morosini1588.html", "name": "Morosini to Cardinal Montalto, n.d. [Blois, Dec 1588] (AAV Segr. Stato Francia 22/21; DECODE R42)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/morosini1588", "number": 330 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/morosini1588.html", "name": "Morosini to Cardinal Montalto, Blois, 23 Dec [1588] (AAV Segr. Stato Francia 22/22; DECODE R43)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/morosini1588", "number": 329 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/morosini1588.html", "name": "Morosini to Cardinal Montalto, [Blois], 24 Dec [1588], duplicate (AAV Segr. Stato Francia 22/23; DECODE R44)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/morosini1588", "number": 328 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/morosini1588.html", "name": "Morosini to Cardinal Montalto, n.d. [Blois, Jan 1589] (AAV Segr. Stato Francia 22/24; DECODE R45)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/morosini1588", "number": 327 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/morosini1588.html", "name": "Morosini to Cardinal Montalto, Blois, 24 Jan 1589, duplicate (AAV Segr. Stato Francia 22/25; DECODE R46)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/morosini1588", "number": 326 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/morosini1588.html", "name": "Morosini to Cardinal Montalto, n.d. [Blois, Jan 1589] (AAV Segr. Stato Francia 22/26; DECODE R47)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/morosini1588", "number": 325 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/morosini1588.html", "name": "Morosini to Cardinal Montalto, Blois, 30 and 31 Jan 1589 (AAV Segr. Stato Francia 22/27; DECODE R48)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/morosini1588", "number": 324 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/morosini1588.html", "name": "Morosini to Cardinal Montalto, n.d. [early 1589], fragment (AAV Segr. Stato Francia 22/28; DECODE R49)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/morosini1588", "number": 323 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/morosini1588.html", "name": "Morosini to Cardinal Montalto, Tours, 27 March 1589 (AAV Segr. Stato Francia 22/30; DECODE R51)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/morosini1588", "number": 322 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/morosini1588.html", "name": "Morosini to Cardinal Montalto, Tours, 6 April 1589 (AAV Segr. Stato Francia 22/31; DECODE R52)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/morosini1588", "number": 321 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/morosini1588.html", "name": "Morosini to Cardinal Montalto, Moulins, 11 June 1589 (AAV Segr. Stato Francia 22/34; DECODE R55)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/morosini1588", "number": 320 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/morosini1588.html", "name": "Morosini to Cardinal Montalto, Moulins, 16(?) June 1589 (AAV Segr. Stato Francia 22/35; DECODE R56)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/morosini1588", "number": 319 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/morosini1588.html", "name": "Morosini to Cardinal Montalto, Moulins, n.d. [c. 10 June 1589] (AAV Segr. Stato Francia 22/36; DECODE R57)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/morosini1588", "number": 318 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/morosini1588.html", "name": "Morosini to Cardinal Montalto, Moulins, 5 July 1589, duplicate (AAV Segr. Stato Francia 22/37; DECODE R58)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/morosini1588", "number": 317 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/sadoleto1482.html", "name": "Nicolò Sadoleto to Ercole I d'Este, Pozsony, 15 July 1482 (ASMo Ambasciatori Ungheria b. 1/9 no. 7; DECODE R1101)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sadoleto1482", "number": 316 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/sadoleto1482.html", "name": "Nicolò Sadoleto to Ercole I d'Este, Pozsony, 16 July 1482 (ASMo Ambasciatori Ungheria b. 1/9 no. 8; DECODE R1102)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sadoleto1482", "number": 315 }, { "submitted": "2026-09-19", "solver": "Arya Sanketbhai Patel", "source": "https://dbourdeau.github.io/cyphersolver/sessa1593.html", "name": "Duke of Sessa to Diego de Ibarra, Rome, 11 Mar 1593 (BnF fr. 3983 no. 79, f. 162)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sessa1593", "number": 314 }, { "submitted": "2026-09-19", "solver": "Arya Sanketbhai Patel", "source": "https://dbourdeau.github.io/cyphersolver/sessa1593.html", "name": "Duke of Sessa to Philip II, Rome, 30 June 1593, copy (BnF fr. 3984 no. 47, f. 108)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sessa1593", "number": 313 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/soria1523.html", "name": "Lope de Soria to Charles V, Genoa, June 1523, key A (RAH Salazar A-28 ff. 248-249; DECODE R9488)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/soria1523", "number": 312 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/soria1523.html", "name": "Lope de Soria to Charles V, Genoa, June 1523, duplicate, key A (RAH Salazar A-28 ff. 250-251; DECODE R9489)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/soria1523", "number": 311 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/soria1523.html", "name": "Lope de Soria to Charles V, Genoa, June 1523, triplicate, key A (RAH Salazar A-28 ff. 252-253; DECODE R9490)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/soria1523", "number": 310 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/soria1523.html", "name": "Lope de Soria to Charles V, Genoa, July 1523, key A with key-B closing (RAH Salazar A-28 ff. 443-448; DECODE R9492)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/soria1523", "number": 309 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/soria1523.html", "name": "Lope de Soria to Charles V, Genoa, July 1523, duplicate, key A (RAH Salazar A-28 ff. 449-455; DECODE R9493)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/soria1523", "number": 308 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/soria1523.html", "name": "Lope de Soria to Gattinara, Genoa, 20 Jul 1523, key B (RAH Salazar A-28 ff. 440-442; DECODE R9491)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from external plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/soria1523", "number": 307 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/soria1523.html", "name": "Lope de Soria to Charles V, Genoa, 13 Aug 1523, key B (RAH Salazar A-28 ff. 577-579; DECODE R9497)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from external plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/soria1523", "number": 306 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/soria1523.html", "name": "Lope de Soria to Charles V, Genoa, 13 Aug 1523, duplicate, key B (RAH Salazar A-28 ff. 581-584; DECODE R9498)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from external plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/soria1523", "number": 305 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau; WAINUT", "source": "https://dbourdeau.github.io/cyphersolver/sp106r927.html", "name": "Unknown writer (\"Nicle\"?) to \"Monsieur\", Nancy, December, year unknown, 17th c. (TNA SP 106/10 ff. 241-243; DECODE R927)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sp106r927", "number": 304 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/sp106r929.html", "name": "Henrietta Maria's household to \"Sir\", Paris, 26 Jan 1646 (TNA SP 106/10 f. 247; DECODE R929)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sp106r929", "number": 303 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/windischgraetz1720.html", "name": "Charles VI → Count Leopold Viktorin Windischgrätz, Vienna, 3 Feb 1720 (SOA Plzeň RA Windischgrätz inv. 694 karton 5, DECODE R5019 autograph; inv. 5 book 5 pp. 401–404, DECODE R5020 copy)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/windischgraetz1720", "number": 302 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/windischgraetz1720b.html", "name": "Charles VI → Count Leopold Viktorin Windischgrätz, Vienna, 13 Apr 1720 (SOA Plzeň RA Windischgrätz inv. 694 karton 5, DECODE R5021 autograph; inv. 5 book 5 pp. 404–407, DECODE R5022 copy)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/windischgraetz1720b", "number": 301 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/windischgraetz1720b.html", "name": "Charles VI → Count Leopold Viktorin Windischgrätz, Vienna, 24 Jul 1720 (SOA Plzeň RA Windischgrätz inv. 5 book 5 pp. 407–409; DECODE R5023)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/windischgraetz1720b", "number": 300 }, { "submitted": "2026-09-19", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/windischgraetz1720b.html", "name": "Charles VI → Count Leopold Viktorin Windischgrätz (Cambrai), Vienna, 11 Apr 1722 (SOA Plzeň RA Windischgrätz inv. 5 book 5 pp. 414–416; DECODE R5024)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/windischgraetz1720b", "number": 299 }, { "submitted": "2026-09-18", "solver": "Carter Church", "source": "https://www.persee.fr/doc/rharm_0035-3299_1969_num_25_4_8686", "name": "Letter to Marmont, 1809", "type": "Homophonic substitution", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "transcription, analysis, decipherment", "agents": "Not reported", "extent": "Complete", "documentation": "https://carter.church/writeups/the-letter-to-marmont/", "number": 298 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/adrian1521.html", "name": "Adrian of Utrecht, the Admiral and the Constable of Castile to Charles V, Vitoria, 30 Dec 1521 (AGS Estado leg. 8 no. 150)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from external plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/adrian1521", "number": 297 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/bordeaux1653.html", "name": "Antoine de Bordeaux-Neufville to Brienne, London, 30 May 1653 NS (BL Add MS 4200 ff. 88–90; DECODE R8390)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: external key matched and applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/bordeaux", "number": 296 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/conti1649.html", "name": "Prince de Conti to (probably) the marquis de Noirmoutier, Paris, 26 Mar 1649 (BnF fr. 3854 no. 41, ff. 113r–v)", "type": "Polyphonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/conti1649", "number": 295 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/conti1649.html", "name": "Prince de Conti to (probably) the marquis de Noirmoutier, Paris, 27 Mar 1649 (BnF fr. 3854 no. 42, f. 115r)", "type": "Polyphonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/conti1649", "number": 294 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/gramont1529.html", "name": "Gabriel de Gramont, bishop of Tarbes, to Anne de Montmorency, Rome, 11 Oct 1529 (BnF fr. 3091 no. 23, ff. 45r-47v)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/gramont1529", "number": 293 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/gramont1530.html", "name": "Gabriel, cardinal de Gramont, to Anne de Montmorency, Rome, 21 July 1530 (BnF fr. 3071 no. 7, f. 17)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/gramont1530", "number": 292 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/heidelberg597.html", "name": "Alchymey teuczsch, alchemical recipe book, East Bavaria, 1426 (Heidelberg UB Cod. Pal. germ. 597; DECODE R2876)", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from external plaintext; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/heidelberg597", "number": 291 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/laigue1649.html", "name": "Prince de Conti to Geoffroy, marquis de Laigue (envoy to Archduke Leopold Wilhelm), Paris, mémoire, 5 Mar 1649 (BnF fr. 3854 no. 43, ff. 117r–120r)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/laigue1649", "number": 290 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/langeac1529.html", "name": "Jean de Langeac, bishop of Avranches, to Anne de Montmorency, Venice, 14 Jan 1529 (BnF fr. 3083 no. 8, ff. 20–21)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/langeac1529", "number": 289 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/orbais.html", "name": "Baron (secretary of Cardinal Pellevé) to Jean de Piles, abbé d'Orbais, League council in Paris, Rome, 23 Aug 1589 (BnF fr. 3413 no. 62, ff. 126r-127v)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/orbais", "number": 288 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/pelissier1592.html", "name": "A. Pelissier to Pierre Jeannin, Burgos, 13 Sept 1592 (BnF fr. 3982 no. 22, ff. 46r-50r)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/pelissier1592", "number": 287 }, { "submitted": "2026-09-18", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/ranzo1528.html", "name": "Hieronimo Ranzo, Madrid, 27 Mar 1528, letter 1 (BnF fr. 2988 ff. 2r-v)", "type": "Code", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/ranzo1528", "number": 286 }, { "submitted": "2026-09-18", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/ranzo1528.html", "name": "Hieronimo Ranzo, Madrid, 27 Mar 1528, duplicate of letter 1 deciphered by Paolo Rosson (BnF fr. 3019 no. 27 ff. 73r-74r)", "type": "Code", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/ranzo1528", "number": 285 }, { "submitted": "2026-09-18", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/ranzo1528.html", "name": "Hieronimo Ranzo to his son, Madrid, March 1528, letter 2 (BnF fr. 2988 ff. 9r-10v, DECODE R1894; copy fr. 20506 ff. 136-138, DECODE R4450)", "type": "Code", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/ranzo1528", "number": 284 }, { "submitted": "2026-09-18", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/ranzo1528.html", "name": "[Hieronimo Ranzo] to 'Garbino', Madrid, 11 Apr 1528 (BnF fr. 3022 no. 20 ff. 44r-46v; copy Clair. 327 ff. 279-280)", "type": "Code", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/ranzo1528", "number": 283 }, { "submitted": "2026-09-18", "solver": "George Lasry", "source": "https://dbourdeau.github.io/cyphersolver/ranzo1528.html", "name": "Ranzo code letter 5, undated (BnF fr. 6638 pp. 67-70)", "type": "Code", "model": "Combination", "version": "Claude Opus 5.5; GPT-6 Astra", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/ranzo1528", "number": 282 }, { "submitted": "2026-09-18", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sessa1524.html", "name": "Duke of Sessa to Charles V, Rome, 18 Apr 1524, with duplicate (RAH Salazar A-31 ff. 128-131; DECODE R9877, R9878)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sessa1524", "number": 281 }, { "submitted": "2026-09-18", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sessa1524.html", "name": "Duke of Sessa to Charles V, Rome, 14 Apr 1524 (RAH Salazar A-31 ff. 79-86; DECODE R9873)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sessa1524", "number": 280 }, { "submitted": "2026-09-18", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sessa1524.html", "name": "Duke of Sessa to Charles V, Rome, 24 Jul 1524 (BNE MSS/20214/52-7)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sessa1524", "number": 279 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/soglia1848.html", "name": "Cardinal Soglia to nuncio Viale Prelà at Innsbruck, Rome, 15 Jun 1848 (printed in L'Italia del Popolo no. 40, 30 Jun 1848)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/soglia1848", "number": 278 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Changchun → Toyama, Reinanzaka [ting], 31 July 1914 (JACAR B03050087500 p. 10, fr. 0121)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 277 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo → Junzaburo, Shanghai, 10 June 1915 (JACAR B03050087700 p. 46, fr. 0266)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 276 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Shanghai → Rosamonde, Tokyo, 11 June 1915 (JACAR B03050087700 p. 45, fr. 0265)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 275 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo → Junzaburo, Shanghai, 19 February 1916 (JACAR B03050088000 p. 14, fr. 0293)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 274 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo → Junzaburo, Shanghai (indicator 8659), 24 February 1916 (JACAR B03050088000 p. 37, fr. 0316)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 273 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo → Junzaburo, Shanghai (Ting), 28 February 1916 (JACAR B03050088000 p. 30, fr. 0309)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 272 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Shanghai → Rosamonda, Tokyo (indicator 47), 1 March 1916 (JACAR B03050088000 p. 39, fr. 0318)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 271 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Shanghai → Rosamonda, Tokyo, 9 March 1916 (JACAR B03050088100 p. 11, fr. 0346)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 270 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Shanghai → Rosamonda, Tokyo, 17 March 1916 (JACAR B03050088200 p. 20, fr. 0402)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 269 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Shanghai → Rosamonda, Tokyo, 18 March 1916 (JACAR B03050088200 p. 10, fr. 0392b)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 268 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo → Junzaburo, Shanghai (Ting, two forms), 19 March 1916 (JACAR B03050088200 p. 13, fr. 0395)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 267 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Shanghai → Rosamonda, Tokyo, 20 March 1916 (JACAR B03050088200 p. 10, fr. 0392a)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 266 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Shanghai → Rosamonda, Tokyo, 22 March 1916 (JACAR B03050088200 p. 48, fr. 0430b)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 265 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Shanghai → Tokyo (Rosamonde), 25 March 1916 (JACAR B03050088300, fr. 0468)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 264 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo → Shanghai (Junzaburo), 26 March 1916 (JACAR B03050088300, fr. 0465a)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 263 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Shanghai → Tokyo (Rosamonde), 27 March 1916 (JACAR B03050088300, fr. 0460)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 262 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo → Shanghai (Junzaburo), 30 March 1916 (JACAR B03050088300, fr. 0473a)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 261 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo → Shanghai (Junzaburo), 30 March 1916 (JACAR B03050088300, fr. 0475)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 260 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo → Shanghai (Junzaburo), 31 March 1916 (JACAR B03050088300, fr. 0485)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 259 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo → Shanghai (Junzaburo), 31 March 1916 (JACAR B03050088300, fr. 0486a)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 258 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Shanghai → Tokyo (Rosamonda), 3 April 1916 (JACAR B03050088300, fr. 0489)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 257 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Shanghai → Tokyo (Rosamonde), 4 April 1916 (JACAR B03050088300, fr. 0495)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 256 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Shanghai → Rosamonde (0152), 10 April 1916 (JACAR B03050088500 p. 7, fr. 0557)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 255 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo → urgent Junzaburo Shanghai, 11 April 1916 (JACAR B03050088500 p. 10, fr. 0560a)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 254 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Shanghai (0152) → Rosamonde, 12 April 1916 (JACAR B03050088500 p. 18, fr. 0568b)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 253 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Shanghai (0131) → Rosamonde, 14 April 1916 (JACAR B03050088500 p. 30, fr. 0580)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 252 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo (中山) → Junzaburo Shanghai, 15 April 1916 (JACAR B03050088500 p. 44, fr. 0594a)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 251 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo (中山) → Junzaburo Shanghai, 16 April 1916 (JACAR B03050088500 p. 44, fr. 0594b)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 250 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Shanghai (078) → Rosamonde, 18 April 1916 (JACAR B03050088500 p. 54, fr. 0604a)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 249 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo (中山) → Junzaburo Shanghai, 19 April 1916 (JACAR B03050088500 p. 51, fr. 0601b)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 248 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Shanghai (018) → Rosamonde, 20 April 1916 (JACAR B03050088600 p. 3, fr. 0607b)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 247 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Shanghai (0100) → Rosamonde, 21 April 1916 (JACAR B03050088600 p. 13, fr. 0617)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 246 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo (中山) → Junzaburo Shanghai, 22 April 1916 (JACAR B03050088600 p. 20, fr. 0624a)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 245 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Shanghai (053) → Rosamonde, 23 April 1916 (JACAR B03050088600 p. 27, fr. 0631b)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 244 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo (中山) → Junzaburo Shanghai, 25 April 1916 (JACAR B03050088600 p. 30, fr. 0634a)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 243 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Shanghai (053) → Rosamonde, 25 April 1916 (JACAR B03050088600 p. 32, fr. 0636b)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 242 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo → Shanghai (Junzaburo), 3 May 1916 (JACAR B03050089000 p. 12, fr. 0017)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 241 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo → Shanghai (Junzaburo), 3 May 1916 (JACAR B03050089000 p. 25, fr. 0030b)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 240 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo → Shanghai (Junzaburo), 4 May 1916 (JACAR B03050089000 p. 17, fr. 0022b)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 239 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo → Shanghai (Junzaburo), 4 May 1916 (JACAR B03050089000 p. 19, fr. 0024)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 238 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Shanghai → Tokyo (Linwailuk), 5 May 1916 (JACAR B03050089000 p. 26, fr. 0031b)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 237 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo → Shanghai (Junzaburo), 6 May 1916 (JACAR B03050089000 p. 25, fr. 0030a)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 236 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Shanghai → Tokyo (Linwailuk), 6 May 1916 (JACAR B03050089000 p. 26, fr. 0031a)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 235 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo → Shanghai (Junzaburo), 8 May 1916 (JACAR B03050089000 p. 29, fr. 0034)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 234 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Shanghai → Tokyo (Linwailuk), 8 May 1916 (JACAR B03050089000 p. 30, fr. 0035)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 233 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo → Shanghai (Junzaburo), 10 May 1916 (JACAR B03050089000 p. 37, fr. 0042a)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 232 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Shanghai → Tokyo (Linwailuk), 15 May 1916 (JACAR B03050089000 p. 49, fr. 0054a)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 231 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo → Shanghai (Junzaburo), 15 May 1916 (JACAR B03050089000 p. 51, fr. 0056)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 230 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo → Shanghai (Junzaburo), 17 May 1916 (JACAR B03050089000 p. 54, fr. 0059a)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 229 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo → Shanghai (Junzaburo), 17 May 1916 (JACAR B03050089100, fr. 0061)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 228 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo → Shanghai (Junzaburo), 20 May 1916 (JACAR B03050089100, fr. 0069)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 227 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo → Shanghai (Junzaburo), 21 May 1916 (JACAR B03050089100, fr. 0071)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 226 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo → Shanghai (Junzaburo), 23 May 1916 (JACAR B03050089100, fr. 0075)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 225 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo → Shanghai (Junzaburo), 25 May 1916 (JACAR B03050089100, fr. 0087)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 224 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo (Xie Chi) → Shanghai (Junzaburo), No. 01425, 26 May 1916 (JACAR B03050089100, fr. 0092–0093)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 223 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo → Shanghai (Junzaburo), 31 May 1916 (JACAR B03050089200 p. 13, fr. 0130a)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 222 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo → Shanghai (Junzaburo), 31 May 1916 (JACAR B03050089200 p. 15, fr. 0132)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 221 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo → Shanghai (Junzaburo), 1 June 1916 (JACAR B03050089200 p. 14, fr. 0131a)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 220 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo → Shanghai (Junzaburo), 3 June 1916 (JACAR B03050089200 p. 33, fr. 0150a)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 219 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo → Shanghai (Junzaburo), 4 June 1916 (JACAR B03050089200 p. 33, fr. 0150b)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 218 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo → Shanghai (Junzaburo), 5 June 1916 (JACAR B03050089200 p. 34, fr. 0151a)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 217 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo → Shanghai (Junzaburo), 5 June 1916 (JACAR B03050089200 p. 42, fr. 0159a)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 216 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo → Shanghai (Junzaburo), 7 June 1916 (JACAR B03050089200 p. 39, fr. 0156)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 215 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo → Shanghai (Junzaburo), 15 June 1916 (JACAR B03050089400 p. 53, fr. 0263)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 214 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Shanghai → Tokyo (Linwailuk), 21 June 1916 (JACAR B03050089800 p. 53, fr. 0328)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 213 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Qingdao → Rosamonde, Tokyo (Seitō, indicator 33), 19 March 1916 (JACAR B03050088200 p. 12, fr. 0394)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 212 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Qingdao (Seitō) → Tokyo (Rosamonde), 28 March 1916 (JACAR B03050088300, fr. 0459)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 211 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo (Aoyama) → Qingdao (Kayano), 30 March 1916 (JACAR B03050088300, fr. 0473b)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 210 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Qingdao (Seitō) → Tokyo (Rosamonde), 30 March 1916 (JACAR B03050088300, fr. 0476)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 209 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Qingdao (Seitō) → Tokyo (Rosamonde), 1 April 1916 (JACAR B03050088300, fr. 0490b)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 208 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo (Aoyama) → Qingdao (Kayano), 4 April 1916 (JACAR B03050088300, fr. 0492)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 207 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Aoyama (中山) → Kayano, 4 Yahatamachi, Seito, 11 April 1916 (JACAR B03050088500 p. 9, fr. 0559b)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 206 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Seito → Rosamonde (via Aoyama), 11 April 1916 (JACAR B03050088500 p. 10, fr. 0560b)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 205 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Seito (24) → Rosamonde, 12 April 1916 (JACAR B03050088500 p. 18, fr. 0568a)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 204 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Seito (94) → Rosamonde, 19 April 1916 (JACAR B03050088500 p. 54, fr. 0604b)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 203 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Seito (109) → Rosamonde, 19 April 1916 (JACAR B03050088600 p. 3, fr. 0607a)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 202 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Aoyama (中山) → Kayano, 4 Yahatamachi, Seito, 20 April 1916 (JACAR B03050088500 p. 52, fr. 0602b)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 201 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Seito (118) → Rosamonde (via Aoyama), 20 April 1916 (JACAR B03050088600 p. 11, fr. 0615)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 200 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Aoyama (中山) → Kayano, Yahatamachi, Seito, 21 April 1916 (JACAR B03050088600 p. 10, fr. 0614)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 199 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Aoyama (中山) → Kayano, 4 Yahatamachi, Seito, 22 April 1916 (JACAR B03050088600 p. 21, fr. 0625b)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 198 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Aoyama (中山) → Kayano, 4 Yahatamachi, Seito, 24 April 1916 (JACAR B03050088600 p. 31, fr. 0635a)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 197 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Seito (27) → Rosamonde, 25 April 1916 (JACAR B03050088600 p. 32, fr. 0636a)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 196 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Qingdao → Tokyo (Rosamonde), 26 April 1916 (JACAR B03050089000 p. 3, fr. 0008)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 195 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Seito (20) → Rosamonde, 26 April 1916 (JACAR B03050088600 p. 38, fr. 0642a)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 194 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo (頭山滿) → Konglipo, Manila, 6 January 1915 (JACAR B03050087600 p. 2, fr. 0164)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 193 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Manila → Rosamonde, Tokyo, 23 March 1916 (JACAR B03050088200 p. 48, fr. 0430a)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 192 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo → Manila (Konglipo), 24 March 1916 (JACAR B03050088300, fr. 0470)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 191 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo → Manila (Konglipo), 27 March 1916 (JACAR B03050088300, fr. 0445)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 190 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Manila → Tokyo (Rosamonde), 27 March 1916 (JACAR B03050088300, fr. 0461b)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 189 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Manila → Tokyo (Rosamonde), 31 March 1916 (JACAR B03050088300, fr. 0478a)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 188 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Manila (65, compac) → Rosamonde, 12 April 1916 (JACAR B03050088500 p. 16, fr. 0566)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 187 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Manila → Tokyo (Tōyama), 3 May 1916 (JACAR B03050089000 p. 11, fr. 0016)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 186 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "San Francisco (Lin Sen) → Sunwen c/o Toyama, 18 September 1914 (JACAR B03050087500 p. 17, fr. 0128)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 185 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "San Francisco → Sunwen, Tokyo, 4 October 1915 (JACAR B03050087700 p. 52, fr. 0274)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 184 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "San Francisco → Dr Sunwen, Tokyo, 24 March 1916 (JACAR B03050088200 p. 54, fr. 0436)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 183 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "San Francisco (186) → Dr Sunwen 109 Harajuku, April 1916 (JACAR B03050088600 p. 26, fr. 0630b)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 182 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Tokyo (中山) → Youngchina San Francisco, 22 April 1916 (JACAR B03050088600 p. 20, fr. 0624b)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 181 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Honolulu → Tokyo (Rosamonde), 30 April 1916 (JACAR B03050089000 p. 6, fr. 0011b)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 180 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "Honolulu → Tokyo, 16 May 1916 (JACAR B03050089000 p. 49, fr. 0054b)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 179 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Sun (Tokyo) → Yamada Junzaburō, Shanghai, 28 Mar 1916 (JACAR B03050088300 fr. 0446)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 178 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Honolulu No. 53 → Rosamonde, Tokyo, 28 Mar 1916 (JACAR B03050088300 fr. 0459 upper; tentative key)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 177 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Sun (Tokyo) → Konglipo, Manila, 27 Mar 1916 (JACAR B03050088300 fr. 0462)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 176 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Xu Chongzhi, Shanghai No. 058 → Rosamonde, Tokyo, 26 Mar 1916 (JACAR B03050088300 fr. 0463 upper)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 175 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Chen Qimei, Shanghai No. 070 → Rosamonde, Tokyo, 26 Mar 1916 (JACAR B03050088300 fr. 0463–0464)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 174 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Sun (Tokyo) → Konglipo, Manila, 26 Mar 1916 (JACAR B03050088300 fr. 0465 lower)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 173 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Manila No. 75 → Rosamonde, Tokyo, 26 Mar 1916 (JACAR B03050088300 fr. 0466)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 172 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Qingdao (Seitō) No. 56 → Rosamonde, Tokyo, 25 Mar 1916 (JACAR B03050088300 fr. 0467)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 171 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Sun (Tokyo) → Junzaburo, Shanghai, No. 07035, 25 Mar 1916 (JACAR B03050088300 fr. 0469a)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 170 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Sun (Tokyo) → Youngchina, San Francisco, 25 Mar 1916 (JACAR B03050088300 fr. 0469b)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 169 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Shanghai No. 089 → Rosamonda, Tokyo, 31 Mar 1916 (JACAR B03050088300 fr. 0477)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 168 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Qingdao (Seitō) No. 119 → Rosamonde, Tokyo, 31 Mar 1916 (JACAR B03050088300 fr. 0478b–0479)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 167 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Sun (Tokyo) → Konglipo, Manila, 1 Apr 1916 (JACAR B03050088300 fr. 0486b)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 166 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Sun (Tokyo) → Junzaburo, Shanghai, No. 00125, 1 Apr 1916 (JACAR B03050088300 fr. 0487a)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 165 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Qingdao (Seitō) No. 12 → Rosamonde, Tokyo, 3 Apr 1916 (JACAR B03050088300 fr. 0488)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 164 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Sun (Tokyo) → Junzaburo, Shanghai, No. 01125, 4 Apr 1916 (JACAR B03050088300 fr. 0493a)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 163 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Sun (Tokyo) → Junzaburo, Shanghai, No. 01225, 4 Apr 1916 (JACAR B03050088300 fr. 0493b)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 162 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Sun (Tokyo) → Yamada Junzaburō, Shanghai, No. 01325, 4 Apr 1916 (JACAR B03050088300 fr. 0494)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 161 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Hankow → Sun Yat-sen, Tokyo, 13 Apr 1916, +111 digit code (JACAR B03050088400 fr. 0517)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 160 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo (Linwailuk) → Junzaburo, Shanghai, No. 01425, 19 May 1916 (JACAR B03050089100 fr. 0065 upper; transcripts C T2)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 159 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo (Linwailuk) → Junzaburo, Shanghai, No. 01325, 19 May 1916 (JACAR B03050089100 fr. 0065 lower; transcripts C T3)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 158 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Shanghai No. 051 → Linwailuk, Tokyo, 19 May 1916, death of Chen Qimei (JACAR B03050089100 fr. 0066)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 157 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo (Linwailuk) → Junzaburo, Shanghai, No. 01525, 20 May 1916 (JACAR B03050089100 fr. 0067; transcripts C T5)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 156 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Manila No. 50 → Tōyama Mitsuru, Tokyo, received 23 May 1916 (JACAR B03050089100 fr. 0082 upper; transcripts C T10; tentative key)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 155 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Shanghai No. 0101 → Linwailuk, Tokyo, 22 May 1916 (JACAR B03050089100 fr. 0082–0083; transcripts C T11)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 154 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Shanghai No. 065 → Linwailuk, Tokyo, 24 May 1916 (JACAR B03050089100 fr. 0088 lower; transcripts C T16)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 153 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Shanghai No. 064 (signed Junzaburo) → Linwailuk, Tokyo, 24 May 1916 (JACAR B03050089100 fr. 0089; transcripts C T17)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 152 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo (Linwailuk) → Junzaburo, Shanghai, No. 01125, 26 May 1916, 10.25 am (JACAR B03050089100; transcripts C T14 = D fr. 32 upper)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 151 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo → Junzaburo, Shanghai, No. 01225, 26 May 1916 (JACAR B03050089100 fr. 0091 lower; transcripts D fr. 31 lower)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 150 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo → Junzaburo, Shanghai, No. 01725, 29 May 1916 (JACAR B03050089100 fr. 0095 lower; transcripts D fr. 35 lower)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 149 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Shanghai No. 034 → Linwailuk, Tokyo, 28 May 1916 (JACAR B03050089100 fr. 0096; transcripts D fr. 36)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 148 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo → Junzaburo, Shanghai, No. 02025, 30 May 1916 (JACAR B03050089100 fr. 0113 upper; transcripts D fr. 53 upper)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 147 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo (Xie Chi) → Yamada Junzaburō, Shanghai, No. 01825, 29 May 1916 (JACAR B03050089100 fr. 0113–0114)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 146 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Sun Yat-sen, Shanghai → Dai Jitao (\"Toi c/o Kikuchi\"), Tokyo, 23 Mar 1917 (JACAR B03050090200 fr. 0504)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 145 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Sun Yat-sen, Shanghai → Dai Jitao, Tokyo, 25 Mar 1917 (JACAR B03050090200 fr. 0507)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 144 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Dai Jitao (Tenkiutai), Tokyo → Sun Yat-sen, Shanghai, 26 Mar 1917 (JACAR B03050090200 fr. 0506)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 143 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Hongkong → Toyama, 26 Reinanzaka, Tokyo, 11 March 1914 (JACAR B03050087400 fr. 0064; Dudout Hong Kong substitution)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 142 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo (頭山満) → Kwongkingchong, Enock Road, Hongkong, 13 March 1914 (JACAR B03050087400 fr. 0067b; Dudout Hong Kong substitution)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 141 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "San Francisco → Hsuweilin, Tokyo, 27 July 1914 (JACAR B03050087500 fr. 0117; Dudout Hsuweilin table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 140 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo Aoicho (頭山満) → Laisao Sung, 70 Broadway Terrace, Shanghai, 28 June 1914 (JACAR B03050087400 fr. 0104a; Dudout Laisaosang table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 139 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo (頭山滿) → \"Laisaosang\", Shanghai, 31 January 1915 (JACAR B03050087600 fr. 0182; Dudout Laisaosang table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 138 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo (頭山滿) → \"Laisaosang\", Shanghai, February 1915 (JACAR B03050087600 fr. 0185; Dudout Laisaosang table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 137 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Shanghai → \"Rosamonde\", Tokyo, 2 February 1915 (JACAR B03050087600 fr. 0186; Dudout Laisaosang table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 136 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "San Francisco (Young China) → Toyama, Reinanzaka, 5 July 1914 (JACAR B03050087400 fr. 0110b; Dudout New York table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 135 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "New York → \"Sunwen\", Tokyo, February 1915 (JACAR B03050087600 fr. 0211b; Dudout New York table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 134 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "New York → \"Sunwen\", Tokyo, 18 February 1915 (JACAR B03050087600 fr. 0198; Dudout New York table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 133 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "New York → \"Sunwen\", Tokyo, 20 February 1915 (JACAR B03050087600 fr. 0201; Dudout New York table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 132 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Shanghai → \"Rosamonde\", Tokyo (\"Thirtieth\"), 26 February 1915 (JACAR B03050087600 fr. 0211; Dudout Thirtieth table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 131 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Shanghai → \"Rosamonde\", Tokyo (\"Thirtieth\"), 27 February 1915 (JACAR B03050087600 fr. 0203; Dudout Thirtieth table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 130 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Shanghai → \"Rosamonde\", Tokyo (\"Thirtieth\"), 7 March 1915 (JACAR B03050087600 fr. 0220; Dudout Thirtieth table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 129 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo (頭山) → \"Junzaburo\", Shanghai, 10 March 1915 (JACAR B03050087700 fr. 0224; Dudout Thirtieth table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 128 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Shanghai → \"Rosamonde\", Tokyo (\"Thirtieth\"), 12 March 1915 (JACAR B03050087700 fr. 0233a; Dudout Thirtieth table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 127 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Shanghai → \"Rosamonde\", Tokyo (\"Thirtieth\"), 13 March 1915 (JACAR B03050087700 fr. 0233b; Dudout Thirtieth table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 126 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Shanghai → \"Rosamonde\", Tokyo (\"Thirtieth\"), 30 March 1915 (JACAR B03050087700 fr. 0243; Dudout Thirtieth table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 125 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Shanghai → \"Rosamonde\", Tokyo (\"Thirtieth\"), 31 March 1915 (JACAR B03050087700 fr. 0246; Dudout Thirtieth table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 124 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Shanghai → \"Rosamonde\", Tokyo, 11 April 1915 (JACAR B03050087700 fr. 0255; Dudout Thirtieth table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 123 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Shanghai → \"Rosamonde\", Tokyo (\"Thirtieth\"), 5 May 1915 (JACAR B03050087700 fr. 0261; Dudout Thirtieth table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 122 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo → \"Junzaburo\", Shanghai (indicator \"Thirteenth\"), 28 February 1916 (JACAR B03050088000 fr. 0307; Dudout Thirteenth table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 121 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo → \"Junzaburo\", Shanghai, 12 March 1916 (JACAR B03050088100 fr. 0348; Dudout Thirteenth table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 120 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo → \"Junzaburo\", Shanghai, 16 March 1916 (JACAR B03050088100 fr. 0382; Dudout Thirteenth table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 119 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Shanghai (0125) → Nakayama, 109 Harajuku, 15 April 1916 (JACAR B03050088500 fr. 0590; Dudout Sixteenth table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 118 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Shanghai (03) → Nakayama, 109 Harajuku, 18 April 1916 (JACAR B03050088500 fr. 0592; Dudout Sixteenth table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 117 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo (中山) → Yamanaka, Banzaikwan, Shanghai, 19 April 1916 (JACAR B03050088500 fr. 0603; Dudout Sixteenth table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 116 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo (中山) → Yamanaka, Banzaikwan, Shanghai, 21 April 1916 (JACAR B03050088600 fr. 0616; Dudout Sixteenth table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 115 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Shanghai (015) → Nakayama, Harajuku, 22 April 1916 (JACAR B03050088600 fr. 0629a; Dudout Sixteenth table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 114 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Shanghai (082) → Nakayama, Harajuku, 22 April 1916 (JACAR B03050088600 fr. 0629b; Dudout Sixteenth table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 113 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Shanghai (0124) → Rosamonde, 17 April 1916 (JACAR B03050088500 fr. 0591; Dudout Seventeenth table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 112 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Shanghai (035) → Rosamonde, 18 April 1916 (JACAR B03050088500 fr. 0593; Dudout Seventeenth table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 111 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo (中山) → Yulangsie, 31 Rue du Consulat, Shanghai, 18 April 1916 (JACAR B03050088500 fr. 0601a; Dudout Seventeenth table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 110 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Shanghai (027) → Rosamonde, 20 April 1916 (JACAR B03050088600 fr. 0608a; Dudout Seventeenth table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 109 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo → Shanghai (Junzaburo), 22 April 1916 (JACAR B03050088600 fr. 0627; Dudout Thirty-fifth table, Hu Hanmin)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 108 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Shanghai → Tokyo (Rosamonde), 24 April 1916 (JACAR B03050088600 fr. 0642b; Dudout Thirty-fifth table, Hu Hanmin)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 107 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo → Shanghai (Junzaburo), 11 May 1916 (JACAR B03050089000 fr. 0042b; Dudout Thirtyeight table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 106 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo → Shanghai (Junzaburo), 12 May 1916 (JACAR B03050089000 fr. 0045a; Dudout Thirtyeight table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 105 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo (Huang Xing) → Shanghai (Junzaburo), No. 01325, 26 May 1916 (JACAR B03050089100 fr. 0091a; Dudout Huang Xing table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 104 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo (Huang Xing) → Shanghai (Junzaburo), No. 01525, 28 May 1916 (JACAR B03050089100 fr. 0095a; Dudout Huang Xing table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 103 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Shanghai No. 078 → Tokyo (Ylchang), 30 May 1916 (JACAR B03050089100 fr. 0115b–0116; Dudout Huang Xing table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 102 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo (Huang Xing) → Shanghai (Junzaburo), 31 May 1916 (JACAR B03050089200 fr. 0130b; Dudout Huang Xing table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 101 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo (Huang Xing) → Shanghai (Junzaburo), 31 May 1916 (JACAR B03050089200 fr. 0131b; Dudout Huang Xing table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 100 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Shanghai → Tokyo (Ylchang), 2 June 1916 (JACAR B03050089200 fr. 0144a; Dudout Huang Xing table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 99 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo (Huang Xing) → Shanghai (Junzaburo), 3 June 1916 (JACAR B03050089200 fr. 0145; Dudout Huang Xing table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 98 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo (Huang Xing) → Shanghai (Junzaburo), 6 June 1916 (JACAR B03050089200 fr. 0152b; Dudout Huang Xing table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 97 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Shanghai → Tokyo (Ylchang), 6 June 1916 (JACAR B03050089200 fr. 0160a; Dudout Huang Xing table)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 96 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo → Zhaoqing (軍務院, 岑), 23 June 1916 (JACAR B03050089900 fr. 0348; Dudout grid G0 文密)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 95 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo → Zhaoqing (軍務院, 岑), 30 June 1916 (JACAR B03050089900 fr. 0386; Dudout grid G0 文密)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 94 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo → Shanghai (中華新報, 轉文羣), 12 July 1916 (JACAR B03050090000 fr. 0406; Dudout grid G0 文密)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 93 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo → Zhaoqing (軍務院), 18 July 1916 (JACAR B03050090000 fr. 0415; Dudout grid G0 文密)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 92 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Zhao Shen, Tokyo → 軍務院, Canton, 19 July 1916 (JACAR B03050090000 fr. 0416b; Dudout grid G0 文密, checked by Bourdeau)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 91 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo → Zhaoqing (岑都司令), 13 September 1916 (JACAR B03050090100 fr. 0455b; Dudout grid G0 文密)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 90 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo → Zhaoqing (都司令部, 李印泉), 30 September 1916 (JACAR B03050090100 fr. 0462; Dudout grid G0 文密)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 89 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo → Shanghai (中華新報) for Yunnan, 17 July 1916 (JACAR B03050090000 fr. 0413; Dudout grid Y0 Cg)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 88 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Zhao Shen, Tokyo → 中華新報, Shanghai, for Tang Jiyao, 19 July 1916 (JACAR B03050090000 fr. 0416a; Dudout grid Y0, checked by Bourdeau)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 87 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo → Kunming (唐都督), 8 September 1916 (JACAR B03050090100 fr. 0449; Dudout grid Y0 Cg)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 86 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo → Kunming (唐都督), 13 September 1916 (JACAR B03050090100 fr. 0455a; Dudout grid Y0 Cg)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 85 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo → Kunming (唐都督), 11 October 1916 (JACAR B03050090100 fr. 0467; Dudout grid Y0 Cg)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 84 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo → Kunming (唐督軍), 20 October 1916 (JACAR B03050090100 fr. 0473; Dudout grid Y0 Cg)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 83 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Zhao Shen, Tokyo → 唐督軍, Yunnanfu, 5 November 1916 (JACAR B03050090100 fr. 0489a; Dudout grid Y0, checked by Bourdeau)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 82 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo → Kunming (唐督軍), 9 November 1916, death of Cai E (JACAR B03050090100 fr. 0496a; Dudout grid Y0 Cg)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 81 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Kunming → Tokyo (趙伸 c/o 関正雄), 9 November 1916 (JACAR B03050090100 fr. 0498; Dudout grid Y0 Cg)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 80 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunintercepts.html", "name": "Tokyo → Kunming (財政廳), 11 November 1916 (JACAR B03050090100 fr. 0494a; Dudout grid Y0 Cg)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "YES", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 79 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/toledo1565.html", "name": "García de Toledo to Philip II, Messina, 16 July 1565 (AGS Estado leg. 1394 no. 247, duplicado)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/toledo1565", "number": 78 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/toledo1565.html", "name": "García de Toledo to Philip II, covering letter, Messina, 16 July 1565 (AGS Estado leg. 1394 no. 249, duplicado)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/toledo1565", "number": 77 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/vasto1527.html", "name": "Alfonso d'Avalos, Marquis del Vasto, to Charles V, Rome, early Dec 1527 (BnF fr. 3022 no. 6, ff. 16v-17v)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/vasto1527", "number": 76 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/vich1511.html", "name": "Ferdinand the Catholic to Jerónimo de Vich, Seville, 4 Apr 1511 (AHN Estado 8715 N.45)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/vich1511", "number": 75 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/vich1511.html", "name": "Ferdinand the Catholic to Jerónimo de Vich, Burgos, 5 Jun 1512 (AHN Estado 8715 N.57)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/vich1511", "number": 74 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yard1699.html", "name": "Robert Yard to the Earl of Manchester, Whitehall, 12 Oct 1699 (Beinecke OSB MSS fc37 box 2 folder 49; DECODE R2859)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/yard1699", "number": 73 }, { "submitted": "2026-09-18", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/yard1699.html", "name": "Robert Yard to the Earl of Manchester, Whitehall, 16 Oct 1699 (Beinecke OSB MSS fc37 box 2 folder 51; DECODE R2860)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/yard1699", "number": 72 }, { "submitted": "2026-09-17", "solver": "prinz", "source": "https://www.prinzai.com/p/gpt-6-astra-solves-a-wwi-german-radio", "name": "German ADFGVX radio message of 27 November 1918", "type": "ADFGVX", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "key identification and application, decipherment, and historical cross-checking; plaintext independently re-decryptable, but novelty and the apparent key-date mismatch remain unresolved", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/swarm-ai-research/cipher-break-verification", "number": 71 }, { "submitted": "2026-09-17", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/bethune.html", "name": "Henri IV to Philippe de Béthune, Paris, 10 Nov 1601 (BnF fr. 3484 no. 8, f. 34r-v)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/bethune", "number": 70 }, { "submitted": "2026-09-17", "solver": "George Lasry; Michael Brackx", "source": "https://dbourdeau.github.io/cyphersolver/esp318no95.html", "name": "Unaddressed Spanish cipher letter from Italy, 8 Jan 1497 (BnF Espagnol 318 no. 95, f. 122r–v)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from ciphertext only; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/esp318no95", "number": 69 }, { "submitted": "2026-09-17", "solver": "Arya Sanketbhai Patel", "source": "https://dbourdeau.github.io/cyphersolver/hesse1603.html", "name": "Henri IV to Landgrave Maurice of Hesse-Kassel, 22 Nov 1602 (Rommel, Correspondance inédite 1840, p. 84)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Fable 5.1; Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/hesse1603", "number": 68 }, { "submitted": "2026-09-17", "solver": "Arya Sanketbhai Patel", "source": "https://dbourdeau.github.io/cyphersolver/hesse1603.html", "name": "Henri IV to Landgrave Maurice of Hesse-Kassel, 12 Jan 1603 (Rommel 1840, p. 99)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Fable 5.1; Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/hesse1603", "number": 67 }, { "submitted": "2026-09-17", "solver": "Arya Sanketbhai Patel", "source": "https://dbourdeau.github.io/cyphersolver/hesse1603.html", "name": "Henri IV to Landgrave Maurice of Hesse-Kassel, 27 Dec 1604 (Rommel 1840, pp. 211-214)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Fable 5.1; Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/hesse1603", "number": 66 }, { "submitted": "2026-09-17", "solver": "Arya Sanketbhai Patel", "source": "https://dbourdeau.github.io/cyphersolver/hesse1603.html", "name": "Henri IV to Landgrave Maurice of Hesse-Kassel, 28 Apr 1605 (Rommel 1840, p. 230)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Fable 5.1; Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/hesse1603", "number": 65 }, { "submitted": "2026-09-17", "solver": "Arya Sanketbhai Patel", "source": "https://dbourdeau.github.io/cyphersolver/hesse1603.html", "name": "Henri IV to Landgrave Maurice of Hesse-Kassel, 22 Dec 1605 (Rommel 1840, pp. 269-272)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Fable 5.1; Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/hesse1603", "number": 64 }, { "submitted": "2026-09-17", "solver": "Arya Sanketbhai Patel", "source": "https://dbourdeau.github.io/cyphersolver/hesse1603.html", "name": "Henri IV to Landgrave Maurice of Hesse-Kassel, 20 May 1606 (Rommel 1840, pp. 307-314)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Fable 5.1; Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/hesse1603", "number": 63 }, { "submitted": "2026-09-17", "solver": "Arya Sanketbhai Patel", "source": "https://dbourdeau.github.io/cyphersolver/hesse1603.html", "name": "Henri IV to Landgrave Maurice of Hesse-Kassel, 24 Jan 1609 (Rommel 1840, p. 391)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Fable 5.1; Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/hesse1603", "number": 62 }, { "submitted": "2026-09-17", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/lanssac.html", "name": "Lanssac to Charles IX, Warsaw, 26 Apr 1573 (BnF fr. 4735 no. 51, f. 124)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/lanssac", "number": 61 }, { "submitted": "2026-09-17", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/lanssac.html", "name": "Lanssac to Henri, duc d'Anjou, Warsaw, 24 Apr 1573 (BnF fr. 4735 no. 60, f. 154r–v)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/lanssac", "number": 60 }, { "submitted": "2026-09-17", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/lanssac.html", "name": "Lanssac to Catherine de Médicis, Warsaw, 24 Apr 1573 (BnF fr. 4735 no. 61, ff. 156r–v)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/lanssac", "number": 59 }, { "submitted": "2026-09-17", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/lanssac.html", "name": "Lanssac to Charles IX, Warsaw, 1 May 1573 (BnF fr. 4735 no. 63, f. 160)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/lanssac", "number": 58 }, { "submitted": "2026-09-17", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/lanssac.html", "name": "Lanssac to Henri, duc d'Anjou, Warsaw, 1 May 1573 (BnF fr. 4735 no. 65, f. 164)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/lanssac", "number": 57 }, { "submitted": "2026-09-17", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/lanssac.html", "name": "Lanssac to Charles IX, Płock, 9 May 1573 (BnF fr. 4735 no. 70, f. 174)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/lanssac", "number": 56 }, { "submitted": "2026-09-17", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/mondoucet.html", "name": "Claude de Mondoucet to Charles IX, Amsterdam, 9 September 1573 (BnF Français 16127, ff. 135r-137v; Court decipherment ff. 139r-141r)", "type": "Homophonic substitution", "model": "Not reported", "version": "Not reported", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://dbourdeau.github.io/cyphersolver/mondoucet.html", "number": 55 }, { "submitted": "2026-09-17", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/mondoucet.html", "name": "Claude de Mondoucet to Charles IX, Antwerp, 4 January 1573 (BnF Français 16127, ff. 126v-127v)", "type": "Homophonic substitution", "model": "Not reported", "version": "Not reported", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://dbourdeau.github.io/cyphersolver/mondoucet.html", "number": 54 }, { "submitted": "2026-09-17", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/raince.html", "name": "Nicolas Raince to Anne de Montmorency, Rome, 13 May 1526 (BnF fr. 2984 no. 7, pp. 29-31)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/raince", "number": 53 }, { "submitted": "2026-09-17", "solver": "Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/raince.html", "name": "Nicolas Raince to Anne de Montmorency, Rome, 20 Nov 1526 (BnF fr. 2984 no. 24, pp. 105-106)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/raince", "number": 52 }, { "submitted": "2026-09-17", "solver": "Daniel Bourdeau; Arya Sanketbhai Patel", "source": "https://dbourdeau.github.io/cyphersolver/sormano.html", "name": "Gaspare Sormano and Joachim de Vaulx to François I, Ferrara, 23 Feb 1529 (BnF fr. 3096 no. 65, ff. 119-120)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sormano", "number": 51 }, { "submitted": "2026-09-17", "solver": "Daniel Bourdeau; Arya Sanketbhai Patel", "source": "https://dbourdeau.github.io/cyphersolver/sormano.html", "name": "Gaspare Sormano and Joachim de Vaulx to François I, Ferrara, 23 Feb 1529, duplicata (BnF fr. 3096 no. 66, ff. 121-122)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sormano", "number": 50 }, { "submitted": "2026-09-17", "solver": "Daniel Bourdeau; Arya Sanketbhai Patel", "source": "https://dbourdeau.github.io/cyphersolver/sormano.html", "name": "Gaspare Sormano and Joachim de Vaulx to François I, Ferrara, 27 Feb 1529 (BnF fr. 3096 no. 63, ff. 115-116, 123)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sormano", "number": 49 }, { "submitted": "2026-09-16", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/catinat1691.html", "name": "Louvois to Catinat, Versailles, 8 Jul 1691 (Mémoires de Catinat, 1819, t. II pp. 295-299)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/catinat1691", "number": 48 }, { "submitted": "2026-09-16", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/catinat1691.html", "name": "Louvois to Catinat, Versailles, 9 Jul 1691 (Mémoires de Catinat, 1819, t. II pp. 299-304)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/catinat1691", "number": 47 }, { "submitted": "2026-09-16", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/catinat1691.html", "name": "Louis XIV to Catinat, Versailles, 19 Aug 1691 (Mémoires de Catinat, 1819, t. II pp. 305-309)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/catinat1691", "number": 46 }, { "submitted": "2026-09-16", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/catinat1691.html", "name": "Louis XIV to Catinat, 24 Aug 1691 (Mémoires de Catinat, 1819, t. II pp. 309-315)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/catinat1691", "number": 45 }, { "submitted": "2026-09-16", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/catinat1691.html", "name": "Louis XIV to Catinat, 29 Aug 1691 (Mémoires de Catinat, 1819, t. II pp. 315-318)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/catinat1691", "number": 44 }, { "submitted": "2026-09-16", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/catinat1691.html", "name": "Louis XIV to Catinat, Versailles, 6 Sept 1691 (Mémoires de Catinat, 1819, t. II pp. 318-320)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/catinat1691", "number": 43 }, { "submitted": "2026-09-16", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/catinat1691.html", "name": "Louis XIV to Catinat, Fontainebleau, 14 Sept 1691 (Mémoires de Catinat, 1819, t. II pp. 320-342)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/catinat1691", "number": 42 }, { "submitted": "2026-09-16", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/feuquieres.html", "name": "Louvois to d'Herleville, Versailles, 6 Sept 1690 (Mémoires et correspondance du maréchal de Catinat, 1819, t. I pp. 140–141)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Fable 5.1", "role": "key recovered from external plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/feuquieres", "number": 41 }, { "submitted": "2026-09-16", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/lucca.html", "name": "Fra Giovanni di Lucca to Ferdinand III, Brody, 30 May 1644 (HHStA Staatskanzlei Interiora, Chiffrenschlussel Kt. 20 Fasc. 27 ff. 18-19; DECODE R2159)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key recovered from external plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/lucca", "number": 40 }, { "submitted": "2026-09-16", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/navarre1586.html", "name": "Henry of Navarre's council to Ségur, La Rochelle, 10 July 1586 (BnF 500 de Colbert 401 f. 333)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/navarre1586", "number": 39 }, { "submitted": "2026-09-16", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/segur.html", "name": "Henry of Navarre to Ségur, [Ste-Foy?], Oct 1585 (BnF 500 de Colbert 401 f. 233)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Fable 5.1", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/segur", "number": 38 }, { "submitted": "2026-09-16", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/segur.html", "name": "Henry of Navarre to Ségur, Montauban, Feb 1586 (BnF 500 de Colbert 401 f. 239)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Fable 5.1", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/segur", "number": 37 }, { "submitted": "2026-09-16", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/segur.html", "name": "Henry of Navarre to Ségur, 1 Apr 1586, cipher slip (BnF 500 de Colbert 401 f. 288v)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Fable 5.1", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/segur", "number": 36 }, { "submitted": "2026-09-16", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/urquhart.html", "name": "Thomas Urquhart, Cyphral Octastich, The Jewel (London, 1652), last leaf", "type": "Code", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/urquhart", "number": 35 }, { "submitted": "2026-09-15", "solver": "Not reported", "source": "https://cryptocellar.org/bgac/spruch/10071941-088-061-out-nf.pdf", "name": "Enigma message MVUEH (NF 88/61), 10 July 1941", "type": "Enigma", "model": "OpenAI GPT", "version": "GPT-6 Astra", "role": "source examination, building search programs, experiments, review", "agents": "YES", "extent": "Complete", "documentation": "https://mvueh-enigma-solved.carterl.chatgpt.site/", "number": 34 }, { "submitted": "2026-09-15", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/adfgvx.html", "name": "German Eastern Front ADFGVX radio message, key of 1-3 Nov 1918 (Childs transcript p. 100)", "type": "ADFGVX", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/adfgvx", "number": 33 }, { "submitted": "2026-09-15", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/adfgvx.html", "name": "German ADFGVX radio message, Germania Etappe Konstantinopel, key of 1-3 Nov 1918 (Childs p. 105)", "type": "ADFGVX", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/adfgvx", "number": 32 }, { "submitted": "2026-09-15", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/adfgvx.html", "name": "German ADFGVX radio message, evening report, key of 1-3 Nov 1918 (Childs p. 109)", "type": "ADFGVX", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/adfgvx", "number": 31 }, { "submitted": "2026-09-15", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/adfgvx.html", "name": "German ADFGVX radio message, key of 4-6 Nov 1918 (Childs p. 132)", "type": "ADFGVX", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/adfgvx", "number": 30 }, { "submitted": "2026-09-15", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/adfgvx.html", "name": "German ADFGVX radio message, Funkstelle Kertsch, key of 4-6 Nov 1918 (Childs p. 146)", "type": "ADFGVX", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/adfgvx", "number": 29 }, { "submitted": "2026-09-15", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/adfgvx.html", "name": "German ADFGVX radio message on rouble rates, key of 7-9 Nov 1918 (Childs p. 171)", "type": "ADFGVX", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/adfgvx", "number": 28 }, { "submitted": "2026-09-15", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/adfgvx.html", "name": "German ADFGVX radio message F-G-X (Temesvar, Mirco), key of 7-9 Nov 1918 (Childs p. 164)", "type": "ADFGVX", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/adfgvx", "number": 27 }, { "submitted": "2026-09-15", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/adfgvx.html", "name": "German ADFGVX radio message VFGAG (Hoehe 828, Mirco), key of 7-9 Nov 1918 (Childs p. 164)", "type": "ADFGVX", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/adfgvx", "number": 26 }, { "submitted": "2026-09-15", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/adfgvx.html", "name": "German ADFGVX radio message 'missing 10 letters' (Durchbruch vorbereitet), key of 10-12 Nov 1918 (Childs p. 176)", "type": "ADFGVX", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/adfgvx", "number": 25 }, { "submitted": "2026-09-15", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/adfgvx.html", "name": "German ADFGVX radio message FFVXV, part 1, CHI key, 13 Nov 1918 (Childs p. 187/191)", "type": "ADFGVX", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/adfgvx", "number": 24 }, { "submitted": "2026-09-15", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/adfgvx.html", "name": "German ADFGVX radio message AFAFF, part 2 (continuation of FFVXV), CHI key, 13 Nov 1918 (no Childs page)", "type": "ADFGVX", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/adfgvx", "number": 23 }, { "submitted": "2026-09-15", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/adfgvx.html", "name": "German ADFGVX radio message VGADA (Kertsch, Entente fleet), key of 22-24 Nov 1918 (Childs p. 215, unnumbered on list)", "type": "ADFGVX", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/adfgvx", "number": 22 }, { "submitted": "2026-09-15", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/boswell.html", "name": "Charles I to the Duke of Courland's envoy (sent via Sir William Boswell), Oxford, 2 Nov 1643 (TNA SP 84/157/96 f. 217)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Fable 5.1", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/boswell", "number": 21 }, { "submitted": "2026-09-15", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/boswell.html", "name": "Sir Edward Nicholas to Sir William Boswell, Oxford, 2 Nov 1643 (TNA SP 84/157/97 f. 219)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Fable 5.1", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/boswell", "number": 20 }, { "submitted": "2026-09-15", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/forster.html", "name": "Sir Richard Forster papers, ciphered French passage, 13 May 1644 (Archives départementales du Val-d'Oise 68.H.8, 3e liasse)", "type": "Homophonic substitution", "model": "Anthropic Claude", "version": "Claude Fable 5.1; Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/forster", "number": 19 }, { "submitted": "2026-09-15", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/huangxing.html", "name": "Military Affairs Council (Tang Jiyao, Cen Chunxuan et al.), Zhaoqing → Huang Xing, Tokyo, 20 May 1916 (JACAR B03050089100 fr. 0076–0078, groups 0–107)", "type": "Code and numerical transformations", "model": "Combination", "version": "Claude Opus 5.5; GPT-6.1 Sol", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/huangxing", "number": 18 }, { "submitted": "2026-09-15", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/huangxing.html", "name": "Lin Hu, Li Genyuan and four others, Zhaoqing → Huang Xing, Tokyo, 20 May 1916 (JACAR B03050089100 fr. 0076–0078, groups 108–228)", "type": "Code and numerical transformations", "model": "Combination", "version": "Claude Opus 5.5; GPT-6.1 Sol", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/huangxing", "number": 17 }, { "submitted": "2026-09-15", "solver": "Harumi-Matsuba", "source": "https://dbourdeau.github.io/cyphersolver/huangxing.html", "name": "Huang Xing, Tokyo → Lin Hu, Li Genyuan and others, Zhaoqing, 25 May 1916 (JACAR B03050731500 fr. 0246)", "type": "Code and numerical transformations", "model": "Combination", "version": "Claude Opus 5.5; GPT-6.1 Sol", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/huangxing", "number": 16 }, { "submitted": "2026-09-15", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/ormonde.html", "name": "Lord Maltravers to the Earl of Ormonde, Dorking, 13 Sep 1634 (HMC Ormonde MSS i, p. 28)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Fable 5.1", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/ormonde", "number": 15 }, { "submitted": "2026-09-15", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/ormonde.html", "name": "Lord Maltravers to the Earl of Ormonde, Whitehall, 22 Jan 1634/5 (HMC Ormonde MSS i, pp. 28-29)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Fable 5.1", "role": "key recovered from adjacent plaintext; partial (Cyphersolver ledger)", "agents": "Not reported", "extent": "Partial", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/ormonde", "number": 14 }, { "submitted": "2026-09-15", "solver": "Daniel Bourdeau; Brice Dudout", "source": "https://dbourdeau.github.io/cyphersolver/sunyatsen.html", "name": "\"Tanaka\", Swatow → Sun Yat-sen (\"Rosamonde Tokio\"), 3 Apr 1916 (JACAR B03050738800, frame 680682)", "type": "Code and numerical transformations", "model": "Anthropic Claude", "version": "Claude Opus 5; Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from ciphertext only; complete (Cyphersolver ledger)", "agents": "YES", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/sunyatsen", "number": 13 }, { "submitted": "2026-09-14", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/armstrong.html", "name": "John Armstrong to James Madison, coded postscript, Bourbon-l'Archambault, 30 Aug 1808 (LoC Madison Papers reel 10 frame 0521; Founders 99-01-02-3466)", "type": "Code", "model": "Anthropic Claude", "version": "Claude Fable 5.1; Claude Opus 5.5", "role": "key recovered from external plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/armstrong", "number": 12 }, { "submitted": "2026-09-14", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/feynman.html", "name": "Feynman cipher no. 2 (Housman, 'Terence, this is stupid stuff'), 1953", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/feynman", "number": 11 }, { "submitted": "2026-09-14", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/feynman.html", "name": "Feynman cipher no. 3 (opening of Feynman's lambda-transition helium paper), 1953", "type": "MASC", "model": "Anthropic Claude", "version": "Claude Opus 5.5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/feynman", "number": 10 }, { "submitted": "2026-09-14", "solver": "Richard Bean", "source": "https://dbourdeau.github.io/cyphersolver/milroy.html", "name": "Cox to General Robert H. Milroy, Union telegram in Stager Cipher No. 7, 3 Dec 1862 (Milroy's copy)", "type": "Transposition", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/milroy", "number": 9 }, { "submitted": "2026-09-14", "solver": "Richard Bean", "source": "https://dbourdeau.github.io/cyphersolver/milroy.html", "name": "Bascom telegram on General Kelley readiness orders from Halleck, Milroy papers, 4 Dec 1861", "type": "Transposition", "model": "Anthropic Claude", "version": "Claude Opus 5", "role": "key transfer: known key applied; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/milroy", "number": 8 }, { "submitted": "2026-09-14", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/richelieu.html", "name": "Richelieu to M. de Rancé, Saint-Privat, 7 Jul 1629 (BnF fr. 3829 f. 87; DECODE R9461)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Fable 5.1 or Claude Opus 5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/richelieu", "number": 7 }, { "submitted": "2026-09-14", "solver": "Daniel Bourdeau", "source": "https://dbourdeau.github.io/cyphersolver/richelieu.html", "name": "Richelieu to M. de Rancé, [mid-July] 1629 (BnF fr. 3829 f. 89; DECODE R9462)", "type": "Nomenclator", "model": "Anthropic Claude", "version": "Claude Fable 5.1 or Claude Opus 5", "role": "key recovered from adjacent plaintext; complete (Cyphersolver ledger)", "agents": "Not reported", "extent": "Complete", "documentation": "https://github.com/dbourdeau/cyphersolver/tree/main/targets/richelieu", "number": 6 }, { "submitted": "2026-02-02", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/944", "name": "cpc_1919-02-07_USA_Dubois_USA_Springville", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-5.2", "role": "analysis and decipherment from an incomplete/noisy transcription; GPT-5.2 recovered multiple plaintext words and provided sufficient structure to complete the decipherment", "agents": "NO", "extent": "Partial", "documentation": "https://research.hcportal.eu/histocrypt/2026/gpt-postcards/", "number": 5 }, { "submitted": "2026-02-02", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1459", "name": "pc_hcp_140", "type": "Anamorphic writing", "model": "OpenAI GPT", "version": "GPT-5.2", "role": "multimodal image analysis and recovery of concealed text after identifying the required geometric transformation; GPT-5.2 successfully interpreted the transformed hidden message", "agents": "NO", "extent": "Complete", "documentation": "https://research.hcportal.eu/histocrypt/2026/gpt-postcards/", "number": 4 }, { "submitted": "2026-01-29", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1454", "name": "pc_hcp_135", "type": "MASC/Pigpen", "model": "OpenAI GPT", "version": "GPT-5.2", "role": "multimodal transcription, cipher identification and decipherment; GPT-5.2 correctly transcribed the symbols and solved the postcard using the appropriate Pigpen key/variant, including a run in which the correct variant was identified through tool-assisted search", "agents": "NO", "extent": "Complete", "documentation": "https://research.hcportal.eu/histocrypt/2026/gpt-postcards/", "number": 3 }, { "submitted": "2026-01-29", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1510", "name": "pc_hcp_191", "type": "MASC", "model": "OpenAI GPT", "version": "GPT-5.2", "role": "multimodal transcription, cipher identification, key recovery and decipherment; GPT-5.2 identified the numerical substitution system and recovered the plaintext with only minor residual errors", "agents": "NO", "extent": "Complete", "documentation": "https://research.hcportal.eu/histocrypt/2026/gpt-postcards/threads/comm-17.html", "number": 2 }, { "submitted": "2026-01-28", "solver": "Tomáš Pavuk", "source": "https://crypto.hcportal.eu/dashboard/cryptograms/1827", "name": "pc_hcp_508", "type": "Transposition", "model": "OpenAI GPT", "version": "GPT-5.2", "role": "transcription, structural analysis and decipherment using GPT-5.2 reasoning", "agents": "NO", "extent": "Partial", "documentation": "https://research.hcportal.eu/histocrypt/2026/gpt-postcards/threads/comm-11.html", "number": 1 } ] }