Old secrets. New approaches.

History, deciphered.
With a little help from AI.

A register of people bringing historical cryptograms to light. Explore the ciphers, the solutions, and the precise role artificial intelligence played in each decipherment.

The decipherment register

Credit the solver. Document the method. Make the work reproducible.

1955 CONTRIBUTIONS
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Extent: Complete = at least 95% of the plaintext words read; Partial = less than 95% (the rule of the Cyphersolver ledger).

Contributors, AI-assisted decipherments, and dates of submission.
No.Date of submission Solved byCryptogram source Cryptogram nameCipher typeAI model & version Role of the AI AI agents used? Extent Documentation
1134 Maxim Egorov / Cipher-Atelier Source ↗crypto.hcportal.eu pc_hcp_367 MASC OpenAI GPTGPT-6.1 Sol transcription, comparison, Czech restoration, translation, curation Yes Complete Documentation ↗github.com
1133 Maxim Egorov / Cipher-Atelier Source ↗crypto.hcportal.eu pc_hcp_368 MASC OpenAI GPTGPT-6.1 Sol transcription, comparison, Czech restoration, translation, curation Yes Complete Documentation ↗github.com
1132 Maxim Egorov / Cipher-Atelier Source ↗crypto.hcportal.eu pc_hcp_369 MASC OpenAI GPTGPT-6.1 Sol transcription, comparison, Czech restoration, translation, curation Yes Complete Documentation ↗github.com
1131 Maxim Egorov / Cipher-Atelier Source ↗crypto.hcportal.eu pc_hcp_370 MASC OpenAI GPTGPT-6.1 Sol transcription, comparison, Czech restoration, translation, curation Yes Complete Documentation ↗github.com
1130 Maxim Egorov / Cipher-Atelier Source ↗crypto.hcportal.eu pc_hcp_371 MASC OpenAI GPTGPT-6 transcription, comparison, Czech restoration, translation, curation No Complete Documentation ↗github.com
1129 Maxim Egorov / Cipher-Atelier Source ↗crypto.hcportal.eu pc_hcp_372 MASC OpenAI GPTGPT-6 transcription, comparison, Czech restoration, translation, curation No Complete Documentation ↗github.com
1128 Maxim Egorov / Cipher-Atelier Source ↗crypto.hcportal.eu pc_hcp_373 MASC OpenAI GPTGPT-6 transcription, comparison, Czech restoration, translation, curation No Complete Documentation ↗github.com
1127 Maxim Egorov / Cipher-Atelier Source ↗crypto.hcportal.eu pc_hcp_374 MASC OpenAI GPTGPT-6 transcription, comparison, Czech restoration, translation, curation No Complete Documentation ↗github.com
1126 Maxim Egorov / Cipher-Atelier Source ↗crypto.hcportal.eu pc_hcp_375 MASC OpenAI GPTGPT-6 transcription, comparison, Czech restoration, translation, curation No Complete Documentation ↗github.com
1125 Maxim Egorov / Cipher-Atelier Source ↗crypto.hcportal.eu pc_hcp_376 MASC OpenAI GPTGPT-6 transcription, comparison, Czech restoration, translation, curation No Complete Documentation ↗github.com
Showing 1–10 of 154 contributions
Add your piece of history

Solved a cryptogram with AI?

Share your solution and help document how AI contributes to historical decipherment. Send your submission to the register’s administrator.

Submit a solution admin@hcportal.eu
Every submission must include
  • The name of the person who solved the cryptogram
  • The source of the cryptogram, preferably a URL
  • The explicit AI model name and version
  • The deciphered text alongside the reconstructed cipher key

Please also include the cryptogram’s name, cipher type, documentation explaining how it was solved, the model’s role, and whether AI agents were used. If agents were used, describe their tasks. The decipherment must be reproducible.

Register statistics

Calculated from all 1955 contributions, regardless of table filters.

Records by cipher type

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Submissions by date

Newest on the left · Scroll right for older dates →

Records by AI model

Model totals and percentages · Scroll down in the legend for more models ↓

Records by AI model and version

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Share of records by solver

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Records by solver

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Role of the AI

Pie: share of role mentions · Legend: share of role mentions and share of all records · Scroll down in the legend ↓

AI agent use

Agent categories and percentages · No chart scrolling needed

Complete vs partial

Complete = at least 95% of the plaintext words read (Cyphersolver rule)

Complete and partial by solver

Green complete · gold partial · grey not reported · Scroll down for more solvers ↓