GPAI Ledger › Claude Mythos Preview (Anthropic) › Capture 31 Aug 2026
Claude Mythos Preview — capture 20260831T104823Z
| Provider | Anthropic |
|---|---|
| Target | AIAL evaluation page — https://raw.githubusercontent.com/AIAccountabilityLab/gpai-training-transparency/fb0dc932d4685c18e0fd0d590eb52bbeb1ceb783/public/evals/claude-mythos-preview/index.html |
| Fetched (UTC) | 2026-08-31T10:48:23Z |
| Upstream commit | 4 Aug 2026 — fb0dc932d468 (when this state began to stand in the upstream repository; this archive fetched it at the time above, not then) |
| Stored file | 20,214 bytes — not served (third-party research, archived but not republished here); the hash and timestamp proof below still establish what was published when |
| SHA-256 | a98919d3327c12ca0b1eb2e2d11d6bca901652d24bda93270041940ece762dd4 |
| OpenTimestamps proof | a98919d3327c12ca0b1eb2e2d11d6bca901652d24bda93270041940ece762dd4.html.20260831T104823Z.ots (calendar-attested; anchored in bitcoin over time) |
| Wayback | not saved |
| Prior capture of this target | 105be4af4a82a23682a72c8a42a6cf75476f3fef85bc7ce0125e0114ee85b5de (captured 2026-08-31T10:36:39Z) |
Verify: obtain the file from the target address above, then sha256sum it — it must equal the hash above; the .ots proof dates that hash.
Structured facts
This is another organisation's own research, and this project does not redistribute it: the file itself is not served here; these facts still pin its identity and let any copy be authenticated against this record.
| Document size | 20,214 bytes |
|---|---|
| Canonical text SHA-256 | 3d73662bc2c642518085bf5687fa6bb050c3b5d37e8f7a3d7edad94786ebba0e |
| Extracted text length | 780 words |