GPAI Ledger › Claude Mythos Preview (Anthropic) › Capture 31 Aug 2026
Claude Mythos Preview — capture 20260831T113323Z
| Provider | Anthropic |
|---|---|
| Target | AIAL evaluation page — https://raw.githubusercontent.com/AIAccountabilityLab/gpai-training-transparency/4c332ff3420ed7bf1328d384d4b53bbfe3489f9d/public/evals/claude-mythos-preview/version-2026-08-04.html |
| Fetched (UTC) | 2026-08-31T11:33:23Z |
| Upstream commit | 6 Aug 2026 — 4c332ff3420e (when this state began to stand in the upstream repository; this archive fetched it at the time above, not then) |
| Stored file | 20,873 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 | 9561a8249573bc89bc58a462185bdb04ff4088e1bd2fb782f591f5d1b92d3b59 |
| OpenTimestamps proof | 9561a8249573bc89bc58a462185bdb04ff4088e1bd2fb782f591f5d1b92d3b59.html.20260831T113323Z.ots (calendar-attested; anchored in bitcoin over time; identical bytes were first archived on 31 Aug 2026 — that version carries the earliest attestation) |
| Wayback | not saved |
| Prior capture of this target | e4e29e6ac11459d44d3d8c79d697101cf743d81f2f3f154dd95008669737ad9c (captured 2026-08-31T11:20:41Z) |
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 | 20,873 bytes |
|---|---|
| Canonical text SHA-256 | 218512b6d18b186cc2d4c81c3747518ed8986c544a26e46412a1b2e7f77c627c |
| Extracted text length | 792 words |