GPAI Ledger › Claude Opus 4.1 (Anthropic) › Capture 31 Aug 2026
Claude Opus 4.1 — capture 20260831T113329Z
| Provider | Anthropic |
|---|---|
| Target | AIAL evaluation page — https://raw.githubusercontent.com/AIAccountabilityLab/gpai-training-transparency/4c332ff3420ed7bf1328d384d4b53bbfe3489f9d/public/evals/claude-opus-4-1/index.html |
| Fetched (UTC) | 2026-08-31T11:33:29Z |
| 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 | 11,787 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 | 879071227e202f2f96e407d1739f6697daf05a8d1e37f644e706af73ba1681c6 |
| OpenTimestamps proof | 879071227e202f2f96e407d1739f6697daf05a8d1e37f644e706af73ba1681c6.html.20260831T113329Z.ots (calendar-attested; anchored in bitcoin over time) |
| Wayback | not saved |
| Prior capture of this target | 32a1ce82aa524b628562d7ad83b46a69d8771ced2b0cc81491989a306f815676 (captured 2026-08-31T11:11:39Z) |
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 | 11,787 bytes |
|---|---|
| Canonical text SHA-256 | 1daf3df3c6498dcf5401f1836693fdeacda8f0a9f665e7950097e67ae035f235 |
| Extracted text length | 209 words |