GPAI Ledger › Claude Opus 4.5 (Anthropic) › Capture 31 Aug 2026
Claude Opus 4.5 — capture 20260831T113337Z
| Provider | Anthropic |
|---|---|
| Target | AIAL evaluation page — https://raw.githubusercontent.com/AIAccountabilityLab/gpai-training-transparency/4c332ff3420ed7bf1328d384d4b53bbfe3489f9d/public/evals/claude-opus-4-5/index.html |
| Fetched (UTC) | 2026-08-31T11:33:37Z |
| 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 | a2da20ce05080a66d14c9da0efbcf0f2e6ff7f09a2c9ea996e2808d1702afa2a |
| OpenTimestamps proof | a2da20ce05080a66d14c9da0efbcf0f2e6ff7f09a2c9ea996e2808d1702afa2a.html.20260831T113337Z.ots (calendar-attested; anchored in bitcoin over time) |
| Wayback | not saved |
| Prior capture of this target | f5c2b015df87efc6b43208fec8300c8abf57317f4ecab63d2a747777fd0db36b (captured 2026-08-31T11:11:46Z) |
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 | 46efa1519eacb1573ec7da6de8eed7636f4578254ae176499b8ac267207ec390 |
| Extracted text length | 209 words |