GPAI Ledger › Claude Sonnet 4.5 (Anthropic) › Capture 29 Aug 2026
Claude Sonnet 4.5 — capture 20260829T142404Z
| Provider | Anthropic |
|---|---|
| Target | AIAL evaluation — https://raw.githubusercontent.com/AIAccountabilityLab/gpai-training-transparency/main/evals/claude-sonnet-4-5.yaml |
| Fetched (UTC) | 2026-08-29T14:24:04Z |
| Stored file | 3,801 bytes — not served (third-party research, archived but not republished here); the hash, timestamp proof and Wayback witness below still establish what was published when |
| SHA-256 | d666d3cd0ce192f4c1c31f14bdf9e7ebd21b15916385cf4ec6d27dd7329f7d6c |
| OpenTimestamps proof | d666d3cd0ce192f4c1c31f14bdf9e7ebd21b15916385cf4ec6d27dd7329f7d6c.txt.20260829T142404Z.ots (calendar-attested; anchored in bitcoin over time) |
| Wayback | Wayback snapshot, 2026-08-29 15:04 UTC |
| Prior capture of this target | — first capture of this target |
Verify: obtain the file from the target address above, or from the Wayback snapshot below, 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 | 3,801 bytes |
|---|---|
| Canonical text SHA-256 | daffca79f05fa78ee58162672f1fe579a7b3730d49d2ba1fab051b81eb23eab1 |
| Extracted text length | 435 words |