GPAI Ledger › Claude Opus 4.8 (Anthropic) › Capture 31 Aug 2026
Claude Opus 4.8 — capture 20260831T105325Z
| Provider | Anthropic |
|---|---|
| Target | AIAL evaluation page — https://raw.githubusercontent.com/AIAccountabilityLab/gpai-training-transparency/06ddb124fa2483d962c846bc0ea88b030295607a/public/evals/claude-opus-4-8/index.html |
| Fetched (UTC) | 2026-08-31T10:53:25Z |
| Upstream commit | 5 Aug 2026 — 06ddb124fa24 (when this state began to stand in the upstream repository; this archive fetched it at the time above, not then) |
| Stored file | 20,385 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 | bdb634e8df339aa55583877b009d91f34caa0168095806b9bd55fa8ca9a07519 |
| OpenTimestamps proof | bdb634e8df339aa55583877b009d91f34caa0168095806b9bd55fa8ca9a07519.html.20260831T105325Z.ots (calendar-attested; anchored in bitcoin over time) |
| Wayback | not saved |
| Prior capture of this target | d9eed854057acdc525f29504b14e06a4888ce45990bb37500f9da3b27ef710bb (captured 2026-08-31T10:48:37Z) |
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 | 20,385 bytes |
|---|---|
| Canonical text SHA-256 | 5dcb6a909aecb94757978dd1539bcc158266b2971b974e92b694d353456bf786 |
| Extracted text length | 791 words |