GPAI Ledger › Claude Opus 4.8 (Anthropic) › Capture 31 Aug 2026
Claude Opus 4.8 — capture 20260831T111207Z
| Provider | Anthropic |
|---|---|
| Target | AIAL evaluation page — https://raw.githubusercontent.com/AIAccountabilityLab/gpai-training-transparency/6da9b3fc0d502cd8720a20cd4e9a4f0ce6f8b451/public/evals/claude-opus-4-8/index.html |
| Fetched (UTC) | 2026-08-31T11:12:07Z |
| Upstream commit | 6 Aug 2026 — 6da9b3fc0d50 (when this state began to stand in the upstream repository; this archive fetched it at the time above, not then) |
| Stored file | 20,514 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 | a542b6d024e37c97f83a9df4acf1cad8722a68c7227b7f3016e6e9b5db096ce0 |
| OpenTimestamps proof | a542b6d024e37c97f83a9df4acf1cad8722a68c7227b7f3016e6e9b5db096ce0.html.20260831T111207Z.ots (calendar-attested; anchored in bitcoin over time) |
| Wayback | not saved |
| Prior capture of this target | 31774e227316197792cee3c44eba4a6256ec5a638feaed2e5030f5f18149c542 (captured 2026-08-31T11:04:13Z) |
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 | 20,514 bytes |
|---|---|
| Canonical text SHA-256 | c8078daba1aa57224078d07f988ab7a35e970d10615a3821cab0769dfd4e69eb |
| Extracted text length | 791 words |