GPAI Ledger › Mythos 5.1 / Fable 5.1 (Anthropic) › Capture 13 Sep 2026

Mythos 5.1 / Fable 5.1 — capture 20260913T114644Z

Verify: sha256sum f41756d3de9092e24c3219378d1545fe8c177d177be89279a0fe9386ef435733.html.txt must equal the hash above (the filename IS the expected hash); ots verify f41756d3de9092e24c3219378d1545fe8c177d177be89279a0fe9386ef435733.html.20260913T114644Z.ots -f f41756d3de9092e24c3219378d1545fe8c177d177be89279a0fe9386ef435733.html.txt (opentimestamps.org) proves the bytes existed no later than the attestation time — an upper bound on the capture time; the fetch time above is the archive's own record (a freshly captured proof reports 'pending' here: the calendars anchor within hours, but this archive only upgrades the stored proof to its anchor on a later run, so expect a day or two). ots verify needs a local Bitcoin Core node (a pruned one is fine); without one, ots info on the proof prints the attesting block height and merkle path to check on any block explorer.

Extracted text

Machine-extracted text (layout may be lost; the authoritative content is the stored file above).

Trust Center - Anthropic

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