Mary Clare Absalom (17 July 1892Who's Who, A. & C. Black, 1968, p. 571 – 29 August 1970)Silent Film Necrology, second edition, Eugene M. Vazzana, McFarland Publishing, 2001, p. 91Obituaries from the T
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38bb4eb90448125a01d1b672ea6faed536bb0d821711456fb2b8ea0b2e42b76d. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/24b0b198-445b-4c30-9291-c193ad30b3c1.json and https://artists.proofprofile.net/proofs/artist/24b0b198-445b-4c30-9291-c193ad30b3c1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).