Thomas Marius Joseph Butler BBC Tommy Butler profile. Retrieved 20 December 2013 (21 July 1912 – 20 April 1970) was a Detective Chief Superintendent in the Metropolitan Police in London. He was most n
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 0x884d0e689a922d32c3c6ece784cea03f4a0e884f1f579c2db055ed36ece5869b. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a4e793d1-8e52-467a-87be-f17d19ce75e7.json and https://artists.proofprofile.net/proofs/artist/a4e793d1-8e52-467a-87be-f17d19ce75e7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).