thumb|upright|Richardson in 1970 James Anthony Richardson (born 16 February 1941, Tottenham, London) is an English jazz and rock bassist and session musician. He was a member of the progressive rock
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 0x9d6ecf7504b02dcacb3269703f0cccc00c6a035f92757aeb108964dd1f512c34. 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/6f4081c6-c93a-4f5d-9959-46d3551ffe29.json and https://artists.proofprofile.net/proofs/artist/6f4081c6-c93a-4f5d-9959-46d3551ffe29.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).