thumb|right|Jeb Bishop Jeb Bishop (born 1962) is an American jazz trombone player. Biography right|thumb|Bishop at mœrs festival 2010 right|thumb|Bishop and Kent Kessler playing with Peter Brötzma
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 0x9bbf56d55b419d53d38f53aa8504a2bf0286ff9e95b39bdfd11deab135d5f30e. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b6ac0b60-5def-46f3-9304-3d1faebfe901.json and https://artists.proofprofile.net/proofs/artist/b6ac0b60-5def-46f3-9304-3d1faebfe901.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).