thumb|upright|Nigel Kennedy Szczawnica – Jaworki, Poland Nigel Kennedy (born 28 December 1956) is an English musician and composer. He plays the violin, viola and piano. His early career was prima
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 0xb99d8ab533756659cfbb7167608acd6fcf86f7dec7d593bb548171241502bc1c. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3f13dda-5c5c-4e10-8004-46ba442c2a4d.json and https://artists.proofprofile.net/proofs/artist/e3f13dda-5c5c-4e10-8004-46ba442c2a4d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).