1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x766b8348da30a1c0e9d5e5a7a648cd0aebf6288e583dca880fab8ab25023ce5d. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c207821e-57a9-4e8e-b2fe-e487d11a298b.json and https://artists.proofprofile.net/proofs/artist/c207821e-57a9-4e8e-b2fe-e487d11a298b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Canción de los Veteranos del Real Sporting de Gijón