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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720bab77849b2ef51cb4dfa8498b1860e8cc54e8d9c70e28fbdd9ebf2c124a23. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7aee60c6-45c1-4750-9e43-455ba3a16893.json and https://artists.proofprofile.net/proofs/artist/7aee60c6-45c1-4750-9e43-455ba3a16893.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nelson Rufino - 55 ANOS DE SAMBA (Ao Vivo)
Amor E Paixão/ Colcha De Algodão/ Eu E Você Sempre/ Lucidez - Ao Vivo