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 0x8cfae2a460ec2bf20aa96083b5a3ef3e46cc70174906adb4ea785286f330020d. Chain 2 (Bitcoin): anchored in block 953621 (2026-06-14T09:42:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/216c7a73-0aca-45db-a4a6-de0115487d14.json and https://artists.proofprofile.net/proofs/artist/216c7a73-0aca-45db-a4a6-de0115487d14.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Grupo Contingencia En Vivo Vol.1 "Puros Corridos"