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 0xa43036b20e6fb7186f7d27d178e41435e2656698d559c799b6bee2f144a7c7d1. Chain 2 (Bitcoin): anchored in block 954556 (2026-06-20T12:14:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ade1ad68-d772-4929-81bb-736a94fb1762.json and https://artists.proofprofile.net/proofs/artist/ade1ad68-d772-4929-81bb-736a94fb1762.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
G.Curciotti: Guitar Dances of Spain & Latin America
Vuelvo al Sur (Spanish and South American Music)