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 0x8f80abacd62ab568a2ddc1134f4bb21a98ea927d36438ce25145110e7b187d62. Chain 2 (Bitcoin): anchored in block 953860 (2026-06-15T23:55:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/029721e8-6d4a-4306-93c8-c01883ff1a02.json and https://artists.proofprofile.net/proofs/artist/029721e8-6d4a-4306-93c8-c01883ff1a02.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Boogie de la baleine / Thanking of you (Mono Version)
Classiques du jazz, No. 2 (feat. R. Duchossoir, L. Simoens, A. Motta) [Mono Version]