Ensemble Orchestral Harmonia Nova & Didier Bouture
{"copyright_id":"0x753f8150b59b6adb38e9df74b0c7a04b52a0d8f6238868bea2c11e1265fb69bb","name":"Ensemble Orchestral Harmonia Nova & Didier Bouture","registered_at":"2026-06-12T00:45:16Z","symbol":"NIM0146328","token_address":"0xe3a10493567fc61cde816479ee9e19b7e0e04efb","type":"artist","uuid":"6fdcf6ef-eb6a-4603-9e1e-df1a10a822dc"}
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 0x753f8150b59b6adb38e9df74b0c7a04b52a0d8f6238868bea2c11e1265fb69bb. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6fdcf6ef-eb6a-4603-9e1e-df1a10a822dc.json and https://artists.proofprofile.net/proofs/artist/6fdcf6ef-eb6a-4603-9e1e-df1a10a822dc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Johann Sebastian Bach, Michel Richard Delalande, Henry Purcell, Antonio Vivaldi, Wolfgang Amadeus Mozart: L'Europe Musicale des XVII et XVII