Ensemble Gilles Binchois/Dominique Vellard/Georges Lartigau
{"copyright_id":"0xa5b2d3b34c017c895a7120fc8b5fd56c00d802cd5f44d11bf1bf06dc9a443d86","name":"Ensemble Gilles Binchois/Dominique Vellard/Georges Lartigau","registered_at":"2026-06-15T23:39:44Z","symbol":"NIM0868540","token_address":"0xe5fbc6867eaa93897b7af0f2b1d6a1110e2e9b27","type":"artist","uuid":"1d08f501-baf9-488f-9a06-1376f5c2d80c"}
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 0xa5b2d3b34c017c895a7120fc8b5fd56c00d802cd5f44d11bf1bf06dc9a443d86. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d08f501-baf9-488f-9a06-1376f5c2d80c.json and https://artists.proofprofile.net/proofs/artist/1d08f501-baf9-488f-9a06-1376f5c2d80c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).