Ambrosian Opera Chorus, I Solisti Veneti & Claudio Scimone
{"copyright_id":"0xf8cd3fa56d644a683ee65e71d6af629145b64ace1351a73cb39cc5def8c4da1b","name":"Ambrosian Opera Chorus, I Solisti Veneti & Claudio Scimone","registered_at":"2026-06-17T09:37:13Z","symbol":"NIM1354748","token_address":"0x4d86912c531ff60e994e0e6409366f5bdba38d2c","type":"artist","uuid":"7e6087c9-18fa-404d-a2d1-31c6f9eb4419"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cd3fa56d644a683ee65e71d6af629145b64ace1351a73cb39cc5def8c4da1b. Chain 2 (Bitcoin): anchored in block 954134 (2026-06-17T19:41:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e6087c9-18fa-404d-a2d1-31c6f9eb4419.json and https://artists.proofprofile.net/proofs/artist/7e6087c9-18fa-404d-a2d1-31c6f9eb4419.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).