Los Angeles Chamber Orchestra, G. Schwarz, Vivaldi Baroque Group
{"copyright_id":"0x03bd53861ef9eb4f2ccc42d8c41c8899800464407a6674d2bb63cdb4eea82c9a","name":"Los Angeles Chamber Orchestra, G. Schwarz, Vivaldi Baroque Group","registered_at":"2026-06-16T21:20:07Z","symbol":"NIM1178924","token_address":"0x40c03a813d9eee7d83eba5366abbb27c8d60af42","type":"artist","uuid":"5a27c9d6-8840-453c-9d1a-cc29175a6a5b"}
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 0x03bd53861ef9eb4f2ccc42d8c41c8899800464407a6674d2bb63cdb4eea82c9a. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5a27c9d6-8840-453c-9d1a-cc29175a6a5b.json and https://artists.proofprofile.net/proofs/artist/5a27c9d6-8840-453c-9d1a-cc29175a6a5b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).