{"copyright_id":"0xce27aadd2738ebbd1615bcd09b9a44eee62209c0b301bd97e74ae90a45049bfd","name":"New Leipzig Bach Collegium Musicum","registered_at":"2026-06-15T17:12:38Z","symbol":"NIM0776186","token_address":"0xd08de704addafd92a5897e29024040f54b304e59","type":"artist","uuid":"0a692aeb-9cae-4feb-a2d4-a3a993e913c2"}
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 0xce27aadd2738ebbd1615bcd09b9a44eee62209c0b301bd97e74ae90a45049bfd. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0a692aeb-9cae-4feb-a2d4-a3a993e913c2.json and https://artists.proofprofile.net/proofs/artist/0a692aeb-9cae-4feb-a2d4-a3a993e913c2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).