{"copyright_id":"0xde49855638698b38ffe8d2c1004eca6f16ba0c69c2ed0c6355bb27ffb65acbdb","name":"NGIAMA MAKANDA WERRASON","registered_at":"2026-06-20T19:21:56Z","symbol":"NIM1689405","token_address":"0xcbbf0075abd6c8dc6ac08657de915464db8e5af2","type":"artist","uuid":"c10eeef4-e504-44ce-99f6-87c2db9cd64a"}
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 0xde49855638698b38ffe8d2c1004eca6f16ba0c69c2ed0c6355bb27ffb65acbdb. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c10eeef4-e504-44ce-99f6-87c2db9cd64a.json and https://artists.proofprofile.net/proofs/artist/c10eeef4-e504-44ce-99f6-87c2db9cd64a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).