{"copyright_id":"0xbe7b2fad9fe9c298feeb8fc76ad0d9ba7de0c273895168dd2ac1f1c65362244f","name":"Grayout D.C","registered_at":"2026-06-20T04:18:23Z","symbol":"NIM1509550","token_address":"0xbbbf07af9df2ecd4b375e85ae1b5dd1ebfdca69d","type":"artist","uuid":"9cbfeb9d-5c01-4c51-bef4-6fb0dd7c5e27"}
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 0xbe7b2fad9fe9c298feeb8fc76ad0d9ba7de0c273895168dd2ac1f1c65362244f. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9cbfeb9d-5c01-4c51-bef4-6fb0dd7c5e27.json and https://artists.proofprofile.net/proofs/artist/9cbfeb9d-5c01-4c51-bef4-6fb0dd7c5e27.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).