Isidore Cohen/Virginia Benz/Alvin Brehm/Timothy Eddy/Felix Galimir/John Graham/Robert Johnson/New York Philomusica/Robert Johnson
{"copyright_id":"0x2e22af1c7738648d665f6aad12381995cc87671513f3ad4c93fb5bb08764138c","name":"Isidore Cohen/Virginia Benz/Alvin Brehm/Timothy Eddy/Felix Galimir/John Graham/Robert Johnson/New York Philomusica/Robert Johnson","registered_at":"2026-06-20T07:31:02Z","symbol":"NIM1558039","token_address":"0x739d20c081401c9c3d27b6a1e8dd1daaedbfda41","type":"artist","uuid":"a6d13b95-8ee2-4b42-872e-1acb19c0c587"}
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 0x2e22af1c7738648d665f6aad12381995cc87671513f3ad4c93fb5bb08764138c. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a6d13b95-8ee2-4b42-872e-1acb19c0c587.json and https://artists.proofprofile.net/proofs/artist/a6d13b95-8ee2-4b42-872e-1acb19c0c587.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).