{"copyright_id":"0x3dd1bff1f6f9cd86591c7fd6f75e9bdf910f9ead1ab46cfecebad38cc9dff0ea","name":"Fleming Stein","registered_at":"2026-06-21T17:17:23Z","symbol":"NIM1983694","token_address":"0xf18215b8feefb52b441b931519cd09ce2ff939c1","type":"artist","uuid":"fbcfb6cb-a51f-4adf-b7be-f343c5508298"}
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 0x3dd1bff1f6f9cd86591c7fd6f75e9bdf910f9ead1ab46cfecebad38cc9dff0ea. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fbcfb6cb-a51f-4adf-b7be-f343c5508298.json and https://artists.proofprofile.net/proofs/artist/fbcfb6cb-a51f-4adf-b7be-f343c5508298.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).