{"copyright_id":"0x7636fe829ed533bfc9b6e1707f0c8756060acf62e65d9a7c30b96eefdfe27125","name":"Salmista Daniel Sarmiento","registered_at":"2026-06-16T03:51:51Z","symbol":"NIM0928737","token_address":"0x3c7ac8c4d20b1cf2f591c12bfefacea70cd26dea","type":"artist","uuid":"293bbedc-2709-40a9-89ed-b491afd31d5a"}
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 0x7636fe829ed533bfc9b6e1707f0c8756060acf62e65d9a7c30b96eefdfe27125. Chain 2 (Bitcoin): anchored in block 953968 (2026-06-16T16:01:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/293bbedc-2709-40a9-89ed-b491afd31d5a.json and https://artists.proofprofile.net/proofs/artist/293bbedc-2709-40a9-89ed-b491afd31d5a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).