{"copyright_id":"0xc2c2ab1c3503eef2d05e60548fa7b010103f85be06f854c5c06c8ff6a51e4cc5","name":"Filhos de Dona Maria","registered_at":"2026-06-17T09:29:39Z","symbol":"NIM1352943","token_address":"0x6dcdfbac1bee46fe9008fefeef9b016d0ac2b24b","type":"artist","uuid":"7db4a9f2-ba57-48f3-aebc-59b2cec9e0fa"}
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 0xc2c2ab1c3503eef2d05e60548fa7b010103f85be06f854c5c06c8ff6a51e4cc5. Chain 2 (Bitcoin): anchored in block 954131 (2026-06-17T19:19:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7db4a9f2-ba57-48f3-aebc-59b2cec9e0fa.json and https://artists.proofprofile.net/proofs/artist/7db4a9f2-ba57-48f3-aebc-59b2cec9e0fa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).