{"copyright_id":"0xe131bcdfa4aa490f21140bc93616ad13ee69a66dff0e16b2ab1c51ddfa1b0ba8","name":"Instrumental Christmas Jazz","registered_at":"2026-06-17T09:09:11Z","symbol":"NIM1348050","token_address":"0xff6f69c741a5faa79584879f34be9babfc434455","type":"artist","uuid":"7cb6ab2d-0b6c-48dc-a2e4-b30649f9acf3"}
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 0xe131bcdfa4aa490f21140bc93616ad13ee69a66dff0e16b2ab1c51ddfa1b0ba8. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7cb6ab2d-0b6c-48dc-a2e4-b30649f9acf3.json and https://artists.proofprofile.net/proofs/artist/7cb6ab2d-0b6c-48dc-a2e4-b30649f9acf3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).