{"copyright_id":"0xcf8fdefb7c3b104f5a342400f5f7e19b2e5cda0bafc8dde6df42bd1e48de4dcc","name":"Ada K. Holmes","registered_at":"2026-06-17T19:33:15Z","symbol":"NIM1496891","token_address":"0x73d2c2e8d8fb967a5c3eb202ba9e6836f9edc6fe","type":"artist","uuid":"9a653e0c-0f9e-4c15-be4b-7b7ee4b89b92"}
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 0xcf8fdefb7c3b104f5a342400f5f7e19b2e5cda0bafc8dde6df42bd1e48de4dcc. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9a653e0c-0f9e-4c15-be4b-7b7ee4b89b92.json and https://artists.proofprofile.net/proofs/artist/9a653e0c-0f9e-4c15-be4b-7b7ee4b89b92.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).