{"copyright_id":"0x28b2f22e586c82cde1f9d1cb8f1ab47c025abcad4bae483a70fac333fa6e3cbd","name":"Hasani Arthur","registered_at":"2026-06-20T16:26:08Z","symbol":"NIM1652777","token_address":"0xfb2e71d9c7eeb59fa13bbcd1f5a71f5b4ce9ba10","type":"artist","uuid":"b99cad1e-f0d1-451f-b23b-3c863e857f4d"}
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 0x28b2f22e586c82cde1f9d1cb8f1ab47c025abcad4bae483a70fac333fa6e3cbd. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b99cad1e-f0d1-451f-b23b-3c863e857f4d.json and https://artists.proofprofile.net/proofs/artist/b99cad1e-f0d1-451f-b23b-3c863e857f4d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).