{"copyright_id":"0x3d713fce6ddb517a131ac590877d6f086c9ccc8f38c3b53ffd5ba572cc84e7fa","name":"Avrum Chaim Green","registered_at":"2026-06-17T08:28:35Z","symbol":"NIM1338381","token_address":"0x28da8b22c7086dcc9bf76edad6b34d803ecedbbf","type":"artist","uuid":"7afa4a5a-36df-48ea-8a53-7cb8c9cc8e80"}
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 0x3d713fce6ddb517a131ac590877d6f086c9ccc8f38c3b53ffd5ba572cc84e7fa. Chain 2 (Bitcoin): anchored in block 954097 (2026-06-17T13:13:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7afa4a5a-36df-48ea-8a53-7cb8c9cc8e80.json and https://artists.proofprofile.net/proofs/artist/7afa4a5a-36df-48ea-8a53-7cb8c9cc8e80.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).