{"copyright_id":"0x68da2dca33ec75e4abf86aabad33bd5ba45214bddd992bd24fce4da35bddd84f","name":"Didine Canon 16 ft SAMARA","registered_at":"2026-06-16T02:42:50Z","symbol":"NIM0912265","token_address":"0x5e4f108e68c0cf5b17100c100abfdc9c2c97b44f","type":"artist","uuid":"25eb63e6-0d57-4ddc-819e-f8264c81ee4d"}
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 0x68da2dca33ec75e4abf86aabad33bd5ba45214bddd992bd24fce4da35bddd84f. Chain 2 (Bitcoin): anchored in block 953954 (2026-06-16T14:18:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/25eb63e6-0d57-4ddc-819e-f8264c81ee4d.json and https://artists.proofprofile.net/proofs/artist/25eb63e6-0d57-4ddc-819e-f8264c81ee4d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).