{"copyright_id":"0xaff5e3297caac0e2c385f47ff02fe1edb2e5ffec986daf7faa67fb32138b0721","name":"Burning Casablanca / Zanka Contact","registered_at":"2026-06-20T15:18:49Z","symbol":"NIM1639223","token_address":"0xe49372edef36243e68de8e67bacd13f8a0bc1590","type":"artist","uuid":"b60cfd01-c8b1-4553-8563-7c368ba3b2f0"}
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 0xaff5e3297caac0e2c385f47ff02fe1edb2e5ffec986daf7faa67fb32138b0721. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b60cfd01-c8b1-4553-8563-7c368ba3b2f0.json and https://artists.proofprofile.net/proofs/artist/b60cfd01-c8b1-4553-8563-7c368ba3b2f0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).