{"copyright_id":"0xb82bbfd9a7b0cdb9f81c083ff2395fcad6891852ffe4749be80e5a7a86bc045a","name":"Bill Plummer And The Cosmic Brotherhood","registered_at":"2026-06-16T01:19:23Z","symbol":"NIM0892319","token_address":"0xda52616b89e1a90ff56281ab54d927bd2f2c085d","type":"artist","uuid":"21db94b3-f133-41b8-acdf-8796a6a2b9ab"}
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 0xb82bbfd9a7b0cdb9f81c083ff2395fcad6891852ffe4749be80e5a7a86bc045a. Chain 2 (Bitcoin): anchored in block 953947 (2026-06-16T13:14:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/21db94b3-f133-41b8-acdf-8796a6a2b9ab.json and https://artists.proofprofile.net/proofs/artist/21db94b3-f133-41b8-acdf-8796a6a2b9ab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).