1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824068dde2a643aadf9ebb9e71f3c2c2a8ab20e6ef39b162f4164119d812033a. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/100a1dff-e06c-4fc4-8caa-e0c95f63b319.json and https://artists.proofprofile.net/proofs/artist/100a1dff-e06c-4fc4-8caa-e0c95f63b319.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).