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 0x94b981b4ff1328fdf5389d27cdadd760228e582bfb6455f81f8d8f0c015845cc. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bde73b13-5be7-446b-967a-c121bdb754d6.json and https://artists.proofprofile.net/proofs/artist/bde73b13-5be7-446b-967a-c121bdb754d6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
thoroughly depressed everyone then happily left