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 0x0da2495a1698ea6ba5ec2216a2a2c938eb345a7b2a109b91a4ed0efbd27ea8ba. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a63eded-e425-4708-a7d5-e4b0fd52026d.json and https://artists.proofprofile.net/proofs/artist/7a63eded-e425-4708-a7d5-e4b0fd52026d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).