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 0xc24a29f4cb65b1e1393a309b5e96d8e4d7850e80f9441f0488c14db7e302e1f1. Chain 2 (Bitcoin): anchored in block 953701 (2026-06-14T22:16:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7599656f-4a53-4bf3-ade9-fadb242e44e7.json and https://artists.proofprofile.net/proofs/artist/7599656f-4a53-4bf3-ade9-fadb242e44e7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).