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 0xb5455ba96d05d42c03db1c849dad8e43e3dbb185f455c2ebdc66ef34b7fe668f. Chain 2 (Bitcoin): anchored in block 953743 (2026-06-15T04:52:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a2b1e3f0-6a50-4a5e-a3c3-072d7d7b53d0.json and https://artists.proofprofile.net/proofs/artist/a2b1e3f0-6a50-4a5e-a3c3-072d7d7b53d0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).