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 0x572dd6a45a234def3ef62f4d3a11d5f5efae02d7d69a3bcce1b9a4f69b8f1efc. Chain 2 (Bitcoin): anchored in block 953616 (2026-06-14T08:58:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/19c466e3-d1a9-46de-982e-f399f25d3ca2.json and https://artists.proofprofile.net/proofs/artist/19c466e3-d1a9-46de-982e-f399f25d3ca2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).