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 0x6353ccb8910b62947a5082bfe6a1e18a8164394fd2e52c2c65f7ba17a5dad633. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0544fd00-4d8a-44a8-8b4c-34c6b440e0cf.json and https://artists.proofprofile.net/proofs/artist/0544fd00-4d8a-44a8-8b4c-34c6b440e0cf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).