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 0x0efd3db8004fbaabf53ea5507e0af5424ecf74fd2fb3e246c3db127cf78a0d8e. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/65e20392-1b78-4278-9c1a-2be4bef2a23e.json and https://artists.proofprofile.net/proofs/artist/65e20392-1b78-4278-9c1a-2be4bef2a23e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).