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 0xae9d783a2b3d3bf14408849288cf9bed40b7756d4f89141ecab7781fc6d8c47e. Chain 2 (Bitcoin): anchored in block 953599 (2026-06-14T06:43:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0e89f9a8-32fa-49e9-ba72-aeb8ad2c45fe.json and https://artists.proofprofile.net/proofs/artist/0e89f9a8-32fa-49e9-ba72-aeb8ad2c45fe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).