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 0xb22bb5f9b1ff1fdfa91f6dd60c6b0984be59a504ca3f0e35f7b3ea2a03688e39. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/40b420f5-f17f-41c4-a4b3-7316a11c8f00.json and https://artists.proofprofile.net/proofs/artist/40b420f5-f17f-41c4-a4b3-7316a11c8f00.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).