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 0xfbefbd7d48e8eacd4f02626862c17fc5f763e6a87e24d6cbb9beddf23d9cdd1f. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ae9f06d6-3ec1-4b37-ac58-c36a06b200f6.json and https://artists.proofprofile.net/proofs/artist/ae9f06d6-3ec1-4b37-ac58-c36a06b200f6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).