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 0xdc500e460eed0abb9c89b4c4d7e0831635472958457129cc57c1545a8f961da7. 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/af4ed7f6-c72c-48d8-84ea-5c06b61c7a91.json and https://artists.proofprofile.net/proofs/artist/af4ed7f6-c72c-48d8-84ea-5c06b61c7a91.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Frank Mcdonald, Chris Rae, Gerry Shury & Barry De Souza