alt=1929 photograph of United States Representative Charles A. Eaton and his nephew Rep. William R. Eaton.|thumb|United States Representative Charles A. Eaton (right) and his nephew Rep. William R. Ea
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa195a99c10e704c94a376355a0a4e1f6b164903d78e5a9e5df26c788593e4e. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cbd14472-3ef9-456d-a1b1-df14ee1ec726.json and https://artists.proofprofile.net/proofs/artist/cbd14472-3ef9-456d-a1b1-df14ee1ec726.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).