Esquire (, ; abbreviated Esq.) is usually a courtesy title. In the United Kingdom, esquire historically was a title of respect accorded to men of higher social rank, particularly members of the lande
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 0xbfd1303a518ee288f35ada15a18c7712ee30c52b0a9fef6b54162bef33a532fe. Chain 2 (Bitcoin): anchored in block 954115 (2026-06-17T15:44:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/768f061d-e017-4ae6-a085-6593c0c5fce8.json and https://artists.proofprofile.net/proofs/artist/768f061d-e017-4ae6-a085-6593c0c5fce8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).