Sir Charles Matthew Farrer, (3 December 1929 – 21 May 2023) was private solicitor to the Queen Elizabeth II from 1965 to 1994. He was a senior partner with Farrer & Co. He was the son of Sir Leslie F
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 0x7df10a9dd23434f328e636722ec8071e47edf712638c6ca48145f930e695d08c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8d7b12d5-89b1-4f47-81f0-4e1daa53b993.json and https://artists.proofprofile.net/proofs/artist/8d7b12d5-89b1-4f47-81f0-4e1daa53b993.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).