James Gordon Brown (born 20 February 1951) is a British politician who served as Prime Minister of the United Kingdom and Leader of the Labour Party from 2007 to 2010. Previously, he was Chancellor of
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 0x16a9e5488c142cae62addd57b9d07bd388464b89cec78b8b5ae9bac02fb45c33. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fc2e1a37-a519-469b-b79d-0ebbb04aac9e.json and https://artists.proofprofile.net/proofs/artist/fc2e1a37-a519-469b-b79d-0ebbb04aac9e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).