Gerald Anthony Coles (1929–2004) was an English painter, printmaker, and stained glass designer. Born in Luton, Bedfordshire, he was trained at the Luton School of Art (1943–45) before working for th
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb50667ca05a01d1a3acdcd10745be16cfa8670ad015f4845d832c1b0cc7e3fd. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d7c5e6ae-e731-4220-b052-689404811344.json and https://artists.proofprofile.net/proofs/artist/d7c5e6ae-e731-4220-b052-689404811344.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).