Matthew Flowers (born 1956) is a British contemporary art dealer based in London and New York. He is the managing director of Flowers Gallery. Throughout his career he has been on boards and committee
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 0x54e085569c7eeb778d5a19c6cd56b8185f843aef8885730fef054f5190d56229. Chain 2 (Bitcoin): anchored in block 954025 (2026-06-17T00:32:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/386c9cf6-e216-4f8d-a967-2bbba8fc36b2.json and https://artists.proofprofile.net/proofs/artist/386c9cf6-e216-4f8d-a967-2bbba8fc36b2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).