George "Buster" Cooper (April 4, 1929 – May 13, 2016) was an American jazz trombonist. Career A native of St. Petersburg, Florida, United States, Cooper played in a territory band with Nat Towles in
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 0xb5414ee6925e333e5b4e341dd78f3a10babf40b4a2d67270be541aa265e124f9. Chain 2 (Bitcoin): anchored in block 953984 (2026-06-16T18:08:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2daf33ee-12a9-4762-bc1d-b2e98b252385.json and https://artists.proofprofile.net/proofs/artist/2daf33ee-12a9-4762-bc1d-b2e98b252385.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).