David Gene Parker (June 9, 1951 – June 28, 2025), nicknamed "the Cobra", was an American professional baseball player. He played in Major League Baseball as a right fielder from 1973 to 1991. A seven
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 0x1d76f33a103315a3d1b1251b2de252f1942e30ba936b215dd25da6e31a328f66. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/89cb193f-5461-442e-96c8-e2d191bab86a.json and https://artists.proofprofile.net/proofs/artist/89cb193f-5461-442e-96c8-e2d191bab86a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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