Thomas Michael Shannon (July 15, 1939 – April 29, 2023) was an American professional baseball third baseman and right fielder. He played in Major League Baseball (MLB) for the St. Louis Cardinals from
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 0x8f38204a94f34bf0b30ea4f4c13273be271e302cfc09c41c5bd20254e5028182. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b06eebf7-f8e4-4303-8505-4671f4cdbd30.json and https://artists.proofprofile.net/proofs/artist/b06eebf7-f8e4-4303-8505-4671f4cdbd30.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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