David Allen Johnson (January 30, 1943 – September 5, 2025) was an American professional baseball player and manager. He played as a second baseman from through , most notably in Major League Baseball
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 0x5385048b9e79d9629f808f8da0b7796aff9a059414f21cc5609f69990ab0eb6e. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/781babc2-bfa2-4888-b358-8988bc22d31c.json and https://artists.proofprofile.net/proofs/artist/781babc2-bfa2-4888-b358-8988bc22d31c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).