Keith Max Jackson (October 18, 1928 – January 12, 2018) was an American sports commentator, journalist, author, and radio personality, known for his career with ABC Sports (1966–2006). While he covere
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 0xae09b115b7bf75998e49fed23ba8ab4eb3ef0f0bfc91e1bae1e907755a925dce. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/545fcfbc-f676-4d8f-b017-f6435f41a0cd.json and https://artists.proofprofile.net/proofs/artist/545fcfbc-f676-4d8f-b017-f6435f41a0cd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).