Isaac Jackson (April 16, 1952 – December 20, 1999) was an American football standout running back who played for Lanier High School and the Kansas State University Wildcats in the early 1970s. He was
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 0xcdc93b0f73e021cff9f90f77d8f79d7a5da9d8c9ee68f84ca12c6752f76de277. Chain 2 (Bitcoin): anchored in block 954085 (2026-06-17T10:45:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7aa604c9-56bd-4ed9-a1ec-348574d7ae1a.json and https://artists.proofprofile.net/proofs/artist/7aa604c9-56bd-4ed9-a1ec-348574d7ae1a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).