Sam Fox (May 9, 1929 – December 2, 2024) was an American businessman in St. Louis, and the owner of Harbour Group Industries. He was the United States Ambassador to Belgium from April 11, 2007 until J
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 0xc8ac0d3d87a103676ec62e4c5020ebc4c6163ef5d8b61a27e7924f90e3905ee5. Chain 2 (Bitcoin): anchored in block 953899 (2026-06-16T06:37:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12653eb2-3a15-4a0e-8fce-df3685660985.json and https://artists.proofprofile.net/proofs/artist/12653eb2-3a15-4a0e-8fce-df3685660985.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).