David Ernest Duke (born July 1, 1950) is an American politician, white supremacist, neo-Nazi, conspiracy theorist, and former grand wizard of the Knights of the Ku Klux Klan. From 1989 to 1992, 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 0x3fec03bc5c7d3fe28a7cf736d7e63a20efd3c5ee5b6270eb805cf317a8109af2. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/80dc0d30-56b2-4dbb-8666-d3ae40cb88e2.json and https://artists.proofprofile.net/proofs/artist/80dc0d30-56b2-4dbb-8666-d3ae40cb88e2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).