Mark Lanze Cole (born June 6, 1958) is an American politician of the Republican Party. From 2002 until 2022 he was a member of the Virginia House of Delegates. He represented the 88th district in the
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 0x0b9a5710176f6c7f0fa3f5be27150be61e9fd55080e944e8cad1dd7886ff41b1. Chain 2 (Bitcoin): anchored in block 954035 (2026-06-17T02:39:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3d3f5448-01bf-4f4a-81b1-ebff3ae00f8b.json and https://artists.proofprofile.net/proofs/artist/3d3f5448-01bf-4f4a-81b1-ebff3ae00f8b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).