Jeremiah Léoda Gauthier (December 29, 1904 – January 17, 1964) was a Canadian Member of Parliament from 1945 to 1958.C.M. Wallace and Ashley Thomson, Sudbury: Rail Town to Regional Capital. Dundurn Pr
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 0xb5968d4c7ecd6f4702b82b0767dc20f82fc00f102edefcc9c7fc2614791fba43. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5d7300da-b224-45ee-8234-6aa4f91eceea.json and https://artists.proofprofile.net/proofs/artist/5d7300da-b224-45ee-8234-6aa4f91eceea.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).