Pierre LeBlanc (c. 1720 – July 6, 1799) was an Acadian pioneer and co-founder of Pointe-de-l'Église, Nova Scotia. Early life He was born in Grand-Pré, Nova Scotia around 1720, the son of Jacques Le B
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 0x5c7c104ebb36d08c13e483e9f5fd0e470188a39c4910ad110ce517a7947b53f5. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cfe628e4-f3bb-4040-b90a-f4614fa1c1a9.json and https://artists.proofprofile.net/proofs/artist/cfe628e4-f3bb-4040-b90a-f4614fa1c1a9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).