Jacques Beauchamp (February 4, 1927September 17, 1988) was a Canadian sports journalist. During his 25-year tenure at the Montréal-Matin, he became the first reporter to follow the Montreal Canadiens
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 0x5a6f796a9b6c2a954b3fc7bf4520732f43942491c3447346dd16897e7672f5c7. 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/135d7a00-91e1-4807-8fad-ee63d862e57b.json and https://artists.proofprofile.net/proofs/artist/135d7a00-91e1-4807-8fad-ee63d862e57b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).