Maxime Giroux (born 16 April 1976) is a film director from Quebec, Canada. Giroux was born in Montreal, Quebec. He has directed several short films, videoclips and commercial videos. In 2006, his fil
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 0xac3f8a6205908e3091c2ade7362b1d45f0651bd6ece3713b6e385c29f784b4f6. Chain 2 (Bitcoin): anchored in block 953667 (2026-06-14T17:49:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/57327ea5-acee-4fcf-98fc-f21b2df501ec.json and https://artists.proofprofile.net/proofs/artist/57327ea5-acee-4fcf-98fc-f21b2df501ec.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.