Louis Seigner (23 June 1903 – 20 January 1991) was a French actor.thumb|Plaque where died Louis Seigner in the fire of the building: 12 rue Pierre-et-Marie-Curie, Paris 5th arrond.|leftHe was born in
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6a433a9d7d1f0edb648277b2ed6ab7c03005ba61c268dbbf9e850d3ae288af. 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/4b1b8262-fd54-44d2-b2d6-61a0aa441b41.json and https://artists.proofprofile.net/proofs/artist/4b1b8262-fd54-44d2-b2d6-61a0aa441b41.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).