Louis Beydts (/bets/) was a French composer, music critic and theatre director, born 29 June 1895 in Bordeaux and died on 15 August 1953 at Caudéran in Gironde. Life and career His father was a wine-
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 0x8f146a0216aad0ef5630d9bb6183188b7fe77cf1c93ce78110b063686e6f9dc6. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/64684e4a-3f95-4357-9475-9179b81cfc51.json and https://artists.proofprofile.net/proofs/artist/64684e4a-3f95-4357-9475-9179b81cfc51.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La Société Anonyme des Messieurs Prudents
La S.A.D.M.P. (La Société Anonyme des Messieurs Prudents)
Louis Beydts: Cinq Humoresques: II. À la fontaine
Louis Beydts: Chansons pour les oiseaux: IV. Le Petit serin en cage