Jean-Pierre Cassel (; born Jean-Pierre Crochon; 27 October 1932 – 19 April 2007) was a French actor and dancer. A popular star of French cinema, he was initially known for his comedy film appearances,
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 0xf021a0045b61076518fa72236a86651f24ca2eea25a9b82e87e93799d052536f. Chain 2 (Bitcoin): anchored in block 954015 (2026-06-16T22:55:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/347217ae-4b25-4e60-a236-f9c0977136e9.json and https://artists.proofprofile.net/proofs/artist/347217ae-4b25-4e60-a236-f9c0977136e9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Le long voyage du pingouin vers la jungle (Collection Les histoires du Pince Oreille)
Miguel de Cervantès : Don Quichotte (A partir de 6 ans)
Les inestimables chroniques du bon géant Gargantua