thumb|Nat (1 February 1914) Yves Philippe Avit Nat (29 December 1890 – 31 August 1956) was a French pianist and composer. Biography Nat was born in Béziers and showed an early aptitude for both pian
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 0xbdd96d2a432fe7f3f80fe73c795534df3212c496abb49ba587fea01058a7d34a. Chain 2 (Bitcoin): anchored in block 954046 (2026-06-17T04:53:03Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/414dc1f7-7c4c-4643-94ee-656581060e9e.json and https://artists.proofprofile.net/proofs/artist/414dc1f7-7c4c-4643-94ee-656581060e9e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Schumann: Concerto pour piano, Op. 54 - Franck: Variations symphoniques (Mono Version)
Hommage à Yves Nat (Collection trésors, remasterisé, mono version)
Beethoven: Piano Sonata - Schumann: Fantasia & Kinderszenen
Beethoven: Sonate 'Au Clair de Lune' en do dièse mineur, Op. 27 No. 2
Beethoven: Sonate 'Appassionata' en fa mineur, Op. 57
Beethoven: Sonate No. 15 en ré majeur pour piano, Op. 28 'Pastorale'
Beethoven: Sonate No. 18 en mi bémol majeur pour piano, Op. 31 No. 3
Beethoven: Sonate 'Pathétique' en do mineur, Op. 13