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 0xce17e08616c5cbc54b7ee9a3dfd9e0054aaf6b10d3b992e9bbd916e92134360f. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a48f68ef-1bb0-4c83-9023-62afe585c5bf.json and https://artists.proofprofile.net/proofs/artist/a48f68ef-1bb0-4c83-9023-62afe585c5bf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tchaikovski: Symphonie 6 "Pathétique"-Capriccio italien
Tchaikovski: Symphonie 4-Borodine: Dans les steppes de l'Asie centrale-Moussorgski: Une nuit sur le mont chauve
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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
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Beethoven, Schubert & Mendelssohn: Works for Violin
Violin Concerto In E Minor, Op. 64, MWV O14: 1. Allegro molto appassionato
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Concerto for Flute, Harp, and Orchestra in C Major, K. 299: 2b. Andantino - Pt. 2
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Symphony No. 5 in C Minor, Op. 67: 1. Allegro con brio
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Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": 1. Adagio sostenuto
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Violin Concerto in D major, Op. 61: 3. Rondo. Allegro
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Symphony No. 7 in A Major, Op. 92: 2. Allegretto
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Piano Concerto No. 3 In C Minor, Op. 37: 2. Largo
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Mozart: Piano Concerto No. 21 in C Major, K. 467: II. Andante (Excerpt)
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Tchaikovsky: Romeo and Juliet, Fantasy Overture (Excerpt)
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Saint-Saëns: Le carnaval des animaux, R 125: XIII. Le cygne
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Rachmaninov: Piano Concerto No. 2 in C Minor, Op. 18: I. Moderato (Excerpt)
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Khachaturian: Suite from Spartacus No. 2: I. Adagio of Spartacus and Phrygia (Excerpt)
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Shostakovich: Piano Concerto No. 2 in F Major, Op. 102: II. Andante (Excerpt)
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Elgar: Cello Concerto in E Minor, Op. 85: I. Adagio - Moderato
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Verdi: La traviata, Act 1: Prelude (Excerpt)
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Vaughan Williams: Fantasia on a Theme by Thomas Tallis (Excerpt)
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Debussy: Prélude à l'après-midi d'un faune, CD 87, L. 86 (Excerpt)
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Schubert: String Quintet in C Major, Op. 163, D. 956: II. Adagio (Excerpt)
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Bruch: Violin Concerto No. 1 in G Minor, Op. 26: II. Adagio (Excerpt)
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Tchaikovsky: Swan Lake, Op. 20, Act II: No. 10, Scene. Moderato (Excerpt)
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Chopin: Piano Concerto No. 2 in F Minor, Op. 21: II. Larghetto (Excerpt)
Orchestre National de l'Opéra de Monte-Carlo
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Mahler: Symphony No. 5 in C-Sharp Minor: IV. Adagietto. Sehr langsam (Excerpt)
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Puccini : Manon Lescaut : Act 3 Intermezzo
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Mozart: Clarinet Concerto in A Major, K. 622: II. Adagio (Excerpt)
Orchestre de chambre Jean-François Paillard
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Beethoven: Piano Concerto No. 5 in E-Flat Major, Op. 73 "Emperor": II. Adagio un poco mosso
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Vivaldi: Mandolin Concerto in D Major, RV 93: II. Largo
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Rachmaninov: Piano Concerto No. 2 in C Minor, Op. 18: II. Adagio sostenuto (Excerpt)
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Elgar: Variations on an Original Theme, Op. 36 "Enigma": Variation IX. Nimrod
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Borodin: String Quartet No. 2 in D Major: III. Notturno (Excerpt)
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Schumann: Kinderszenen, Op. 15: No. 7, Träumerei
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Wagner : Tristan und Isolde : Act 3 Isoldes Liebestod [Orchestral Version]
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Tchaikovsky: Violin Concerto in D Major, Op. 35: II. Canzonetta. Andante (Excerpt)
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Chopin: 24 Preludes, Op. 28: No. 4 in E Minor
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Albinoni: Oboe Concerto in D Minor, Op. 9 No. 2: II. Adagio
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Tchaikovsky: Symphony No. 6 in B Minor, Op. 74 "Pathétique": I. Adagio - Allegro non troppo
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Brahms: Piano Concerto No. 2 in B-Flat Major, Op. 83: III. Andante
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Villa-Lobos: Bachianas Brasileiras No. 5 : I. Aria (Adagio)
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Bach, JS / Transcr. Tureck for Guitar: Keyboard Concerto No. 5 in F Minor, BWV 1056: II. Largo
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Liszt: Liebesträum No. 3 in A-Flat Major, S. 541
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Shostakovich / Arr. Atovmyan: Suite from the Gadfly, Op. 97a: VIII. Romance (Excerpt)
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Massenet: Thaïs, Act 2: Méditation (Version for Violin and Piano)
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Strauss, Johann II : An der schönen blauen Donau Op.314 [Blue Danube Waltz] [Excerpt]
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Satie / Arr Debussy : 3 Gymnopédies : III Lent et grave
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Bach, JS: Keyboard Concerto No. 3 in D Minor, BWV 974: II. Adagio (After Marcello's Oboe Concerto, S. Z799)
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Rachmaninov: Symphony No. 2 in E Minor, Op. 27: III. Adagio (Excerpt)
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Jolivet: Concerto pour basson, orchestre à cordes, harpe et piano (Mono Version)
Symphony No. 7 in A, Op. 92: 2. Allegretto
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Violin Concerto in D major, Op. 61: 2. Larghetto
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Petrouchka / Tableau I: Fête populaire de la semaine grasse
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Petrouchka / Tableau I: Le tour de passe-passe
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Petrouchka / Tableau II: Chez Pétrouchka
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Petrouchka / Tableau III: Chez le Maure – Danse de la ballerine
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Petrouchka / Tableau III: Valse : La ballerine et le Maure
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Petrouchka / Tableau IV: Fête populaire de la semaine grasse, vers le soir
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Petrouchka / Tableau IV: Danse des nounous
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Petrouchka / Tableau IV: Un marchand fêtard avec deux tziganes
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Petrouchka / Tableau IV: Danse des cochers et des palefreniers
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Petrouchka / Tableau IV: Apparition du double de Pétrouchka
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Messiaen: Visions de l'Amen, Cantéyodjayâ, Oiseaux exotiques
Stravinski - Messiaen - Debussy - Jolivet
Symphonie 9 "Du Nouveau Monde"-Sérénades Pour Cordes
Symphony No. 9 in E Minor, Op. 95, B. 178, "Symphonie du nouveau monde": 1. Adagio - Allegro molto
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Symphony No. 9 in E Minor, Op. 95, B. 178, "Symphonie du nouveau monde": 2. Largo
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Symphony No. 9 in E Minor, Op. 95, B. 178, "Symphonie du nouveau monde": 4. Allegro con fuoco
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Sérénade pour cordes en Mi Majeur, Op. 22, B.52: 2. Tempo di valse
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Stravinski: Pétrouchka-Le sacre du printemps
Schumann: Concerto Pour Piano-Symphonie 1 "Le Printemps"
Piano Concerto No. 21 in C Major, K. 467: II. Andante
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Bruch: Violin Concerto No. 1, Op. 26 - Mendelssohn: Violin Concerto, Op. 64
Mozart: Violin Concerto No. 5 - Mendelssohn: Violin Concerto, Op. 64 (Mono Version)
Wagner: Grandes pages opératiques (Mono Version)
Tchaikovsky: Symphony No. 5 (Mono Version)
Tchaikovsky: Symphonie No. 4 (Stereo Version)
Beethoven: Concerto pour violon, Op. 61 (Mono Version)
Tchaikovsky: Symphonie No. 6, Op. 74 "Pathétique" (Mono Version)
Mozart: Concertos pour piano Nos. 18 & 24 (Mono Version)
Tchaikovsky: Symphonie No. 4, Op. 36 (Mono Version)
Haydn: Symphonies Nos. 73 "La chasse" & 88 (Mono Version)
Stravinsky: Le sacre du printemps (Mono Version)
Les concerts du Domaine musical : Troisième concert de la saison 1956, au Théâtre Marigny (Collection trésors, live, mono version)
Stravinsky: Suite from The Firebird & Symphony in Three Movements (Mono Version)
Prokofiev: Concerto pour violoncelle, Op. 58 (Mono Version)
Schoenberg: Suite, Op. 29 / Henze: Concerto per il Marigny / Webern: Variations, Op. 27
'Sonata facile' and other works - Mozart
Piano Sonata No. 16 in C Major, K. 545 "Sonata facile": I. Allegro
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Piano Sonata No. 16 in C Major, K. 545 "Sonata facile": II. Andante
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Piano Sonata No. 16 in C Major, K. 545 "Sonata facile": III. Rondo. Allegretto
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The London Sketchbook, K. 15a-ss (Orch. Smith): [Contredanse] in G Major, K. 15e
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Violin Sonata in E-Flat Major, K. 481: III. Allegretto con variazioni: Var. 2
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Piano Concerto No. 21 in C Major, K. 467: 2b. Andante - Pt. 2
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12 Contredanses for Count Czernin, K.269b - orch. Erik Smith: No. 3 in C
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Divertimento No. 15 in B Flat Major, K.287: Variation V
Academy of St. Martin in the Fields Chamber Ensemble
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Symphony No. 31 in D Major, K. 297 "Paris": 2a. Andante - Pt. 1
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Piano Sonata No. 11 in A Major, K. 331: 3. Alla Turca (Allegretto)
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Minuet in F Major from K.6 (Nannerl Notebook No. 48)
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Violin Sonata in E-Flat Major, K. 481: III. Allegretto con variazioni: Var. 1
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Overture and Three Contredanses, K.106: Contredanse No. 1 in D Major
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Violin Concerto No. 3 in G Major, K. 216: 2a. Adagio - Pt. 1
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Symphony No. 33 in B-Flat Major, K. 319: 2c. Andante moderato - Pt. 3
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Idomeneo, re di Creta, K.366 / Act 1: Allegro - Live
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Minuet in F Major, K.32, (Nannerl Notebook No. 19)
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The London Sketchbook, K. 15a-ss (Orch. Smith): [Contredanse] in F Major, K. 15h
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Piano Sonata No.14 in C Minor, K. 457: 2g. Adagio - Pt. 7
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The Seasons, Op. 37a, TH 135: 10. October: Autumn Song
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Stravinsky: Le Sacre Du Printemps 100th Anniversary Collectors Edition
Carl Seemann: Complete Deutsche Grammophon Recordings