1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13878f9af9fa077e9c15b9d51296344fb062720a61eae7df18dd719839cfa36. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34497eb9-d452-4bbc-96e6-5787ac53f87e.json and https://artists.proofprofile.net/proofs/artist/34497eb9-d452-4bbc-96e6-5787ac53f87e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sonata For 2 Pianos And Percussion, Sz. 110: 1. Assai lento
Sonata For 2 Pianos And Percussion, Sz. 110: 2. Lento, ma non troppo
Sonata For 2 Pianos And Percussion, Sz. 110: 3. Allegro non troppo
Kreisleriana, Op. 16: II. Sehr innig und nicht zu rasch
Kreisleriana, Op. 16: III. Sehr aufgeregt
Kreisleriana, Op. 16: VIII. Schnell und spielend
Arpeggione Sonata in A Minor, D. 821: I. Allegro moderato
Arpeggione Sonata in A Minor, D. 821: II. Adagio –
Arpeggione Sonata in A Minor, D. 821: III. Allegretto
Le Carnaval des Animaux: Introduction et Marche royale du Lion
Le Carnaval des Animaux: Hémiones (Animaux véloces)
Le Carnaval des Animaux: Le Coucou au fond des bois
2 Rhapsodies, Op. 79: No. 2 in G Minor. Molto passionato, ma non troppo allegro
Keyboard Concerto in D Major, Hob. XVIII:11: I. Vivace
Württembergisches Kammerorchester Heilbronn
Keyboard Concerto in D Major, Hob. XVIII:11: II. Un poco adagio (Cadenza: Landowska)
Keyboard Concerto in D Major, Hob. XVIII:11: III. Rondo all'ungarese. Allegro assai
Piano Concerto No. 1 in C Minor, Op. 35: I. Allegro moderato
Piano Concerto No. 1 in C Minor, Op. 35: II. Lento
Piano Concerto No. 1 in C Minor, Op. 35: III. Moderato
Piano Concerto No. 1 in C Minor, Op. 35: IV. Allegro con brio
Piano Quartet No. 1 in G Minor, Op. 25: I. Allegro
Piano Quartet No. 1 in G Minor, Op. 25: II. Intermezzo (Allegro ma non troppo)
Piano Quartet No. 1 in G Minor, Op. 25: III. Andante con moto
Piano Quartet No. 1 in G Minor, Op. 25: IV. Rondo alla Zingarese
En blanc et noir, L.134 - for 2 pianos: 1. Avec emportement
En blanc et noir, L.134 - for 2 pianos: 2. Lent. Sombre
En blanc et noir, L.134 - for 2 pianos: 3. Scherzando
Fantaisie for Piano and Orchestra, CD 72: I. Andante ma non troppo
Fantaisie for Piano and Orchestra, CD 72: II. Lento e molto espressivo
Fantaisie for Piano and Orchestra, CD 72: III. Allegro molto
Suite No. 2 For 2 Pianos, Op. 17: 1. Introduction (Alla marcia)
Suite No. 2 For 2 Pianos, Op. 17: 2. Waltz (Presto)
Suite No. 2 For 2 Pianos, Op. 17: 3. Romance (Andantino)
Suite No. 2 For 2 Pianos, Op. 17: 4. Tarantella (Presto)
Denisov: Ode - Clarinet Quintet - Clarinet Concerto (Digitally Remastered)
Ode (1968) for clarinet, piano and percussion
Clarinet Quintet (1987) for clarinet and string quartet: I. Agitato
Clarinet Quintet (1987) for clarinet and string quartet: II. Molto tranquillo
Clarinet Quintet (1987) for clarinet and string quartet: III. Agitato
Concerto For clarinet And orchestra (1989): I. Agitato
Concerto For clarinet And orchestra (1989): II. Lento
Minas Borboudakis: Photonic constructions
Orchestra Sinfonica Nazionale della RAI di Milano
Bartók: Sonata For 2 Pianos And Percussion, Sz. 110 / Ravel: Ma mère l'oye, M. 62; Rapsodie espagnole, M. 54
Ma mère l'oye, M.60: 1. Pavane de la Belle au bois dormant: Lent
Ma mère l'oye, M.60: 2. Petit Poucet: Très modéré
Ma mère l'oye, M.60: 3. Laideronnette, Impératrice des pagodes: Mouvement de Marche
Ma mère l'oye, M.60: 4. Les Entretiens de la Belle et de la Bête: Mouvement de Valse très modéré
Ma mère l'oye, M.60: 5. Le Jardin féerique: Lent et grave
Rapsodie espagnole, M.54: 1. Prélude à la nuit: Modéré
Rapsodie espagnole, M.54: 2. Malagueña: Assez vif
Rapsodie espagnole, M.54: 3. Habanera: En demi-teinte et d'un rhythme las
Rapsodie espagnole, M.54: 4. Feria: Assez vif
Chamber Symphony, Op. 110a - orch. Barshai: 1. Largo (attacca:)
Symphony For Strings And Woodwinds Op. 73A (Orch. Barshai): 1. Allegretto
Chamber Symphony, Op. 110a - orch. Barshai: 2. Allegro molto (attacca:)
Symphony For Strings And Woodwinds Op. 73A (Orch. Barshai): 2. Moderato con moto
Chamber Symphony, Op. 110a - orch. Barshai: 3. Allegretto (attacca:)
Symphony For Strings And Woodwinds Op. 73A (Orch. Barshai): 3. Allegro non troppo
Chamber Symphony, Op. 110a - orch. Barshai: 4. Largo (attacca:)
Symphony For Strings And Woodwinds Op. 73A (Orch. Barshai): 4. Adagio - attacca:
Chamber Symphony, Op. 110a - orch. Barshai: 5. Largo
Symphony For Strings And Woodwinds Op. 73A (Orch. Barshai): 5. Moderato
Symphony for Strings Op. 118A (orch. Barshai): 1. Andante
Prelude in Memoriam Dmitri Shostakovich: Andante
Symphony for Strings Op. 118A (orch. Barshai): 2. Allegretto furioso
Symphony No. 15, Op. 141 - Arr. Viktor Derevianko (with the participation of Mark Pekarsky): 1. Allegretto
Symphony for Strings Op. 118A (orch. Barshai): 3. Adagio (attacca:)
Symphony No. 15, Op. 141 - Arr. Viktor Derevianko (with the participation of Mark Pekarsky): 2. Adagio - Largo - Adagio - Largo (attacca:)
Symphony for Strings Op. 118A (orch. Barshai): 4. Allegretto - Andante
Symphony No. 15, Op. 141 - Arr. Viktor Derevianko (with the participation of Mark Pekarsky): 3. Allegretto
Chamber Symphony Op. 83A (Orch. Barshai): 1. Allegretto
Symphony No. 15, Op. 141 - Arr. Viktor Derevianko (with the participation of Mark Pekarsky): 4. Adagio - Allegretto - Adagio - Allegretto
Chamber Symphony Op. 83A (Orch. Barshai): 2. Andantino
Chamber Symphony Op. 83A (Orch. Barshai): 3. Allegretto - attacca:
Chamber Symphony Op. 83A (Orch. Barshai): 4. Allegretto
Schnittke: Praeludium In Memoriam Dmitri Shostakovich / Shostakovich: Symphony No. 15
Absalon fili mi (Arr. Carp for 4 Bassons)
Trio Sonata in G Major: I. Allegro moderato
Sonata for Bassoon and Cello in B-Flat Major, K. 292: I. Allegro
Sonata for Bassoon and Cello in B-Flat Major, K. 292: II. Andante
Sonata for Bassoon and Cello in B-Flat Major, K. 292: III. Rondo. Allegro
In My Merry Oldsmobile (Arr. Carrol for Bassoon)
Violin Sonata No. 6 in G Major, BWV 1019: II. Largo
Sonata in A Major for Violin and Continuo, Op. 2/2 , RV 31: II. Adagio
Oboe Sonata in f major, HWV 363a - Transcribed by Reginald Kell: Allegro
Sonata for Piano and Violin in F Major, K.13: 3. Menuetto primo - Menuetto secondo
24 Preludes, Op. 28: No. 6 in B Minor, Lento assai (Arr. for Cello and Piano by A. Franchomme)
Cello Sonata No. 3 in A Major, Op. 69: III. Adagio cantabile –
Nutcracker Suite, Op. 71a, TH 35: Danse Chinoise, Allegro moderato (Arr. Economou for 2 Pianos)
Petite pièce, CD 127 (Version for Oboe d'amore & Piano)
16 Waltzes, Op. 39 - For Piano Duet: 4. in E minor
Trois morceaux en forme de poire: No.1 - Lentement
Valse sentimentale, Op. 51, No. 6: Valse sentimentale, Op. 51, No. 6
Sonata for Cello and Piano No. 3 in A Major, Op. 69: III. Adagio cantabile - Allegro vivace
Violin Sonata No. 10 in G Major, Op. 96: III. Scherzo (Allegro)
44 Duos for 2 Violins, Sz. 98: No. 43, Pizzicato. Allegretto
Cello Sonata No. 1 in F Major, Op. 5 No. 1: Ic. Adagio – Presto
The Constant Music Master - Instalment 2 / 11. Duetto à Violino ò Flauto e Viola pomposa In G Maj.: 2. Scherzando
Peer Gynt Suite No. 1, Op. 46 - Arr. The Cambridge Buskers: 4. In the Hall of the Mountain King
5 Easy Pieces for Piano Duet: 1. Andante
16 Waltzes, Op. 39 - For Piano Duet: 15. in A
44 Duos for 2 Violins, Sz. 98: No. 5, Slovakian Song 1. Molto moderato
12 Movements from Romeo and Juliet, Op. 64: X. Dance Of Five Couples (Transcription For 2 Pianos By Sergei Babayan)
12 Movements from Romeo and Juliet, Op. 64: VI. Juliet As A Young Girl - The Nurse Delivers Juliet's Letter To Romeo (Transcription For 2 Pianos By Sergei Babayan)
Sonata For Viola Da Gamba And Harpsichord No. 2 In D, BWV 1028: 1. Adagio
Twenty-Four Preludes, Op. 34: No. 21 in F flat major - Allegretto poco moderato
The Constant Music Master - Instalment 2 / 11. Duetto à Violino ò Flauto e Viola pomposa In G Maj.: 1. Dolce
5 Easy Pieces for Piano Duet: 4. Napolitana
Duo for Violin and Cello in E-Flat Major, Unv 8 (Fragment)
12 Movements from Romeo and Juliet, Op. 64: IV. Quarrel (Transcription For 2 Pianos By Sergei Babayan)
Orgelbüchlein, BWV 599-644: Herr Gott, nun schleuss den Himmel auf, BWV 617 (Arr. Demenga for Cello & Piano)
Trois morceaux en forme de poire: Prolongation du même. Au pas
Lieder ohne Worte VII, Op. 85: II. Allegro agitato (Arr. Ottensamer for Clarinet & Piano)
16 Waltzes, Op. 39: No. 15 in A-Flat Major
36 Originaltänze (German Dances) for Piano, Op. 9: German Dance No. 12 (D 365, No. 11)
Trois morceaux en forme de poire: Redite
36 Originaltänze (German Dances) for Piano, Op. 9: German Dance No. 14 (D 365, No. 9)
Ma mère l'oye, M.60 - For Piano Duet, M.60: 1. Pavane de la Belle au bois dormant
4 Ballads and Romances, Op. 75: No. 4, Walpurgisnacht
Twenty-Four Preludes, Op. 34: No. 10 In C Sharp Minor
Flute Sonata in E-Flat Major, BWV 1031: II. Siciliano
Lieder ohne Worte VII, Op. 85: VI. Allegretto con moto. MWV U155 (Arr. Ottensamer for Clarinet & Piano)
16 Waltzes, Op. 39 - For Piano Duet: 8. in B flat
Sonata For Piano And Violin In G, K. 27: 1. Andante poco agadio
Sonata for Horn and Piano in F, Op. 17: 2. Poco adagio, quasi andante
Partita "Polonaise" in A major for two guitars: Le Pris
Partita "Polonaise" in A major for two guitars: Combattans
Partita "Polonaise" in A major for two guitars: Rigidon
In Memoriam: Kammermusik von Harald Genzmer
Cello Sonata No. 2: I. Adagissimo - Allegro
Cello Sonata No. 2: II. Prestissimo e sempre leggiero
Konzert for Piano and Percussion: I. Molto lento
Konzert for Piano and Percussion: II. Adagio
Konzert for Piano and Percussion: III. Intermezzo. Prestissimo
Konzert for Piano and Percussion: IV. Finale. Lento e rubato - Vivace
Concerto for marimba and vibraphone: 1. Animé
Concerto for marimba and vibraphone: 2. Lent
Concerto for marimba and vibraphone: 3: Vif
Quattro Pezzi for Percussion solo Op. 92: 4. Vivace
Concertino for Marimba and Orchestra: 1. Vigorous
Rundfunkorchester des hessischen Rundfunks
Concertino for Marimba and Orchestra: 2. Calm
Concertino for Marimba and Orchestra: 3. Lifely
Concertino für Vibraphon und Streichorchester: 1. Allegro moderato
Concertino für Vibraphon und Streichorchester: 2. Lento
Concertino für Vibraphon und Streichorchester: 3. Rondo. Allegro
Quattro pezzi for Percussion Solo, Op. 92: Prolog
Quattro pezzi for Percussion Solo, Op. 92: Allegro con brio
Quattro pezzi for Percussion Solo, Op. 92: A la sarabande
Quattro pezzi for Percussion Solo, Op. 92: Vivace
Le tombeau de Couperin, M. 68: I. Prélude
Sonatine, M. 40: II. Mouvement de menuet
Le tombeau de Couperin, M. 68: II. Fugue
Le tombeau de Couperin, M. 68: III. Forlane
Le tombeau de Couperin, M. 68: IV. Rigaudon
Le tombeau de Couperin, M. 68: V. Menuet
Le tombeau de Couperin, M. 68: VI. Toccata
Valses nobles et sentimentales, M. 61: I. Modéré, très franc
Valses nobles et sentimentales, M. 61: II. Assez lent, avec une expression intense
Valses nobles et sentimentales, M. 61: III. Modéré
Valses nobles et sentimentales, M. 61: IV. Assez animé
Valses nobles et sentimentales, M. 61: V. Presque lent, dans un sentiment intime
Valses nobles et sentimentales, M. 61: VI. Vif
Valses nobles et sentimentales, M. 61: VII. Moins vif
Valses nobles et sentimentales, M. 61: VIII. Epilogue. Lent
Miroirs, M. 43: No. 3, Une barque sur l'océan
Miroirs, M. 43: No. 4, Alborada del gracioso
Miroirs, M. 43: No. 5, La vallée des cloches
La valse, M. 72 (Version for Piano Duet)
Symphonic Dances, Op. 45: 1. Non allegro
Symphonic Dances, Op. 45: 2. Andante con moto (Tempo di valse)
Piano Trio No. 2 in E Minor, Op. 67: I. Andante - Live
Symphonic Dances, Op. 45: 3. Lento assai - Allegro vivace
Piano Trio No. 2 in E Minor, Op. 67: II. Allegro non troppo - Live
The Nutcracker Suite, Op. 71a (Arr. Economou for 2 Pianos): I. Miniature Overture
Piano Trio No. 2 in E Minor, Op. 67: III. Largo - Live
The Nutcracker Suite, Op. 71a (Arr. Economou for 2 Pianos): IIa. March
Piano Trio No. 2 in E Minor, Op. 67: IV. Allegretto - Live
Fantasiestücke, Op. 88: I. Romanze (Nicht schnell, mit innigem Ausdruck)
The Nutcracker Suite, Op. 71a (Arr. Economou for 2 Pianos): IIb. Dance of the Sugar Plum Fairy
Piano Trio in A Minor, Op. 50: I. Pezzo elegiaco. Moderato assai – Allegro giusto - Live
Fantasiestücke, Op. 88: II. Humoreske (Lebhaft)
The Nutcracker Suite, Op. 71a (Arr. Economou for 2 Pianos): IIc. Russian Dance (Trepak)
Piano Trio in A Minor, Op. 50: IIa. Tema con Variazioni: a. Theme. Andante con moto - Live
The Nutcracker Suite, Op. 71a (Arr. Economou for 2 Pianos): IId. Arabian Dance (Coffee)
Piano Trio in A Minor, Op. 50: IIa. Tema con Variazioni: b. Var. 1. L'istesso tempo - Live
The Nutcracker Suite, Op. 71a (Arr. Economou for 2 Pianos): IIe. Chinese Dance (Tea)
Piano Trio in A Minor, Op. 50: IIa. Tema con Variazioni: c. Var. 2. Più mosso - Live
The Nutcracker Suite, Op. 71a (Arr. Economou for 2 Pianos): IIf. Dance of the Reed-Pipes
Piano Trio in A Minor, Op. 50: IIa. Tema con Variazioni: d. Var. 3. Allegro moderato - Live
The Nutcracker Suite, Op. 71a (Arr. Economou for 2 Pianos): III. Waltz of the Flowers
Piano Trio in A Minor, Op. 50: IIa. Tema con Variazioni: e. Var. 4. L'istesso tempo - Live
Piano Trio in A Minor, Op. 50: IIa. Tema con Variazioni: f. Var. 5. L'istesso tempo - Live
Piano Trio in A Minor, Op. 50: IIa. Tema con Variazioni: g. Var. 6. Tempo di valse - Live
Piano Trio in A Minor, Op. 50: IIa. Tema con Variazioni: h. Var. 7. Allegro moderato - Live
Piano Trio in A Minor, Op. 50: IIa. Tema con Variazioni: i. Var. 8. Fuga. Allegro moderato - Live
Piano Trio in A Minor, Op. 50: IIa. Tema con Variazioni: j. Var. 9. Andante flebile, ma non tanto - Live
Piano Trio in A Minor, Op. 50: IIa. Tema con Variazioni: k. Var. 10. Tempo di mazurka - Live
Piano Trio in A Minor, Op. 50: IIa. Tema con Variazioni: l. Var. 11. Moderato - Live
Piano Trio in A Minor, Op. 50: IIb. Variazione finale e coda: a. Allegro risoluto e con fuoco - Live
Piano Trio in A Minor, Op. 50: IIb. Variazione finale e coda: b. Coda. Lugubre. Andante con moto - Live
Martha Argerich - Solo Works & Works for Piano Duo
Kinderszenen, Op. 15: I. Von fremden Ländern und Menschen
Piano Sonata in B Minor, S. 178: I. Lento assai – Allegro energico
Kinderszenen, Op. 15: II. Kuriose Geschichte
Piano Sonata in B Minor, S. 178: IIa. Grandioso
Piano Sonata in B Minor, S. 178: IIb. Cantando espressivo –
Kinderszenen, Op. 15: IV. Bittendes Kind
Piano Sonata in B Minor, S. 178: IIc. Pesante – Recit.
Piano Sonata in B Minor, S. 178: IIIa. Andante sostenuto –
Kinderszenen, Op. 15: VI. Wichtige Begebenheit
Piano Sonata in B Minor, S. 178: IIIb. Quasi adagio
Piano Sonata in B Minor, S. 178: IVa. Allegro energico
Piano Sonata in B Minor, S. 178: IVb. Più mosso
Kinderszenen, Op. 15: IX. Ritter vom Steckenpferd
Piano Sonata in B Minor, S. 178: IVc. Cantando espressivo senza slentare
Piano Sonata in B Minor, S. 178: IVd. Stretta quasi Presto – IVe. Presto – Prestissimo
Kinderszenen, Op. 15: XI. Fürchtenmachen
Piano Sonata in B Minor, S. 178: V. Andante sostenuto – Allegro moderato – Lento assai
Kinderszenen, Op. 15: XII. Kind im Einschlummern
Hungarian Rhapsody No. 6 in D-Flat Major, S. 244/6
Kinderszenen, Op. 15: XIII. Der Dichter spricht
2 Rhapsodies, Op. 79: No. 1 in B Minor. Agitato
Piano Sonata No. 2 in G Minor, Op. 22: I. So rasch wie möglich
Piano Sonata No. 2 in G Minor, Op. 22: II. Andantino. Getragen
Piano Sonata No. 2 in G Minor, Op. 22: III. Scherzo. Sehr rasch und markiert
Piano Sonata No. 2 in G Minor, Op. 22: IV. Rondo. Presto
Philharmonisches Kammerorchester München
Overture on Hebrew Themes, Op. 34 bis - Arr. for Clarinet, Piano & String Orchestra by Michael Helmrath
Blessed Are Your Sons - Arr. for Clarinet & String Orchestra by Roberto Pansera
Misa Criolla - Arr. for Bass Clarinet, Clarinet, Percussion, Harp, Harpsichord & String Orchestra by Roberto Pansera & Michael Helmrath
Cello Suite No. 1 in G Major, BWV 1007: I. Prelude (Transcr. for Percussion)
Cello Suite No. 1 in G Major, BWV 1007: II. Allemande (Transcr. for Percussion)
Cello Suite No. 1 in G Major, BWV 1007: III. Courante (Transcr. for Percussion)
Cello Suite No. 1 in G Major, BWV 1007: IV. Sarabande (Transcr. for Percussion)
Cello Suite No. 1 in G Major, BWV 1007: V. Menuet I, II, III (Transcr. for Percussion)
Cello Suite No. 1 in G Major, BWV 1007: VI. Gigue (Transcr. for Percussion)
Mambo für alle - und lauter komische Instrumente
Tuba Tune in D Major, Op. 15: Allegro con brio
The Earl Of Oxfords March (Arr. for Brass)
Ode for the Birthday of Queen Anne, HWV74: 1. Eternal Source Of Light Divine
Suite Gothique, Op.25: I. Introduction-Choral
Suite Gothique, Op.25: II. Menuet gothique
Suite Gothique, Op.25: III. Priére á Notre Dame
Organ Sonata No.1 in D Minor, Op.42: III. Final - Allegro assai
Bernstein, Gershwin & Bartók : Works for 2 Pianos (Apex)
Bernstein / Arr. McKibbins, Philipps & Sadlo for Piano and Percussion: Symphonic Dances from West Side Story
Gershwin: 3 Preludes: No. 1 in B-Flat Major
Gershwin: 3 Preludes: No. 2 in C-Sharp Minor
Gershwin: 3 Preludes: No. 3 in E-Flat Minor
Bartók: Sonata for Two Pianos and Percussion, Sz. 110: I. Assai lento - Allegro molto
Bartók: Sonata for Two Pianos and Percussion, Sz. 110: II. Lento ma non troppo
Bartók: Sonata for Two Pianos and Percussion, Sz. 110: III. Allegro non troppo
Concerto for Recorder, Strings and Basso Continuo in D Major: Adagio. Presto
Hot Sonate for Alto Saxophone and Piano: I. M.M. Viertel = 66
Symphonie pour le clavecin avec orchestre in G Major
Orchestre Symphonique de la R.T.B.F. Bruxelles
Grande Concerto in Quattro Tempi for Two Double-Basses and Orchestra: Andante