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 entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2780b27746bc73d4cf75c789129755462707c6f54c89e5bfb7ef730aa7beba6a. Chain 2 (Bitcoin): anchored in block 954115 (2026-06-17T15:44:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/79366dc1-9399-4a3f-87bd-189a52ffc214.json and https://artists.proofprofile.net/proofs/artist/79366dc1-9399-4a3f-87bd-189a52ffc214.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Chassidic Dance for Viola and Cello: I. Allegro Moderato
Chassidic Dance for Viola and Cello: II. Allegretto
Bucolic for Viola and Cello: I. Allegro Vivace
Bucolic for Viola and Cello: II. Allegro Sostenuto, Poco Rubato
Bucolic for Viola and Cello: III. Allegro Molto
Bucolic for Viola and Cello: V. Allegro Marciale
Bucolic for Viola and Cello: VI. Andantino
Duo for Viola and Cello: I. Moderato - Allegretto - Agitato - Molto Tranquillo
Duo for Viola and Cello: IV. Moderato - Allegro Deciso - Moderato - Presto Fanatico
44 Duos for 2 Violins, Sz. 98: Nr. 13 (Arr. for Viola and Cello)
44 Duos for 2 Violins, Sz. 98: Nr. 23 (Arr. for Viola and Cello)
44 Duos for 2 Violins, Sz. 98: Nr. 28 (Arr. for Viola and Cello)
44 Duos for 2 Violins, Sz.98: Nr. 35 (Arr. for Viola and Cello)
44 Duos for 2 Violins, Sz. 98: Nr. 42 (Arr. for Viola and Cello)
Little Study for Viola and Cello: I. Andante Calmo
Little Study for Viola and Cello: II. Scherzando
Tuscania, Vol. 2 (Mozart Transcriptions from Zauberflöte & Cambini Duos for Two Violas)
Duo for Violas (1784) Nr.1 in D Major: I. Allegro
Duo for Violas (1784) Nr.1 in D Major: II. Rondo. Allegro
Die Zauberflöte, K620, Act 1: Dies Bildnis Ist Bezaubernd Schön - Transcr. for duo 1792
Duo for Violas (1784) Nr.2 in F Major: I. Allegro
Duo for Violas (1784) Nr.2 in F Major: II. Minuetto. Grazioso
Die Zauberflöte K 620, Act 2: Ach, Ich Fühl's, Es Ist Verschwunden - Transcr. for duo 1792
Duo for Violas (1784) Nr.3 in a Major: I. Allegro
Duo for Violas (1784) Nr.3 in a Major: II. Rondo. Allegro
Die Zauberflöte K620, Act 2: Alles Fühlt Der Liebe Freuden - Transcr. for duo 1792
Duo for Violas (1784) Nr.4 in B Flat Major: I. Allegro
Duo for Violas (1784) Nr.4 in B Flat Major: II. Minuetto. Arioso
Die Zauberflöte K 620, Act 1: Zum Ziele Führt Dich Diese Bahn - Transcr. for duo 1792
Duo for Violas (1784) Nr.5 in C Major: I. Allegro
Duo for Violas (1784) Nr.5 in C Major: II. Rondo. Allegro
Die Zauberflöte K 620, Act 1: Bei Männern, Welche Liebe Fühlen - Transcr. for duo 1792
Duo for Violas (1784) Nr.6 in E Flat Major: I. Allegro
Duo for Violas (1784) Nr.6 in E Flat Major: II. Minuetto. Grazioso
Die Zauberflöte K 620, Act 2: Marsch Der Priester - Transcr. for duo 1792
Streichsextett mit Kontrabass, 1. Allegro non troppo, Allegro con fuoco
Streichsextett mit Kontrabass, 2. Scherzo
Streichsextett mit Kontrabass, 3. Adagio molto sostenuto
Streichsextett mit Kontrabass, 4. Scherzo
Streichsextett mit Kontrabass, 5. Finale
Tristis Est Anima Mea (Instrumental Version from the Responsoria Pro Hebdomada Sancta)
Responsoria pro Hebdomada Sancta: Tristis Est Anima Mea (Arr. for Strings)
Mozart in Florence (The Expectations of the Mozarts at the Court of the Grand Duke of Tuscany)
Duo in G Major K 423 for violin e viola, 1. Allegro
Duo in G Major K 423 for violin e viola, 2. Adagio
Duo in G Major K 423 for violin e viola, 3. Rondo Allegro
Duo in B Flat Major K 424 for violin e viola, 1. Adagio, Allegro
Duo in B Flat Major K 424 for violin e viola, 2. Andante Cantabile
Duo in B Flat Major K 424 for violin e viola, 3. Tema con variazioni
Sonata I in E flat major for two violas, 1. Andante
Sonata I in E flat major for two violas, 2. Minuetto
Sonata II in a Major for two violas, 1. Andante
Sonata II in a Major for two violas, 2. Minuetto
Sonata III in F Major for two violas, 1. Allegro
Sonata III in F Major for two violas, 2. Minuetto
Sonata IV in E flat Major for two violas, 1. Andante
Sonata IV in E flat Major for two violas, 2. Minuetto
Sonata V in B flat Major for two violas, 1. Andante
Sonata V in B flat Major for two violas, 2. Minuetto
Sonata VI in E flat Major for two violas, 1. Andante
Sonata VI in E flat Major for two violas, 2. Allegro
Sonata VI in E flat Major for two violas, 3. Grazioso
Glassworks: I. Opening (Arr. for Gothic Bells, Strings & Theorbo)
Canzonetta spirituale sopra alla nanna (Arr. for Violin & Harpsichord)
Kantate, BWV 169: Aria " Stirb in mir Welt und alle deine Liebe"
Sonnerie de Sainte-Geneviève du Mont de Paris (Arr. for Recorder, Viola da Gamba & Basso Continuo)
Musikalisches Opfer BWV 1079, Ricercare a sei
Kurd Shepherd Melody (Arr. for recorder, two violas and cello)
Oxford Bodleian Manuscript, in Nomine 3 à 6
Fairy Queen Z.629, Chaconne "Dance for the Chinese man and woman"
Rumbling Divertimenti (Chamber music with oboe and double bass on historical & period instruments)
Michael Haydn: Quartet C Major MH 600 for English Horn, Violin, Cello Piccolo, Violone: 1. Allegro Con Spirito - Michael Haydn: Quartet C Major MH 600 for English Horn, Violin, Cello Piccolo, Violone: 1. Allegro Con Spirito
Michael Haydn: Quartet C Major MH 600 for English Horn, Violin, Cello Piccolo, Violone: 2. Adagio
Michael Haydn: Quartet C Major MH 600 for English Horn, Violin, Cello Piccolo, Violone: 3. Rondo. Presto
Michael Haydn: Divertimento C Major MH 179 for Oboe, Viola and Violone: 1. Allegro Molto
Michael Haydn: Divertimento C Major MH 179 for Oboe, Viola and Violone: 2. Menuet
Michael Haydn: Divertimento C Major MH 179 for Oboe, Viola and Violone: 3. Aria. Adagio
Michael Haydn: Divertimento C Major MH 179 for Oboe, Viola and Violone: 4. Menuet
Michael Haydn: Divertimento C Major MH 179 for Oboe, Viola and Violone: 5. Tema E Variazioni. Andante
Michael Haydn: Divertimento C Major MH 179 for Oboe, Viola and Violone: 6. Presto
Florian Leopold Gassmann: Quartet H 486 D Major for Oboe, Two Violas and Bass: 1. Adagio
Florian Leopold Gassmann: Quartet H 486 D Major for Oboe, Two Violas and Bass: 2. Allegro
Florian Leopold Gassmann: Quartet H 486 D Major for Oboe, Two Violas and Bass: 3. Allegro
Florian Leopold Gassmann: Trio H 378 Eb Major for Two Violas and Bass: 1. Allegretto
Florian Leopold Gassmann: Trio H 378 Eb Major for Two Violas and Bass: 2. Andante
Florian Leopold Gassmann: Trio H 378 Eb Major for Two Violas and Bass: 3. Menuetto Grazioso
Florian Leopold Gassmann: Trio H 378 Eb Major for Two Violas and Bass: 4. Allegro
Florian Leopold Gassmann: Trio H 377 Bb Major for Two Violas and Bass: 1. Allegretto
Florian Leopold Gassmann: Trio H 377 Bb Major for Two Violas and Bass: 2. Andante
Florian Leopold Gassmann: Trio H 377 Bb Major for Two Violas and Bass: 3. Menuetto Grazioso
Florian Leopold Gassmann: Trio H 377 Bb Major for Two Violas and Bass: 4. Allegro
Luigi Boccherini: Notturno G.472 Op.38 No.6 Bb Major for Two Violins, Viola, Cello, Oboe, Bassoon: 1. Amoroso
Luigi Boccherini: Notturno G.472 Op.38 No.6 Bb Major for Two Violins, Viola, Cello, Oboe, Bassoon: 2. Minuetto Con Moto
Musica e Regime 5 (The 5th Volume of the Serie about "Entartete Musik" for String Trio)
Serenade for String Trio (1938) 1. Andante-Allegro
Serenade for String Trio (1938) 2. Adagio
Serenade for String Trio (1938) 3. Allegro
Serenade for String Trio (1934) 1. Allegro Giocoso
Serenade for String Trio (1934), 2. Scherzando
Serenade for String Trio (1934), 3. Adagio Ma Non Troppo
Serenade for String Trio Op.33 (1908), 1. Allegro Moderato
Serenade for String Trio Op.33 (1908), 2. Intermezzo-Allegretto Vivace
Serenade for String Trio Op.33 (1908), 3. Egloga
Serenade for String Trio Op.33 (1908), 4. Capriccio Allegro Vivace, Ma Non Troppo
String Trio Op.48 (1945), 1. Allegro Con Moto
String Trio Op.48 (1945), 3. Moderato Assai
Beethoven & Fellows (Chamber Music Beethoven, Hummel and Archduke of Austria on Original Instruments)
Notturno Op.42: 1. Marcia Allegro - 1796 transcr. from Serenade op.8
Notturno Op.42: 2. Adagio - 1796 transcr. from Serenade op.8
Notturno Op.42: 3. Minuetto - 1796 transcr. from Serenade op.8
Notturno Op.42: 4. Adagio Allegro scherzando - 1796 transcr. from Serenade op.8
Notturno Op.42: 5. Alla polacca - 1796 transcr. from Serenade op.8
Notturno Op.42: 6. Thema e variazioni Marcia Allegro - 1796 transcr. from Serenade op.8
Viola Sonata Nr. 3 in E Flat Major, Op.5: 1. Allegro Moderato
Viola Sonata Nr. 3 in E Flat Major, Op.5: 2. Adagio Cantabile
Viola Sonata Nr. 3 in E Flat Major, Op.5: 3. Rondo Allegro
Trio for Clarinet Cello and Piano (1814): 1.Allegro Moderato
Trio for Clarinet Cello and Piano (1814): 2.Scherzo Allegretto
Trio for Clarinet Cello and Piano (1814): 3.Larghetto Thema Con Variazioni
A Gold Box (Boccherini and Dittersdorf Chamber Music with Double Bass)
String Quintet Op.39 No.1, G.337 in B Flat Major, 1. Andante Lento
String Quintet Op.39 No.1, G.337 in B Flat Major, 2. Allegro Vivo-Tempo Di Minuetto-Tempo I
String Quintet Op.39 No.1, G.337 in B Flat Major, 3. Rondeau: Allegro Ma Non Tanto-Tempo Di Minuetto-Tempo I
String Quintet Op.39 No.2, G.338 in F Major, 1. Allegro Vivo Non Presto
String Quintet Op.39 No.2, G.338 in F Major, 2. Adagio Non Tanto
String Quintet Op.39 No.2, G.338 in F Major, 3. Minuetto E Trio
String Quintet Op.39 No.2, G.338 in F Major, 4. Finale, Allegro Vivo
String Quintet Op.39 No.3, G.339 in D Major, 1. Allegro Vivo
String Quintet Op.39 No.3, G.339 in D Major, 2. Pastorale, Amoroso Ma Non Lento
String Quintet Op.39 No.3, G.339 in D Major, 3. Finale, Presto
Duetto for Viola and Violone in E-Flat Major, Kr.219, 1.Allegro Moderato
Duetto for Viola and Violone in E-Flat Major, Kr.219, 2. Menuetto I Allegretto-Trio
Duetto for Viola and Violone in E-Flat Major, Kr.219, 3. Adagio
Duetto for Viola and Violone in E-Flat Major, Kr.219, 4. Menuetto II Allegretto
Duetto for Viola and Violone in E-Flat Major, Kr.219, 5. Tema Con Variazioni, Allegretto
La Pazzia venuta da Napoli - Ossia La Pazza a voce sola
Stellidaura Vendicante, Atto 1, Aria "Deh rendetemi ombre care"
La Conversione di San Guglielmo, Introduzione I. Allegro
Li prodigi della Divina Grazia nella conversione e morte di San Guglielmo, Duca D'Aquitania (Dramma sacro di Giovanni Battista Pergolesi)
La Conversione di San Guglielmo, Introduzione II. Andante
La Conversione di San Guglielmo, Introduzione III. Andante
La Conversione di San Guglielmo, Atto I. Recitativo "Su la sede di Pietro", Guglielmo, Cuosemo, Demonio, Angelo, San Ber
La Conversione di San Guglielmo, Atto I. Aria "ch'io muti consiglio", Guglielmo
La Conversione di San Guglielmo, Atto I. Recitativo "Già la vittoria in campo", Demonio, Angelo, San Bernardo
La Conversione di San Guglielmo, Atto I. Aria "Dio s'offende", San Bernardo
La Conversione di San Guglielmo, Atto I. Recitativo "Eseguir noi dovremmo", Demonio, Cuosemo, Angelo
La Conversione di San Guglielmo, Atto I. Aria "Abbassa l'orgoglio", Angelo
La Conversione di San Guglielmo, Atto I. Recitativo "Bene mio", Cuosemo, Demonio
La Conversione di San Guglielmo, Atto I. Aria "Si vedisse", Cuosemo
La Conversione di San Guglielmo, Atto I. Recitativo "No, non m'atterrisco al lampo", Demonio
La Conversione di San Guglielmo, Atto I. Aria " A fondar le mie grandezze", Demonio
La Conversione di San Guglielmo, Atto I. Recitativo "Poi che l'uscio dei templi", Guglielmo, Angelo
La Conversione di San Guglielmo, Atto I. Aria "Dove mai raminga vai", Angelo
La Conversione di San Guglielmo, Atto I. Recitativo "Ma non sai che risponde" Guglielmo, Angelo
La Conversione di San Guglielmo, Atto I. Recitativo accompagnato "Così dunque si teme", San Bernardo
La Conversione di San Guglielmo, Atto I. Aria "Come non pensi", San Bernardo
La Conversione di San Guglielmo, Atto I. Recitativo "Dove, dove misero sono", Guglielmo, Angelo, San Bernardo, Demonio
La Conversione di San Guglielmo, Atto I. Quartetto "Cieco non vid'io" Guglielmo, Angelo, Demonio, San Bernardo