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 0xebe9689f00a2d74af20d494dc7263cba50fee8e49ca84b4ff668983ca1e44c13. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e77d1dd1-37c0-4330-83b0-0105cfe0d357.json and https://artists.proofprofile.net/proofs/artist/e77d1dd1-37c0-4330-83b0-0105cfe0d357.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cello Sonata in G Minor, Op. 65: 1. Allegro moderato
Cello Sonata in G Minor, Op. 65: 2. Scherzo
Cello Sonata in G Minor, Op. 65: 3. Largo
Cello Sonata in G Minor, Op. 65: 4. Finale. Allegro
Cello Sonata in B-Flat Major, Op. 46: 1. Allegro moderato
Cello Sonata in B-Flat Major, Op. 46: 2. Andante sostenuto
Cello Sonata in B-Flat Major, Op. 46: 3. Finale. Allegro
Sonata for Cello and Piano No. 1 in C Minor, Op. 32: 1. Allegro
Sonata for Cello and Piano No. 1 in C Minor, Op. 32: 2. Andante tranquillo sostenuto
Sonata for Cello and Piano No. 1 in C Minor, Op. 32: 3. Allegro moderato
Third Sonata in G-Sharp Minor: I. Allegro moderato
Third Sonata in G-Sharp Minor: II. Lento moderato
Third Sonata in G-Sharp Minor: III. Allegro
Hymn-tune Prelude on Song 13 by Orlando Gibbons
Sonata for Piano: I. Lento ma non troppo - Andante ben moderato - Allegro energico
Sonata for Piano: II. Andante ben moderato
Sonata for Piano: III. Lento - Allegro ma non troppo
Douze études caracteristiques, Op. 2: No. 4, Repos d'amour
Studio per il pianoforte, Op. 30: No. 41, Aria
Second livre de pièces de clavecin: Les barricades mistérieuses
6 Piano Sonatas, Op. 25, No. 5 in F-Sharp Major: I. Piuttosto allegro con espressione
Piano Sonata No. 13 in B-Flat Major, K. 333: I. Allegro
Piano Sonata No. 12 in A-Flat Major, Op. 26: I. Andante con variazioni
Drei Fantasiestücke, Op. 111: No. 2, Fantasiestück
Suite française, Op. 65: IV. Sous les étoiles
Mikrokosmos, Sz. 107: No. 153, Dance in Bulgarian Rhythm
Guia prático, Volume IX, W359: No. 67, Laranjeira Pequenina
Guia prático, Volume IX, W359: No. 129, A Velha Que Tinha Nove Filhas
Studio per il pianoforte, Op. 30: No. 37 in B-Flat Major, Etude
Gradus ad Parnassum, Op. 44: No. 24 in F-Sharp Minor, Etude
Sonata in F Minor, Op. 2 No 1: I. Allegro
Sonata in B Minor, Op. 25 No 5: II. Lento e patetico
Twenty-four Preludes, Op. 28, CT 178: No. 13, Prelude
Troisième recueil de chants, Op. 65: No. 3, Canon
Mikrokosmos, BB 105: No. 140, Free Variations
20 études, Op. 42: No. 16 in A Major, Etude
Humoreske-bagateller, Op. 11: No. 2, Snurretoppen
Pièces de clavecin avec une méthode, Suite in E Minor, RCT 2: No. 3, Gigue en rondeau
Piano Sonata No. 4 in B-Flat Major, K. 282: II. Menuets
11 Bagatelles, Op. 119: No. 11 in B-Flat Major, Andante ma non troppo
6 Harpsichord Sonatas, Wq. 48, No. 6 in A Major: II. Adagio
3 Sonatinas in A Minor, Op. 98, No 2: I. Moderato
Albumblätter, Op. 124: No. 5, Phantasietanz
Humoreske-bagateller, Op. 11: No. 6, Spillevärket
Consolations, S. 171a: No. 1 in E Major, Andante con moto
Guia prático, Album 2, W278: No. 4, Samba-le-le
20 études, Op. 42: No. 3 in C Major, Etude
6 Kleine Präludien, No. 2 in C Minor, BWV 934
L'album de Lisette et Poulot: No. 5, Grand bal chez le petit roi
Leichte Fugen und kleine Stücke für Klavier, TWV 30:21: No. 1, Leichte Fuge
6 Easy Sonatinas, Op. 163, No 2: II. Rondo
Album für die Jugend, Op. 68: No. 11, Sizilianisch
Quarante-huit motifs, Op. 63: No. 1, La vision
Allerlei für kleine Finger, Op. 63: Spanische Eseltreiber
Marchans qui traversez tous le rivage More
55 kétszólamu énekgyakorlat: No. 3, Canon
55 kétszólamu énekgyakorlat: No. 20, Canon
Klavierfantasie, TWV 33:16: II. Gayement, Extract
Lieder und Arien aus Notenbuch der Anna Magdalena Bach: No. 76, Schaffs mit mir, Gott, nach deinem Willen, BWV 514, Extract
A Treasure of Melodies, B. 71: No. 3, Toccata
Tridtsat Detskikh P'es, Op. 27: No. 10, Clowning
Adagio and Allegro in A-Flat Major, Op. 70: I. Adagio
Adagio and Allegro in A-Flat Major, Op. 70: II. Allegro
Sonata for Alto Horn and Piano: I. Ruhig bewegt
Sonata for Alto Horn and Piano: II. Lebhaft
Sonata for Alto Horn and Piano: III. Sehr Langsam
Sonata for Alto Horn and Piano: IV. Lebhaft
Gigue from Suite No.3 in C Major for Cello, BWV 1009 (Arranger Wendell Hoss)
School Of Velocity, Op. 299: No. 10, Etude
Piano Sonata No. 4 in E-Flat Major, K. 282: III. Allegro
Keyboard Sonata in G Major, Hob. XVI:34: III. Finale
Keyboard Sonata in C Major, H 59: III. Allegro di molto
Vingt-cinq préludes, Op. 31: No. 8, La chanson de la folle au bord de la mer
Bunte Blätter, Op. 99: No. 1, Buntes Blatt
For Children, Sz. 42: No. 42, Grasshopper's Wedding
Valse nobles et sentimentales, M. 61: No. 4, Assez animé
Three Fantastic Dances, Op. 5: No. 1, Fantastic Dance
Violin Concerto No. 2 in D Major, K. 211: III. Rondeau
Violin Concerto No. 2 in D Major, K. 211: III. Rondeau - Piano Accompaniment
26 Violin Sonatas, B. d2: No. 25 in D Minor, I. Andante cantibile
26 Violin Sonatas, B. d2: No. 25 in D Minor, II. Allegro
Sonata in D Major: III. Arioso - Piano Accompaniment
Sonata in D Major: IV. Finale - Piano Accompaniment
Violin Partita No. 2 in D Minor, BWV 1004: I. Allemanda
Rózsabokor csárdás, Op. 30: No. 7 - Piano Accompaniment
Legende, Op. 314: No. 7 - Piano Accompaniment
Sonata in D Minor, MWV S2: III. Allegro - Piano Accompaniment
Vier Konzertstücke für Violine und Klavier: Paprika Jancsi
Vier Konzertstücke für Violine und Klavier: Paprika Jancsi - Piano Accompaniment
Vier Konzertstücke für Violine und Klavier: Nigunim
Vier Konzertstücke für Violine und Klavier: Nigunim - Piano Accompaniment
Sonatina: II. Singingly - Piano Accompaniment
Sonatina: III. Lively and Teasing - Piano Accompaniment
Partita in B-Flat Major, BWV 825: II. Allemande - Arr. by Ulf Grapenthin
Partita in B-Flat Major, BWV 825: III. Corrente - Arr. by Ulf Grapenthin
Violin Sonata in G Major, HWV 358: Allegro I
Violin Sonata in G Major, HWV 358: Allegro I - Piano Accompaniment
Violin Sonata in G Major, HWV 358: Adagio
Violin Sonata in G Major, HWV 358: Adagio - Piano Accompaniment
Violin Sonata in G Major, HWV 358: Allegro II
Violin Sonata in G Major, HWV 358: Allegro II - Piano Accompaniment
12 Violin Sonatas, Op. 5, No. 7 in A Minor: I. Largo
12 Violin Sonatas, Op. 5, No. 7 in A Minor: I. Largo - Piano Accompaniment
12 Violin Sonatas, Op. 5, No. 7 in A Minor: II. Allegro
12 Violin Sonatas, Op. 5, No. 7 in A Minor: II. Allegro - Piano Accompaniment
Kavesai-emlék, Op. 30: No. 5 - Piano Accompaniment
Polska i svensk ton - Piano Accompaniment
12 Danzas Españolas, Op. 37: No. 5, Andaluza
12 Danzas Españolas, Op. 37: No. 5, Andaluza - Piano Accompaniment
From the Canebrake, Op. 5: No. 1, — - Piano Accompaniment
20 Progressive Exercises for Violin, Op. 38: No. 21 in B Minor, —
12 Trattenimenti armonici, Op. 6, No. 7 in D Major: I. Grave adagio
12 Trattenimenti armonici in D Major, Op. 6, No. 7 in D Major: I. Grave adagio - Piano Accompaniment
12 Trattenimenti armonici in D Major, Op. 6, No. 7 in D Major: II. Allegro
12 Trattenimenti armonici in D Major, Op. 6, No. 7 in D Major: II. Allegro - Piano Accompaniment
Violin Sonata in G Minor, HWV 364: I. Larghetto
Violin Sonata in G Minor, HWV 364: I. Larghetto - Piano Accompaniment
Violin Sonata in G Minor, HWV 364: II. Allegro
Violin Sonata in G Minor, HWV 364: II. Allegro - Piano Accompaniment
Violin Sonata in G Minor, HWV 364: IV. Allegro
Violin Sonata in G Minor, HWV 364: IV. Allegro - Piano Accompaniment
Sonata in D Major, TWV 41:D1: I. Allemanda
Sonata in D Major, TWV 41:D1: I. Allemanda - Piano Accompaniment
Sonata in D Major, TWV 41:D1: II. Corrente
Sonata in D Major, TWV 41:D1: II. Corrente - Piano Accompaniment
Carmen, WD 31: Prélude - Piano Accompaniment
Arabesken: No. 12, Introduction and Polonaise
Arabesken: No. 12, Introduction and Polonaise - Piano Accompaniment
8 Danses hongroises, Op. 30: No. 3, The Hut Is On Fire
8 Danses hongroises, Op. 30: No. 3, The Hut Is On Fire - Piano Accompaniment
Preludes for Violin Alone: No. 1, Tempo di seguidilla
Preludes for Violin Alone: No. 2, Nocturne
Háry János, Op. 15: Intermezzo - Piano Accompaniment
Schindler's List: Theme - Piano Accompaniment
Piazzolla: Music for Classical Accordion and Orchestra
Tres Tangos: Tango I. Allegro tranquillo
Tres Tangos: Tango III. Allegretto molto marcato
Viola Sonata No. 1, Op. 11 No. 4: I. Fantasie. Ruhig
Viola Sonata No. 1, Op. 11 No. 4: II. Thema mit Variationen. Ruhig und einfach
Viola Sonata No. 1, Op. 11 No. 4: III. Finale. Sehr lebhaft
Sicilienne and Rigaudon in the Style of Francoeur (Arr. for Viola & Piano)
Slavonic Dances, Op. 72, B. 145: No. 2, Dumka. Allegretto grazioso (Arr. for Viola & Piano)
Zigeunerweisen, Op. 20 (Arr. for Viola & Piano)
Hassan, RT I/9: Serenade (Arr. L. Tertis for Viola & Piano)
Chaconne in G Minor (Arr. for Viola & Piano)
Clarinet Sonata No. 1 in F Minor, Op. 120 No. 1 (Version for Viola & Piano): I. Allegro appassionato
Clarinet Sonata No. 1 in F Minor, Op. 120 No. 1 (Version for Viola & Piano): II. Andante un poco adagio
Clarinet Sonata No. 1 in F Minor, Op. 120 No. 1 (Version for Viola & Piano): III. Allegretto grazioso
Clarinet Sonata No. 1 in F Minor, Op. 120 No. 1 (Version for Viola & Piano): IV. Vivace
24 Caprices, Op. 1, MS 25: No. 24 in A Minor (Arr. W. Primrose for Viola & Piano)
Études-Caprices, Op. 18: No. 4, in A Minor (Arr. for Viola & Piano)
14 Songs, Op. 34: No. 14, Vocalise (Arr. for Viola & Piano)
French Romanticism: Piano Music of the 19th Century
Noteworthy Women: Piano Music by Female Composers