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 0x21977ebd908f2f1065ea8aaa778203ece8e9ad484114af481631502c295f0e20. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab6f9075-c7ee-42e6-806f-4da565eb0fbd.json and https://artists.proofprofile.net/proofs/artist/ab6f9075-c7ee-42e6-806f-4da565eb0fbd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Historical Piano Recital Series, Vol. II
Sonata in A-Flat Major, Hob. XVI/46, III
Bagatelle in E-Flat Major, Op. 126 no. 6
Historical Piano Recital Series, Vol. III
Polonaise Fantasie In A-Flat Major, Op. 61
Sonata in B Minor, S. 178, Andante sostenuto
Sonata in B Minor, S. 178, Allegro energico
Sonata in B Minor, S. 178, Sempre f ed agitato
Schubert: Piano Sonata in B-Flat Major, D. 960: I. Molto moderato
Schubert: Piano Sonata in B-Flat Major, D. 960: II. Andante sostenuto
Schubert: Piano Sonata in B-Flat Major, D. 960: III. [Scherzo] Allegro vivace con delicatezza
Schubert: Piano Sonata in B-Flat Major, D. 960: IV. Allegro ma non troppo
Liszt: Sonata in B Minor, S. 178: Lento assai - Allegro energico - Grandioso - Recitativo
Liszt: Sonata in B Minor, S. 178: Andante sostenuto - Quasi adagio
Liszt: Sonata in B Minor, S. 178: Allegro energico
Liszt: Sonata in B Minor, S. 178: Allegro energico- Stretta quasi presto - Presto - Prestissimo - Andante sostenuto - Allegro moderato - Lento assai
Liszt: Deuxième année: Italie, Il Penseroso, S.161/2
Liszt: Sonata in B Minor, S. 178, on an 1886 Bechstein: Lento assai - Allegro energico - Grandioso - Recitativo
Liszt: Sonata in B Minor, S. 178, on an 1886 Bechstein: Andante sostenuto - Quasi adagio
Liszt: Sonata in B Minor, S. 178, on an 1886 Bechstein: Allegro energico
Liszt: Sonata in B Minor, S. 178, on an 1886 Bechstein: Allegro energico- Stretta quasi presto - Presto - Prestissimo - Andante sostenuto - Allegro moderato - Lento assai
Bach/Busoni: Chorale Prelude, Ich Ruf Zu Dir, Herr, BWV 639
Bach/Busoni: Chorale Prelude, Nun Komm' Der Heiden Heiland, BWV 659
Steven Shares His First Experience Learning The Music Of Liszt
Schubert/Liszt: Erlkönig S.558/4 (Live Performance, 2011)
Lassen/Liszt: Lose, Himmel, Meine Seele, (Live Performance, 2011)
Steven Speaks Of His Admiration For Keith Jarrett
Somewhere Over The Rainbow (Live Performance, 2013)
Steven Talks About The Art Of Improvisation
Haydn: Keyboard Sonata in G Major, Hob. XVI/40, I: I. Allegretto e innocente
Haydn: Keyboard Sonata in A-Flat Major, Hob. XVI/46: I. Allegro moderato
Haydn: Keyboard Sonata in A-Flat Major, Hob. XVI/46: II. Adagio
Haydn: Keyboard Sonata in A-Flat Major, Hob. XVI/46: III. Finale. Presto
Haydn: Keyboard Sonata in C-Sharp Minor, Hob. XVI/36: I. Moderato
Haydn: Keyboard Sonata in C-Sharp Minor, Hob. XVI/36: II. Scherzando. Allegro con brio
Haydn: Keyboard Sonata in C-Sharp Minor, Hob. XVI/36: III. Menuetto
Haydn: Keyboard Sonata in C Major, Hob. XVI/48: I. Andante con espressione
Haydn: Keyboard Sonata in C Major, Hob. XVI/48: II. Rondo. Presto
Haydn: Keyboard Sonata in E-Flat Major, Hob. XVI/49: I. Allegro
Haydn: Keyboard Sonata in E-Flat Major, Hob. XVI/49: II. Adagio e cantabile
Haydn: Keyboard Sonata in E-Flat Major, Hob. XVI/49: III. Tempo di Menuet
Bach/Busoni: Chorale Prelude No.5, Ich ruf' zu dir, Herr, BWV 639
Schubert/Liszt: Soirée de Vienne in A Major, S. 427/7
Liszt: Consolation in D-Flat Major, S. 172/3
Liszt: Legend No. 2, St François de Paule: marchant sur les flots (St. Francis walks on the waves) S. 175/2
Lassen/Liszt: Löse, Himmel, meine Seele, S. 494i
Schumann: from Kinderszenen, Op. 15: Von fremden Ländern und Menschen (Of Foreign Lands And Peoples)
Schumann: from Kinderszenen, Op. 15: Kuriose Geschichte (A Curious Story)
Schumann: from Kinderszenen, Op. 15: Bittendes Kind (Pleading Child)
Schumann: from Kinderszenen, Op. 15: Wichtige Begebenheit (An Important Event)
Schumann: from Kinderszenen, Op. 15: Träumerei (Dreaming)
Schumann: from Kinderszenen, Op. 15: Kind im Einschlummern (Child Falling Asleep)
Schumann: from Kinderszenen, Op. 15: Der Dichter spricht (The Poet Speaks)
Chopin: Polonaise in C-Sharp Minor, Op. 26 No. 1
Chopin: Waltz in A-Flat Major, Op. 69 No. 1
Chopin: Polonaise in A-Flat Major, Op. 53 (Heroic)
Wagner/Liszt: Phantasiestück über Motive aus 'Rienzi, S. 439
Grieg: Arietta, Op. 12 No. 1, from Lyric Pieces
Grieg: Butterfly, Op. 43 No. 1, from Lyric Pieces
Grieg: Nocturne, Op. 54 No. 4, from Lyric Pieces
Grieg: Grandmother’s Minuet, Op. 68 No. 2, from Lyric Pieces
Grieg: At Your Feet, Op. 68 No. 3, from Lyric Pieces
Grieg: At the Cradle, Op. 68 No. 5, from Lyric Pieces
Grieg: Remembrances, Op. 71 No. 7, from Lyric Pieces
Brahms: 7 Fantasies, Op. 116: Capriccio. Presto energico
Brahms: 7 Fantasies, Op. 116: Intermezzo. Andante
Brahms: 7 Fantasies, Op. 116: Capriccio. Allegro passionato
Brahms: 7 Fantasies, Op. 116: Intermezzo. Adagio
Brahms: 7 Fantasies, Op. 116: Intermezzo. Andante con grazia ed intimissimo sentimento
Brahms: 7 Fantasies, Op. 116: Intermezzo. Andantino teneramente
Brahms: 7 Fantasies, Op. 116: Capriccio. Allegro agitato
Brahms: Intermezzo in E-Flat Major, Op. 117 No. 1
Brahms: Intermezzo in B-Flat Minor, Op. 117 No. 2
Gabunia: 5 Pieces From A Pupil’s Diary (1978): Morning
Gabunia: 5 Pieces From A Pupil’s Diary (1978): On the Way to School
Gabunia: 5 Pieces From A Pupil’s Diary (1978): School Bell
Gabunia: 5 Pieces From A Pupil’s Diary (1978): Pop
Gabunia: 5 Pieces From A Pupil’s Diary (1978): Dream
Schnittke: Concerto for Piano and Strings (1979)
Mohammed Fairouz: Piano Sonata No. 2, "The Last Resistance" (2011): I. The Last Resistance
Mohammed Fairouz: Piano Sonata No. 2, "The Last Resistance" (2011): II. Retro Recollections on 21st and 8th
Mohammed Fairouz: Piano Sonata No. 2, "The Last Resistance" (2011): III. Freud Goes to Abu Ghraib
Mohammed Fairouz: Piano Sonata No. 2, "The Last Resistance" (2011): IV. Men and Women in Dark Times
Chopin: Polonaise-Fantaisie in A-Flat Major, Op 61
Liszt: Aux cyprès de la Villa d'Este I, from Années de Pèlerinage III, S.163
Liszt: Transcendental Etude No 1, Preludio, S. 139
Liszt: Transcendental Etude No 3, Paysage, S. 139
Liszt: Transcendental Etude No 8, Wilde Jagd, S. 139
Liszt: Transcendental Etude No 11, Harmonies du Soir, S. 139
Rachmaninoff: Prelude in G-Sharp Minor, Op. 32 No. 12
Bach/Busoni: Chorale Prelude No. 3, Nun komm' der Heiden Heiland, BWV 659
Scarlatti: Keyboard Sonata in A Minor, K. 149 (On Horowitz’s Piano)
Scarlatti: Keyboard Sonata in D Minor, K. 213 (On Horowitz’s Piano)
Scarlatti: Keyboard Sonata in E-Flat Major, K. 474 (On Horowitz’s Piano)
Scarlatti: Keyboard Sonata in F Minor, K. 184
Scriabin: Etude in C-Sharp Minor, Op. 2 No. 1
Scriabin: Etude in D-Sharp Minor, Op. 8 No. 12
Scriabin: Prelude in G-Flat Major, Op. 16 No. 3
Mozart: Piano Sonata in C Major, K. 330: I. Allegro moderato
Mozart: Piano Sonata in C Major, K. 330: II. Andante cantabile
Mozart: Piano Sonata in C Major, K. 330: III. Allegretto
Arensky: Elegie in G Minor, Op. 36 No. 16
Rachmaninoff: Etude in D major, Op. 39 No. 9
Rachmaninoff: Moment musical in B Minor, Op. 16 No. 3
Queen/Spooner: Concert Etude for Vladimir Horowitz (2014)
Steven Introduces Memories And Inspirations
Steven Shares His Earliest Musical Experiences
Steven Talks About His First Piano Lessons
Chopin: Nocturne in E-Flat Major, Op. 9 No. 2
Grieg: Arietta, From Lyric Pieces, Op. 12 No. 1
Steven Discusses The Influence Of Vladimir Horowitz
Rachmaninoff: Etude Tableau In D Major, Op. 39 No. 9
Scriabin: Prelude In G-Flat Major, Op. 16 No. 3
Beethoven: Sonata in C-Sharp Minor, Op. 27 No. 1, I (Moonlight)
Rachmaninoff: Prelude in C-Sharp, Op. 3 No. 2
Schumann: Romanze in F-Sharp Major, Op. 28 No. 2
Schumann: Traumerei from Kinderszenen, Op. 15
Chopin: Prelude in D-Flat Major, Op. 28 No. 15 (Raindrop)
Brahms: Waltz in A-Flat Major, Op. 39 No. 15
Brahms: Intermezzo in A Major, Op. 118 No. 2
Debussy: from Suite Bergamasque, Clair de Lune
Debussy: Preludes, Book I (1910): Danseuses de Delphes
Debussy: Preludes, Book I (1910): Voiles
Debussy: Preludes, Book I (1910): Le vent dans la plaine
Debussy: Preludes, Book I (1910): Les sons et les parfums tournent dans l'air du soir
Debussy: Preludes, Book I (1910): Les collines d'Anacapri
Debussy: Preludes, Book I (1910): Des pas sur la neige
Debussy: Preludes, Book I (1910): Ce qu'a vu le vent d'Ouest
Debussy: Preludes, Book I (1910): La fille aux cheveux de lin
Debussy: Preludes, Book I (1910): La sérénade interrompue
Debussy: Preludes, Book I (1910): La Cathédrale engloutie
Debussy: Preludes, Book I (1910): La danse de Puck
Debussy: Preludes, Book I (1910): Minstrels
Debussy: Preludes, Book I (1910) on an 1886 Bechstein Concert Grand: Danseuses de Delphes
Debussy: Preludes, Book I (1910) on an 1886 Bechstein Concert Grand: Voiles
Debussy: Preludes, Book I (1910) on an 1886 Bechstein Concert Grand: Le vent dans la plaine
Debussy: Preludes, Book I (1910) on an 1886 Bechstein Concert Grand: Les sons et les parfums tournent dans l'air du soir
Debussy: Preludes, Book I (1910) on an 1886 Bechstein Concert Grand: Les collines d'Anacapri
Debussy: Preludes, Book I (1910) on an 1886 Bechstein Concert Grand: Des pas sur la neige
Debussy: Preludes, Book I (1910) on an 1886 Bechstein Concert Grand: Ce qu'a vu le vent d'Ouest
Debussy: Preludes, Book I (1910) on an 1886 Bechstein Concert Grand: La sérénade interrompue
Debussy: Preludes, Book I (1910) on an 1886 Bechstein Concert Grand: La Cathédrale engloutie
Debussy: Preludes, Book I (1910) on an 1886 Bechstein Concert Grand: La danse de Puck
Brahms, Piano Quintet in F Minor, Op. 34: I. Allegro non troppo - Borromeo String Quartet: Nicholas Kitchen, Violin; Kristopher Tong, Violin; Mai Motobuchi, Viola; Yeesun Kim, Cello (feat. The Borromeo String Quartet)
Brahms, Piano Quintet in F Minor, Op. 34: II. Andante, un poco adagio - Borromeo String Quartet: Nicholas Kitchen, Violin; Kristopher Tong, Violin; Mai Motobuchi, Viola; Yeesun Kim, Cello (feat. The Borromeo String Quartet)
Brahms, Piano Quintet in F Minor, Op. 34: III. Scherzo: Allegro - Borromeo String Quartet: Nicholas Kitchen, Violin; Kristopher Tong, Violin; Mai Motobuchi, Viola; Yeesun Kim, Cello (feat. The Borromeo String Quartet)
Brahms, Piano Quintet in F Minor, Op. 34: IV. Finale: Poco sostenuto – Allegro non troppo – Presto, non troppo - Borromeo String Quartet: Nicholas Kitchen, Violin; Kristopher Tong, Violin; Mai Motobuchi, Viola; Yeesun Kim, Cello
A discussion with the Borromeo Quartet and Steven Spooner (feat. The Borromeo String Quartet)
Schubert, Winterreise, D. 911, Chris Thompson, Baritone: Gute Nacht
Schubert, Winterreise, D. 911, Chris Thompson, Baritone: Die Wetterfahne (feat. Chris Thompson)
Schubert, Winterreise, D. 911, Chris Thompson, Baritone: Gefrorne Tränen (feat. Chris Thompson)
Schubert, Winterreise, D. 911, Chris Thompson, Baritone: Erstarrung (feat. Chris Thompson)
Schubert, Winterreise, D. 911, Chris Thompson, Baritone: Der Lindenbaum (feat. Chris Thompson)
Schubert, Winterreise, D. 911, Chris Thompson, Baritone: Wasserflut (feat. Chris Thompson)
Schubert, Winterreise, D. 911, Chris Thompson, Baritone: Auf dem Flusse (feat. Chris Thompson)
Schubert, Winterreise, D. 911, Chris Thompson, Baritone: Rückblick (feat. Chris Thompson)
Schubert, Winterreise, D. 911, Chris Thompson, Baritone: Irrlicht (feat. Chris Thompson)
Schubert, Winterreise, D. 911, Chris Thompson, Baritone: Rast (feat. Chris Thompson)
Schubert, Winterreise, D. 911, Chris Thompson, Baritone: Frühlingstraum (feat. Chris Thompson)
Schubert, Winterreise, D. 911, Chris Thompson, Baritone: Einsamkeit (feat. Chris Thompson)
Schubert, Winterreise, D. 911, Chris Thompson, Baritone: Die Post (feat. Chris Thompson)
Schubert, Winterreise, D. 911, Chris Thompson, Baritone: Der greise Kopf (feat. Chris Thompson)
Schubert, Winterreise, D. 911, Chris Thompson, Baritone: Die Krähe (feat. Chris Thompson)
Schubert, Winterreise, D. 911, Chris Thompson, Baritone: Letzte Hoffnung (feat. Chris Thompson)
Schubert, Winterreise, D. 911, Chris Thompson, Baritone: Im Dorfe (feat. Chris Thompson)
Schubert, Winterreise, D. 911, Chris Thompson, Baritone: Der stürmische Morgen (feat. Chris Thompson)
Schubert, Winterreise, D. 911, Chris Thompson, Baritone: Täuschung (feat. Chris Thompson)
Schubert, Winterreise, D. 911, Chris Thompson, Baritone: Der Wegweiser (feat. Chris Thompson)
Schubert, Winterreise, D. 911, Chris Thompson, Baritone: Das Wirtshaus (feat. Chris Thompson)
Schubert, Winterreise, D. 911, Chris Thompson, Baritone: Mut! (feat. Chris Thompson)
Schubert, Winterreise, D. 911, Chris Thompson, Baritone: Die Nebensonnen (feat. Chris Thompson)
Schubert, Winterreise, D. 911, Chris Thompson, Baritone: Der Leiermann (feat. Chris Thompson)
Piano Sonata in B minor, S. 178: Lento assai - Allegro energico - Grandioso - Recitativo
Piano Sonata in B minor, S. 178: Andante sostenuto - Quasi adagio
Piano Sonata in B minor, S. 178: Allegro energico
Piano Sonata in B minor, S. 178: Allegro energico - Stretta quasi presto - Presto - Prestissimo - Andante sostenuto - Allegro moderato - Lento assai
Piano Sonata in B minor, S. 178: Lento assai - Allegro energico - Grandioso - Recitativo - Live at Swarthout Hall
Piano Sonata in B minor, S. 178: Andante sostenuto - Quasi adagio - Live at Swarthout Hall
Piano Sonata in B minor, S. 178: Allegro energico Steven Spooner, piano - Live at Swarthout Hall
Piano Sonata in B minor, S. 178: Allegro energico - Stretta quasi presto - Presto - Prestissimo - Andante sostenuto - Allegro moderato - Lento assai - Live at Swarthout Hall
Piano Sonata in B minor, S. 178: Lento assai - Allegro energico - Grandioso - Recitativo - Live at the Spencer Art Museum on an 1886 Bechstein
Piano Sonata in B minor, S. 178: Andante sostenuto - Quasi adagio - Live at the Spencer Art Museum on an 1886 Bechstein
Piano Sonata in B minor, S. 178: Allegro energico - Live at the Spencer Art Museum on an 1886 Bechstein
Piano Sonata in B minor, S. 178: Allegro energico - Stretta quasi presto - Presto - Prestissimo - Andante sostenuto - Allegro moderato - Lento assai - Live at the Spencer Art Museum on an 1886 Bechstein
Années de pèlerinage Première année "Suisse", S. 160: I. Chapelle de Guillaume Tell
Années de pèlerinage, Première année "Suisse" S. 160: II. Au lac de Wallenstadt
Années de pèlerinage, Première année "Suisse" S. 160: VI. Vallée d'Obermann
Années de pèlerinage, Deuxième année "Italie", S. 161: I. Sposalizio
Années de pèlerinage, Deuxième année "Italie" S. 161: II. Il penseroso
Années de pèlerinage, Deuxième année "Italie" S. 161: V. Sonetto 104 del Petrarca
Années de pèlerinage, Troisième année, S. 163: II. Aux cyprès de la Villa d'Este Thrénodie I
Ständchen 'Leise flehen', S. 560-7a - Live
Die Trauergondel La lugubre gondola I, S. 200-1
Die Trauergondel La lugubre gondola II, S. 200-2
Weihnachtsbaum, S. 186 - S. 613: Psallite (Altes Weihnachtslied)
Weihnachtsbaum, S. 186 - S. 613: O heilige Nacht! – Weihnachtslied nach einer alten Weise
Weihnachtsbaum, S. 18 - S. 613: Die Hirten an der Krippe In dulci iubilo
Weihnachtsbaum, S. 186 - S. 613: Adeste fideles Gleichsam als Marsch der heiligen drei Könige
Weihnachtsbaum, S. 186 - S. 613: Altes provenzalisches Weihnachtslied
Miserere du Trovatore de Verdi Paraphrase de Concert, S. 433
Réminiscences de Robert le Diable, S. 413: Valse infernale
Phantasiestück über Motive aus Rienzi, S. 439: Santo spirito cavaliere
Liebeslied 'Widmung, von Robert Schumann', S. 566
Hungarian Rhapsody No. 5 in E Minor 'Héroïde-élégiaque', S. 244
Hungarian Rhapsody No. 13 in A minor, s. 244 - Live at the Lied Center of Kansas
Hungarian Rhapsody No. 13 in A Minor, S.244 - Live at Carnegie Hall
Études d'exécution transcendante, S. 139: I. Preludio
Études d'exécution transcendante, S. 139: III. Paysage
Études d'exécution transcendante, S. 139: VIII. Wilde Jagd
Études d'exécution transcendante, S. 139: XI. Harmonies du soir
Légendes, S. 175: II. St François de Paule marchant sur les flots
Consolations 'Pensées poétiques' No. 3 in D flat major, S. 172
Soirées de Vienne No. 7 in A Major, S. 427
Phantasiestück über Motive aus Rienzi, S. 439: Santo spirito cavaliere - Live
Ständchen 'Leise flehen', S. 560-7a - Live at Swarthout Recital Hall
Chorale Prelude No. 3 'Nun Komm' der Heiden Heiland', BWV 659
Chorale Prelude No. 5 'Ich ruf' zu dir, Herr', BWV 639