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 0x5b4aa6bac9329507e276c87b325d1489c33f0491040394fff263525f40991208. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ada5bc59-a141-4c98-8472-ef283f38dc0d.json and https://artists.proofprofile.net/proofs/artist/ada5bc59-a141-4c98-8472-ef283f38dc0d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Piano Concerto No. 2 in A-Flat Major, H. 31: IV. Allegro moderato
Piano Concerto No. 2 in A-Flat Major, H. 31: V. Poco adagio
Piano Concerto No. 2 in A-Flat Major, H. 31: VI. Rondo. Moderato innocente
Piano Concerto No. 2 in E-Flat Major, Op. 32: I. Allegro moderato
Piano Concerto No. 2 in E-Flat Major, Op. 32: II. Adagio
Piano Concerto No. 2 in E-Flat Major, Op. 32: III. Rondo. Presto
Piano Concerto in A Minor, Op. 85: I. Allegro moderato
Piano Concerto in A Minor, Op. 85: II. Larghetto
Piano Concerto in A Minor, Op. 85: III. Rondo. Allegro moderato
Concerto da camera No. 1 in A Minor, Op. 10: I. Allegro
Concerto da camera No. 1 in A Minor, Op. 10: II. Adagio
Concerto da camera No. 1 in A Minor, Op. 10: III. Allegro
Piano Concerto No. 1 in A Minor, Op. 214: I. Allegro moderato
Piano Concerto No. 1 in A Minor, Op. 214: II. Adagio con moto
Piano Concerto No. 1 in A Minor, Op. 214: Rondo, allegro con anima
Concerto No. 19 in G Minor: I. Maestoso e grandioso
Concerto No. 19 in G Minor: II. Andante sostenuto
Concerto No. 19 in G Minor: III. Allegretto con moto
Concerto for Violin, Piano and Orchestra in D Minor, MWV O 4: I. Allegro
Concerto for Violin, Piano and Orchestra in D Minor, MWV O 4: II. Adagio
Concerto for Violin, Piano and Orchestra in D Minor, MWV O 4: III. Allegro Molto
Concerto da Camera No. 3 in C-Sharp Minor, Op. 10: I. Andante con moto
Piano Concerto in C Major: I. Allegro con spirit
Piano Concerto in C Major: II. Adagio e cantabile con grande espressione
Fuga sul tema 'Io son l'umile ancella' da Adriana Lecouvreur
Piano Concerto No. 21 in C Major, K. 467: II. Andante
Piano Concerto in B-Flat Major: III. Aria. Largo
Piano Concerto in F Major, No. 2: II. Largo
Piano Concerto in F Major: II. Andante moderato
Concert for 2 Pianos and String Orchestra: II. Adagio tardissimo
Concerto for 2 Pianos and String Orchestra: II. Adagio
Piano Concerto in G Major: II. Larghetto
Piano Concerto in E-Flat Major, Op. 7 No. 5: II. Andante
Harp Concerto in B-Flat Major, HWV 294: II. Larghetto
Flute Concerto No. 2 in D Major: II. Adagio
Concerto for Cello and Strings No. 2 in D Major, G. 479: II. Adagio
Violin Concerto in G Major, D.80: II. Andante
Flute Concerto in F Major, QV5:39: II. Arioso ma un poco andante
Oboe d'amore concerto in A Major: II. Adagio
Südwestdeutsches Kammerorchester Pforzheim
Concerto for Piano, Violin & Orchestra in G Major, Op. 17: II. Andante con variazioni
Concerto No. 1 in F Major: II. Larghetto
Symphony in A, J-C- 63: II. Andante Piano
Piano Concerto No. 1 in E-Flat Major, H. 27: II. Air écossais. Adagio non troppo
Concerto-Pasticcio in C Major: III. Largo
Concerto for 2 Flutes in G Minor, QV6:a: II. Amoroso
Concerto for Cello, 2 Oboes, 2 Horns and Strings No. 8 in D Major, G. 478: II. Larghetto
Symphony in D, J-C- 22: II. Assai Andante
Concerto for Lute, Oboe and Cello in C Minor: II. Molto Adagio
Concerto for Piano 4 Hands and Orchestra in C Major, Op. 153: I. Allegro con brio
Concerto for Piano 4 Hands and Orchestra in C Major, Op. 153: II. Adagio espressivo
Concerto for Piano 4 Hands and Orchestra in C Major, Op. 153: III. Rondo alla polacca, Vivace
Violin Concerto No. 3 in A Major, Wi. 9: I. Allegro
Violin Concerto No. 3 in A Major, Wi. 9: II. Rondo, allegro
Suite in E Major for Violin & Orchestra: I. Andante appassionato
Suite in E Major for Violin & Orchestra: II. Tempo di minuetto (Allegretto)
Suite in E Major for Violin & Orchestra: III. Andante sostenuto
Suite in E Major for Violin & Orchestra: IV. Allegro
Cello Concerto in D Major (arr. Francesco Cilea): I. Andante sostenuto e grazioso
Cello Concerto in D Major (arr. Francesco Cilea): II. Larghetto
Cello Concerto in D Major (arr. Francesco Cilea): III. Allegro con bravura
Piccola Suite for Cello & Orchestra: Introduzione alla danza
Piccola Suite for Cello & Orchestra: I. Danza moderato
Piccola Suite for Cello & Orchestra: II. Notturnino andante sostenuto
Piccola Suite for Cello & Orchestra: III. Alla marcia allegro giusto
Cello Sonata in D Major: I. Allegro moderato
Cello Sonata in D Major: II. Alla Romanza. Largo doloroso
Cello Sonata in D Major: III. Allegro animato
Piano Trio in D Major: I. Allegro sostenuto
Piano Trio in D Major: II. Scherzo. Presto
Piano Trio in D Major: III. Andante molto espressivo
Piano Trio in D Major: IV. Allegro con fuoco
Vocalizzo da concerto No. 2 in D Minor. Canto (Lento doloroso)
Theme and Variations (Andante sostenuto - Poco più mosso - Allegro - Andante - Moderato)
La petite coquette - Air de danse, Op. 9
C'est toi que j'aime - Impromptu à la Mazurka, Op. 10
Trois petits morceaux, Op. 28: I. Loin dans la mer
Trois petits morceaux, Op. 28: II. Feuille d'album
Trois petits morceaux, Op. 28: III. Pensée espagnole
Johannes Brahms: The Viola Sonatas, Op. 120
Viola Sonata No. 1 in F Minor, Op. 120 No. 1: I. Allegro appassionato
Viola Sonata No. 1 in F Minor, Op. 120 No. 1: II. Andante un poco adagio
Viola Sonata No. 1 in F Minor, Op. 120 No. 1: III. Allegretto grazioso
Viola Sonata No. 1 in F Minor, Op. 120 No. 1: IV. Vivace
Viola Sonata No. 2 in E-Flat Major, Op. 120 No. 2: I. Allegro amabile
Viola Sonata No. 2 in E-Flat Major, Op. 120 No. 2: II. Allegro appassionato
Viola Sonata No. 2 in E-Flat Major, Op. 120 No. 2: III. Andante con moto
Viola Sonata No. 2 in E-Flat Major, Op. 120 No. 2: IV. Allegro
Johannes Brahms: 21 Hungarian Dances, WoO 1 (For Piano 4 Hands)
21 Hungarian Dances, WoO 1: No. 1 in G Minor, Allegro molto
21 Hungarian Dances, WoO 1: No. 2 in D Minor, Allegro non assai
21 Hungarian Dances, WoO 1: No. 3 in F Major, Allegretto
21 Hungarian Dances, WoO 1: No. 4 in F Minor, Poco sostenuto
21 Hungarian Dances, WoO 1: No. 5 in F-Sharp Minor, Allegro
21 Hungarian Dances, WoO 1: No. 6 in D-Flat Major, Vivace
21 Hungarian Dances, WoO 1: No. 7 in F Major, Allegretto
21 Hungarian Dances, WoO 1: No. 8 in A Minor, Presto
21 Hungarian Dances, WoO 1: No. 9 in E Minor, Allegro non troppo
21 Hungarian Dances, WoO 1: No. 10 in E Major, Presto
21 Hungarian Dances, WoO 1: No. 11 in D Minor, Poco andante
21 Hungarian Dances, WoO 1: No. 12 in D Minor, Presto
21 Hungarian Dances, WoO 1: No. 13 in D Major, Andantino grazioso
21 Hungarian Dances, WoO 1: No. 14 in D Minor, Un poco andante
21 Hungarian Dances, WoO 1: No. 15 in B-Flat Major, Allegretto grazioso
21 Hungarian Dances, WoO 1: No. 16 in F Minor, Con moto
21 Hungarian Dances, WoO 1: No. 17 in F-Sharp Minor, Andantino
21 Hungarian Dances, WoO 1: No. 18 in D Major, Molto vivace
21 Hungarian Dances, WoO 1: No. 19 in B Minor, Allegretto
21 Hungarian Dances, WoO 1: No. 20 in E Minor, Poco allegretto
21 Hungarian Dances, WoO 1: No. 21 in E Minor, Vivace
Messa per soli, coro da camera e piano: I. Kyrie
Messa per soli, coro da camera e piano: II. Gloria, et in terra
Messa per soli, coro da camera e piano: III. Domine Deus
Messa per soli, coro da camera e piano: IV. Qui tollis
Messa per soli, coro da camera e piano: V. Quoniam
Messa per soli, coro da camera e piano: VI. Cum Sancto Spiritu
Messa per soli, coro da camera e piano: VII. Sanctus
Messa per soli, coro da camera e piano: VIII. Agnus Dei
Bach: Concertos for two Pianos and Strings
Concerto in C minor BWV1060: III. Allegro
Concerto in C major BWV1061: I. Senza indicazioni di tempo
Concerto in C major BWV1061: II. Adagio ovvero Largo
Concerto in C minor BWV1062: I. Senza indicazioni di tempo
Concerto in C minor BWV1062: II. Andante
Concerto in C minor BWV1062: III. Allegro assai
Bach: Concertos for three and four Pianos and Strings
Concerto in D Minor BWV1063: II. Alla siciliana
Concerto in D Minor BWV1063: III. Allegro
Concerto in C Major BWV1064: III. Allegro
Concerto in A Minor BWV1065: III. Allegro
Cantate, canzonette e romances da camera
Album di 10 pezzi pianistici per la gioventù: No. 1, Gocce di rugiada
Album di 10 pezzi pianistici per la gioventù: No. 2, L'arcolaio