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 0x23ed58db8db2099ce436d3d4121495750519f132848c3a59cd23483f94fc626e. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0d5b6f46-403c-42ec-b69a-fcb8aed723de.json and https://artists.proofprofile.net/proofs/artist/0d5b6f46-403c-42ec-b69a-fcb8aed723de.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Our Children`s refinement Classic - Romantic School`s Piano Sonata
Piano Sonata No.4 in Aminor, Op.164 D.537 -I. Allegro ma non Troppo
Piano sonata Op.58,No.3 in B minor -I. Allegro maestoso
Piano Sonata No.4 in Aminor, Op.164 D.537 -II. Allegretto quasi Andantino
Piano sonata Op.58,No.3 in B minor -II. Scherzo molto vivace
Piano Sonata No.4 in Aminor, Op.164 D.537 -III. Allegro vivace
Piano sonata Op.58,No.3 in B minor -III. Largo
Piano sonata Op.58,No.3 in B minor -IV.Presto non tanto
Piano sonata No.3 in f minor, Op.5 -I. Allegro maestoso
Piano sonata No.3 in f minor, Op.5 -II. Andante
Piano sonata No.3 in f minor, Op.5 -III. Scherzo
Piano sonata No.3 in f minor, Op.5 -IV. Intermezzo
Piano sonata No.3 in f minor, Op.5 -V. Finale
Our Children`s refinement Classic - Choppin`s Nocturne
Nocturne No.1 in e flat minor, Op. 33 No. 1
Nocturne No.3 in A flat major, Op. 33 No. 3
Barcarolle No.5 in F sharp major, Op. 66
Nocturne No.11 in f sharp minor, Op. 104 No. 1
Barcarolle No.12 in E flat major, Op. 105b
Paganini Etude S.141 No.3 'La Campanella'
Variations serieuses, for piano in d minor, Op. 54
Andante and Variations for piano, Op. 83a (1841)
Sonata for Arpeggione and Piano in A minor D.821 - I.Allegro moderato
Sonata for Arpeggione and Piano in A minor D.821 - II.Adagio
Sonata for Arpeggione and Piano in A minor D.821 - III.Allegretto
Violin Sonata No.1, Op.78 - I.Vivace ma non troppo
Violin Sonata No.1, Op.78 - III.Allegro molto moderato
Please take Moazrt - Piano Sonata No.9,10,11,12
Piano Sonata No. 9 in a minor, KV 310 1. Allegro maestoso
Piano Sonata No. 9 in a minor, KV 310 2. Andante cantabile con espressione
Piano Sonata No. 9 in a minor, KV 310 3. Presto
Piano Sonata No. 10 in C major, KV 330 1. Allegro moderato
Piano Sonata No. 10 in C major, KV 330 2. Andante cantabile
Piano Sonata No. 10 in C major, KV 330 3. Allegretto
Piano Sonata No. 11 in A major, KV 331 1. Andante grazioso (con variazioni)
Piano Sonata No. 11 in A major, KV 331 2. Minuetto
Piano Sonata No. 11 in A major, KV 331 3. Alla turca Allegretto (터키행진곡)
Piano Sonata No. 12 in F major, KV 332 1. Allegro
Piano Sonata No. 12 in F major, KV 332 2. Adagio
Piano Sonata No. 12 in F major, KV 332 3. Allegro assai
Entrust Mozart 3 - Piano Sonata No.13,14,16,17,18
Piano Sonata No. 13 in B flat major, KV 333 1. Allegro
Piano Sonata No. 13 in B flat major, KV 333 2. Andante cantabile
Piano Sonata No. 13 in B flat major, KV 333 3. Allegretto grazioso
Piano Sonata No. 14 in c minor, KV 457 1. Allegro
Piano Sonata No. 14 in c minor, KV 457 2. Adagio
Piano Sonata No. 14 in c minor, KV 457 3. Molto allegro
Piano Sonata No. 16 in C major, KV 545 1. Allegro
Piano Sonata No. 16 in C major, KV 545 2. Andante
Piano Sonata No. 16 in C major, KV 545 3. Rondò Allegro
Piano Sonata No. 17 in B flat major, KV 570 1. Allegro
Piano Sonata No. 17 in B flat major, KV 570 2. Adagio
Piano Sonata No. 17 in B flat major, KV 570 3. Allegretto
Piano Sonata No. 18 in D major, KV 576 1. Allegro
Piano Sonata No. 18 in D major, KV 576 2. Adagio
Piano Sonata No. 18 in D major, KV 576 3. Allegretto
Piano Sonata No.1 In F Minor Op.2-1 - I. Allegro
Piano Sonata No.1 In F Minor Op.2-1 - II. Adagio
Piano Sonata No.1 In F Minor Op.2-1 - III. Menuetto Allegretto
Piano Sonata No.1 In F Minor Op.2-1 - IV. Prestissimo
Piano Sonata No.2 In A Major Op.2-2 - I. Allegro Vivace
Piano Sonata No.2 In A Major Op.2-2 - II. Largo Appassionato
Piano Sonata No.2 In A Major Op.2-2 - III. Scherzo Allegretto
Piano Sonata No.2 In A Major Op.2-2 - IV. Rondo Grazioso
Piano Sonata No.3 In C Major Op.2-3 - I. Allegro Con Brio
Piano Sonata No.3 In C Major Op.2-3 - II. Adagio
Piano Sonata No.3 In C Major Op.2-3 - III. Scherzo Allegro
Piano Sonata No.3 In C Major Op.2-3 - IV. Allegro Assai
Piano Sonata No.4 In E Flat Major Op.7 - I. Allegro Molto E Brio
Piano Sonata No.4 In E Flat Major Op.7 - II. Largo. Con Gran Espressione
Piano Sonata No.4 In E Flat Major Op.7 - III. Allegro
Piano Sonata No.4 In E Flat Major Op.7 - IV. Rondo. Poco Allegretto E Grazioso
Piano Sonata No.5 In C Minor Op.10-1 - I. Allegro Molto E Con Brio
Piano Sonata No.5 In C Minor Op.10-1 - II. Adagio Molto
Piano Sonata No.5 In C Minor Op.10-1 - III. Finale Prestissimo
Haydn : Piano Sonata No.4 Scherzo F Major
Well-Tempered Clavier Book II. Prelude And Fugue No.1 In C Major
The Well-Tempered Clavier Book II. Prelude And Fuga No.2 In C Minor
The Well-Tempered Clavier Book II. Prelude And Fuga No.3 In C Sharp Major
The Well-Tempered Clavier Book II. Prelude And Fuga No.4 In C Sharp Minor
The Well-Tempered Clavier Book II. Prelude And Fugue No.5 In D Major
The Well-Tempered Clavier Book II. Prelude And Fugue No.6 In D Minor
The Well-Tempered Clavier Book II. Prelude And Fugue No.7 In E Flat Major
The Well-Tempered Clavier Book II. Prelude And Fuga No.8 In E Flat Minor\
The Well-Tempered Clavier Book II. Prelude And Fugue No.9 In E Major
The Well-Tempered Clavier Book II. Prelude And Fuga No.10 In E Minor
The Well-Tempered Clavier Book II. Prelude And Fugue No.11 In F Major
The Well-Tempered Clavier Book II. Prelude And Fuga No.12 In F Minor
The Well-Tempered Clavier Book II. Prelude And Fugue No.13 In F Sharp Major
The Well-Tempered Clavier Book II. Prelude And Fugue No.14 In F Sharp Minor
The Well-Tempered Clavier Book II. Prelude And Fugue No.15 In G Major
The Well-Tempered Clavier Book II. Prelude And Fugue No.16 In G Minor
The Well-Tempered Clavier Book II. Prelude And Fugue No.17 In A Flat Major
The Well-Tempered Clavier Book II. Prelude And Fugue No.18 In G Sharp Minor
The Well-Tempered Clavier Book II. Prelude And Fugue No.19 In A Major
The Well-Tempered Clavier Book II. Prelude And Fugue No.20 In A Minor
The Well-Tempered Clavier Book II. Prelude And Fugue No.21 In B Flat Major
The Well-Tempered Clavier Book II. Prelude And Fugue No.22 In B Flat Minor
The Well-Tempered Clavier Book II. Prelude And Fugue No.23 In B Major
The Well-Tempered Clavier Book II. Prelude And Fugue No.24 In B Minor
Mazurka Op. 41 No. 1 in c sharp minor C sharp major
Mazurka Op. 6 No. 4 in b flat sharp minor
A Collection of healing piano songs for dogs (O'Lee)
Piano Sonata No.10 in C major, KV 330 Mov.1 Allegro Moderato
Piano Sonata No.1 In C Major K.279 Mov.1 Allegro
Piano Sonata No.6 in D major, KV 284 Mov.1 Allegro
Piano Sonata No.16 In C Major, KV 545 Mov.1 Allegro
Piano Sonata No.13 in B Flat major, KV 333 Mov.1 Allegro
Piano Sonata No.6 in D major, KV 284 Mov.2 Rondeau En Polonaise Andante
Piano Sonata No.1 In C Major K.279 Mov.2 Andante
Piano Sonata No.16 In C Major, KV 545 Mov.2 Andante
Piano Sonata No.13 in B Flat major, KV 333 Mov.2 Andante Cantabile
Piano Sonata No.10 in C major, KV 330 Mov.2 Andante Cantabile
Piano Sonata No.13 in B Flat major, KV 333 Mov.3 Allegretto Grazioso
Piano Sonata No.6 in D major, KV 284 Mov.3 Theme And Variations
Piano Sonata No.10 in C major, KV 330 Mov.3 Allegretto
Piano Sonata No.1 In C Major K.279 Mov.3 Allegro
Piano Sonata No.16 In C Major, KV 545 Mov.3 Rondo Allegretto
Piano Sonata No.2 In F Major K.280 Mov.1 Allegro Assai
Piano Sonata No.7 in C major, KV 309 Mov.1 Allegro Con Spirito
Piano Sonata No.11 in A major, KV 331 Mov.1 Theme And Variations Andante Grazioso
Piano Sonata No.14 in C minor, KV 457 Mov.1 Molto Allegro
Piano Sonata No.17 In B Flat Major, KV 570 Mov.1 Allegro
Piano Sonata No.14 in C minor, KV 457 Mov.2 Adagio
Piano Sonata No.7 in C major, KV 309 Mov.2 Andante Un Poco Adagio
Piano Sonata No.11 in A major, KV 331 Mov.2 Menuetto
Piano Sonata No.2 In F Major K.280 Mov.2 Adagio
Piano Sonata No.17 In B Flat Major, KV 570 Mov.2 Adagio
Piano Sonata No.7 in C major, KV 309 Mov.3 Rondeau Allegretto Grazioso
Piano Sonata No.2 In F Major K.280 Mov.3 Presto
Piano Sonata No.14 in C minor, KV 457 Mov.3 Allegro Assai
Piano Sonata No.17 In B Flat Major, KV 570 Mov.3 Allegretto
Piano Sonata No.11 in A major, KV 331 Mov.3 Alla Turca Allegretto
Piano Sonata No.15 In F Major, KV 533 K. 494 Mov.1 Allegro
Piano Sonata No.12 in A major, KV 332 Mov.1 Allegro
Piano Sonata No.8 in A minor, KV 310 Mov.1 Allegro Maestoso
Piano Sonata No.3 In B Flat Major K.281 Mov.1 Allegro
Piano Sonata No.18 In D Major, KV 576 Mov.1 Allegro
Piano Sonata No.15 In F Major, KV 533 K. 494 Mov.2 Andante
Piano Sonata No.12 in A major, KV 332 Mov.2 Adagio
Piano Sonata No.8 in A minor, KV 310 Mov.2 Andante Cantabile Con Espressione
Piano Sonata No.18 In D Major, KV 576 Mov.2 Adagio
Piano Sonata No.3 In B Flat Major K.281 Mov.2 Andante Amoroso
Piano Sonata No.15 In F Major, KV 533 K. 494 Mov.3 Rondo Allegretto
Piano Sonata No.3 In B Flat Major K.281 Mov.3 Rondeau Allegro
Piano Sonata No.8 in A minor, KV 310 Mov.3 Presto
Piano Sonata No.12 in A major, KV 332 Mov.3 Allegro Assai
Piano Sonata No.18 In D Major, KV 576 Mov.3 Allegretto
Piano Sonata No.4 in E flat major, KV 282 Mov.1 Adagio
Piano Sonata No.9 in D major, KV 311 Mov.1 Allegro Con Spirito
Piano Sonata No.9 in D major, KV 311 Mov.2 Andante Con Espressione
Piano Sonata No.4 in E flat major, KV 282 Mov.2 Menuetto III
Piano Sonata No.4 in E flat major, KV 282 Mov.3 Allegro
Piano Sonata No.9 in D major, KV 311 Mov.3 Rondo Allegro
Piano Sonata No.5 in G major, KV 283 Mov.1 Allegro
Piano Sonata No.5 in G major, KV 283 Mov.2 Andante
Piano Sonata No.5 in G major, KV 283 Mov.3 Presto
Beethoven - Piano Sonata No. 14 'Moonlight' 2nd Mov
Chopin - Polonaise In A Major Op.40 No.1 'Military'
Schubert - Fantasia for Piano Duo in F minor
Chopin - Andante Spianato & Grand Polonaise Brillante Op.22
12 Morceaux, Op. 40 6. Romance sans paroles
12 Morceaux, Op. 40 12. Reverie interrompue
Six Morceaux on One theme, Op. 21 1. Prelude
Six Morceaux on One theme, Op. 21 2. Fugue
Six Morceaux on One theme, Op. 21 3. Impromptu
Six Morceaux on One theme, Op. 21 4. Marche funebre
Six Morceaux on One theme, Op. 21 5. Mazurque
Six Morceaux on One theme, Op. 21 6. Scherzo
Six Pieces, Op. 19 2. Scherzo humoristique
Six Pieces, Op. 19 6. Thema Und Variationen
A Black Smoke, Dance Characteristic and Two Step
Giờ Không Cưới Khi Nào Cưới (Đức Louis Remix)