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 0x277040d30fe611f90825171c4991f209c85cfa254521963bb851d7fee4ad4a6f. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f92106d-18fa-4160-9fe7-a2a947d58aef.json and https://artists.proofprofile.net/proofs/artist/0f92106d-18fa-4160-9fe7-a2a947d58aef.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lyadov, Glinka, Borodin, Arensky, Lyapunov, Rubinstein, Gubaidulina
A Greeting to My Homeland: II. Barcarolle
A Greeting to My Homeland: I. Souvenir d’une mazurka
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ac96c92c1a7af259fe8df6311fc914af47aeed13d8df8758393f5ce151dcfc. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUAAX2001193.
Verschiedene Stücke, Op. 93, Book 9 "12 Minatures": No. 5, Serenade in D Minor
Soirees Musicales, Op. 109: No. 2, Valse in E Minor
3 Morceaux, Op. 16: No. 1, Impromptu in F Major
Album de Peterhof, Op. 75: No. 10, Mazurka in D Minor
6 Pieces caracteristiques, Op. 50: No. 3, Barcarole in G Minor
3 Morceaux, Op. 11: No. 1, Prelude in B Minor
3 Morceaux, Op. 10: No. 1, Prelude in D Flat Major
3 Morceaux, Op. 11: No. 3, Mazurka in F-Sharp Minor
3 Morceaux, Op. 57: No. 3, Mazurka in F Minor
2 Morceaux, Op. 9: No. 1, Valse in F-Sharp Minor
Pres de la Mer, Op. 52: No. 4, Esquisse in G-Flat Major
12 Preludes, Op. 63: No. 1, Prelude in A Minor
24 Morceaux Caracteristiques, Op. 36: No. 15, Le ruisseau dans la foret
24 Morceaux Caracteristiques, Op. 36: No. 10, Ne m’oubliez pas
7 Preludes, Op. 6: No. 1, Prelude in B-Flat Major
7 Preludes, Op. 6: No. 3, Prelude in E-Flat Minor
12 Etudes d'execution transcendante, Op. 11: No. 1, Berceuse
8 Variations on a French Song, Op. 10, D. 624
3 Marches militaires, Op. 51, D. 733: No. 3, Allegro moderato
3 Marches héroïques, Op. 27, D. 602: No. 3, Moderato
6 Grandes marches, Op. 40, D. 819: No. 5 in E-Flat Minor
2 Marches caractéristiques, Op. posth. 121, D. 968b No. 2
Divertissement, Op. 84: No. 1, Andantino varié in B Minor
Sonata for 2 Pianos and Percussion, Sz. 110: I. Assai lento - Allegro molto
Sonata for 2 Pianos and Percussion, Sz. 110: II. Lento, ma non troppo
Sonata for 2 Pianos and Percussion, Sz. 110: III. Allegro non troppo
Sonata for Flute and Harpsichord in B Minor, BWV 1030: I. Andante
Sonata for Flute and Harpsichord in C Major, BWV 1033: I. Andante – Presto
Sonata for Flute and Harpsichord in B Minor, BWV 1030: II. Largo e dolce
Sonata for Flute and Harpsichord in C Major, BWV 1033: II. Allegro
Sonata for Flute and Harpsichord in B Minor, BWV 1030: III. Presto – Allegro
Sonata for Flute and Harpsichord in C Major, BWV 1033: III. Adagio
Sonata for Flute and Harpsichord in E-Flat Major, BWV 1031: I. Allegro moderato
Sonata for Flute and Harpsichord in C Major, BWV 1033: IV. Menuetto I
Sonata for Flute and Harpsichord in E-Flat Major, BWV 1031: II. Siciliano
Sonata for Flute and Harpsichord in C Major, BWV 1033: V. Menuetto II – Menuetto I da capo
Sonata for Flute and Harpsichord in E-Flat Major, BWV 1031: III. Allegro
Sonata for Flute and Harpsichord in E Minor, BWV 1034: I. Adagio ma non tanto
Sonata for Flute and Harpsichord in A Major, BWV 1032: I. Largo e dolce
Sonata for Flute and Harpsichord in E Minor, BWV 1034: II. Allegro
Sonata for Flute and Harpsichord in A Major, BWV 1032: II. Allegro
Sonata for Flute and Harpsichord in E Minor, BWV 1034: III. Andante
Partita for Solo Flute in A Minor, BWV 1013: I. Allemande
Sonata for Flute and Harpsichord in E Minor, BWV 1034: IV. Allegro
Partita for Solo Flute in A Minor, BWV 1013: II. Courante
Sonata for Flute and Harpsichord in E Major, BWV 1035: I. Adagio ma non tanto
Partita for Solo Flute in A Minor, BWV 1013: III. Sarabande
Sonata for Flute and Harpsichord in E Major, BWV 1035: II. Allegro
Partita for Solo Flute in A Minor, BWV 1013: IV. Bourrée Anglaise
Sonata for Flute and Harpsichord in E Major, BWV 1035: III. Siciliano
Sonata for Flute and Harpsichord in E Major, BWV 1035: IV. Allegro assai
Variations on a Theme of Corelli, Op. 42
Lyapunov: Piano Concerto No. 2 in E Major, Op. 38 - Tchaikovsky: Concert Fantasia for Piano and Orchestra in G Major, Op. 56
Concert Fantasia for Piano and Orchestra in G Major, Op. 56: I. Quasi rondo. Andante mosso
Concert Fantasia for Piano and Orchestra in G Major, Op. 56: II. Contrastes
From the Piano Duet History of the Late XVIII - Early XIX Century
Sonata for 4 Hands in C Major: I. Allegro
Sonata for 4 Hands in C Major: II. Rondo. Allegretto
5 Piano Sonatas and a Duet, Op. 1a: No. 6 in B-Flat Major, Duetto - I. Allegro di molto
5 Piano Sonatas and a Duet, Op. 1a: No. 6 in B-Flat Major, Duetto - II. Tempo di Minuetto. Allegretto
Sonata No. 4 for Piano Four Hands in C Major: I. Affettuoso
Sonata No. 4 for Piano Four Hands in C Major: II. Allegro
Sonata for Piano Four Hands in F Major, Op. 22: I. Adagio. Allegro molto
Sonata for Piano Four Hands in F Major, Op. 22: II. Adagio con espressione
Sonata for Piano Four Hands in F Major, Op. 22: III. Rondo. Allegretto
8 Pieces, Op. 60: No. 5 in D Minor, Alla Siciliana. Allegro, J. 254
6 Petites pièces faciles, Op. 3: No. 6 in C Major, Rondo, J. 14
6 Pièces, Op. 10a: No. 6 in E-Flat Major, Rondo, J. 86
8 Pieces, Op. 60: No. 8 in B-Flat Major, Rondo. Scherzando vivace, J. 266
Cello Sonata in B-Flat Major, Op. 14, No. 1, RV 47: I. Largamente, ma Andante
Cello Sonata in B-Flat Major, Op. 14, No. 1, RV 47: II. Allegro
Cello Sonata in B-Flat Major, Op. 14, No. 1, RV 47: III. Largo ben declamato
Cello Sonata in B-Flat Major, Op. 14, No. 1, RV 47: IV. Allegro
Cello Sonata in F Major, Op. 14, No. 2, RV 41: I. Andante, senza trascinare
Cello Sonata in F Major, Op. 14, No. 2, RV 41: II. Allegro misurato
Cello Sonata in F Major, Op. 14, No. 2, RV 41: III. Largo molto espressivo
Cello Sonata in F Major, Op. 14, No. 2, RV 41: IV. Allegro
Cello Sonata in A Minor, Op. 14, No. 3, RV 43: I. Maestoso, con grandezza
Cello Sonata in A Minor, Op. 14, No. 3, RV 43: II. Allegro sostenuto
Cello Sonata in A Minor, Op. 14, No. 3, RV 43: III. Largo
Cello Sonata in A Minor, Op. 14, No. 3, RV 43: IV. Allegro non troppo
Cello Sonata in B-Flat Major, Op. 14, No. 4, RV 45: I. Andante sostenuto
Cello Sonata in B-Flat Major, Op. 14, No. 4, RV 45: II. Allegro
Cello Sonata in B-Flat Major, Op. 14, No. 4, RV 45: III. Largo
Cello Sonata in B-Flat Major, Op. 14, No. 4, RV 45: IV. Moderato e grazioso
Cello Sonata in E Minor, Op. 14, No. 5, RV 40: I. Largo
Cello Sonata in E Minor, Op. 14, No. 5, RV 40: II. Allegro con spirito
Cello Sonata in E Minor, Op. 14, No. 5, RV 40: III. Largo tranquillo alla Siciliana
Cello Sonata in E Minor, Op. 14, No. 5, RV 40: IV. Allegro
Cello Sonata in B-Flat Major, Op. 14, No. 6, RV 46: I. Allegro sostenuto
Cello Sonata in B-Flat Major, Op. 14, No. 6, RV 46: II. Allegro non troppo
Cello Sonata in B-Flat Major, Op. 14, No. 6, RV 46: III. Largo doloroso
Cello Sonata in B-Flat Major, Op. 14, No. 6, RV 46: IV. Allegro spirituoso
Efrem Podgaits: Bakhchiev-Concerto, Lips-Concerto
Bakhchiev-concerto for Four Hands Piano and String Orchestra, Op. 115: I. Con moto
Bakhchiev-concerto for Four Hands Piano and String Orchestra, Op. 115: II. Scherzoso
Lips-concerto for Bayan and Symphony Orchestra, Op. 166
Symphony Orchestra of the Gnessins State Academy of Music
Three choral work: No. 2, To a Young Child
Three choral work: No. 3, The Storm Cloud
Tchaikovsky: 16 Songs for Children, Op. 54
16 Songs for Children, Op. 54: I. Granny and Grandson
16 Songs for Children, Op. 54: II. Little Bird
16 Songs for Children, Op. 54: III. Spring, The Grass Grows Green
16 Songs for Children, Op. 54: IV. My Little Garden
16 Songs for Children, Op. 54: V. Legend
16 Songs for Children, Op. 54: VI. On the Bank
16 Songs for Children, Op. 54: VII. Winter Evening
16 Songs for Children, Op. 54: VIII. The Cuckoo
16 Songs for Children, Op. 54: IX. Spring, The Snow is Already Melting
16 Songs for Children, Op. 54: X. Lullaby in a Storm
16 Songs for Children, Op. 54: XI. The Little Flower
16 Songs for Children, Op. 54: XII. Winter
16 Songs for Children, Op. 54: XIII. Spring Song
16 Songs for Children, Op. 54: XIV. Autumn
16 Songs for Children, Op. 54: XV. The Swallow
16 Songs for Children, Op. 54: XVI. My Lizochek
A Farewell to Saint Petersburg: X. The Lark
6 Lieder von Heine, Op. 32: XI. Der Asra
4 Romances, Op. 42: III. The Clouds Begin to Scatter
25 Poems by Pushkin, Op. 57: No. 25, Desire
7 Poems by Pushkin and Lermontov, Op. 33: IV. The Burned Letter
6 Romances, Op. 4: IV. Do Not Sing, My Beauty
Sonata for Two Pianos and Percussion, Sz. 110: I. Assai lento - Allegro molto
Sonata for Two Pianos and Percussion, Sz. 110: II. Lento ma non troppo
Sonata for Two Pianos and Percussion, Sz. 110: III. Allegro non troppo
A Midsummer Night’s Dream, Op. 61: No. 1, Scherzo