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 0xb970785e6157bb67c33dd3f5733d7ba331a3c76b58d0368c63349fe20dc5c6ba. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/973f6287-abd0-41da-8bc6-c32f162059b4.json and https://artists.proofprofile.net/proofs/artist/973f6287-abd0-41da-8bc6-c32f162059b4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Valses nobles et sentimentales, M. 61: No. 1, Modéré, très franc
Valses nobles et sentimentales, M. 61: No. 2, Assez lent, avec une expression intense
Valses nobles et sentimentales, M. 61: No. 3, Modéré
Valses nobles et sentimentales, M. 61: No. 4, Assez animé
Valses nobles et sentimentales, M. 61: No. 5, Presque lent, dans un sentiment intime
Valses nobles et sentimentales, M. 61: No. 6, Vif
Valses nobles et sentimentales, M. 61: No. 7, Moins vif
Valses nobles et sentimentales, M. 61: No. 8, Épilogue. Lent
Zirkustänze: No. 4, Vier Strophen vom Heimweh
Zirkustänze: No. 10, Venezianisches Gondellied
Zirkustänze: No. 11, Bayerisch-babylonischer Marsch
Fantaisie-impromptu in C-Sharp Minor, Op. 66
Concerto No. 1 in D Minor, BWV 1052: I. Allegro
Concerto No. 4 in A Major, BWV 1055: I. Allegro
Concerto No. 1 in D Minor, BWV 1052: II. Adagio
Concerto No. 4 in A Major, BWV 1055: II. Larghette
Concerto No. 1 in D Minor, BWV 1052: III. Allegro
Concerto No. 4 in A Major, BWV 1055: III. Allegro ma non tanto
Concerto for Two Keyboards in C Minor, BWV 1060: I. Allegro
Concerto No. 5 in F Minor, BWV 1056: I. [...]
Concerto for Two Keyboards in C Minor, BWV 1060: II. Largo ovvero adagio
Concerto No. 5 in F Minor, BWV 1056: II. Largo
Concerto for Two Keyboards in C Minor, BWV 1060: III. Adagio
Concerto No. 5 in F Minor, BWV 1056: III. Presto
Concerto No. 7 in G Minor, BWV 1058: I. [...]
Concerto for Two Keyboards in C Major, BWV 1061: I. [...]
Concerto No. 7 in G Minor, BWV 1058: II. Andante
Concerto for Two Keyboards in C Major, BWV 1061: II. Largo ovvero adagio
Concerto No. 7 in G Minor, BWV 1058: III. Allegro assai
Concerto for Two Keyboards in C Major, BWV 1061: III. Fuga. Vivace
Concerto for Two Keyboards in C Minor, BWV 1062: I. [...]
Concerto for Three Keyboards in D Minor, BWV 1063: I. [...]
Concerto for Two Keyboards in C Minor, BWV 1062: II. Andante e plano
Concerto for Three Keyboards in D Minor, BWV 1063: II. Alla sicilliana
Concerto for Two Keyboards in C Minor, BWV 1062: III. Allegro assai
Concerto for Three Keyboards in D Minor, BWV 1063: III. Allegro
Concerto for Three Keyboards in C Major, BWV 1064: I. Allegro
Concerto for Four Keyboards in A Minor BWV 1065 (Arranged for Three Pianos): I. [...]
Concerto for Three Keyboards in C Major, BWV 1064: II. Adagio
Concerto for Four Keyboards in A Minor BWV 1065 (Arranged for Three Pianos): II. Largo
Concerto for Three Keyboards in C Major, BWV 1064: III. Allegro assai
Concerto for Four Keyboards in A Minor BWV 1065 (Arranged for Three Pianos): III. Allegro
Rachmaninov: Piano Concerto No. 2 in C Minor, Op. 18 & Rhapsody on a Theme of Paganini
Piano Concerto No. 2 in C Minor, Op. 18: I. Moderato
Piano Concerto No. 2 in C Minor, Op. 18: II. Adagio sostenuto
Piano Concerto No. 2 in C Minor, Op. 18: III. Allegro scherzando
Rhapsody on a Theme of Paganini, Op. 43: I. Introduction (Allegro vivace) — Variation 1. Precedente
Rhapsody on a Theme of Paganini, Op. 43: II. Tema (L'istesso tempo)
Rhapsody on a Theme of Paganini, Op. 43: III. Variation 2. L'istesso tempo
Rhapsody on a Theme of Paganini, Op. 43: IV. Variation 3. L'istesso tempo
Rhapsody on a Theme of Paganini, Op. 43: V. Variation 4. Più vivo
Rhapsody on a Theme of Paganini, Op. 43: VI. Variation 5. Tempo precedente
Rhapsody on a Theme of Paganini, Op. 43: VII. Variation 6. L'istesso tempo
Rhapsody on a Theme of Paganini, Op. 43: VIII. Variation 7. Meno mosso (A tempo moderato)
Rhapsody on a Theme of Paganini, Op. 43: IX. Variation 8. Tempo I
Rhapsody on a Theme of Paganini, Op. 43: X. Variation 9. L'istesso tempo
Rhapsody on a Theme of Paganini, Op. 43: XI. Variation 10. L'istesso tempo
Rhapsody on a Theme of Paganini, Op. 43: XII. Variation 11. Moderato
Rhapsody on a Theme of Paganini, Op. 43: XIII. Variation 12. Tempo di minuetto
Rhapsody on a Theme of Paganini, Op. 43: XIV. Variation 13. Allegro
Rhapsody on a Theme of Paganini, Op. 43: XV. Variation 14. L'istesso tempo
Rhapsody on a Theme of Paganini, Op. 43: XVI. Variation 15. Più vivo scherzando
Rhapsody on a Theme of Paganini, Op. 43: XVII. Variation 16. Allegretto
Rhapsody on a Theme of Paganini, Op. 43: XVIII. Variation 17. Allegretto
Rhapsody on a Theme of Paganini, Op. 43: XIX. Variation 18. Andante cantabile
Rhapsody on a Theme of Paganini, Op. 43: XX. Variation 19. A tempo vivace
Rhapsody on a Theme of Paganini, Op. 43: XXI. Variation 20. Un poco più vivo
Rhapsody on a Theme of Paganini, Op. 43: XXII. Variation 21. Un poco più vivo
Rhapsody on a Theme of Paganini, Op. 43: XXIII. Variation 22. Un poco più vivo (Alla breve)
Rhapsody on a Theme of Paganini, Op. 43: XXIV. Variation 23. L'istesso tempo
Rhapsody on a Theme of Paganini, Op. 43: XXV. Variation 24. A tempo un poco meno mosso
5 Studies for Piano, Anh.1a/1: Chaconne by J. S. Bach in D Minor
8 Klavierstücke, Op. 76: I. Capriccio in F-Sharp Minor (Un poco agitato)
8 Klavierstücke, Op. 76: II. Capriccio in B Minor (Allegretto non troppo)
8 Klavierstücke, Op. 76: III. Intermezzo in A-Flat Major (Grazioso)
8 Klavierstücke, Op. 76: IV. Intermezzo in B-Flat Major (Allegretto grazioso)
8 Klavierstücke, Op. 76: V. Capriccio in C-Sharp Minor (Agitato, ma non troppo - Presto)
8 Klavierstücke, Op. 76: VI. Intermezzo in A Major (Andante con moto)
8 Klavierstücke, Op. 76: VII. Intermezzo in A Minor (Moderato semplice)
8 Klavierstücke, Op. 76: VIII. Capriccio in C Major (Grazioso ed un poco vivace)
2 Rhapsodies, Op. 79: No. 1 in B Minor (Agitato)
2 Rhapsodies, Op. 79: No. 2 in G Minor (Molto passionato, ma non troppo allegro)
7 Fantasies, Op. 116: I. Capriccio in D Minor (Presto energio)
7 Fantasies, Op. 116: II. Intermezzo in A Minor (Andante)
7 Fantasies, Op. 116: III. Capriccio in G Minor (Allegro passionato)
7 Fantasies, Op. 116: IV. Intermezzo in E Major (Adagio)
7 Fantasies, Op. 116: V. Intermezzo in E Minor (Andante con grazia ed intimissimo sentimento)
7 Fantasies, Op. 116: VI. Intermezzo in E Major (Andantino teneramente)
7 Fantasies, Op. 116: VII. Capriccio in D Minor (Allegro agitato)
Piano Concerto No. 1 in C Minor, Op. 35: I. Allegretto
Piano Concerto No. 1 in C Minor, Op. 35: II. Lento
Piano Concerto No. 1 in C Minor, Op. 35: III. Moderato
Piano Concerto No. 1 in C Minor, Op. 35: IV. Allegro con brio
Piano Concerto No. 2 in F Major, Op. 102: I. Allegro
Piano Concerto No. 2 in F Major, Op. 102: II. Andante
Piano Concerto No. 2 in F Major, Op. 102: III. Allegro
Concertino for Two Pianos in A Minor, Op. 94
Ravel: Miroirs, Gaspard de la nuit, Pavane
Miroirs: III. Une barque sur l'océan, M. 43
Miroirs: IV. Alborada del gracioso, M. 43
Miroirs: V. La vallée des cloches, M. 43
Rachmaninov, Gubaidulina, Medtner, Prokofiev
Sonate No. 2 en Si Bémol Mineur, Op. 36: I. Allegro Agitato
Sonate No. 2 en Si Bémol Mineur, Op. 36: II. Non allegro
Sonate No. 2 en Si Bémol Mineur, Op. 36: III. Allegro molto
Sonata Reminiscenza en la Mineur, Op. 38, No. 1
Sonate No. 7 en Si Bémol Majeur, Op. 83: I. Allegro inquieto
Sonate No. 7 en Si Bémol Majeur, Op. 83: II. Andante caloroso
Sonate No. 7 en Si Bémol Majeur, Op. 83: III. Precipitato