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 0x17a67d1ecde3b5b070921724547dae84f0fd67857a82059cd8e504a1946d7dbc. 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/ab8ccaef-229d-4432-8ed2-1352495a667a.json and https://artists.proofprofile.net/proofs/artist/ab8ccaef-229d-4432-8ed2-1352495a667a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sonata for Violin and Cello, M. 73: I. Allegro
Sonata for Violin and Cello, M. 73: II. Tres vif
Sonata for Violin and Cello, M. 73: III. Lent
Sonata for Violin and Cello, M. 73: IV. Vif, avec entrain
Sonatina for Violin and Cello, Op. 324: I. Anime
Sonatina for Violin and Cello, Op. 324: II. Modéré
Sonatina for Violin and Cello, Op. 324: III. Vif
Sonatina for Violin and Cello, H. 80: I. Allegro
Sonatina for Violin and Cello, H. 80: II. Andante
Sonatina for Violin and Cello, H. 80: III. Allegro
Duo for Violin and Cello, AK 44: I. Allegro ordinario e un poco agitato
Duo for Violin and Cello, AK 44: II. Andante molto espressivo
Duo for Violin and Cello, AK 44: III. Molto vivace
Duo for Violin and Cello, AK 44: IV. Bauern Tanz-Szenen: Allegro vivo
Violin Partita No. 2 in D Minor, BWV 1004: V. Ciaccona (excerpt)
Preludes and Fugues, Op. 117: No. 4 in G Minor, "Chaconne"
Violin Sonata in G Minor, Op. 61: I. Gemachlich
Violin Sonata in G Minor, Op. 61: II. Sehr ruhig
Violin Sonata in G Minor, Op. 61: III. Lustig - Nicht schnell
Sonata for Solo Violin, AK 69: I. Allegro furioso, quasi presto
Sonata for Solo Violin, AK 69: II. Adagietto
Sonata for Solo Violin, AK 69: III. Allegro ritmato
Sonata for Solo Violin, AK 69: IV. Adagio - Allegro molto moderato
Violin Sonata, H. 143: III. Allegretto grazioso
Duo for Violin and Cello, Op. 7: I. Allegro serioso, non troppo
Duo for Violin and Cello, Op. 7: II. Adagio
Duo for Violin and Cello, Op. 7: III. Maestoso e largamente - IV. Presto
Theme and Variations. Theme. Andante moderato
Theme and Variations. Variation 1: Allegro
Theme and Variations. Variation 2: Andante espressivo, rubato
Theme and Variations. Variation 3: Allegro commodo
Theme and Variations. Variation 4: Molto moderato espressivo
Theme and Variations. Variation 5: Allegro molto
Theme and Variations. Variation 6: Allegro vigoroso
Theme and Variations. Variation 7: Lento serioso
Theme and Variations. Variation 8: Allegro molto
Violin Sonata: III. Scherzo. Allegretto grazioso
Violin Sonata: IV. Finale. Allegro risoluto
Sonata for Solo Violin, Sz. 117, BB 124: I. Tempo di ciaccona
Sonata for Solo Violin, Sz. 117, BB 124: II. Fuga. Risoluto, non troppo vivo
Sonata for Solo Violin, Sz. 117, BB 124: III. Melodia: Adagio
Sonata for Solo Violin, Sz. 117, BB 124: IV. Presto (Original Version)
Sonata No. 2 for violin solo: I. Adagio - Allegro - II. Adagio
Sonata No. 2 for violin solo: III. Presto
Sonatina pastorale, Op. 383: II. Romance
Violin Sonata, Op. 228: I. Quarter note = 82
Violin Sonata, Op. 228: II. Quarter note = 40
Violin Sonata, Op. 228: III. Quarter note = 100
Suite No. 1 for Solo Violin: II. Andante tranquillo
Suite No. 1 for Solo Violin: III. Allegro - IV. Andante
Suite No. 1 for Solo Violin: V. Allegro energico
Suite No. 2 for Solo Violin: I. Energico deciso
Suite No. 2 for Solo Violin: II. Moderato
Suite No. 2 for Solo Violin: III. Andante
Suite No. 2 for Solo Violin: IV. Allegro molto
Violin Sonata in D Major, Op. 115: I. Moderato
Violin Sonata in D Major, Op. 115: II. Theme and Variations. Andante dolce
Violin Sonata in D Major, Op. 115: III. Con brio
Kaprys polski (Polish Capriccio): Kaprys polski No. 1 [Polish Capriccio No. 1]
Kaprys polski No. 2 (Polish Capriccio No. 2)
Suit eesti tantsuviisidest (Suite on Estonian Dance Tunes): I. Bagpipe
Suit eesti tantsuviisidest (Suite on Estonian Dance Tunes): II. At the Shepherd's Fire
Suit eesti tantsuviisidest (Suite on Estonian Dance Tunes): III. Slow Waltz
Suit eesti tantsuviisidest (Suite on Estonian Dance Tunes): IV. Horn Tune
Suit eesti tantsuviisidest (Suite on Estonian Dance Tunes): V. Dance of the Serf
Sonata for Solo Violin No. 1: I. Allegro
Sonata for Solo Violin No. 1: II. Adagio
Sonata for Solo Violin No. 1: IV. Variazioni
Violin Sonata: III. Scherzo: Allegretto grazioso
Violin Sonata: IV. Finale: Allegro risoluto
Violin Sonata, BB 124: I. Tempo di ciaccona
Violin Sonata, BB 124: II. Fuga: Risoluto, non troppo vivo
Violin Sonata, BB 124: III. Melodia: Adagio
Violin Sonata, BB 124: IV. Presto (original version)
Violin Sonata, Op. 228: I. quarter note = 82
Violin Sonata, Op. 228: II. quarter note = 40
Violin Sonata, Op. 228: III. quarter note = 100
Sonata for Violin and Cello: II. Tres vif
Sonata for Violin and Cello: IV. Vif, avec entrain
Sonatina for Violin and Cello, Op. 324: II. Modere
Violin Sonata in D Major, Op. 115: II. Theme and Variations: Andante dolce
Kaprys polski No. 1 (Polish Capriccio No. 1)
Theme and Variations: Theme: Andante moderato
Theme and Variations: Variation 1: Allegro
Theme and Variations: Variation 2: Andante espressivo, rubato
Theme and Variations: Variation 3: Allegro commodo
Theme and Variations: Variation 4: Molto moderato espressivo
Theme and Variations: Variation 5: Allegro molto
Theme and Variations: Variation 6: Allegro vigoroso
Theme and Variations: Variation 7: Lento serioso
Theme and Variations: Variation 8: Allegro molto
Violin Sonata No. 1: I. Modere sans lenteur
Violin Sonata No. 1: IV. Final. Tres vite
Violin Sonata No. 2: I. Allegro non troppo
Violin Sonata No. 2: III. Final. Allegro
Violin Sonata No. 1: I. Toccata: Sehr lebhafte achtel
Violin Sonata No. 1: II. Ruhige viertel, sehr fließend
Violin Sonata No. 1: III. Verrückt schnell, unschön spielen!!
Violin Sonata No. 1: IV. Breit!! Mit viel Ausdruck
Violin Sonata No. 1: V. Fuge (Toccata): Heiter, burschikos
Suite No. 1 for Solo Violin: I. Canon: Lebhaft
Suite No. 1 for Solo Violin: II. Fuge: Munter!
Suite No. 1 for Solo Violin: III. Rondo: Nicht zu schnell
Suite No. 1 for Solo Violin: IV. Dreiteilige liedform: Breit