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 0xf81a1d3736e1ec51d730cbdb1435fee25b1326d2fb97070afda86e458e4ed12b. Chain 2 (Bitcoin): anchored in block 953947 (2026-06-16T13:14:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/234e2c26-28b2-4bb3-8f09-cfdcfce4123b.json and https://artists.proofprofile.net/proofs/artist/234e2c26-28b2-4bb3-8f09-cfdcfce4123b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sonata for Violin Solo in A Minor, JunP IV.2: I. Largo
Sonata for Violin Solo in A Minor, JunP IV.2: II. Allegro
Sonata for Violin Solo in A Minor, JunP IV.2: III. Giga - Variationen
Sonata for Violin Solo: I. Adagio Con Fantasia
Sonata for Violin Solo: IV. Giga (Allegro)
2 Divertimenti for Solo Violin: I. Allegro Moderato
2 Divertimenti for Solo Violin: II. Menuet & Trio
Sonata for Violin, Op. 31 No. 2: Leicht Bewegte Viertel
Sonata for Violin, Op. 31 No. 2: Ruhig Bewegte Achtel
Sonata for Violin, Op. 31 No. 2: Gemaechliche Achtel
Sonata for Violin, Op. 31 No. 2: Var. Ueber "Komm, Lieber Mai"
Sonata for Violin, Op. 121: II. Andante Dolce
Sonata for Violin, Op. 121: III. Con Brio
Violin Sonata in D Major, P.IX:2: I. Adagio
Violin Sonata in D Major, P.IX:2: II. Allegro
Violin Sonata in D Major, P.IX:2: III. Allegretto grazioso
Violin Sonata in E Minor, Op.2 No.8: I. Largo e staccato
Violin Sonata in E Minor, Op.2 No.8: II. Allegro con fuoco
Violin Sonata in E Minor, Op.2 No.8: III. Minuetto e gavotta
Violin Sonata in E Minor, Op.2 No.8: IV. Giga
Violin Sonata in G Minor, D.37.6: I. Largo
Violin Sonata in G Minor, D.37.6: II. Allegro
Violin Sonata in G Minor, D.37.6: III. Adagio
Violin Sonata in G Minor, D.37.6: IV. Allegro
Violin Sonata in B-Flat Major, Op.5 No.2: I. Grave
Violin Sonata in B-Flat Major, Op.5 No.2: II. Allegro
Violin Sonata in B-Flat Major, Op.5 No.2: III. Vivace
Violin Sonata in B-Flat Major, Op.5 No.2: IV. Adagio - Vivace
Four Hundred Years of the Violin - An Anthology of the Art of Violin Playing, Vol. 3
Violin Sonata In G Major, BWV 1021: I. Adagio
Violin Sonata In G Major, BWV 1021: II. Vivace
Violin Sonata In G Major, BWV 1021: III. Largo
Violin Sonata In G Major, BWV 1021: IV. Presto
Violin Sonata In E Minor, BWV 1023: I. No indication / II. Adagio ma non tanto
Violin Sonata In E Minor, BWV 1023: III. Allemande
Violin Sonata In E Minor, BWV 1023: IV. Gigue
Violin Sonata in F Minor, BWV 1018: I. Largo / II. Allegro
Violin Sonata in F Minor, BWV 1018: III. Adagio / IV. Presto
Violin Sonata in G minor, H.542.5: I. Allegro
Violin Sonata in G minor, H.542.5: II. Adagio
Violin Sonata in G minor, H.542.5: III. Allegro
Sonata for Violin Solo in a Minor, JunP IV.2: I. No indication
Sonata for Violin Solo in a Minor, JunP IV.2: II. Allegro
Sonata for Violin Solo in a Minor, JunP IV.2: III. Giga
Sonata for Violin Solo in B-Flat Major: I. Adagio
Sonata for Violin Solo in B-Flat Major: II. Vivace
Sonata for Violin Solo in B-Flat Major: III. Affetuoso
Sonata for Violin Solo in B-Flat Major: IV. Giga
Divertimento In Two Parts for Solo Violin, No. 1
Divertimento In Two Parts for Solo Violin, No. 2
Sonata for Violin Solo, Op. 31, No. 2: I. Leicht bewegte Viertel
Sonata for Violin Solo, Op. 31, No. 2: II. Ruhig bewegte Achtel
Sonata for Violin Solo, Op. 31, No. 2: III. Gemächliche Viertel
Sonata for Violin Solo, Op. 31, No. 2: IV. Fünf Variationen über das Lied "Komm, lieber Mai"
Sonata for Solo Violin in D Major, Op. 115: I. Moderato
Sonata for Solo Violin in D Major, Op. 115: II. Andante dolce - Tema con variazioni
Sonata for Solo Violin in D Major, Op. 115: III. Con brio - Allegro precipitato
400 Years Of The Violin: An Anthology Of The Art Of Violin Playing
Violin Sonata in D Major, HWV 371: III. Larghetto
Serenade for Orchestra in D Major, K. 250: IV. Rondo - Allegro
Scherzo in C Minor frin tge F-A-E Sonata
Five Melodies for Violin and Piano, Op 35bis: III. Animato, ma non allegro
42 etudes ou caprices for Solo Violin, No. 2 in C Major
Every Violinist's Guide - 18 Traditional Etudes (First Recording): Op. 73/16
Every Violinist's Guide - 18 Traditional Etudes (First Recording): Op. 73/9
Every Violinist's Guide - 18 Traditional Etudes (First Recording): No. 2 Pt. 2
Every Violinist's Guide - 18 Traditional Etudes (First Recording): No. 21
Every Violinist's Guide - 18 Traditional Etudes (First Recording): No. 17
Every Violinist's Guide - 18 Traditional Etudes (First Recording): No. 8
Every Violinist's Guide: 18 Traditional Etudes (First Recording): No. 14
Every Violinist's Guide - 18 Traditional Etudes (First Recording): No. 4
Every Violinist's Guide - 18 Traditional Etudes: (First Recording): No. 3
Every Violinist's Guide - 18 Traditional Etudes (First Recording): No. 28
Every Violinist's Guide - 18 Traditional Etudes (First Recording): No. 8 Pt. 2
Every Violinist's Guide - 18 Traditional Etudes (First Recording) : No. 2
Every Violinist's Guide - 18 Traditional Etudes (First Recording): No. 15
Every Violinist's Guide - 18 Traditional Etudes (FirstRecording): No.8
Every Violinist's Guide - 18 Traditional Etudes (First Recording): Op. 10/5
Every Violinist's Guide - 18 Traditional Etudes (First Recording): Op. 10/1
Every Violinist's Guide - 18 Traditional Etudes (First Recording): Op. 10/7
All Wieniawski Program - The Complete Etude-Caprices for 2 Violins (World Premiere Recording): Op. 18 - No. 1
All Wieniawski Program - The Complete Etude-Caprices for 2 Violins (World Premiere Recording): Op. 18 - No. 2
All Wieniawski Program - The Complete Etude-Caprices for 2 Violins (World Premiere Recording): Op. 18 - No. 3
All Wieniawski Program - The Complete Etude-Caprices for 2 Violins (World Premiere Recording): Op. 18 - No. 4
All Wieniawski Program - The Complete Etude-Caprices for 2 Violins (World Premiere Recording): Op. 18 - No. 5
All Wieniawski Program - The Complete Etude-Caprices for 2 Violins (World Premiere Recording): Op. 18 - No. 6
All Wieniawski Program - The Complete Etude-Caprices for 2 Violins (World Premiere Recording): Op. 18 - No. 7
All Wieniawski Program - The Complete Etude-Caprices for 2 Violins (World Premiere Recording): Op. 18 - No. 8
All Wieniawski Program: Polonaise In D, Op. 4
Italian Baroque Sonatas - Sonata In D Major: Adagio
Italian Baroque Sonatas - Sonata In D Major: Allegro Con Fuoco
Italian Baroque Sonatas - Sonata In D Major: Allegretto Grazioso
Italian Baroque Sonatas - Sonata In E Minor: Largo E Staccato
Italian Baroque Sonatas - Sonata In E Minor: Allegro Con Fuoco
Italian Baroque Sonatas - Sonata In E Minor: Minuetto & Gavotta
Italian Baroque Sonatas - Sonata In E Minor: Giga
Italian Baroque Sonatas - Sonata In G Minor: Largo
Italian Baroque Sonatas - Sonata In G Minor: Allegro
Italian Baroque Sonatas - Sonata In G Minor: Adagio
Italian Baroque Sonatas - Sonata In G Minor: Allegro Pt. 2
Italian Baroque Sonatas - Sonata In Bb Major, Op 5/2: Grave
Italian Baroque Sonatas - Sonata In Bb Major, Op 5/2: Allegro
Italian Baroque Sonatas - Sonata In Bb Major, Op 5/2: Vivace
Italian Baroque Sonatas - Sonata In Bb Major, Op 5/2: Adagio - Vivace
J.S. Bach 4 Sonatas - Sonata In G For Violin & Continuo, BWV 1021: Adagio
J.S. Bach 4 Sonatas - Sonata In G For Violin & Continuo, BWV 1021: Vivace
J.S. Bach 4 Sonatas - Sonata In G For Violin & Continuo, BWV 1021: Largo
J.S. Bach 4 Sonatas - Sonata In G For Violin & Continuo, BWV 1021: Presto
J.S. Bach 4 Sonatas - Sonata In E Minor For Violin & Continuo, BWV 1023: Allegro-Adagio
J.S. Bach 4 Sonatas - Sonata In E Minor For Violin & Continuo, BWV 1023: Allemande
J.S. Bach 4 Sonatas - Sonata In E Minor For Violin & Continuo, BWV 1023: Gigue
J.S. Bach 4 Sonatas - Sonata In F For Harpsichard & Violin: Largo-Allegro
J.S. Bach 4 Sonatas - Sonata In F For Harpsichard & Violin: Adagio-Presto
J.S. Bach 4 Sonatas - Sonata In G For Harpsichard & Violin: Allegro
J.S. Bach 4 Sonatas - Sonata In G For Harpsichard & Violin: Adagio
J.S. Bach 4 Sonatas - Sonata In G For Harpsichard & Violin: Allegro Pt. 2
Solo Sonatas - Sonata For Violin Solo: Largo
Solo Sonatas - Sonata For Violin Solo: Allegro
Solo Sonatas - Sonata For Violin Solo: Gigo-Variations (3&4)
Solo Sonatas - Sonata For Violin Solo: Adagio (Con Fantasia)
Solo Sonatas - Sonata For Violin Solo: Vivace
Solo Sonatas - Sonata For Violin Solo: Gigo (Allegro)
Solo Sonatas - Sonata For Violin Solo: Affetuoso
Solo Sonatas - Divertimento In 2 Parts For 1 Violin: Allegro Moderato
Solo Sonatas - Divertimento In 2 Parts For 1 Violin: Menuet & Trio
Solo Sonatas - Sonata For Violin, Op. 31, No. 2: Leight Bewegte Viertel
Solo Sonatas - Sonata For Violin, Op. 31, No. 2: Ruhig Bewegte Achtel
Solo Sonatas - Sonata For Violin, Op. 31, No. 2: Gemaechlighte Achtel
Solo Sonatas - Sonata For Violin, Op. 31, No. 2: Var. Ueber "Komm Lieber Mai"
Solo Sonatas - Sonata For Violin, Op. 121: Moderato
Solo Sonatas - Sonata For Violin, Op. 121: Andante Dolce
Solo Sonatas - Sonata For Violin, Op. 121: Con Brio
Four Hundred Years of the Violin - An Anthology of the Art of Violin Playing, Vol. 2
Etudes-Caprices for 2 Violins, Op. 18, No. 1
Etudes-Caprices for 2 Violins, Op. 18, No. 2
Etudes-Caprices for 2 Violins, Op. 18, No. 3
Etudes-Caprices for 2 Violins, Op. 18, No. 4
Etudes-Caprices for 2 Violins, Op. 18, No. 5
Etudes-Caprices for 2 Violins, Op. 18, No. 6
Etudes-Caprices for 2 Violins, Op. 18, No. 7
Etudes-Caprices for 2 Violins, Op. 18, No. 8
Polonaise Brillante in D Major, Op. 4, No. 1
2 Mazurkas, Op. 19: II. Le ménétrier (Dudziarz)
Sonata for Violin in D Major, P.IX.2: I. Adagio
Sonata for Violin in D Major, P.IX.2: II. Allegro
Sonata for Violin in D Major, P.IX.2: III. Allegro
Sonata for Violin and Harpsichord in E Minor, Op. 2, No. 8: I. Largo e staccato
Sonata for Violin and Harpsichord in E Minor, Op. 2, No. 8: II. Allegro con fuoco
Sonata for Violin and Harpsichord in E Minor, Op. 2, No. 8: III. Minuetto & Gavotta
Sonata for Violin and Harpsichord in E Minor, Op. 2, No. 8: IV. Giga
Sonata da camera in G Minor, Op. 2, No. 6: I. Largo
Sonata da camera in G Minor, Op. 2, No. 6: II. Allegro
Sonata da camera in G Minor, Op. 2, No. 6: III. Adagio
Sonata da camera in G Minor, Op. 2, No. 6: IV. Allegro
Violin Sonata in B-Flat Major, Op. 5, No. 2: I. Grave
Violin Sonata in B-Flat Major, Op. 5, No. 2: II. Allegro
Violin Sonata in B-Flat Major, Op. 5, No. 2: III. Vivace
Violin Sonata in B-Flat Major, Op. 5, No. 2: IV. Adagio - Vivace
Four Hundred Years of the Violin - An Anthology of the Art of Violin Playing, Vol. 1
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 0x6bcb6c574746845c2f92f29eaadbb5376c59b129dc27653633be08e5bf6beafb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM6N21779391.
Serenade for Orchestra in D Major, K. 250: IV. Rondeau: Allegro
Scherzo in C Minor from the F-A-E Sonata
Five Melodies for Violin and Piano, Op. 35bis: III. Animato, ma non allegro
42 études ou caprices for Solo Violin, No. 2 in C Major
20 Études brillantes et caractéristiques, Op. 73, No. 16
20 Études brillantes et caractéristiques, Op. 73, No. 9
36 Etudes or Caprices for Violin, No. 14
36 Etudes or Caprices for Violin, No. 28
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8634ee3efaac7fd3084e27e7b325fbf2d4525fe5d279b4930a9ffa51932434de. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM6N21779411.
24 Etudes or Caprices for Violin, Op. 35, No. 2
42 études ou caprices for Solo Violin, No. 15 in B-Flat Major
42 études ou caprices for Solo Violin, No. 8 in E Major
Violin Sonata in D major, HWV 371: III. Larghetto
Introduction & Rondo Capriccioso, Op. 28
Sonata No. 3 In D Major: I. Adagio Molto Maestoso
Sonata No. 3 In D Major: III. Sarabanda-Largo
Sonata No. 3 In D Major: IV. Tambourin-Allegro Vivace
Sonata No. 1 In G Major, H. XV/32: I. Andante
Sonata No. 1 In G Major, H. XV/32: II. Allegro