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 0xf43e1c13fbefd7b2682cba53510907b761928a18aaf8a17f7ec3fd61ec814112. 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/fdbfda89-c1f8-41a8-920c-d9f48d56e37a.json and https://artists.proofprofile.net/proofs/artist/fdbfda89-c1f8-41a8-920c-d9f48d56e37a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Harmonious Families, Vol. 1 - Danish Compositions by Fathers and Sons
Haermaendene paa Helgeland (Soldiers on Helgeland), Op. 25
Hakon Jarl, Op. 40: Hakon Jarl, Op. 40: Overture
En efteraarsjagt, Op. 63b: En efteraarsjagt (An Autumn Hunt), Op. 63b
Cello Concerto in D Minor, Op. 26: I. Allegro moderato - Andantino - Allegro - Andantino - Allegro
Cello Concerto in D Minor, Op. 26: II. Canzonetta: Andante
Cello Concerto in D Minor, Op. 26: III. Rondo pastorale: Allegretto - Andantino
Felix Mendelssohn, Violin Concerto In E Minor, Op. 64
Violin Concerto in E minor, Op. 64 - Allegro molto appassionato
Violin Concerto in E minor, Op. 64 - Andante
Violin Concerto in E minor, Op. 64 - Allegro non troppo - Allegro molto vivace
Violin Concerto No. 1 in G minor, Op. 26 - Allegro Moderato
Violin Concerto No. 1 in G minor, Op. 26 - Adagio
Violin Concerto No. 1 in G minor, Op. 26 - Finale: Allegro energico
Quintette pour piano et cordes in F Minor: I, Molto moderato quasi lento
Quintette pour piano et cordes in F Minor: II, Lento, con molto sentimento
Quintette pour piano et cordes in F Minor: III, Allegro non troppo, ma con fuoco
Quintette pour piano et cordes in C Minor, Op. 42: I, Poco lento
Quintette pour piano et cordes in C Minor, Op. 42: II, Larghetto sostenuto
Quintette pour piano et cordes in C Minor, Op. 42: III, Maestoso
Quintette pour piano et cordes, Op. 7: I, Allegro
Quintette pour piano et cordes, Op. 7: II, Andante
Quintette pour piano et cordes, Op. 7: III, Molto vivace
Quintette pour piano et cordes, Op. 7: IV, Allegro con moto
Quintette pour piano et cordes, Op. 68: I, Moderato
Quintette pour piano et cordes, Op. 68: II, Andante
Quintette pour piano et cordes, Op. 68: III, Allegro con fuoco
Quintette pour piano et cordes, Op. 68: IV, Moderato
Quintette pour piano et cordes, Op. 14: I, Allegro moderato e maestoso
Quintette pour piano et cordes, Op. 14: II, Andante sostenuto
Quintette pour piano et cordes, Op. 14: III, Presto
Quintette pour piano et cordes, Op. 14: IV, Allegro assaï, ma tranquillo
Violin Concerto No. 1 in D Major, Op. 19: 1. Andantino
Violin Concerto in E Minor, Op. 64, MWV O 14: 1. Allegro molto appassionato
Violin Concerto No. 1 in A Minor, BWV 1041: 1. Allegro moderato
Violin Concerto in C Major, Hob. VII A No.1: 1. Allegro moderato
Violin Concerto No. 1 in G Minor, Op. 26: 1. Vorspiel (Allegro moderato)
Violin Concerto in E-Flat Minor "Il Ritiro", RV 256: I. Allegro
12 Violin Concertos, Op. 4 - "La stravaganza" / Concerto No. 1 in B-Flat Major, RV 383a: 1. Allegro
Violin Concerto in G Minor, Op. 10 No. 6: 1. Allegro ma poco
Concerto russe, Op. 29: 1. Prélude - Allegro
L'Histoire du soldat / Part 1: 1. Marche du soldat – Airs de marche
Concert pour piano, violon et quatuor à cordes en ré majeur, Op. 21: 1. Décidé - Animé
Concerto For Violin And Percussion: Prague
Concert pour piano, violon et quatuor à cordes en ré majeur, Op. 21: 2. Sicilienne
Concerto For Violin And Percussion: L'Homme Nu
Violin Concerto in B-Flat Major "La stravaganza", RV 383a: II. Largo e Cantabile
Violin Concerto in E Minor, Op. 64, MWV O 14: 2. Andante
Violin Concerto No. 1 in G Minor, Op. 26: 2. Adagio
Violin Concerto in C Major, Hob. VII A No.1: 2. Adagio
Violin Concerto in E-Flat Minor, "Il Ritiro", RV256: 2. Andante
Violin Concerto No. 1 in A Minor, BWV 1041: 2. Andante
Violin Concerto No. 1 in D Major, Op. 19: 2. Scherzo - Vivacissimo
Violin Concerto in G Minor, Op. 10 No. 6: 2. Aria grazioso – Andante
L'Histoire du soldat / Part 1: 2. Musique de la 1ère scène – Airs au bord du ruisseau
Concerto russe, Op. 29: 3. Intermezzo: Allegretto non troppo
Violin Concerto No. 1 in A Minor, BWV 1041: 3. Allegro assai
Violin Concerto in E-Flat Minor, "Il Ritiro", RV256: 3. Presto
12 Violin Concertos, Op. 4 - "La stravaganza" / Concerto No. 1 in B-Flat Major, RV 383a: 3. Allegro
Concerto For Violin And Percussion: Buenos Aires, Tango
L'Histoire du soldat / Part 1: 3. Reprise de la marche du soldat – Airs de marche
Violin Concerto No. 1 in D Major, Op. 19: 3. Moderato
Violin Concerto in G Minor, Op. 10 No. 6: 3. Allegro
Concert pour piano, violon et quatuor à cordes en ré majeur, Op. 21: 3. Grave
Violin Concerto in C Major, Hob. VII A No.1: 3. Finale (Presto)
Violin Concerto No. 1 in G Minor, Op. 26: 3. Finale (Allegro energico)
Violin Concerto in E Minor, Op. 64, MWV O 14: 3. Allegro non troppo - Allegro molto vivace
Violin Concerto in A Minor, RV Anh. 15: 1. Allegro
12 Violin Concertos, Op. 4 - "La stravaganza" / Concerto No. 3 in G Major, RV 301: 1. Allegro
Violin Concerto No. 2 in E Major, BWV 1042: 1. Allegro
Violin Concerto in D Major, Op. 35, TH 59: 1. Allegro moderato
Concerto For Violin And Percussion: Tokyo
Concert pour piano, violon et quatuor à cordes en ré majeur, Op. 21: 4. Finale (très animé)
L'Histoire du soldat / Part 1: 4. Musique de la 2ème scène
Violin Concerto No. 2 in G Minor, Op. 63: 1. Allegro moderato
Violin Concerto No. 5 in A Major, K. 219 "Turkish": 1. Allegro aperto
Concerto russe, Op. 29: 4. Introduction - Vivace
Sonata No. 1 for Violin and Piano in A Minor, Op. 105: 1. Mit leidenschaftlichem Ausdruck
Violin Concerto in B-Flat Major, Op. 10 No. 1: 1. Allegro
Concerto No. 1 for Violin in F major, Op. 20: 1. Andante - Allegro
L'Histoire du soldat / Part 1: 5. Musique de la 3ème scène (Forme variée des airs au bord du ruisseau)
Violin Concerto No. 2 in G Minor, Op. 63: 2. Andante assai
Violin Concerto No. 2 in E Major, BWV 1042: 2. Adagio e sempre piano
Violin Concerto in B-Flat Major, Op. 10 No. 1: 2. Andante
Violin Concerto in A Minor, RV Anh. 15: 2. Largo
Sonata in G Major for Violin & Piano, M.77: 1. Allegretto
Violin Concerto in D Major, Op. 35, TH 59: 2. Canzonetta. Andante
Violin Concerto No. 5 in A Major, K. 219 "Turkish": 2. Adagio
Souvenance, concerto pour violon et orchestre (En mémoire de Jacques Brel): 1. Criance
Sonata No. 1 for Violin and Piano in A Minor, Op. 105: 2. Allegretto
12 Violin Concertos, Op. 4 - "La stravaganza" / Concerto No. 3 in G Major, RV 301: 2. Largo
Souvenance, concerto pour violon et orchestre (En mémoire de Jacques Brel): 2. Aimance
Concerto No. 1 for Violin in F major, Op. 20: 2. Andantino
Violin Concerto No. 2 in E Major, BWV 1042: 3. Allegro assai
12 Violin Concertos, Op. 4 - "La stravaganza" / Concerto No. 3 in G Major, RV 301: 3. Allegro assai
Violin Concerto No. 5 in A Major, K. 219 "Turkish": III. Rondeau. Tempo di Menuetto
Violin Concerto in A Minor, RV Anh. 15: 3. Allegro
Violin Concerto No. 2 in G Minor, Op. 63: 3. Allegro, ben marcato
L'Histoire du soldat / Part 2: 6. Marche du soldat (Forme variée des airs de marche)
Sonata No. 1 for Violin and Piano in A Minor, Op. 105: 3. Lebhaft
Violin Concerto in D Major, Op. 35, TH 59: 3. Finale. Allegro vivacissimo
Sonata in G Major for Violin & Piano, M.77: 2. Blues (Moderato)
Violin Concerto in B-Flat Major, Op. 10 No. 1: 3. Giga – Allegro ma non troppo
Violin Concerto in E Major "La Primavera", RV 269: I. Allegro
Violin concerto in E Major, D.53: 1. Grandioso
12 Violin Concertos, Op. 4 - "La stravaganza" / Concerto No. 4 in A Minor, RV 357: 1. Allegro
Violin Concerto in A Major, Op. 10 No. 2: 1. Allegro ma non troppo
Adagio for Violin and Orchestra in E Major, K. 261
Sonata No. 2 for Violin and Piano in D Minor, Op. 121: 1. Ziemlich langsam - Lebhaft
Concerto No. 1 for Violin in F major, Op. 20: 3. Allegro con fuoco
Simple Symphony, Op. 4: 1. Boisterous Bourrée
Sonata in G Major for Violin & Piano, M.77: 3. Perpetuum mobile (Allegro)
L'Histoire du soldat / Part 2: 7. Marche royale
Souvenance, concerto pour violon et orchestre (En mémoire de Jacques Brel): 3. Grinçance
Violin concerto in E Major, D.53: 2. Andante
12 Violin Concertos, Op. 8 "Il cimento dell'armonia e dell' invenzione" / Concerto No. 1 in E Major for solo violin "La Primavera" - RV269: 2. Largo
Violin Concerto in A Major, Op. 10 No. 2: 2. Adagio
Romance pour violon et piano en la majeur, Op. 69
Sonata No. 2 for Violin and Piano in D Minor, Op. 121: 2. Sehr lebhaft
L'Histoire du soldat / Part 2: 8. Petit concert
Simple Symphony, Op. 4: 2. Playful Pizzicato
12 Violin Concertos, Op. 4 - "La stravaganza" / Concerto No. 4 in A Minor, RV 357: 2. Grave e sempre piano
Violin Concerto No. 2 in E Major, IGV 26: 1. Allegro assai
12 Violin Concertos, Op. 4 - "La stravaganza" / Concerto No. 4 in A Minor, RV 357: 3. Allegro
Trois Romances sans paroles, Op. 17: 1. Andante, quasi allegretto
L'Histoire du soldat / Part 2: 9. Trois danses
Sonata No. 2 for Violin and Piano in D Minor, Op. 121: 3. Leise, einfach
Simple Symphony, Op. 4: 3. Sentimental Saraband
Violin concerto in E Major, D.53: 3. Allegro grazioso
Fünf Stücke, Op.44 No.4: 2. Langsam - Schnell
Violin Concerto in A Major, Op. 10 No. 2: 3. Allegro ma non troppo
Violin Concerto No. 2 in E Major, IGV 26: 2. Adagio
Verklärte Nacht, Op. 4: 3. Schwer betont
Violin Concerto in E Major "La Primavera", RV 269: III. Allegro
Violin Concerto in D Minor, D.45: 1. Allegro
L'Histoire du soldat / Part 2: 10. Danse du diable
12 Violin Concertos, Op. 4 - "La stravaganza" / Concerto No. 8 in D minor, RV 249: 1. Allegro - Adagio - Presto - Adagio
Sonata No. 2 for Violin and Piano in D Minor, Op. 121: 4. Bewegt
12 Violin Concertos, Op. 8 "Il cimento dell'armonia e dell' invenzione" / Concerto No. 2 in G minor for solo violin, "L'Estate" - RV315: 1. Allegro non molto
Verklärte Nacht, Op. 4: 4. Sehr breit und langsam
Violin Concerto No. 2 in E Major, IGV 26: 3. Polonaise (Rondeau)
Divertimento in D Major, K. 136: I. Allegro
Simple Symphony, Op. 4: 4. Frolicsome Finale
Trois Romances sans paroles, Op. 17: 2. Allegro molto
Fünf Stücke, Op.44 No.4: 4. Sehr langsam
Divertimento in D Major, K. 136: 2. Andante
Trois Romances sans paroles, Op. 17: 3. Andante moderato
12 Violin Concertos, Op. 8 "Il cimento dell'armonia e dell' invenzione" / Concerto No. 2 in G minor for solo violin, "L'Estate" - RV315: 2. Adagio - Presto
12 Violin Concertos, Op. 4 - "La stravaganza" / Concerto No. 8 in D minor, RV 249: 2. Allegro
L'Histoire du soldat / Part 2: 11. Petit choral
Violin Concerto in D Minor, D.45: 2. Grave
Violin Concerto in D Minor, D.45: 3. Presto
L'Histoire du soldat / Part 2: 12. Couplet du diable
Romance pour violon et piano en si bémol majeur, Op. 28
Divertimento in D Major, K. 136: 3. Presto
Violin Concerto in G Minor "L'Estate", RV 315: III. Presto
12 Violin Concertos, Op. 4 - "La stravaganza" / Concerto No. 11 in D Major, RV 204: 1. Allegro
Concerto for Recorder, 2 Violins and Continuo in A Minor, RV 108: 1. Allegro
12 Violin Concertos, Op. 4 - "La stravaganza" / Concerto No. 11 in D Major, RV 204: 2. Largo
L'Histoire du soldat / Part 2: 13. Grand choral
Violin Concerto in F Major "L'Autunno", RV 293: I. Allegro
Divertimento in B-Flat Major, K. 137: 1. Andante
L'Histoire du soldat / Part 2: 14. Marche triomphale du diable
12 Violin Concertos, Op. 4 - "La stravaganza" / Concerto No. 11 in D Major, RV 204: 3. Allegro assai
Concerto for Recorder, 2 Violins and Continuo in A Minor, RV 108: 2. Largo
Divertimento in B-Flat Major, K. 137: 2. Allegro di molto
12 Violin Concertos, Op. 8 "Il cimento dell'armonia e dell' invenzione" / Concerto No. 3 in F Major for solo violin, "L'Autunno" - RV293: 2. Adagio molto
Divertimento in B-Flat Major, K. 137: 3. Allegro assai
Concerto in D Major for String Orchestra "Basle": 1. Vivace
Concerto for Recorder, 2 Violins and Continuo in A Minor, RV 108: 3. Allegro
12 Violin Concertos, Op. 4 - "La stravaganza" / Concerto No. 12 in G Major, RV 298: 1. Spirituoso e non presto
12 Violin Concertos, Op. 8 "Il cimento dell'armonia e dell' invenzione" / Concerto No. 3 in F Major for solo violin, "L'Autunno" - RV293: 3. Allegro
Violin Concerto in F Minor "L'Inverno", RV 297: I. Allegro non molto
12 Violin Concertos, Op. 4 - "La stravaganza" / Concerto No. 12 in G Major, RV 298: 2. Largo
Divertimento in F Major, K. 138: 1. (Allegro)
Concerto in D Major for String Orchestra "Basle": 2. Arioso. Andantino
Concerto for Recorder, Violin and Continuo in D Major, RV 92: I. Allegro
Violin Concerto in F Minor "L'Inverno", RV 297: II. Largo
Concerto in D Major for String Orchestra "Basle": 3. Rondo. Allegro
Divertimento in F Major, K. 138: 2. Andante
Concerto for Recorder, Violin and Continuo in D, R.92: 2. (Larghetto)
12 Violin Concertos, Op. 4 - "La stravaganza" / Concerto No. 12 in G Major, RV 298: 3. Allegro
Concerto For Flute, Violin, Harpsichord, and Strings in A Minor, BWV 1044: 1. Allegro
Divertimento in F Major, K. 138: 3. Presto
12 Violin Concertos, Op. 8 "Il cimento dell'armonia e dell' invenzione" / Concerto No. 4 in F minor for solo violin,"L'Inverno" - RV297: 3. Allegro
Concerto for Recorder, Violin and Continuo in D, R.92: 3. Allegro
Concerto For Flute, Violin, Harpsichord, And Strings In A Minor, BWV 1044: 2. Adagio ma non tanto e dolce
Concerto For Flute, Violin, Harpsichord, And Strings In A Minor, BWV 1044: 3. Tempo di allabreve
Sinfonies pour les soupers du Roi: 1er Caprice ou Caprice de Villers-Cotterêts
The Most Relaxing Vivaldi Album In The World... Ever!
Piano Concerto No. 2 in C Minor, Op. 18: II. Adagio sostenuto
Concerto for 2 Keyboards, BWV 1060: II. Adagio
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1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aee61ea32f2ce32364e8f689510b239297b37a017b62ce1eb1a7e1bd88e22ba. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4Pg3yqZohPcINk6zPwuhkG.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4Pg3yqZohPcINk6zPwuhkG.
The Perfect Introduction to Classical Music
Concerto for Piano and Orchestra No. 2 in C Minor, Op. 18: III. Allegro Scherzando (From "The Seven Year Itch")
Divertimento in D Major, K. 136/125a: 2a. Andante - Pt. 1
Divertimento in D Major, K. 136/125a: 2b. Andante - Pt. 2
Divertimento in D Major, K. 136/125a: 2c. Andante - Pt. 3
Adagio for Violin and Orchestra in E Major, K. 261 - Pt. 1
Adagio for Violin and Orchestra in E Major, K. 261 - Pt. 2
Adagio for Violin and Orchestra in E Major, K. 261 - Pt. 3
Adagio for Violin and Orchestra in E Major, K. 261 - Pt. 4
Adagio for Violin and Orchestra in E Major, K. 261 - Pt. 5
Flute Concerto in G major, QV 5:174: I. Allegro
Flute Concerto in G major, QV 5:174: II. Arioso
Flute Concerto in G major, QV 5:174: III. Allegro vivace
Concerto for Flute, Strings and Basso Continuo in C major, Op. 7 No. 3: I. Allegro
Concerto for Flute, Strings and Basso Continuo in C major, Op. 7 No. 3: II. Adagio
Concerto for Flute, Strings and Basso Continuo in C major, Op. 7 No. 3: III. Allegro assai