1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x767ade9cafa6bba586f9dce55a74320db37bea7a18942ad43d33b4dcaa55bdae. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7983dcb4-2aee-4451-b2bd-8bdb18f503c4.json and https://artists.proofprofile.net/proofs/artist/7983dcb4-2aee-4451-b2bd-8bdb18f503c4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Vivaldi / Purcell / Geminiani: Concertos
Barber, S.: Capricorn Concerto / Serenade, Op. 1 / Foote, A.: Air and Gavotte / Suite in E Major
Vivaldi: Violin Concertos Op. 8, Nos. 5-8 and 10-12
101 Classics - The Best Loved Classical Melodies
An der schonen, blauen Donau (The Beautiful Blue Danube), Op. 314
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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x99f9192770574915c7491472dc2c7fd5524f6dafed5677d6c674d89993509b4a. 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/HKI199245311.
Piano Concerto No. 1 in B-Flat Minor, Op. 23: I. Allegro non troppo e molto maestoso (Opening)
Polish National Radio Symphony Orchestra
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Emperor Waltz, Op. 437: Kaiser Walzer (Emperor Waltz), Op. 437
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The Danube Waves: Valurile Dunarii (The Danube Waves)
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Serenade for Strings in C Major, Op. 48: II. Walzer
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Les Patineurs, Op. 183, "The Skater's Waltz"
Slovak State Philharmonic Orchestra, Kosice
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The Nutcracker Suite, Op. 71a: VIII. Waltz of the Flowers
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Midnight Lounge - Chill Out Classics and Meditation
Trumpet Sonata in D Major, Z. 850: II. Adagio
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Grieg, E.: From Holberg's Time / Sibelius, J.: Karelia Suite / Finlandia / Valse Triste / Suite Champetre
Classic Moods - Albinoni, T.G. / Handel, G.F. / Marcello, A. / Vivaldi, A. / Bach, J.S. / Mozart, W.A. / Beethoven, L. Van / Haydn, F.J.
The 4 Seasons: Violin Concerto in F Major, Op. 8, No. 3, RV 293, "L'autunno" (Autumn): II. Adagio molto
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Christmas Festive Concert - Bach, J.S. / Handel, G.F. / Praetorius, M. / Manfredini, F.O. / Mendelssohn, Felix / Gabrieli, G.
Mozart Era (Meister Der Mozart-Zeit) - Kraus, J.M. / Naumann, J.G. / Salieri, A. / Rosetti, A. / Dittersdorf, C.D. Von / Gluck, C.W.
Chamber Music (Romantic 19Th Century) - Schubert, F. / Weber, C.M. Von / Spohr, L. / Brahms, J. / Grieg, E. / Schumann, R. / Boccherini, L.
String Quintet in E Major, Op. 11, No. 5, G. 275: III. Minuetto
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Vaughan Williams, R.: 10 Blake Songs / Oboe Concerto in A Minor / Household Music / Fantasia On A Theme by Thomas Tallis
Oboe Concerto in A Minor: I. Rondo Pastorale: Allegro moderato
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Classic Moods - Humperdinck, E. / Faure, G. / Brahms, J. / Schumann, R. / Puccini, G. / Grieg, E. / Schubert, F. / Puccini, G. / Rheinberger, J.G.
Waldscenen, Op. 82: Waldszenen, Op. 82: No. 3. Einsame Blumen (Solitary Flowers)
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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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Classic Moods - Boccherini, L. / Handel, G.F. / Mendelssohn, Felix / Haydn, F.J. / Fibich, Z. / Tchaikovsky, P.I. / Grieg, E. / Dvorak, A.
Lieder ohne Worte (Song without Words), Book 5, Op. 62: No. 30 in A Major, Op. 62, No. 6, "Fruhlingslied" (arr. for violin, cello and strings)
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Moods, Impressions and Reminscences, Op. 41, Book 4: No. 14. Poeme (arr. for violin, cello and strings)
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12 Morceaux, Op. 40: No. 2. Chanson triste (arr. for cello and strings)
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Classic Moods - Bach, J.S. / Gounod, C.-F. / Beethoven, L. Van / Schubert, F. / Wieniawski, H. / Dvorak, A. / Bruch, M. / Grieg, E.
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Moment Musical in F Minor, Op. 94, No. 3, D. 780 (arr. for chamber ensemble)
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The Four Seasons - A Symphony for Strings
Beethoven: Adagio in E-Flat Major / Andante and Variations / 6 National Airs With Variations
Rodrigo, J.: Concierto De Aranjuez (Tokos, Budapest Strings, Banfalvi) / Guitar Music (Spanish) - Sor, F. / Granados, E. / Albeniz, I. / Falla, M. De
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La vida breve, Act II: Danse espagnole No. 1
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Concierto de Aranjuez: I. Allegro con spirito
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Trumpet Recital: Friedrich, Reinhold - Stradella, A. / Corelli, A. / Marcello, A. / Torelli, G. / Albinoni, T.G.
The Four Seasons, Concerto in E Major, Op. 8 No. 1, RV 269 "Spring": I. Allegro
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The Four Seasons, Concerto in E Major, Op. 8 No. 1, RV 269 "Spring": II. Largo e pianissimo sempre
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The Four Seasons, Concerto in E Major, Op. 8 No. 1, RV 269 "Spring": III. Danza pastorale: Allegro
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The Four Seasons, Concerto in G Minor, Op. 8 No. 2, RV 315 "Summer": I. Allegro non moto
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The Four Seasons, Concerto in G Minor, Op. 8 No. 2, RV 315 "Summer": III. Presto
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The Four Seasons, Concerto in F Major, Op. 8 No. 3, RV 293 "Autumn": I. Allegro
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The Four Seasons, Concerto in F Minor, Op. 8 No. 4, RV 297 "Winter": I. Allegro non molto
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The Four Seasons, Concerto in F Minor, Op. 8 No. 4, RV 297 "Winter": II. Largo
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Sinfonia for Strings in G Major, RV 149: I. Allegro molto
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Sinfonia for Strings in G Major, RV 149: II. Andante
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Sinfonia for Strings in G Major, RV 149: III. Allegro
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Praeludium and Allegro in the style of Pugnani (arr. for violin and strings): Allegro
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Violin Concerto in A Minor, BWV 1041: I. Allegro
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Violin Concerto in A Minor, BWV 1041: II. Andante
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Violin Concerto in A Minor, BWV 1041: III. Allegro assai
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Vivaldi, A.: Violin Concertos, Op. 8, Nos. 5-7, 10 / Concerti Grossi, Op. 3, Nos. 8, 11
Klassik für Jedermann: Der Vier Jahreszeiten
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66 Must-Have Spanish Guitar Masterpieces
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Dittersdorf, C.D. Von: Harp Concerto in A Major / La Prise De La Bastille / Die 4 Weltalter
Classic Moods - Puccini, G. / Schubert, F. / Wagner, R. / Rubinstein, A. / Tchaikovsky, P.I.
Les contes d'Hoffmann (The Tales of Hoffman), Act II: Belle nuit, o nuit d'amour, "Barcarolle" (arr. for orchestra)
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Schwanengesang, D. 957: No. 4. Standchen (arr. for string ensemble)
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La boheme, Act I: Che gelida manina (arr. for orchestra)
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Lieder ohne Worte (Songs without Words), Book 2, Op. 30: No. 12 in F-Sharp Minor, Op. 30, No. 6, "Venezianisches Gondellied"
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Orphee et Eurydice: Orpheus and Eurydice: Dance of the Blessed Spirits
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Soirees a Saint-Petersbourg, Op. 44: No. 1. Romance in E-Flat Major (arr. for string ensemble)
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Nocturne No. 2 in E-Flat Major, Op. 9, No. 2
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Hjertets melodier (Melodies of the Heart), Op. 5: No. 3. Jeg elsker dig (I Love but Thee) (arr. for string ensemble)
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Concerto Grosso in G Minor, Op. 6, No. 8, "Christmas Concerto": V. Allegro
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String Quintet in E Major, Op. 11 No. 5, G. 275: III. Minuetto "The Celebrated Minuet"
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Symphony for Strings and Continuo in C Major, RV 112: I. Allegro
Antonio Vivaldi: The Four Seasons and Other String Favorites
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Symphony for Strings and Continuo in G Major, RV 149: I. Allegro molto
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Classical Masterpieces of the Millennium
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Classical Music for Learning: Great Masterpieces to Improve Studying and Mental Focus
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Jocelyn, Op. 100: Berceuse. "Oh! ne t'éveille pas encore" - Arr. For Orchestra
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Symphonie concertante in C Major, W. C36a: I. Andante
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Symphonie concertante in C Major, W. C36a: III. Allegro
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Sinfonia concertante in E Major, W. C44: II. Larghetto
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Notturno in E-Flat Major, W. C40: II. Minuetto
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Symphonie concertante in A Major, W. C34: II. Rondeau: Allegro assai
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Notturno in E-Flat Major, W. C40: II. Minueto II - I
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Sinfonia concertante in B-Flat Major, W. C48: III. Rondo: Allegretto
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