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 0x9b9d67c35d7138e55b3c0dd8276ccd4569c3b5b1428126656d300e775e8b46c8. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d6ba1d38-0917-4810-9785-7d24fcc7ce8a.json and https://artists.proofprofile.net/proofs/artist/d6ba1d38-0917-4810-9785-7d24fcc7ce8a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Piano Sonata No. 16 in C Major, K. 545 "Sonata facile": I. Allegro
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
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Serenade No. 10 in B-Flat Major, K. 361 "Gran Partita": III. Adagio
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Symphony No. 29 in A Major, K. 201: II. Andante
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Suite No. 3 in D Major for Orchestra, BWV 1068: II. Air
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The Menuetto Lounge - 111 Relaxing Masterpieces
The four seasons, Winter, Op. 8/4: II. Largo
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111 Classical Masterpieces from the Movies
66 Classical Masterpieces from the Movies
Serenade for Strings in E Major, Op. 22: IV. Larghetto
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Water Music, Suite from HWV 348-350: VI. Alla Hornpipe
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Symphony No. 40 in G Minor, K. 550: I. Molto allegro
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Adagio in G Minor (Arr. by Remo Giazotto)
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The Beautiful Blue Danube, Waltz, Op. 314
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Piano Concerto No. 21 in C Major, K. 467 "Elvira Madigan": II. Andante
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Piano Concerto No. 26 in D Major, K. 537 "Coronation": II. Larghetto
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The 99 Most Essential Mozart Masterpieces
Le Nozze di Figaro (The Marriage of Figaro), K. 492: Overture
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Healing Classics - Classical for the Soul
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Clarinet Concerto in A Major, K.622: II. Adagio
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The Masterpieces - Mozart: Clarinet Concerto in A Major, K.622
Mozart, Schubert, Ravel and Janácek: Chamber Music Selections
Quintet in A Major for Clarinet and Strings, K. 581: I. Allegro
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Quintet in A Major for Clarinet and Strings, K. 581: II. Larghetto
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Quintet in A Major for Clarinet and Strings, K. 581: III. Menuetto - Trio 1 - Trio 2
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String Quintet in C Major, D. 956: I. Allegro ma non troppo
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Quartet in F Major for Oboe, Violin, Viola and Cello, K. 370: I. Allegro
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Quartet in F Major for Oboe, Violin, Viola and Cello, K. 370: II. Adagio
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Quartet in F Major for Oboe, Violin, Viola and Cello, K. 370: III. Rondeau: Allegro
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String Quartet No. 1, JW 7/8, "Kreutzer Sonata": III. Con moto - Vivo - Andante
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String Quartet No. 1, JW 7/8, "Kreutzer Sonata": IV. Con moto - Adagio
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Quintet in E-Flat Major for Horn, Violin, Two Violas and Cello, K. 407: I. Allegro moderato
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The 50 Most Essential Mozart Masterpieces
Concerto No. 26 in D Major for Piano and Orchestra, K. 537, "Coronation": II. (Larghetto)
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Violin Concerto No. 3 in G Major, K. 216: II. Adagio
Württemberg Chamber Orchestra Of Heilbronn
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Piano Concerto No. 10 in E-Flat Major, K. 365: III. Rondo: Allegro
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Piano Concerto No. 20 in D Minor, K. 466: II. Romance
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Piano Concerto No. 27 in B-Flat Major, K. 595: II. Larghetto
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Clarinet Concerto in A Major, K. 622: II. Adagio
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Clarinet Quintet in A Major, K. 581: II. Larghetto
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Serenade No. 11 in E-Flat Major, K. 375: III. Adagio
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Serenade in G Major, K. 525 "Eine kleine Nachtmusik": I. Allegro
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Serenade in G Major, K. 525 "Eine kleine Nachtmusik": III. Minueto: Allegretto
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A Musical Joke in F Major, K. 522: I. Allegro
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Symphony No. 29 in A Major, K. 201: I. Allegro moderato
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Hannibal Soundtrack (Music Inspired by the TV Series)
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Brandenburg Concerto No. 4 in G Major, BWV 1049: I. Allegro
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Nocturnes No. 2 in E-Flat Major, Op. 9 No. 2
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Requiem Mass in D Minor, K. 626: VIII. Lacrimosa dies illae
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I Like Mozart! (Menuetto Kids - Classical Music for Children)
Schubert: Rosamunde & Lieder (Cologne Collection)
Schubert: Rosamunde, Op. 26, D. 797: Overture from Die Zauberharfe, D. 644
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Wolfgang Amadeus Mozart: Essential Concertos
Dittersdorf, Ravel & Others: Works for Harp