Alban Berg Quartett
type: MusicGroup
genre: chamber music
genre: classical
popularity: 37
followers: 17171
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  value: 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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39f7f2644d15b9ca1e07548ef9585db1712e3e2e14b5d9044030e717f6fc76b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f903a35-318e-4199-8188-bcb6a030964e.json and https://artists.proofprofile.net/proofs/artist/3f903a35-318e-4199-8188-bcb6a030964e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
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album: Scardanelli
  type: MusicAlbum
  date published: 2004-06-28
  track: Ich heiße Scardanelli!
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    duration: PT0M59S
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    by artist: Joseph Haydn
    by artist: Harald Bergmann
    by artist: Walter Schmidinger
    by artist: Peter Schneider
    in album: Scardanelli
      type: MusicAlbum
      date published: 2004-06-28
  track: Der Frühling (Wenn neu das Licht)
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    duration: PT1M13S
    duration ms: 73800
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    by artist: Johann Sebastian Bach
    by artist: Harald Bergmann
    by artist: Walter Schmidinger
    by artist: Noël Lee
    in album: Scardanelli
      type: MusicAlbum
      date published: 2004-06-28
  track: Der Name ist gefälscht
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    duration: PT1M25S
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    by artist: Harald Bergmann
    by artist: Walter Schmidinger
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      type: MusicAlbum
      date published: 2004-06-28
  track: Vorgeschichte
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    duration: PT3M59S
    duration ms: 239506
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    by artist: Franz Schubert
    by artist: Harald Bergmann
    by artist: Walter Schmidinger
    by artist: Heinrich Schiff
    by artist: Alban Berg Quartett
    in album: Scardanelli
      type: MusicAlbum
      date published: 2004-06-28
  track: An Zimmern
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    duration: PT1M33S
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    by artist: Franz Schubert
    by artist: Harald Bergmann
    by artist: Walter Schmidinger
    by artist: Noël Lee
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      type: MusicAlbum
      date published: 2004-06-28
  track: Walzer
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    by artist: Franz Schubert
    by artist: Harald Bergmann
    by artist: Walter Schmidinger
    by artist: Peter Schneider
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      type: MusicAlbum
      date published: 2004-06-28
  track: Zeugenberichte
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    by artist: Wolfgang Amadeus Mozart
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    by artist: Walter Schmidinger
    by artist: Noël Lee
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      type: MusicAlbum
      date published: 2004-06-28
  track: Das Angenehme dieser Welt
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    by artist: Franz Schubert
    by artist: Harald Bergmann
    by artist: Walter Schmidinger
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      date published: 2004-06-28
  track: Der Frühling (Der Mensch vergißt die Sorgen)
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    duration: PT1M31S
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    by artist: Wolfgang Amadeus Mozart
    by artist: Harald Bergmann
    by artist: Walter Schmidinger
    by artist: Christian Ivaldi
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      type: MusicAlbum
      date published: 2004-06-28
  track: Der Sommer (Die Sonne kehrt)
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    by artist: Noël Lee
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      type: MusicAlbum
      date published: 2004-06-28
  track: Die Aussicht (Der off´ne Tag)
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    by artist: Wolfgang Amadeus Mozart
    by artist: Harald Bergmann
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      date published: 2004-06-28
  track: Der Herbst (Die Sagen, die der Erde)
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    duration: PT1M51S
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    by artist: Wolfgang Amadeus Mozart
    by artist: Harald Bergmann
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      date published: 2004-06-28
  track: Der Winter (Wenn sich das Jahr geändert)
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    by artist: Harald Bergmann
    by artist: Walter Schmidinger
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      date published: 2004-06-28
  track: Der Winter (Wenn sich der Tag des Jahres)
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    by artist: Franz Schubert
    by artist: Harald Bergmann
    by artist: Walter Schmidinger
    by artist: Peter Schneider
    in album: Scardanelli
  track: Larghetto
  track: Lieber Bellarmin!
  track: Aber dreifach fühlt´ ich ihn
  track: Besuch Christoph Schwab
  track: Seine unheimlich langen Fingernägel
  track: In lieblicher Bläue 1
  track: In lieblicher Bläue 2
  track: In lieblicher Bläue 3
  track: Seit derer Nacht
  track: Dr. Gmelins Sektionsbericht
  track: Der Herbst (Das Glänzen der Natur)
  track: Liebste Mutter!
  track: Die Aussicht (Wenn in die Ferne)
  track: Schlussszene
  track: Lottes Todesbericht
  track: Epilog
album: Beethoven & Schubert
album: Schubert, Dvořák, Brahms & Schumann: Piano Quintets
album: Beethoven & Schubert, Vol. 2
album: Schumann, Brahms & Dvořák
album: Mozart & Haydn
album: Schubert: String Quartets Nos. 9, 10, 12, 13 "Rosamunde", 14 "Death and the Maiden" & 15, Trout Quintet & String Quintet
album: Quartet Recital 1978
album: Beethoven: Complete String Quartets
album: Janácek: String Quartets & Dvorák: Piano Quintet in A - Dumka
album: 20th Century Masterpieces
album: Alban Berg Quartet - The Teldec Recordings
album: Hommage
album: Beethoven: Streichquartette Nr. 12, Op. 127 & Nr. 16, Op. 135
album: Beethoven: The Late String Quartets
album: Beethoven: The Late String Quartets (Live at Konzerthaus, Wien, 1989)
album: Tango Sensations
album: Beethoven: String Quartets, Op. 18 (Live, 1989)
album: Haydn: String Quartets, Op. 33 No. 3 "The Bird", Op. 77 Nos. 1 & 2
album: Mendelssohn: String Quartets, Op. 12 & Op. 13
album: Bartok: String Quartets 1-6
album: Dvořák: String Quartets, Op. 51 & 105 (Live at Wiener Konzerthaus, 1999)
album: Ravel & Debussy: String Quartets & Stravinsky: 3 Pieces, Concertino & Double Canon
album: Mozart: String Quartets Nos 14-23, String Quintets Nos 3 & 4
album: Mozart: Klavierkonzert No. 12 & Klavierquartett No. 2
album: Haydn: String Quartets Op.76 Nos. 1, 5 & 6
album: Brahms: Klarinettenquintett, Op. 115 & Streichquintett Nr. 2, Op. 111
album: Beethoven: String Quartet No.11/Schubert: String Quartet No.13
album: Schubert: Streichquartette Nos. 10 & 14 "Der Tod und das Mädchen"
album: Schubert: Streichquartette 12 & 15
album: Lutosławski: Streichquartett - Urbanner: Streichquartett No. 4 - Berio: Notturno
album: Beethoven: String Quartets Nos. 14 & 15
album: Haydn - String Quartets, Op 76 Nos 2-4
album: Dvořák & Schumann: Piano Quintets
album: Beethoven: String Quartets, Op. 95 "Serioso", 130 & 133
album: Haydn: String Quartets, Op. 77 - Berio: Notturno (Quartetto III)
album: Janácek: String Quartets
album: J. Strauss II/Lanner - Waltzes
album: Berg - Chamber Works
album: Brahms: String Quartets, Op. 51 & 67
album: Debussy & Ravel: String Quartets & Stravinsky: 3 Pieces, Concertino & Double Canon
album: Rihm & Schnittke: String Quartets No. 4 (Live at Vienna Konzerthaus, 1990)
album: Beethoven: Complete String Quartets, Vol. 2 (Live at Vienna Konzerthaus, 1989)
album: Beethoven: Complete String Quartets, Vol. 1 (Live at Vienna Konzerthaus, 1989)
track: String Quartet No.12 in E Flat, Op.127: I. Maestoso - Allegro
track: String Quartet No.12 in E Flat, Op.127: II. Adagio ma non troppo, molto cantabile
track: Grosse Fuge in B Flat Major, Op.133
track: String Quartet No.14 in C Sharp Minor, Op.131: I. Adagio ma non troppo e molto espressivo
track: String Quartet No.12 in E Flat, Op.127: III. Scherzando vivace
track: String Quartet No. 13 in B Flat Major, Op.130: I. Adagio ma non troppo - Allegro
track: String Quartet No. 13 in B Flat Major, Op.130: V. Cavatina (Adagio molto espressivo)
track: String Quartet No.14 in C Sharp Minor, Op.131: V. Presto
track: String Quartet No.15 in A Minor, Op.132: III. Molto adagio
track: String Quartet No.12 in E Flat, Op.127: IV. Finale
track: String Quartet No. 13 in B Flat Major, Op.130: II. Presto
track: String Quartet No. 13 in B Flat Major, Op.130: III. Andante con moto, ma non troppo
track: String Quartet No. 13 in B Flat Major, Op.130: IV. Alla danza tedesca (Allegro assai)
track: String Quartet No.14 in C Sharp Minor, Op.131: IV. Andante ma non troppo e molto cantabile
track: String Quartet No.15 in A Minor, Op.132: I. Assai sostenuto - Allegro
track: String Quartet No. 13 in B Flat Major, Op.130: VI. Finale (Allegro)
track: String Quartet No.14 in C Sharp Minor, Op.131: II. Allegro molto vivace
track: String Quartet No.14 in C Sharp Minor, Op.131: III. Andante moderato
track: String Quartet No.14 in C Sharp Minor, Op.131: VI. Adagio quasi un poco andante

Franz Schubert
type: MusicGroup

Harald Bergmann
type: MusicGroup

Walter Schmidinger
type: MusicGroup

Peter Schneider
type: MusicGroup

Scardanelli
type: MusicAlbum
date published: 2004-06-28

Larghetto
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duration ms: 84400
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by artist: Christian Ivaldi
by artist: Noël Lee
by artist: Peter Schneider
in album: Scardanelli
  type: MusicAlbum
  date published: 2004-06-28

Lieber Bellarmin!
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duration: PT0M46S
duration ms: 46413
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by artist: Harald Bergmann
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by artist: Christian Ivaldi
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by artist: Peter Schneider
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  type: MusicAlbum
  date published: 2004-06-28

Aber dreifach fühlt´ ich ihn
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by artist: Franz Schubert
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Besuch Christoph Schwab
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  date published: 2004-06-28

Seine unheimlich langen Fingernägel
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  type: MusicAlbum
  date published: 2004-06-28

In lieblicher Bläue 1
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by artist: Franz Schubert
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in album: Scardanelli
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In lieblicher Bläue 2
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duration ms: 150093
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by artist: Franz Schubert
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  type: MusicAlbum
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In lieblicher Bläue 3
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duration ms: 195986
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  date published: 2004-06-28

Seit derer Nacht
type: MusicRecording
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  type: MusicAlbum
  date published: 2004-06-28

Dr. Gmelins Sektionsbericht
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duration ms: 88306
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Der Herbst (Das Glänzen der Natur)
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by artist: Franz Schubert
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Liebste Mutter!
type: MusicRecording
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by artist: Johann Sebastian Bach
by artist: Harald Bergmann
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Die Aussicht (Wenn in die Ferne)
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Schlussszene
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Lottes Todesbericht
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Epilog
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Beethoven & Schubert
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track: Beethoven: String Quartet No. 14 in C-Sharp Minor, Op. 131: I. Adagio ma non troppo e molto espressivo (Live at Konzerthaus, Wien, 1989)
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track: Beethoven: String Quartet No. 14 in C-Sharp Minor, Op. 131: II. Allegro molto vivace (Live at Konzerthaus, Wien, 1989)
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track: Beethoven: String Quartet No. 14 in C-Sharp Minor, Op. 131: III. Allegro moderato (Live at Konzerthaus, Wien, 1989)
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track: Beethoven: String Quartet No. 14 in C-Sharp Minor, Op. 131: IV. Andante ma non troppo e molto cantabile (Live at Konzerthaus, Wien, 1989)
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track: Beethoven: String Quartet No. 14 in C-Sharp Minor, Op. 131: V. Presto (Live at Konzerthaus, Wien, 1989)
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track: Beethoven: String Quartet No. 14 in C-Sharp Minor, Op. 131: VI. Adagio quasi un poco andante (Live at Konzerthaus, Wien, 1989)
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track: Beethoven: String Quartet No. 14 in C-Sharp Minor, Op. 131: VII. Allegro (Live at Konzerthaus, Wien, 1989)
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track: Schubert: String Quartet No. 14 in D Minor, D. 810 "Death and the Maiden": I. Allegro
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track: Schubert: String Quartet No. 14 in D Minor, D. 810 "Death and the Maiden": II. Andante con moto
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track: Schubert: String Quartet No. 14 in D Minor, D. 810 "Death and the Maiden": III. Scherzo. Allegro molto - Trio
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track: Schubert: String Quartet No. 14 in D Minor, D. 810 "Death and the Maiden": IV. Presto
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track: Beethoven: String Quartet No. 4 in C Minor, Op. 18 No. 4: I. Allegro ma non tanto
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track: Beethoven: String Quartet No. 4 in C Minor, Op. 18 No. 4: IV. Allegro
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track: Schubert: Piano Quintet in A Major, Op. Posth. 114, D. 667 "The Trout": I. Allegro vivace
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track: Schubert: Piano Quintet in A Major, Op. Posth. 114, D. 667 "The Trout": II. Andante
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track: Schubert: Piano Quintet in A Major, Op. Posth. 114, D. 667 "The Trout": III. Scherzo. Presto
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track: Schubert: Piano Quintet in A Major, Op. Posth. 114, D. 667 "The Trout": V. Finale. Allegro giusto
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    date published: 2024-02-15
track: Beethoven: String Quartet No. 12 in E-Flat Major, Op. 127: I. Maestoso - Allegro (Live at Konzerthaus, Wien, 1989)
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track: Beethoven: String Quartet No. 13 in B-Flat Major, Op. 130: V. Cavatina. Adagio molto espressivo
track: Beethoven: Grosse Fuge in B-Flat Major, Op. 133
track: Beethoven: String Quartet No. 3 in D Major, Op. 18 No. 3: II. Andante con moto
track: Beethoven: String Quartet No. 1 in F Major, Op. 18 No. 1: I. Allegro con brio
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Schubert: String Quartet No. 13 in A Minor, Op. 29, D. 804 "Rosamunde": I. Allegro ma non troppo
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Beethoven: String Quartet No. 7 in F Major, Op. 59 No. 1 "Razumovsky": I. Allegro
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Beethoven: String Quartet No. 8 in E Minor, Op. 59 No. 2 "Razumovsky": III. Allegretto
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Beethoven: String Quartet No. 11 in F Minor, Op. 95 "Quartetto serioso": I. Allegro con brio
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Beethoven: String Quartet No. 13 in B-Flat Major, Op. 130: V. Cavatina. Adagio molto espressivo
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Beethoven: Grosse Fuge in B-Flat Major, Op. 133
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Beethoven: String Quartet No. 3 in D Major, Op. 18 No. 3: II. Andante con moto
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Beethoven: String Quartet No. 1 in F Major, Op. 18 No. 1: I. Allegro con brio
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Schubert: String Quintet in C Major, Op. 163, D. 956: I. Allegro ma non troppo
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Schubert: String Quintet in C Major, Op. 163, D. 956: II. Adagio
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Schubert: String Quintet in C Major, Op. 163, D. 956: III. Scherzo. Presto - Trio. Andante sostenuto
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Schubert: String Quintet in C Major, Op. 163, D. 956: IV. Allegretto - Più allegro
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Schubert, Dvořák, Brahms & Schumann: Piano Quintets
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track: Schubert: Piano Quintet in A Major, Op. Posth. 114, D. 667 "The Trout": IV. Tema con variazione. Andantino
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track: Schubert: Piano Quintet in A Major, Op. Posth. 114, D. 667 "The Trout": V. Finale. Allegro giusto
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track: Dvořák: Piano Quintet in A Major, Op. 81, B. 155: I. Allegro ma non tanto
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track: Dvořák: Piano Quintet in A Major, Op. 81, B. 155: III. Scherzo. Furiant
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Beethoven & Schubert, Vol. 2
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track: Beethoven: String Quartet No. 13 in B-Flat Major, Op. 130: I. Adagio ma non troppo - Allegro (Live at Konzerthaus, Wien, 1989)
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track: Beethoven: String Quartet No. 13 in B-Flat Major, Op. 130: II. Presto (Live at Konzerthaus, Wien, 1989)
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track: Beethoven: String Quartet No. 13 in B-Flat Major, Op. 130: III. Andante con moto ma non troppo (Live at Konzerthaus, Wien, 1989)
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track: Beethoven: String Quartet No. 13 in B-Flat Major, Op. 130: IV. Alla danza tedesca. Allegro assai (Live at Konzerthaus, Wien, 1989)
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    date published: 2024-04-25
track: Beethoven: String Quartet No. 13 in B-Flat Major, Op. 130: V. Cavatina. Adagio molto espressivo (Live at Konzerthaus, Wien, 1989)
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    date published: 2024-04-25
track: Beethoven: String Quartet No. 13 in B-Flat Major, Op. 130: VI. Finale. Allegro (Live at Konzerthaus, Wien, 1989)
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    date published: 2024-04-25
track: Schubert: String Quartet No. 15 in G Major, Op. 161, D. 887: II. Andante un poco moto
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  duration: PT12M21S
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    date published: 2024-04-25
track: Beethoven: String Quartet No. 7 in F Major, Op. 59 No. 1 "Razumovsky": IV. Thème russe. Allegro
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    date published: 2024-04-25
track: Beethoven: String Quartet No. 9 in C Major, Op. 59 No. 3 "Razumovsky": I. Introduzione. Andante con moto - Allegro vivace
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track: Beethoven: String Quartet No. 9 in C Major, Op. 59 No. 3 "Razumovsky": IV. Allegro molto
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    date published: 2024-04-25
track: Schubert: String Quartet No. 14 in D Minor, D. 810 "Death and the Maiden": I. Allegro
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    date published: 2024-04-25
track: Schubert: String Quartet No. 14 in D Minor, D. 810 "Death and the Maiden": II. Andante con moto
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  duration: PT10M43S
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track: Schubert: String Quartet No. 14 in D Minor, D. 810 "Death and the Maiden": III. Scherzo. Allegro molto - Trio
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  duration: PT3M29S
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track: Schubert: String Quartet No. 14 in D Minor, D. 810 "Death and the Maiden": IV. Presto
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  duration: PT9M12S
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track: Beethoven: String Quartet No. 15 in A Minor, Op. 132: I. Assai sostenuto - Allegro (Live at Konzerthaus, Wien, 1989)
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track: Dvořák: String Quartet No. 14 in A-Flat Major, Op. 105, B. 193: III. Lento e molto cantabile (Live at Wiener Konzerthaus, 1999)
track: Dvořák: String Quartet No. 14 in A-Flat Major, Op. 105, B. 193: IV. Allegro non tanto (Live at Wiener Konzerthaus, 1999)
track: Brahms: String Quintet No. 2 in G Major, Op. 111: I. Allegro non troppo, ma con brio
track: Brahms: String Quintet No. 2 in G Major, Op. 111: II. Adagio

Alban Berg Quartett
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Schumann, Brahms & Dvořák
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date published: 2024-04-22

Dvořák: String Quartet No. 13 in G Major, Op. 106, B. 192: I. Allegro moderato
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Dvořák: String Quartet No. 13 in G Major, Op. 106, B. 192: II. Adagio ma non troppo
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Dvořák: String Quartet No. 13 in G Major, Op. 106, B. 192: III. Molto vivace
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Dvořák: String Quartet No. 13 in G Major, Op. 106, B. 192: IV. Finale. Andante sostenuto - Allegro con fuoco
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Brahms: String Quartet No. 3 in B-Flat Major, Op. 67: I. Vivace
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Brahms: String Quartet No. 3 in B-Flat Major, Op. 67: II. Andante
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Brahms: String Quartet No. 3 in B-Flat Major, Op. 67: III. Agitato. Allegretto non troppo
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Brahms: String Quartet No. 3 in B-Flat Major, Op. 67: IV. Poco allegretto con variazioni
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Dvořák: Piano Quintet in A Major, Op. 81, B. 155: I. Allegro ma non tanto
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Dvořák: Piano Quintet in A Major, Op. 81, B. 155: II. Dumka. Andante con moto
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Dvořák: Piano Quintet in A Major, Op. 81, B. 155: III. Scherzo. Furiant
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Dvořák: Piano Quintet in A Major, Op. 81, B. 155: IV. Finale. Allegro
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Brahms: String Sextet No. 2 in G Major, Op. 36: I. Allegro non troppo (Live at Salle Favart, 1987)
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Brahms: String Sextet No. 2 in G Major, Op. 36: II. Scherzo. Allegro non troppo (Live at Salle Favart, 1987)
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Brahms: String Sextet No. 2 in G Major, Op. 36: III. Poco adagio (Live at Salle Favart, 1987)
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Brahms: String Sextet No. 2 in G Major, Op. 36: IV. Poco allegro (Live at Salle Favart, 1987)
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Schumann: Piano Quintet in E-Flat Major, Op. 44: I. Allegro brillante (Live at Carnegie Hall, 1985)
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Schumann: Piano Quintet in E-Flat Major, Op. 44: II. In modo d'una marcia. Un poco largamente (Live at Carnegie Hall, 1985)
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Schumann: Piano Quintet in E-Flat Major, Op. 44: III. Scherzo. Molto vivace - Trio (Live at Carnegie Hall, 1985)
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Schumann: Piano Quintet in E-Flat Major, Op. 44: IV. Finale. Allegro ma non troppo (Live at Carnegie Hall, 1985)
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Brahms: String Sextet No. 1 in B-Flat Major, Op. 18: I. Allegro ma non troppo (Live at Wiener Konzerthaus, 1990)
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Brahms: String Sextet No. 1 in B-Flat Major, Op. 18: II. Andante ma moderato (Live at Wiener Konzerthaus, 1990)
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Brahms: String Sextet No. 1 in B-Flat Major, Op. 18: III. Scherzo. Allegro molto (Live at Wiener Konzerthaus, 1990)
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Brahms: String Sextet No. 1 in B-Flat Major, Op. 18: IV. Rondo. Poco allegretto e grazioso (Live at Wiener Konzerthaus, 1990)
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Brahms: Clarinet Quintet in B Minor, Op. 115: I. Allegro
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Brahms: Clarinet Quintet in B Minor, Op. 115: II. Adagio
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Brahms: Clarinet Quintet in B Minor, Op. 115: III. Andantino
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Brahms: Clarinet Quintet in B Minor, Op. 115: IV. Con moto
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Dvorák: String Quartet No. 14 in A-Flat Major, Op. 105, B. 193: I. Adagio ma non troppo - Allegro appassionato (Live at Wiener Konzerthaus, 1999)
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Dvořák: String Quartet No. 14 in A-Flat Major, Op. 105, B. 193: II. Molto vivace (Live at Wiener Konzerthaus, 1999)
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Dvořák: String Quartet No. 14 in A-Flat Major, Op. 105, B. 193: III. Lento e molto cantabile (Live at Wiener Konzerthaus, 1999)
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Dvořák: String Quartet No. 14 in A-Flat Major, Op. 105, B. 193: IV. Allegro non tanto (Live at Wiener Konzerthaus, 1999)
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Brahms: String Quintet No. 2 in G Major, Op. 111: I. Allegro non troppo, ma con brio
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  date published: 2024-04-22

Brahms: String Quintet No. 2 in G Major, Op. 111: II. Adagio
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Mozart & Haydn
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date published: 2024-04-18
track: Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": I. Allegro
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track: Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": II. (a) Poco adagio, cantabile
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track: Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": II. (b) Variation I
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track: Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": II. (c) Variation II
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track: Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": II. (d) Variation III
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track: Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": II. (e) Variation IV
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track: Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": III. Menuetto. Allegro
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track: Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": IV. Finale. Presto
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track: Mozart: String Quartet No. 17 in B-Flat Major, Op. 10 No. 3, K. 458 "Hunt": I. Allegro vivace assai
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track: Mozart: String Quartet No. 17 in B-Flat Major, Op. 10 No. 3, K. 458 "Hunt": II. Minuetto. Moderato
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track: Mozart: String Quartet No. 17 in B-Flat Major, Op. 10 No. 3, K. 458 "Hunt": III. Adagio
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track: Mozart: String Quartet No. 17 in B-Flat Major, Op. 10 No. 3, K. 458 "Hunt": IV. Allegro assai
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track: Mozart: String Quartet No. 19 in C Major, Op. 10 No. 6, K. 465 "Dissonance": I. Adagio - Allegro
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track: Mozart: String Quartet No. 19 in C Major, Op. 10 No. 6, K. 465 "Dissonance": II. Andante cantabile
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track: Mozart: String Quartet No. 22 in B-Flat Major, K. 589 "Prussian Quartet No. 2": I. Allegro
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track: Mozart: String Quartet No. 22 in B-Flat Major, K. 589 "Prussian Quartet No. 2": II. Larghetto
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track: Mozart: String Quartet No. 22 in B-Flat Major, K. 589 "Prussian Quartet No. 2": III. Menuetto. Moderato
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track: Mozart: String Quartet No. 22 in B-Flat Major, K. 589 "Prussian Quartet No. 2": IV. Allegro assai
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track: Haydn: String Quartet in C Major, Op. 33 No. 3, Hob. III:39 "The Bird": I. Allegro moderato (Live at Wiener Konzerthaus, 1999)
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track: Haydn: String Quartet in C Major, Op. 33 No. 3, Hob. III:39 "The Bird": IV. Finale. Rondo presto (Live at Wiener Konzerthaus, 1999)
track: Mozart: String Quartet No. 20 in D Major, K. 499 "Hoffmeister": I. Allegretto
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track: Mozart: String Quartet No. 20 in D Major, K. 499 "Hoffmeister": IV. Allegro
track: Haydn: String Quartet in G Minor, Op. 74 No. 3, Hob. III:74 "The Rider": I. Allegro
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track: Haydn: String Quartet in G Minor, Op. 74 No. 3, Hob. III:74 "The Rider": IV. Finale. Allegro con brio
track: Haydn: String Quartet in E-Flat Major, Op. 76 No. 6, Hob. III:80: I. Allegretto
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Haydn: String Quartet in C Major, Op. 33 No. 3, Hob. III:39 "The Bird": I. Allegro moderato (Live at Wiener Konzerthaus, 1999)
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Haydn: String Quartet in C Major, Op. 33 No. 3, Hob. III:39 "The Bird": II. Scherzo. Allegretto - Trio (Live at Wiener Konzerthaus, 1999)
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Haydn: String Quartet in C Major, Op. 33 No. 3, Hob. III:39 "The Bird": III. Adagio (Live at Wiener Konzerthaus, 1999)
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Haydn: String Quartet in C Major, Op. 33 No. 3, Hob. III:39 "The Bird": IV. Finale. Rondo presto (Live at Wiener Konzerthaus, 1999)
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Mozart: String Quartet No. 20 in D Major, K. 499 "Hoffmeister": I. Allegretto
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Mozart: String Quartet No. 20 in D Major, K. 499 "Hoffmeister": II. Menuetto. Allegretto
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Mozart: String Quartet No. 20 in D Major, K. 499 "Hoffmeister": III. Adagio
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Mozart: String Quartet No. 20 in D Major, K. 499 "Hoffmeister": IV. Allegro
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Haydn: String Quartet in G Minor, Op. 74 No. 3, Hob. III:74 "The Rider": I. Allegro
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Haydn: String Quartet in G Minor, Op. 74 No. 3, Hob. III:74 "The Rider": II. Largo assai
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Haydn: String Quartet in G Minor, Op. 74 No. 3, Hob. III:74 "The Rider": III. Menuetto. Allegretto
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Haydn: String Quartet in G Minor, Op. 74 No. 3, Hob. III:74 "The Rider": IV. Finale. Allegro con brio
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Haydn: String Quartet in E-Flat Major, Op. 76 No. 6, Hob. III:80: I. Allegretto
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Haydn: String Quartet in E-Flat Major, Op. 76 No. 6, Hob. III:80: II. Fantasia. Adagio
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Haydn: String Quartet in E-Flat Major, Op. 76 No. 6, Hob. III:80: III. Menuetto - Alternativo
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Haydn: String Quartet in E-Flat Major, Op. 76 No. 6, Hob. III:80: IV. Finale. Allegro spirituoso
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Schubert: String Quartets Nos. 9, 10, 12, 13 "Rosamunde", 14 "Death and the Maiden" & 15, Trout Quintet & String Quintet
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track: Schubert: String Quintet in C Major, Op. 163, D. 956: I. Allegro ma non troppo
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track: Schubert: String Quintet in C Major, Op. 163, D. 956: III. Scherzo. Presto - Trio. Andante sostenuto
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track: Schubert: String Quintet in C Major, Op. 163, D. 956: IV. Allegretto - Più allegro
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track: Schubert: String Quartet No. 14 in D Minor, D. 810 "Death and the Maiden": I. Allegro
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track: Schubert: String Quartet No. 14 in D Minor, D. 810 "Death and the Maiden": III. Scherzo. Allegro molto - Trio
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track: Schubert: String Quartet No. 9 in G Minor, D. 173: I. Allegro con brio
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track: Schubert: String Quartet No. 9 in G Minor, D. 173: II. Andantino
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track: Schubert: String Quartet No. 9 in G Minor, D. 173: IV. Allegro
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track: Schubert: String Quartet No. 10 in E-Flat Major, Op. Posth. 125 No. 1, D. 87: I. Allegro moderato
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track: Schubert: String Quartet No. 10 in E-Flat Major, Op. Posth. 125 No. 1, D. 87: II. Scherzo. Prestissimo - Trio
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track: Schubert: String Quartet No. 13 in A Minor, Op. 29, D. 804 "Rosamunde": I. Allegro ma non troppo
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track: Schubert: String Quartet No. 13 in A Minor, Op. 29, D. 804 "Rosamunde": III. Menuetto. Allegretto - Trio
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track: Schubert: String Quartet No. 15 in G Major, Op. Posth. 161, D. 887: I. Allegro molto moderato
track: Schubert: String Quartet No. 15 in G Major, Op. 161, D. 887: II. Andante un poco moto
track: Schubert: String Quartet No. 15 in G Major, Op. 161, D. 887: III. Scherzo. Allegro vivace - Trio. Allegretto
track: Schubert: String Quartet No. 15 in G Major, Op. 161, D. 887: IV. Allegro assai
track: Schubert: String Quartet No. 12 in C Minor, D. 703 "Quartettsatz"
track: Schubert: Piano Quintet in A Major, Op. Posth. 114, D. 667 "The Trout": I. Allegro vivace
track: Schubert: Piano Quintet in A Major, Op. Posth. 114, D. 667 "The Trout": II. Andante
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track: Schubert: Piano Quintet in A Major, Op. Posth. 114, D. 667 "The Trout": IV. Tema con variazione. Andantino
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Schubert: String Quartet No. 13 in A Minor, Op. 29, D. 804 "Rosamunde": IV. Allegro moderato
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Schubert: String Quartet No. 15 in G Major, Op. Posth. 161, D. 887: I. Allegro molto moderato
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Schubert: String Quartet No. 15 in G Major, Op. 161, D. 887: II. Andante un poco moto
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Schubert: String Quartet No. 15 in G Major, Op. 161, D. 887: III. Scherzo. Allegro vivace - Trio. Allegretto
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Schubert: String Quartet No. 15 in G Major, Op. 161, D. 887: IV. Allegro assai
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Schubert: String Quartet No. 12 in C Minor, D. 703 "Quartettsatz"
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Schubert: Piano Quintet in A Major, Op. Posth. 114, D. 667 "The Trout": I. Allegro vivace
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Schubert: Piano Quintet in A Major, Op. Posth. 114, D. 667 "The Trout": II. Andante
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Schubert: Piano Quintet in A Major, Op. Posth. 114, D. 667 "The Trout": III. Scherzo. Presto
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Schubert: Piano Quintet in A Major, Op. Posth. 114, D. 667 "The Trout": IV. Tema con variazione. Andantino
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Schubert: Piano Quintet in A Major, Op. Posth. 114, D. 667 "The Trout": V. Finale. Allegro giusto
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Quartet Recital 1978
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track: String Quartet No. 7 in F Major, Op. 59, No. 1, "Rasumovsky": III. Adagio molto e mesto -
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track: String Quartet: I. Introductory movement
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track: String Quartet: II. Main movement -
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track: String Quartet: II. Funebre
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Beethoven: Complete String Quartets
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Beethoven: String Quartet No. 16 in F Major, Op. 135: I. Allegretto
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Beethoven: Grosse Fuge in B-Flat Major, Op. 133
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Beethoven: String Quartet No. 16 in F Major, Op. 135: III. Lento assai, cantante tranquillo
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Beethoven: String Quartet No. 13 in B-Flat Major, Op. 130: VI. Finale. Allegro
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Janácek: String Quartets & Dvorák: Piano Quintet in A - Dumka
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20th Century Masterpieces
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track: String Quartet, Op. 3: I. Langsam
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track: Stravinsky: 3 Pieces for String Quartet: No. 2
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track: Von Einem: String Quartet No. 1, Op. 45: II. Adagio molto
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track: String Quartet, Op. 3: II. Mäßige Viertel
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track: Stravinsky: 3 Pieces for String Quartet: No. 3
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track: Von Einem: String Quartet No. 1, Op. 45: III. Moderato
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track: String Quartet No. 1 'after Tolstoy's 'The Kreutzer Sonata' ': I. Adagio - Con moto
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track: Stravinsky: Concertino for String Quartet
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track: Schnittke: String Quartet No. 4: I. Lento (Live at Vienna Konzerthaus, 1990)
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track: String Quartet No. 1 'after Tolstoy's 'The Kreutzer Sonata' ': II. Con moto
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track: Piazzolla: 5 Tango Sensations: No. 1, Asleep
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track: Schnittke: String Quartet No. 4: II. Allegro (Live at Vienna Konzerthaus, 1990)
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track: String Quartet No. 1 'after Tolstoy's 'The Kreutzer Sonata' ': III. Con moto - Vivo - Andante
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track: Piazzolla: 5 Tango Sensations: No. 3, Anxiety
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track: Schnittke: String Quartet No. 4: III. Lento (Live at Vienna Konzerthaus, 1990)
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track: String Quartet No. 1 'after Tolstoy's 'The Kreutzer Sonata' ': IV. Con moto
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track: Piazzolla: 5 Tango Sensations: No. 4, Awake
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track: Schnittke: String Quartet No. 4: IV. Vivace (Live at Vienna Konzerthaus, 1990)
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track: Lutosławski: String Quartet: I. —
track: Berio: Notturno (Quartetto III) [Live, 1994]
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track: Lutosławski: String Quartet: II. —
track: Bartók: String Quartet No. 6 in D Major, Sz. 114: IV. Mesto
track: Haubenstock-Ramati: String Quartet No. 2 "In memoriam Christl Zimmer": I. Bittersüß, "Wienerisch"
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track: Haubenstock-Ramati: String Quartet No. 2 "In memoriam Christl Zimmer": V. Kanon II
track: Haubenstock-Ramati: String Quartet No. 2 "In memoriam Christl Zimmer": VI. Valse triste

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Bartók: String Quartet No. 6 in D Major, Sz. 114: I. Mesto - Vivace
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Piazzolla: 5 Tango Sensations: No. 5, Fear
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Schnittke: String Quartet No. 4: V. Lento (Live at Vienna Konzerthaus, 1990)
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Bartók: String Quartet No. 6 in D Major, Sz. 114: II. Mesto - Marcia
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Lutosławski: String Quartet: I. —
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Berio: Notturno (Quartetto III) [Live, 1994]
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Bartók: String Quartet No. 6 in D Major, Sz. 114: III. Mesto - Burletta. Moderato
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Lutosławski: String Quartet: II. —
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Bartók: String Quartet No. 6 in D Major, Sz. 114: IV. Mesto
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Haubenstock-Ramati: String Quartet No. 2 "In memoriam Christl Zimmer": I. Bittersüß, "Wienerisch"
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Haubenstock-Ramati: String Quartet No. 2 "In memoriam Christl Zimmer": II. Ziemlich rasch
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Haubenstock-Ramati: String Quartet No. 2 "In memoriam Christl Zimmer": III. Kanon I
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Haubenstock-Ramati: String Quartet No. 2 "In memoriam Christl Zimmer": IV. Violente
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Haubenstock-Ramati: String Quartet No. 2 "In memoriam Christl Zimmer": V. Kanon II
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Haubenstock-Ramati: String Quartet No. 2 "In memoriam Christl Zimmer": VI. Valse triste
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Alban Berg Quartet - The Teldec Recordings
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date published: 1970-01-01
track: Haydn: String Quartet in G Minor, Op. 74 No. 3, Hob. III:74 "The Rider": I. Allegro
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track: Haydn: String Quartet in G Minor, Op. 74 No. 3, Hob. III:74 "The Rider": II. Largo assai
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track: Haydn: String Quartet in G Minor, Op. 74 No. 3, Hob. III:74 "The Rider": III. Menuetto. Allegretto
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track: Haydn: String Quartet in G Minor, Op. 74 No. 3, Hob. III:74 "The Rider": IV. Finale. Allegro con brio
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track: Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": I. Allegro
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track: Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": II. Poco adagio, cantabile
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track: Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": III. Menuetto. Allegro
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track: Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": IV. Finale. Presto
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track: Mozart: String Quartet No. 14 in G Major, Op. 10 No. 1, K. 387 "Spring": I. Allegro vivace assai
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track: Mozart: String Quartet No. 14 in G Major, Op. 10 No. 1, K. 387 "Spring": II. Minuetto. Allegro
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track: Mozart: String Quartet No. 14 in G Major, Op. 10 No. 1, K. 387 "Spring": III. Andante cantabile
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track: Mozart: String Quartet No. 14 in G Major, Op. 10 No. 1, K. 387 "Spring": IV. Molto allegro
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    date published: 1970-01-01
track: Mozart: String Quartet No. 15 in D Minor, Op. 10 No. 2, K. 421: I. Allegro moderato
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track: Mozart: String Quartet No. 15 in D Minor, Op. 10 No. 2, K. 421: II. Andante
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track: Mozart: String Quartet No. 15 in D Minor, Op. 10 No. 2, K. 421: III. Menuetto. Allegretto
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    date published: 1970-01-01
track: Mozart: String Quartet No. 16 in E-Flat Major, Op. 10 No. 4, K. 428: I. Allegro non troppo
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track: Mozart: String Quartet No. 16 in E-Flat Major, Op. 10 No. 4, K. 428: II. Andante con moto
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track: Mozart: String Quartet No. 16 in E-Flat Major, Op. 10 No. 4, K. 428: III. Menuetto. Allegro
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track: Mozart: String Quartet No. 16 in E-Flat Major, Op. 10 No. 4, K. 428: IV. Allegro vivace
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    date published: 1970-01-01
track: Mozart: String Quartet No. 17 in B-Flat Major, Op. 10 No. 3, K. 458 "Hunt": I. Allegro vivace assai
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track: Mozart: String Quartet No. 17 in B-Flat Major, Op. 10 No. 3, K. 458 "Hunt": IV. Allegro assai
track: Mozart: String Quartet No. 18 in A Major, Op. 10 No. 5, K. 464: I. Allegro
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track: Mozart: String Quartet No. 18 in A Major, Op. 10 No. 5, K. 464: III. Andante
track: Mozart: String Quartet No. 18 in A Major, Op. 10 No. 5, K. 464: IV. Allegro
track: Mozart: String Quartet No. 19 in C Major, Op. 10 No. 6, K. 465 "Dissonance": I. Adagio - Allegro
track: Mozart: String Quartet No. 19 in C Major, Op. 10 No. 6, K. 465 "Dissonance": II. Andante cantabile
track: Mozart: String Quartet No. 19 in C Major, Op. 10 No. 6, K. 465 "Dissonance": III. Menuetto. Allegro
track: Mozart: String Quartet No. 19 in C Major, Op. 10 No. 6, K. 465 "Dissonance": IV. Allegro
track: Mozart: String Quartet No. 20 in D Major, K. 499 "Hoffmeister": I. Allegretto
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track: Mozart: String Quartet No. 20 in D Major, K. 499 "Hoffmeister": III. Adagio
track: Mozart: String Quartet No. 20 in D Major, K. 499 "Hoffmeister": IV. Allegro
track: Mozart: String Quartet No. 21 in D Major, K. 575 "Prussian Quartet No. 1": I. Allegretto
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track: Mozart: String Quartet No. 21 in D Major, K. 575 "Prussian Quartet No. 1": IV. Allegretto
track: Mozart: String Quartet No. 22 in B-Flat Major, K. 589 "Prussian Quartet No. 2": I. Allegro
track: Mozart: String Quartet No. 22 in B-Flat Major, K. 589 "Prussian Quartet No. 2": II. Larghetto
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track: Mozart: String Quartet No. 22 in B-Flat Major, K. 589 "Prussian Quartet No. 2": IV. Allegro assai
track: Mozart: String Quartet No. 23 in F Major, K. 590 "Prussian Quartet No. 3": I. Allegro moderato
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track: Mozart: String Quartet No. 23 in F Major, K. 590 "Prussian Quartet No. 3": III. Minuetto. Allegretto
track: Mozart: String Quartet No. 23 in F Major, K. 590 "Prussian Quartet No. 3": IV. Allegro
track: Schubert: String Quartet No. 13 in A Minor, Op. 29, D. 804 "Rosamunde": I. Allegro ma non troppo
track: Schubert: String Quartet No. 13 in A Minor, Op. 29, D. 804 "Rosamunde": II. Andante

Mozart: String Quartet No. 17 in B-Flat Major, Op. 10 No. 3, K. 458 "Hunt": I. Allegro vivace assai
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Mozart: String Quartet No. 17 in B-Flat Major, Op. 10 No. 3, K. 458 "Hunt": II. Minuetto. Moderato
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Mozart: String Quartet No. 17 in B-Flat Major, Op. 10 No. 3, K. 458 "Hunt": III. Adagio
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Mozart: String Quartet No. 17 in B-Flat Major, Op. 10 No. 3, K. 458 "Hunt": IV. Allegro assai
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value: 2026-06-20T19:44:44+00:00

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0x7f96d6bcdc34c904828c7e6192c37db455e765d9ddee6707d5d674b200bacbef

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 957145

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block/957145

OTSRecordURL
type: PropertyValue
value: https://artists.proofprofile.net/proofs/track/48zTRFAJHUKfoGdzqVoEtD.json

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/48zTRFAJHUKfoGdzqVoEtD

OTSTimestamp
type: PropertyValue
value: 2026-07-08T08:56:20Z

OTSCanonicalRecord
type: PropertyValue
value: {"copyright_id":"0x7f96d6bcdc34c904828c7e6192c37db455e765d9ddee6707d5d674b200bacbef","isrc":"GBAYC9401707","name":"Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 \"Emperor\": II. (b) Variation I","registered_at":"2026-06-20T19:44:44Z","spotify_id":"48zTRFAJHUKfoGdzqVoEtD","type":"track"}

OTSVerifyInstructions
type: PropertyValue
value: 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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f96d6bcdc34c904828c7e6192c37db455e765d9ddee6707d5d674b200bacbef. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/48zTRFAJHUKfoGdzqVoEtD.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/48zTRFAJHUKfoGdzqVoEtD.
date published: 2026-07-08T08:56:20Z
text: {"copyright_id":"0x7f96d6bcdc34c904828c7e6192c37db455e765d9ddee6707d5d674b200bacbef","isrc":"GBAYC9401707","name":"Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 \"Emperor\": II. (b) Variation I","registered_at":"2026-06-20T19:44:44Z","spotify_id":"48zTRFAJHUKfoGdzqVoEtD","type":"track"}

Beethoven: String Quartet No. 7 in F Major, Op. 59 No. 1 "Razumovsky": IV. Thème russe. Allegro
type: MusicRecording
duration: PT8M21S
duration ms: 501293
explicit: false
by artist: Ludwig van Beethoven
by artist: Alban Berg Quartett
in album: Hommage
  type: MusicAlbum
  date published: 2007-09-14
isrc code: GBAYC7900109

Smetana: String Quartet No. 1 in E Minor "From My Life": IV. Vivace
type: MusicRecording
duration: PT6M1S
duration ms: 361533
explicit: false
by artist: Bedřich Smetana
by artist: Alban Berg Quartett
in album: Hommage
  type: MusicAlbum
  date published: 2007-09-14
isrc code: GBAYC9003596

Ravel: String Quartet, M. 35: IV. Vif et agité
type: MusicRecording
duration: PT4M54S
duration ms: 294226
explicit: false
by artist: Maurice Ravel
by artist: Alban Berg Quartett
in album: Hommage
  type: MusicAlbum
  date published: 2007-09-14
isrc code: GBAYC8400090

Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": II. (c) Variation II
type: MusicRecording
duration: PT1M10S
duration ms: 70173
explicit: false
by artist: Joseph Haydn
by artist: Alban Berg Quartett
in album: Hommage
  type: MusicAlbum
  date published: 2007-09-14
isrc code: GBAYC9401708
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-21T05:30:19+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc243802a635b385f92f1d1809afce760d596340f07b3c0058ca480d79d0a0caa
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957145
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/957145
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/31sOXvdiVVmumHznGl4cy5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/31sOXvdiVVmumHznGl4cy5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T08:56:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc243802a635b385f92f1d1809afce760d596340f07b3c0058ca480d79d0a0caa","isrc":"GBAYC9401708","name":"Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 \"Emperor\": II. (c) Variation II","registered_at":"2026-06-21T05:30:19Z","spotify_id":"31sOXvdiVVmumHznGl4cy5","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc243802a635b385f92f1d1809afce760d596340f07b3c0058ca480d79d0a0caa. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/31sOXvdiVVmumHznGl4cy5.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/31sOXvdiVVmumHznGl4cy5.
  date published: 2026-07-08T08:56:20Z
  text: {"copyright_id":"0xc243802a635b385f92f1d1809afce760d596340f07b3c0058ca480d79d0a0caa","isrc":"GBAYC9401708","name":"Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 \"Emperor\": II. (c) Variation II","registered_at":"2026-06-21T05:30:19Z","spotify_id":"31sOXvdiVVmumHznGl4cy5","type":"track"}

Mendelssohn: String Quartet No. 2 in A Minor, Op. 13, MWV R22: I. Adagio - Allegro vivace
type: MusicRecording
duration: PT7M41S
duration ms: 461626
explicit: false
by artist: Felix Mendelssohn
by artist: Alban Berg Quartett
in album: Hommage
  type: MusicAlbum
  date published: 2007-09-14
isrc code: GBAYC0003566

String Quartet No. 2, 'Intimate Letters': I. Andante
type: MusicRecording
duration: PT6M1S
duration ms: 361133
explicit: false
by artist: Leoš Janáček
by artist: Alban Berg Quartett
in album: Hommage
  type: MusicAlbum
  date published: 2007-09-14
isrc code: GBAYC9401714

Lyric Suite: I. Allegretto giovale
type: MusicRecording
duration: PT3M3S
duration ms: 183040
explicit: false
by artist: Alban Berg
by artist: Alban Berg Quartett
in album: Hommage
  type: MusicAlbum
  date published: 2007-09-14
isrc code: GBAYC9201681

Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": II. (d) Variation III
type: MusicRecording
duration: PT1M11S
duration ms: 71400
explicit: false
by artist: Joseph Haydn
by artist: Alban Berg Quartett
in album: Hommage
  type: MusicAlbum
  date published: 2007-09-14
isrc code: GBAYC9401709
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-21T05:27:17+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbc2332898eca5e198eb514b68fc0b75db9689d9a74379499ab33886abfa0b86e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/957120
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/5FMmUKstA9AsMKLnv2Dpsk.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5FMmUKstA9AsMKLnv2Dpsk
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbc2332898eca5e198eb514b68fc0b75db9689d9a74379499ab33886abfa0b86e","isrc":"GBAYC9401709","name":"Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 \"Emperor\": II. (d) Variation III","registered_at":"2026-06-21T05:27:17Z","spotify_id":"5FMmUKstA9AsMKLnv2Dpsk","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2332898eca5e198eb514b68fc0b75db9689d9a74379499ab33886abfa0b86e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5FMmUKstA9AsMKLnv2Dpsk.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/5FMmUKstA9AsMKLnv2Dpsk.
  date published: 2026-07-08T03:22:41Z
  text: {"copyright_id":"0xbc2332898eca5e198eb514b68fc0b75db9689d9a74379499ab33886abfa0b86e","isrc":"GBAYC9401709","name":"Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 \"Emperor\": II. (d) Variation III","registered_at":"2026-06-21T05:27:17Z","spotify_id":"5FMmUKstA9AsMKLnv2Dpsk","type":"track"}

Mendelssohn: String Quartet No. 2 in A Minor, Op. 13, MWV R22: II. Adagio non lento
type: MusicRecording
duration: PT6M38S
duration ms: 398213
explicit: false
by artist: Felix Mendelssohn
by artist: Alban Berg Quartett
in album: Hommage
  type: MusicAlbum
  date published: 2007-09-14
isrc code: GBAYC0003567

String Quartet No. 2, 'Intimate Letters': II. Adagio
type: MusicRecording
duration: PT5M39S
duration ms: 339706
explicit: false
by artist: Leoš Janáček
by artist: Alban Berg Quartett
in album: Hommage
  type: MusicAlbum
  date published: 2007-09-14
isrc code: GBAYC9401715

Lyric Suite: II. Andante amoroso
type: MusicRecording
duration: PT5M39S
duration ms: 339026
explicit: false
by artist: Alban Berg
by artist: Alban Berg Quartett
in album: Hommage
  type: MusicAlbum
  date published: 2007-09-14
isrc code: GBAYC9201682

Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": II. (e) Variation IV
type: MusicRecording
duration: PT1M45S
duration ms: 105533
explicit: false
by artist: Joseph Haydn
by artist: Alban Berg Quartett
in album: Hommage
  type: MusicAlbum
  date published: 2007-09-14
isrc code: GBAYC9401710
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-20T08:28:45+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8d263805f216f9ead2d50a5facb3dd5add1db534354170ebef4798f73e573775
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/957120
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/37gWMFX1HN8c5lLI4Izqo9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/37gWMFX1HN8c5lLI4Izqo9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8d263805f216f9ead2d50a5facb3dd5add1db534354170ebef4798f73e573775","isrc":"GBAYC9401710","name":"Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 \"Emperor\": II. (e) Variation IV","registered_at":"2026-06-20T08:28:45Z","spotify_id":"37gWMFX1HN8c5lLI4Izqo9","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d263805f216f9ead2d50a5facb3dd5add1db534354170ebef4798f73e573775. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/37gWMFX1HN8c5lLI4Izqo9.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/37gWMFX1HN8c5lLI4Izqo9.
  date published: 2026-07-08T03:22:41Z
  text: {"copyright_id":"0x8d263805f216f9ead2d50a5facb3dd5add1db534354170ebef4798f73e573775","isrc":"GBAYC9401710","name":"Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 \"Emperor\": II. (e) Variation IV","registered_at":"2026-06-20T08:28:45Z","spotify_id":"37gWMFX1HN8c5lLI4Izqo9","type":"track"}

Mendelssohn: String Quartet No. 2 in A Minor, Op. 13, MWV R22: III. Intermezzo. Allegretto con moto - Allegro di molto
type: MusicRecording
duration: PT4M29S
duration ms: 269666
explicit: false
by artist: Felix Mendelssohn
by artist: Alban Berg Quartett
in album: Hommage
  type: MusicAlbum
  date published: 2007-09-14
isrc code: GBAYC0003568

String Quartet No. 2, 'Intimate Letters': III. Moderato
type: MusicRecording
duration: PT5M29S
duration ms: 329226
explicit: false
by artist: Leoš Janáček
by artist: Alban Berg Quartett
in album: Hommage
  type: MusicAlbum
  date published: 2007-09-14
isrc code: GBAYC9401716

Berg: Lyric Suite for String Quartet: III. Allegro misterioso - Trio estatico
type: MusicRecording
duration: PT3M13S
duration ms: 193920
explicit: false
by artist: Alban Berg
by artist: Alban Berg Quartett
in album: Hommage
  type: MusicAlbum
  date published: 2007-09-14
isrc code: GBAYC9201683

Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": III. Menuetto. Allegro
type: MusicRecording
duration: PT4M26S
duration ms: 266026
explicit: false
by artist: Joseph Haydn
by artist: Alban Berg Quartett
in album: Hommage
  type: MusicAlbum
  date published: 2007-09-14
isrc code: GBAYC9401711
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-21T05:36:56+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc379eb0176acd740775eeab20b3d78b42d5be7d81c1875d83f97eeaff4cd3849
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/957120
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/2F9ttsM85jHyka7Q7TfygF.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2F9ttsM85jHyka7Q7TfygF
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc379eb0176acd740775eeab20b3d78b42d5be7d81c1875d83f97eeaff4cd3849","isrc":"GBAYC9401711","name":"Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 \"Emperor\": III. Menuetto. Allegro","registered_at":"2026-06-21T05:36:56Z","spotify_id":"2F9ttsM85jHyka7Q7TfygF","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc379eb0176acd740775eeab20b3d78b42d5be7d81c1875d83f97eeaff4cd3849. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2F9ttsM85jHyka7Q7TfygF.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/2F9ttsM85jHyka7Q7TfygF.
  date published: 2026-07-08T03:22:41Z
  text: {"copyright_id":"0xc379eb0176acd740775eeab20b3d78b42d5be7d81c1875d83f97eeaff4cd3849","isrc":"GBAYC9401711","name":"Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 \"Emperor\": III. Menuetto. Allegro","registered_at":"2026-06-21T05:36:56Z","spotify_id":"2F9ttsM85jHyka7Q7TfygF","type":"track"}

Mendelssohn: String Quartet No. 2 in A Minor, Op. 13, MWV R22: IV. Presto
type: MusicRecording
duration: PT9M17S
duration ms: 557360
explicit: false
by artist: Felix Mendelssohn
by artist: Alban Berg Quartett
in album: Hommage
  type: MusicAlbum
  date published: 2007-09-14
isrc code: GBAYC0003569

String Quartet No. 2, 'Intimate Letters': IV. Allegro
type: MusicRecording
duration: PT8M8S
duration ms: 488306
explicit: false
by artist: Leoš Janáček
by artist: Alban Berg Quartett
in album: Hommage
  type: MusicAlbum
  date published: 2007-09-14
isrc code: GBAYC9401717

Lyric Suite: IV. Adagio appassionato
type: MusicRecording
duration: PT5M19S
duration ms: 319400
explicit: false
by artist: Alban Berg
by artist: Alban Berg Quartett
in album: Hommage
  type: MusicAlbum
  date published: 2007-09-14
isrc code: GBAYC9201684

Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": IV. Finale. Presto
type: MusicRecording
duration: PT5M47S
duration ms: 347333
explicit: false
by artist: Joseph Haydn
by artist: Alban Berg Quartett
in album: Hommage
  type: MusicAlbum
  date published: 2007-09-14
isrc code: GBAYC9401712
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-20T22:34:59+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb3db4244426d4341c9a8624f5f23163e53ff7caaadd8d389a6e8ca440ae704d5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/957120
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/653TqLWQ3EtEltiaZHddAe.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/653TqLWQ3EtEltiaZHddAe
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb3db4244426d4341c9a8624f5f23163e53ff7caaadd8d389a6e8ca440ae704d5","isrc":"GBAYC9401712","name":"Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 \"Emperor\": IV. Finale. Presto","registered_at":"2026-06-20T22:34:59Z","spotify_id":"653TqLWQ3EtEltiaZHddAe","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
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Bartók: String Quartet No. 4 in C Major, Sz. 91: I. Allegro
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Lyric Suite: V. Presto delirando
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Mozart: String Quartet No. 20 in D Major, K. 499 "Hoffmeister": I. Allegretto
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Bartók: String Quartet No. 4 in C Major, Sz. 91: II. Prestissimo, con sordino
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Lyric Suite: VI. Largo desolato
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Mozart: String Quartet No. 20 in D Major, K. 499 "Hoffmeister": II. Menuetto. Allegretto
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Bartók: String Quartet No. 4 in C Major, Sz. 91: III. Non troppo lento
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Stravinsky: Double Canon for String Quartet "Raoul Dufy in memoriam"
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Bartók: String Quartet No. 4 in C Major, Sz. 91: IV. Allegretto pizzicato
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Rihm: String Quartet No. 4: I. Agitato, allegro - Alla marcia, allegro ma non troppo (Live at Vienna Konzerthaus, 1990)
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Hoffstetter: String Quartet in F Major, Op. 3 No. 5: II. Andante cantabile "Serenade" (Formerly Attributed to Haydn as Hob. III:17)
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Bartók: String Quartet No. 4 in C Major, Sz. 91: V. Allegro molto
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Beethoven: String Quartet No. 16 in F Major, Op. 135: I. Allegretto (Live at Konzerthaus, Wien, 1989)
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Beethoven: String Quartet No. 16 in F Major, Op. 135: II. Vivace (Live at Konzerthaus, Wien, 1989)
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Beethoven: String Quartet No. 16 in F Major, Op. 135: III. Lento assai, cantante tranquillo (Live at Konzerthaus, Wien, 1989)
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subject of: OpenTimestamps Proof of Existence
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Beethoven: String Quartet No. 16 in F Major, Op. 135: IV. Grave ma non troppo tratto - Allegro (Live at Konzerthaus, Wien, 1989)
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  subject of: OpenTimestamps Proof of Existence
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  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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track: String Quartet No.14 in C Sharp Minor, Op.131: I. Adagio ma non troppo e molto espressivo
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  subject of: OpenTimestamps Proof of Existence
track: String Quartet No.15 in A Minor, Op.132: II. Allegro ma non tanto
track: String Quartet No.12 in E Flat, Op.127: III. Scherzando vivace
track: String Quartet No.14 in C Sharp Minor, Op.131: II. Allegro molto vivace
track: String Quartet No.15 in A Minor, Op.132: III. Molto adagio
track: String Quartet No.12 in E Flat, Op.127: IV. Finale
track: String Quartet No.14 in C Sharp Minor, Op.131: III. Andante moderato
track: String Quartet No.15 in A Minor, Op.132: IV. Alla marcia, assai vivace
track: String Quartet No. 13 in B Flat Major, Op.130: I. Adagio ma non troppo - Allegro
track: String Quartet No.14 in C Sharp Minor, Op.131: IV. Andante ma non troppo e molto cantabile
track: String Quartet No.15 in A Minor, Op.132: V. Allegro appasionato
track: String Quartet No. 13 in B Flat Major, Op.130: II. Presto
track: String Quartet No.14 in C Sharp Minor, Op.131: V. Presto
track: String Quartet No. 16 in F Major, Op.135: I. Allegretto
track: String Quartet No. 13 in B Flat Major, Op.130: III. Andante con moto, ma non troppo
track: String Quartet No.14 in C Sharp Minor, Op.131: VI. Adagio quasi un poco andante
track: String Quartet No. 16 in F Major, Op.135: II. Vivace
track: String Quartet No. 13 in B Flat Major, Op.130: IV. Alla danza tedesca (Allegro assai)
track: String Quartet No.14 in C Sharp Minor, Op.131: VII. Allegro
track: String Quartet No. 16 in F Major, Op.135: III. Lento assai e cantante tranquillo
track: String Quartet No. 13 in B Flat Major, Op.130: V. Cavatina (Adagio molto espressivo)
track: String Quartet No. 16 in F Major, Op.135: IV. Grave ma non troppo tratto - Allegro
track: String Quartet No. 13 in B Flat Major, Op.130: VI. Finale (Allegro)

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value: 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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
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date published: 2026-07-02T05:09:12Z
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String Quartet No.15 in A Minor, Op.132: II. Allegro ma non tanto
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
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String Quartet No.12 in E Flat, Op.127: III. Scherzando vivace
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subject of: OpenTimestamps Proof of Existence
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String Quartet No.14 in C Sharp Minor, Op.131: II. Allegro molto vivace
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subject of: OpenTimestamps Proof of Existence
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String Quartet No.15 in A Minor, Op.132: III. Molto adagio
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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String Quartet No.12 in E Flat, Op.127: IV. Finale
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by artist: Ludwig van Beethoven
by artist: Alban Berg Quartett
in album: Beethoven: The Late String Quartets
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additional property: OTSRecordURL
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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String Quartet No.14 in C Sharp Minor, Op.131: III. Andante moderato
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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String Quartet No.15 in A Minor, Op.132: IV. Alla marcia, assai vivace
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String Quartet No. 13 in B Flat Major, Op.130: I. Adagio ma non troppo - Allegro
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by artist: Alban Berg Quartett
in album: Beethoven: The Late String Quartets
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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String Quartet No.14 in C Sharp Minor, Op.131: IV. Andante ma non troppo e molto cantabile
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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String Quartet No.15 in A Minor, Op.132: V. Allegro appasionato
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by artist: Ludwig van Beethoven
by artist: Alban Berg Quartett
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String Quartet No. 13 in B Flat Major, Op.130: II. Presto
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by artist: Alban Berg Quartett
in album: Beethoven: The Late String Quartets
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
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String Quartet No.14 in C Sharp Minor, Op.131: V. Presto
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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String Quartet No. 16 in F Major, Op.135: I. Allegretto
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String Quartet No. 13 in B Flat Major, Op.130: III. Andante con moto, ma non troppo
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  value: https://explorer.copyrightchains.com/tx/0x88023ef93be27d82f3da7bcbd7e5301eae45097a1024bd4aeac918fd2b68a9d8
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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  value: https://blockstream.info/api/block/956312
additional property: OTSRecordURL
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  value: https://artists.proofprofile.net/proofs/track/5oADwpLUg3ZQDxPrrfNoRc.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5oADwpLUg3ZQDxPrrfNoRc
additional property: OTSTimestamp
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additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88023ef93be27d82f3da7bcbd7e5301eae45097a1024bd4aeac918fd2b68a9d8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5oADwpLUg3ZQDxPrrfNoRc.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/5oADwpLUg3ZQDxPrrfNoRc.
  date published: 2026-07-02T05:09:12Z
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String Quartet No.14 in C Sharp Minor, Op.131: VI. Adagio quasi un poco andante
type: MusicRecording
duration: PT1M23S
duration ms: 83786
explicit: false
by artist: Ludwig van Beethoven
by artist: Alban Berg Quartett
in album: Beethoven: The Late String Quartets
  type: MusicAlbum
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isrc code: GBAYC8902986
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
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additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x77d0077fa8861e4ecc2f8c84cd76d353833133c05c1d432822731cac2b3138ef
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/956304
additional property: OTSRecordURL
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  value: https://artists.proofprofile.net/proofs/track/0vfPOu130lXmWd5tmGICvP.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0vfPOu130lXmWd5tmGICvP
additional property: OTSTimestamp
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additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d0077fa8861e4ecc2f8c84cd76d353833133c05c1d432822731cac2b3138ef. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0vfPOu130lXmWd5tmGICvP.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/0vfPOu130lXmWd5tmGICvP.
  date published: 2026-07-02T03:55:08Z
  text: {"copyright_id":"0x77d0077fa8861e4ecc2f8c84cd76d353833133c05c1d432822731cac2b3138ef","isrc":"GBAYC8902986","name":"String Quartet No.14 in C Sharp Minor, Op.131: VI. Adagio quasi un poco andante","registered_at":"2026-06-25T23:59:50Z","spotify_id":"0vfPOu130lXmWd5tmGICvP","type":"track"}

String Quartet No. 16 in F Major, Op.135: II. Vivace
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duration: PT3M20S
duration ms: 200000
explicit: false
by artist: Ludwig van Beethoven
by artist: Alban Berg Quartett
in album: Beethoven: The Late String Quartets
  type: MusicAlbum
  date published: 2005-09-13
isrc code: GBAYC8903049

String Quartet No. 13 in B Flat Major, Op.130: IV. Alla danza tedesca (Allegro assai)
type: MusicRecording
duration: PT2M57S
duration ms: 177640
explicit: false
by artist: Ludwig van Beethoven
by artist: Alban Berg Quartett
in album: Beethoven: The Late String Quartets
  type: MusicAlbum
  date published: 2005-09-13
isrc code: GBAYC8903007
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
  type: PropertyValue
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additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x03684c2cb1f362a04a831a8e81f8c42603de412c687c86627aa2b665d853f017
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/956312
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/17hxOmt1019BSQwKl3IFDg.json
additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/17hxOmt1019BSQwKl3IFDg
additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03684c2cb1f362a04a831a8e81f8c42603de412c687c86627aa2b665d853f017. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/17hxOmt1019BSQwKl3IFDg.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/17hxOmt1019BSQwKl3IFDg.
  date published: 2026-07-02T05:09:12Z
  text: {"copyright_id":"0x03684c2cb1f362a04a831a8e81f8c42603de412c687c86627aa2b665d853f017","isrc":"GBAYC8903007","name":"String Quartet No. 13 in B Flat Major, Op.130: IV. Alla danza tedesca (Allegro assai)","registered_at":"2026-06-24T16:22:14Z","spotify_id":"17hxOmt1019BSQwKl3IFDg","type":"track"}

String Quartet No.14 in C Sharp Minor, Op.131: VII. Allegro
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duration: PT6M33S
duration ms: 393653
explicit: false
by artist: Ludwig van Beethoven
by artist: Alban Berg Quartett
in album: Beethoven: The Late String Quartets
  type: MusicAlbum
  date published: 2005-09-13
isrc code: GBAYC8902987
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
  type: PropertyValue
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additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb4d0639d6a25e71119635afabd8cd97dde613681970b5e99fbd13be4ac3fb321
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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  value: https://blockstream.info/api/block/956304
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/4LoYyBBMREC5wL7k6aMzy6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4LoYyBBMREC5wL7k6aMzy6
additional property: OTSTimestamp
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  value: 2026-07-02T03:55:08Z
additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d0639d6a25e71119635afabd8cd97dde613681970b5e99fbd13be4ac3fb321. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4LoYyBBMREC5wL7k6aMzy6.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/4LoYyBBMREC5wL7k6aMzy6.
  date published: 2026-07-02T03:55:08Z
  text: {"copyright_id":"0xb4d0639d6a25e71119635afabd8cd97dde613681970b5e99fbd13be4ac3fb321","isrc":"GBAYC8902987","name":"String Quartet No.14 in C Sharp Minor, Op.131: VII. Allegro","registered_at":"2026-06-25T23:56:01Z","spotify_id":"4LoYyBBMREC5wL7k6aMzy6","type":"track"}

String Quartet No. 16 in F Major, Op.135: III. Lento assai e cantante tranquillo
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duration: PT8M27S
duration ms: 507800
explicit: false
by artist: Ludwig van Beethoven
by artist: Alban Berg Quartett
in album: Beethoven: The Late String Quartets
  type: MusicAlbum
  date published: 2005-09-13
isrc code: GBAYC8903050
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
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additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x28a6213831781a4347baca10b5ff0b42f703466df57fc94f4b481b13d175f79b
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/956304
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/2coI79I5DpYU4tRnXElBWl.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2coI79I5DpYU4tRnXElBWl
additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSCanonicalRecord
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  value: {"copyright_id":"0x28a6213831781a4347baca10b5ff0b42f703466df57fc94f4b481b13d175f79b","isrc":"GBAYC8903050","name":"String Quartet No. 16 in F Major, Op.135: III. Lento assai e cantante tranquillo","registered_at":"2026-06-27T07:33:18Z","spotify_id":"2coI79I5DpYU4tRnXElBWl","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a6213831781a4347baca10b5ff0b42f703466df57fc94f4b481b13d175f79b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2coI79I5DpYU4tRnXElBWl.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/2coI79I5DpYU4tRnXElBWl.
  date published: 2026-07-02T03:55:08Z
  text: {"copyright_id":"0x28a6213831781a4347baca10b5ff0b42f703466df57fc94f4b481b13d175f79b","isrc":"GBAYC8903050","name":"String Quartet No. 16 in F Major, Op.135: III. Lento assai e cantante tranquillo","registered_at":"2026-06-27T07:33:18Z","spotify_id":"2coI79I5DpYU4tRnXElBWl","type":"track"}

String Quartet No. 13 in B Flat Major, Op.130: V. Cavatina (Adagio molto espressivo)
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duration: PT6M34S
duration ms: 394760
explicit: false
by artist: Ludwig van Beethoven
by artist: Alban Berg Quartett
in album: Beethoven: The Late String Quartets
  type: MusicAlbum
  date published: 2005-09-13
isrc code: GBAYC8903008
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-23T10:15:22+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc4627b792fe55eb905b8f173952cc3b3f7cc1306dd5d79dddd6c2a0367980625
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/956304
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/2VaMpIScERLsG1a8OKku0K.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2VaMpIScERLsG1a8OKku0K
additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc4627b792fe55eb905b8f173952cc3b3f7cc1306dd5d79dddd6c2a0367980625","isrc":"GBAYC8903008","name":"String Quartet No. 13 in B Flat Major, Op.130: V. Cavatina (Adagio molto espressivo)","registered_at":"2026-06-23T10:15:22Z","spotify_id":"2VaMpIScERLsG1a8OKku0K","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4627b792fe55eb905b8f173952cc3b3f7cc1306dd5d79dddd6c2a0367980625. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2VaMpIScERLsG1a8OKku0K.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/2VaMpIScERLsG1a8OKku0K.
  date published: 2026-07-02T03:55:08Z
  text: {"copyright_id":"0xc4627b792fe55eb905b8f173952cc3b3f7cc1306dd5d79dddd6c2a0367980625","isrc":"GBAYC8903008","name":"String Quartet No. 13 in B Flat Major, Op.130: V. Cavatina (Adagio molto espressivo)","registered_at":"2026-06-23T10:15:22Z","spotify_id":"2VaMpIScERLsG1a8OKku0K","type":"track"}

String Quartet No. 16 in F Major, Op.135: IV. Grave ma non troppo tratto - Allegro
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duration: PT7M2S
duration ms: 422506
explicit: false
by artist: Ludwig van Beethoven
by artist: Alban Berg Quartett
in album: Beethoven: The Late String Quartets
  type: MusicAlbum
  date published: 2005-09-13
isrc code: GBAYC8903051

String Quartet No. 13 in B Flat Major, Op.130: VI. Finale (Allegro)
type: MusicRecording
duration: PT7M59S
duration ms: 479040
explicit: false
by artist: Ludwig van Beethoven
by artist: Alban Berg Quartett
in album: Beethoven: The Late String Quartets
  type: MusicAlbum
  date published: 2005-09-13
isrc code: GBAYC8903009
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
  type: PropertyValue
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additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x49759c4f560121151cfc3fa0f3d07d404866f35a0db7368ef24b53b65d9a28d5
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/956304
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/5BrEOa8NJvkMXU8Lhi2Ds2.json
additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49759c4f560121151cfc3fa0f3d07d404866f35a0db7368ef24b53b65d9a28d5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5BrEOa8NJvkMXU8Lhi2Ds2.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/5BrEOa8NJvkMXU8Lhi2Ds2.
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Tango Sensations
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Beethoven: String Quartets, Op. 18 (Live, 1989)
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Bartok: String Quartets 1-6
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String Quartet No. 6, Sz. 114 (2002 Digital Remaster): IV. Mesto
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Dvořák: String Quartets, Op. 51 & 105 (Live at Wiener Konzerthaus, 1999)
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Ravel & Debussy: String Quartets & Stravinsky: 3 Pieces, Concertino & Double Canon
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track: Ravel: String Quartet, M. 35: I. Allegro moderato - Très doux
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track: Stravinsky: 3 Pieces for String Quartet: No. 2
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track: Stravinsky: Double Canon for String Quartet "Raoul Dufy in memoriam"
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Mozart: String Quartets Nos 14-23, String Quintets Nos 3 & 4
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track: Mozart: String Quartet No. 20 in D Major, K. 499 "Hoffmeister": I. Allegretto
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track: Mozart: String Quartet No. 21 in D Major, K. 575 "Prussian Quartet No. 1": I. Allegretto
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track: Mozart: String Quartet No. 22 in B-Flat Major, K. 589 "Prussian Quartet No. 2": I. Allegro
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track: Mozart: String Quartet No. 23 in F Major, K. 590 "Prussian Quartet No. 3": I. Allegro moderato
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track: Mozart: String Quintet No. 3 in C Major, K. 515: I. Allegro
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track: Mozart: Piano Concerto No. 12 in A Major, K. 414: I. Allegro (Chamber Version)
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Beethoven: String Quartet No.11/Schubert: String Quartet No.13
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Schubert: Streichquartette Nos. 10 & 14 "Der Tod und das Mädchen"
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Schubert: Streichquartette 12 & 15
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Lutosławski: Streichquartett - Urbanner: Streichquartett No. 4 - Berio: Notturno
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Beethoven: String Quartets Nos. 14 & 15
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track: Haydn: String Quartet in D Minor, Op. 76 No. 2, Hob. III:76 "Fifths": II. Andante o più tosto allegretto
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  by artist: Alban Berg Quartett
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/956304
  additional property: OTSRecordURL
    type: PropertyValue
    value: https://artists.proofprofile.net/proofs/track/4jOQzZzKDtiUM4E4WWDmZ9.json
  additional property: OTSVerificationAPI
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    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4jOQzZzKDtiUM4E4WWDmZ9
  additional property: OTSTimestamp
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  additional property: OTSCanonicalRecord
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5435dc7751c0fc2de2dfbd149e32250c704595ec48f56f3d6f0c12f9d3bfdb6c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4jOQzZzKDtiUM4E4WWDmZ9.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/4jOQzZzKDtiUM4E4WWDmZ9.
    date published: 2026-07-02T03:55:08Z
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track: Haydn: String Quartet in D Minor, Op. 76 No. 2, Hob. III:76 "Fifths": III. Menuetto
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  by artist: Joseph Haydn
  by artist: Alban Berg Quartett
  in album: Haydn - String Quartets, Op 76 Nos 2-4
    type: MusicAlbum
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  additional property: CopyrightID
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  additional property: OTSRecordURL
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  additional property: OTSVerificationAPI
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    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/78YCUnTVcgIULtPZa2sPoE
  additional property: OTSTimestamp
    type: PropertyValue
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  additional property: OTSCanonicalRecord
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec83ef8f50a5f1436f92739df4bc6a277eedabb22873a3c7d7b120fbef56ce0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/78YCUnTVcgIULtPZa2sPoE.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/78YCUnTVcgIULtPZa2sPoE.
    date published: 2026-07-02T03:30:09Z
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track: Haydn: String Quartet in D Minor, Op. 76 No. 2, Hob. III:76 "Fifths": IV. Finale. Vivace assai
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  by artist: Alban Berg Quartett
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    type: MusicAlbum
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  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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    value: https://explorer.copyrightchains.com/tx/0xe0b6ff54737aff62e814c30c2d32fbc4e3fceb3b1b6da08b27780c45613cdeaf
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:55:08Z
  additional property: OTSCanonicalRecord
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b6ff54737aff62e814c30c2d32fbc4e3fceb3b1b6da08b27780c45613cdeaf. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0ffTvZo6XUAN7iKq5mvURO.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/0ffTvZo6XUAN7iKq5mvURO.
    date published: 2026-07-02T03:55:08Z
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track: Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": I. Allegro
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  by artist: Joseph Haydn
  by artist: Alban Berg Quartett
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  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSCanonicalRecord
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
track: Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": II. (a) Poco adagio, cantabile
track: Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": II. (b) Variation I
track: Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": II. (c) Variation II
track: Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": II. (d) Variation III
track: Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": II. (e) Variation IV
track: Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": III. Menuetto. Allegro
track: Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": IV. Finale. Presto
track: Haydn: String Quartet in B-Flat Major, Op. 76 No. 4, Hob. III:78 "Sunrise": I. Allegro con spirito
track: Haydn: String Quartet in B-Flat Major, Op. 76 No. 4, Hob. III:78 "Sunrise": II. Adagio
track: Haydn: String Quartet in B-Flat Major, Op. 76 No. 4, Hob. III:78 "Sunrise": III. Menuetto. Allegro
track: Haydn: String Quartet in B-Flat Major, Op. 76 No. 4, Hob. III:78 "Sunrise": IV. Finale. Allegro ma non troppo

Joseph Haydn
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Alban Berg Quartett
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Haydn - String Quartets, Op 76 Nos 2-4
type: MusicAlbum
date published: 1996-01-09

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CopyrightChainExplorerURL
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value: https://explorer.copyrightchains.com/tx/0x042963ff69040ac49f83927925f8a07ad308a69972ce519c0d7b515c4cd59e6f

OTSHash
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OTSBitcoinBlock
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OTSBitcoinBlockVerifyURL
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value: https://blockstream.info/api/block/956304

OTSRecordURL
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value: https://artists.proofprofile.net/proofs/track/0wbZjuKQRtTLVebRujClnU.json

OTSVerificationAPI
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value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0wbZjuKQRtTLVebRujClnU

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OTSCanonicalRecord
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value: {"copyright_id":"0x042963ff69040ac49f83927925f8a07ad308a69972ce519c0d7b515c4cd59e6f","isrc":"GBAYC9401705","name":"Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 \"Emperor\": I. Allegro","registered_at":"2026-06-19T14:12:20Z","spotify_id":"0wbZjuKQRtTLVebRujClnU","type":"track"}

OTSVerifyInstructions
type: PropertyValue
value: 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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042963ff69040ac49f83927925f8a07ad308a69972ce519c0d7b515c4cd59e6f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0wbZjuKQRtTLVebRujClnU.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/0wbZjuKQRtTLVebRujClnU.
date published: 2026-07-02T03:55:08Z
text: {"copyright_id":"0x042963ff69040ac49f83927925f8a07ad308a69972ce519c0d7b515c4cd59e6f","isrc":"GBAYC9401705","name":"Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 \"Emperor\": I. Allegro","registered_at":"2026-06-19T14:12:20Z","spotify_id":"0wbZjuKQRtTLVebRujClnU","type":"track"}

Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": II. (a) Poco adagio, cantabile
type: MusicRecording
duration: PT1M11S
duration ms: 71866
explicit: false
by artist: Joseph Haydn
by artist: Alban Berg Quartett
in album: Haydn - String Quartets, Op 76 Nos 2-4
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde91b86d13c2e6e0327747dfc62f4999b83a6fd183820ea47bcee4588eb8ca2c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6Bzm7y5jZmHhAPaV7w3NZU.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/6Bzm7y5jZmHhAPaV7w3NZU.
  date published: 2026-06-13T12:47:07Z
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Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": II. (b) Variation I
type: MusicRecording
duration: PT1M6S
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explicit: false
by artist: Joseph Haydn
by artist: Alban Berg Quartett
in album: Haydn - String Quartets, Op 76 Nos 2-4
  type: MusicAlbum
  date published: 1996-01-09
isrc code: GBAYC9401707
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
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  date published: 2026-07-02T03:30:09Z
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Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": II. (c) Variation II
type: MusicRecording
duration: PT1M10S
duration ms: 70173
explicit: false
by artist: Joseph Haydn
by artist: Alban Berg Quartett
in album: Haydn - String Quartets, Op 76 Nos 2-4
  type: MusicAlbum
  date published: 1996-01-09
isrc code: GBAYC9401708
additional property: CopyrightID
additional property: CopyrightStatus
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  value: registered
additional property: CopyrightRegisteredAt
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  value: 2026-06-21T05:30:19+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc243802a635b385f92f1d1809afce760d596340f07b3c0058ca480d79d0a0caa
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/956304
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/2Qky7Frin1r91tN6Cv6mCI.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2Qky7Frin1r91tN6Cv6mCI
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
additional property: OTSCanonicalRecord
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  value: {"copyright_id":"0xc243802a635b385f92f1d1809afce760d596340f07b3c0058ca480d79d0a0caa","isrc":"GBAYC9401708","name":"Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 \"Emperor\": II. (c) Variation II","registered_at":"2026-06-21T05:30:19Z","spotify_id":"2Qky7Frin1r91tN6Cv6mCI","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc243802a635b385f92f1d1809afce760d596340f07b3c0058ca480d79d0a0caa. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2Qky7Frin1r91tN6Cv6mCI.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/2Qky7Frin1r91tN6Cv6mCI.
  date published: 2026-07-02T03:55:08Z
  text: {"copyright_id":"0xc243802a635b385f92f1d1809afce760d596340f07b3c0058ca480d79d0a0caa","isrc":"GBAYC9401708","name":"Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 \"Emperor\": II. (c) Variation II","registered_at":"2026-06-21T05:30:19Z","spotify_id":"2Qky7Frin1r91tN6Cv6mCI","type":"track"}

Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": II. (d) Variation III
type: MusicRecording
duration: PT1M11S
duration ms: 71400
explicit: false
by artist: Joseph Haydn
by artist: Alban Berg Quartett
in album: Haydn - String Quartets, Op 76 Nos 2-4
  type: MusicAlbum
  date published: 1996-01-09
isrc code: GBAYC9401709
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
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additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbc2332898eca5e198eb514b68fc0b75db9689d9a74379499ab33886abfa0b86e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/956304
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/1NfaY1tRbjqLnX6E5oFVWf.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1NfaY1tRbjqLnX6E5oFVWf
additional property: OTSTimestamp
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  value: 2026-07-02T03:55:08Z
additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2332898eca5e198eb514b68fc0b75db9689d9a74379499ab33886abfa0b86e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1NfaY1tRbjqLnX6E5oFVWf.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/1NfaY1tRbjqLnX6E5oFVWf.
  date published: 2026-07-02T03:55:08Z
  text: {"copyright_id":"0xbc2332898eca5e198eb514b68fc0b75db9689d9a74379499ab33886abfa0b86e","isrc":"GBAYC9401709","name":"Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 \"Emperor\": II. (d) Variation III","registered_at":"2026-06-21T05:27:17Z","spotify_id":"1NfaY1tRbjqLnX6E5oFVWf","type":"track"}

Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": II. (e) Variation IV
type: MusicRecording
duration: PT1M45S
duration ms: 105533
explicit: false
by artist: Joseph Haydn
by artist: Alban Berg Quartett
in album: Haydn - String Quartets, Op 76 Nos 2-4
  type: MusicAlbum
  date published: 1996-01-09
isrc code: GBAYC9401710
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-20T08:28:45+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8d263805f216f9ead2d50a5facb3dd5add1db534354170ebef4798f73e573775
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/956304
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/67i5B3Pg0ydTM0dBqZibS4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/67i5B3Pg0ydTM0dBqZibS4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
additional property: OTSCanonicalRecord
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  value: {"copyright_id":"0x8d263805f216f9ead2d50a5facb3dd5add1db534354170ebef4798f73e573775","isrc":"GBAYC9401710","name":"Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 \"Emperor\": II. (e) Variation IV","registered_at":"2026-06-20T08:28:45Z","spotify_id":"67i5B3Pg0ydTM0dBqZibS4","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d263805f216f9ead2d50a5facb3dd5add1db534354170ebef4798f73e573775. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/67i5B3Pg0ydTM0dBqZibS4.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/67i5B3Pg0ydTM0dBqZibS4.
  date published: 2026-07-02T03:55:08Z
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Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": III. Menuetto. Allegro
type: MusicRecording
duration: PT4M26S
duration ms: 266026
explicit: false
by artist: Joseph Haydn
by artist: Alban Berg Quartett
in album: Haydn - String Quartets, Op 76 Nos 2-4
  type: MusicAlbum
  date published: 1996-01-09
isrc code: GBAYC9401711
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-21T05:36:56+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc379eb0176acd740775eeab20b3d78b42d5be7d81c1875d83f97eeaff4cd3849
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/956304
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/6QykRGwauXyAh0ukVHauG9.json
additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6QykRGwauXyAh0ukVHauG9
additional property: OTSTimestamp
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additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc379eb0176acd740775eeab20b3d78b42d5be7d81c1875d83f97eeaff4cd3849. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6QykRGwauXyAh0ukVHauG9.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/6QykRGwauXyAh0ukVHauG9.
  date published: 2026-07-02T03:55:08Z
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Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": IV. Finale. Presto
type: MusicRecording
duration: PT5M47S
duration ms: 347333
explicit: false
by artist: Joseph Haydn
by artist: Alban Berg Quartett
in album: Haydn - String Quartets, Op 76 Nos 2-4
  type: MusicAlbum
  date published: 1996-01-09
isrc code: GBAYC9401712
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
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additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb3db4244426d4341c9a8624f5f23163e53ff7caaadd8d389a6e8ca440ae704d5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/956304
additional property: OTSRecordURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
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additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3db4244426d4341c9a8624f5f23163e53ff7caaadd8d389a6e8ca440ae704d5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/73XwWLOzMy1eoARqulDFgo.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/73XwWLOzMy1eoARqulDFgo.
  date published: 2026-07-02T03:55:08Z
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Haydn: String Quartet in B-Flat Major, Op. 76 No. 4, Hob. III:78 "Sunrise": I. Allegro con spirito
type: MusicRecording
duration: PT8M33S
duration ms: 513266
explicit: false
by artist: Joseph Haydn
by artist: Alban Berg Quartett
in album: Haydn - String Quartets, Op 76 Nos 2-4
  type: MusicAlbum
  date published: 1996-01-09
isrc code: GBAYC9401691
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-21T05:33:29+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x68d91f9ce24c960d094325be67e98cf225c89b58942ae5032104848a5a6d8fa6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/956304
additional property: OTSRecordURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3AfaWc1IqsEaUgBTdMnbra
additional property: OTSTimestamp
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  value: 2026-07-02T03:55:08Z
additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d91f9ce24c960d094325be67e98cf225c89b58942ae5032104848a5a6d8fa6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3AfaWc1IqsEaUgBTdMnbra.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/3AfaWc1IqsEaUgBTdMnbra.
  date published: 2026-07-02T03:55:08Z
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Haydn: String Quartet in B-Flat Major, Op. 76 No. 4, Hob. III:78 "Sunrise": II. Adagio
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duration: PT5M51S
duration ms: 351106
explicit: false
by artist: Joseph Haydn
by artist: Alban Berg Quartett
in album: Haydn - String Quartets, Op 76 Nos 2-4
  type: MusicAlbum
  date published: 1996-01-09
isrc code: GBAYC9401692
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSCanonicalRecord
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Haydn: String Quartet in B-Flat Major, Op. 76 No. 4, Hob. III:78 "Sunrise": IV. Finale. Allegro ma non troppo
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subject of: OpenTimestamps Proof of Existence
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Dvořák & Schumann: Piano Quintets
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Beethoven: String Quartets, Op. 95 "Serioso", 130 & 133
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Haydn: String Quartets, Op. 77 - Berio: Notturno (Quartetto III)
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Janácek: String Quartets
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J. Strauss II/Lanner - Waltzes
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Berg - Chamber Works
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Rihm & Schnittke: String Quartets No. 4 (Live at Vienna Konzerthaus, 1990)
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Beethoven: Complete String Quartets, Vol. 2 (Live at Vienna Konzerthaus, 1989)
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Beethoven: String Quartet No. 15 in A Minor, Op. 132: V. Finale. Allegro appasionato (Live at Konzerthaus, Wien, 1989)
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Beethoven: Grosse Fuge in B-Flat Major, Op. 133 (Live at Konzerthaus, Wien, 1989)
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Beethoven: String Quartet No. 8 in E Minor, Op. 59 No. 2 "Razumovsky": I. Allegro (Live at Konzerthaus, Wien, VI.1989)
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Beethoven: String Quartet No. 8 in E Minor, Op. 59 No. 2 "Razumovsky": III. Allegretto (Live at Konzerthaus, Wien, VI.1989)
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Beethoven: String Quartet No. 6 in B-Flat Major, Op. 18 No. 6: I. Allegro con brio (Live at Konzerthaus, Wien, VI.1989)
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Beethoven: String Quartet No. 6 in B-Flat Major, Op. 18 No. 6: II. Adagio ma non troppo (Live at Konzerthaus, Wien, VI.1989)
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Beethoven: String Quartet No. 6 in B-Flat Major, Op. 18 No. 6: III. Scherzo. Allegro (Live at Konzerthaus, Wien, VI.1989)
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Beethoven: String Quartet No. 16 in F Major, Op. 135: I. Allegretto (Live at Konzerthaus, Wien, 1989)
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Beethoven: String Quartet No. 16 in F Major, Op. 135: II. Vivace (Live at Konzerthaus, Wien, 1989)
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Beethoven: String Quartet No. 16 in F Major, Op. 135: III. Lento assai, cantante tranquillo (Live at Konzerthaus, Wien, 1989)
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Beethoven: String Quartet No. 16 in F Major, Op. 135: IV. Grave ma non troppo tratto - Allegro (Live at Konzerthaus, Wien, 1989)
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Beethoven: String Quartet No. 9 in C Major, Op. 59 No. 3 "Razumovsky": I. Introduzione. Andante con moto - Allegro vivace (Live at Konzerthaus, Wien, VI.1989)
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Beethoven: String Quartet No. 9 in C Major, Op. 59 No. 3 "Razumovsky": II. Andante con moto quasi allegretto (Live at Konzerthaus, Wien, VI.1989)
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Beethoven: String Quartet No. 9 in C Major, Op. 59 No. 3 "Razumovsky": III. Menuetto. Grazioso (Live at Konzerthaus, Wien, VI.1989)
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Beethoven: String Quartet No. 9 in C Major, Op. 59 No. 3 "Razumovsky": IV. Allegro molto (Live at Konzerthaus, Wien, VI.1989)
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Speech by Günter Pichler (Live at Konzerthaus, Wien, VI.1989)
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Beethoven: String Quartet No. 13 in B-Flat Major, Op. 130: V. Cavatina. Adagio molto espressivo (Live at Konzerthaus, Wien, VI.1989)
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Beethoven: Complete String Quartets, Vol. 1 (Live at Vienna Konzerthaus, 1989)
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Beethoven: String Quartet No. 3 in D Major, Op. 18 No. 3: II. Andante con moto (Live at Konzerthaus, Wien, VI.1989)
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Beethoven: String Quartet No. 3 in D Major, Op. 18 No. 3: III. Allegro (Live at Konzerthaus, Wien, VI.1989)
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Beethoven: String Quartet No. 3 in D Major, Op. 18 No. 3: IV. Presto (Live at Konzerthaus, Wien, VI.1989)
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Beethoven: String Quartet No. 13 in B-Flat Major, Op. 130: I. Adagio ma non troppo - Allegro (Live at Konzerthaus, Wien, 1989)
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Beethoven: String Quartet No. 13 in B-Flat Major, Op. 130: II. Presto (Live at Konzerthaus, Wien, 1989)
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Beethoven: String Quartet No. 13 in B-Flat Major, Op. 130: III. Andante con moto ma non troppo (Live at Konzerthaus, Wien, 1989)
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Beethoven: String Quartet No. 13 in B-Flat Major, Op. 130: VI. Finale. Allegro (Live at Konzerthaus, Wien, 1989)
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Beethoven: String Quartet No. 12 in E-Flat Major, Op. 127: I. Maestoso - Allegro (Live at Konzerthaus, Wien, 1989)
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Beethoven: String Quartet No. 12 in E-Flat Major, Op. 127: IV. Finale (Live at Konzerthaus, Wien, 1989)
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Beethoven: String Quartet No. 7 in F Major, Op. 59 No. 1 "Razumovsky": I. Allegro (Live at Konzerthaus, Wien, VI.1989)
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Beethoven: String Quartet No. 7 in F Major, Op. 59 No. 1 "Razumovsky": II. Allegretto vivace e sempre scherzando (Live at Konzerthaus, Wien, VI.1989)
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Beethoven: String Quartet No. 7 in F Major, Op. 59 No. 1 "Razumovsky": III. Adagio molto e mesto (Live at Konzerthaus, Wien, VI.1989)
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Beethoven: String Quartet No. 7 in F Major, Op. 59 No. 1 "Razumovsky": IV. Thème russe. Allegro (Live at Konzerthaus, Wien, VI.1989)
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String Quartet No.12 in E Flat, Op.127: I. Maestoso - Allegro
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subject of: OpenTimestamps Proof of Existence
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String Quartet No.12 in E Flat, Op.127: II. Adagio ma non troppo, molto cantabile
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subject of: OpenTimestamps Proof of Existence
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Grosse Fuge in B Flat Major, Op.133
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subject of: OpenTimestamps Proof of Existence
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String Quartet No.14 in C Sharp Minor, Op.131: I. Adagio ma non troppo e molto espressivo
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subject of: OpenTimestamps Proof of Existence
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String Quartet No.12 in E Flat, Op.127: III. Scherzando vivace
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subject of: OpenTimestamps Proof of Existence
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String Quartet No. 13 in B Flat Major, Op.130: I. Adagio ma non troppo - Allegro
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subject of: OpenTimestamps Proof of Existence
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String Quartet No. 13 in B Flat Major, Op.130: V. Cavatina (Adagio molto espressivo)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
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String Quartet No.14 in C Sharp Minor, Op.131: V. Presto
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duration: PT5M25S
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explicit: false
by artist: Ludwig van Beethoven
by artist: Alban Berg Quartett
in album: Beethoven: The Late String Quartets
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isrc code: GBAYC8902985
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additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
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  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7802f95a4789e871836ff4bf7f88748061e4f08fc3f4c8d83a12e2f51e0736f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2kUjXYpVidB1QYCwwovApw.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/2kUjXYpVidB1QYCwwovApw.
  date published: 2026-07-02T03:55:08Z
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String Quartet No.15 in A Minor, Op.132: III. Molto adagio
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duration: PT15M21S
duration ms: 921893
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by artist: Ludwig van Beethoven
by artist: Alban Berg Quartett
in album: Beethoven: The Late String Quartets
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isrc code: GBAYC8903033
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
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  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04deef1025949bdf4eb83db74609f1a22fcc9519338e83f39771f47f54347e11. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1uKlIWVsMIvglgtS600I9c.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/1uKlIWVsMIvglgtS600I9c.
  date published: 2026-07-02T05:09:12Z
  text: {"copyright_id":"0x04deef1025949bdf4eb83db74609f1a22fcc9519338e83f39771f47f54347e11","isrc":"GBAYC8903033","name":"String Quartet No.15 in A Minor, Op.132: III. Molto adagio","registered_at":"2026-06-24T16:22:33Z","spotify_id":"1uKlIWVsMIvglgtS600I9c","type":"track"}

String Quartet No.12 in E Flat, Op.127: IV. Finale
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duration: PT7M1S
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by artist: Ludwig van Beethoven
by artist: Alban Berg Quartett
in album: Beethoven: The Late String Quartets
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isrc code: GBAYC8903014
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
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  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
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  date published: 2026-07-02T03:55:08Z
  text: {"copyright_id":"0xb76d4c933173560e1de71890176c0e13ff7cafe4952863e866b6f98c0beaa91f","isrc":"GBAYC8903014","name":"String Quartet No.12 in E Flat, Op.127: IV. Finale","registered_at":"2026-06-23T09:59:34Z","spotify_id":"2gXLkUWuip0p7Fzu7GKmI9","type":"track"}

String Quartet No. 13 in B Flat Major, Op.130: II. Presto
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duration: PT1M59S
duration ms: 119386
explicit: false
by artist: Ludwig van Beethoven
by artist: Alban Berg Quartett
in album: Beethoven: The Late String Quartets
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isrc code: GBAYC8903005
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
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  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
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  date published: 2026-07-02T05:09:12Z
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String Quartet No. 13 in B Flat Major, Op.130: III. Andante con moto, ma non troppo
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duration: PT6M36S
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explicit: false
by artist: Ludwig van Beethoven
by artist: Alban Berg Quartett
in album: Beethoven: The Late String Quartets
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isrc code: GBAYC8903006
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
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  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88023ef93be27d82f3da7bcbd7e5301eae45097a1024bd4aeac918fd2b68a9d8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5oADwpLUg3ZQDxPrrfNoRc.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/5oADwpLUg3ZQDxPrrfNoRc.
  date published: 2026-07-02T05:09:12Z
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String Quartet No. 13 in B Flat Major, Op.130: IV. Alla danza tedesca (Allegro assai)
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duration ms: 177640
explicit: false
by artist: Ludwig van Beethoven
by artist: Alban Berg Quartett
in album: Beethoven: The Late String Quartets
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isrc code: GBAYC8903007
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03684c2cb1f362a04a831a8e81f8c42603de412c687c86627aa2b665d853f017. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/17hxOmt1019BSQwKl3IFDg.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/17hxOmt1019BSQwKl3IFDg.
  date published: 2026-07-02T05:09:12Z
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String Quartet No.14 in C Sharp Minor, Op.131: IV. Andante ma non troppo e molto cantabile
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explicit: false
by artist: Ludwig van Beethoven
by artist: Alban Berg Quartett
in album: Beethoven: The Late String Quartets
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  date published: 2005-09-13
isrc code: GBAYC8902984
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
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String Quartet No.15 in A Minor, Op.132: I. Assai sostenuto - Allegro
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by artist: Ludwig van Beethoven
by artist: Alban Berg Quartett
in album: Beethoven: The Late String Quartets
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
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  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137b737a6782bfbd336a3fc594f1d9507271f5f62cf4948e0240db939ca8083b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4jqW889XnFwiCrO7Ty2NhT.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/4jqW889XnFwiCrO7Ty2NhT.
  date published: 2026-07-02T03:55:08Z
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String Quartet No. 13 in B Flat Major, Op.130: VI. Finale (Allegro)
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duration: PT7M59S
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by artist: Ludwig van Beethoven
by artist: Alban Berg Quartett
in album: Beethoven: The Late String Quartets
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: OTSHash
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
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  date published: 2026-07-02T03:55:08Z
  text: {"copyright_id":"0x49759c4f560121151cfc3fa0f3d07d404866f35a0db7368ef24b53b65d9a28d5","isrc":"GBAYC8903009","name":"String Quartet No. 13 in B Flat Major, Op.130: VI. Finale (Allegro)","registered_at":"2026-06-25T09:09:53Z","spotify_id":"5BrEOa8NJvkMXU8Lhi2Ds2","type":"track"}

String Quartet No.14 in C Sharp Minor, Op.131: II. Allegro molto vivace
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by artist: Ludwig van Beethoven
by artist: Alban Berg Quartett
in album: Beethoven: The Late String Quartets
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additional property: CopyrightID
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additional property: CopyrightRegisteredAt
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additional property: OTSHash
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
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  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-02T03:55:08Z
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String Quartet No.14 in C Sharp Minor, Op.131: III. Andante moderato
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by artist: Ludwig van Beethoven
by artist: Alban Berg Quartett
in album: Beethoven: The Late String Quartets
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-02T05:09:12Z
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String Quartet No.14 in C Sharp Minor, Op.131: VI. Adagio quasi un poco andante
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by artist: Alban Berg Quartett
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d0077fa8861e4ecc2f8c84cd76d353833133c05c1d432822731cac2b3138ef. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0vfPOu130lXmWd5tmGICvP.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/0vfPOu130lXmWd5tmGICvP.
  date published: 2026-07-02T03:55:08Z
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String Quartet No.14 in C Sharp Minor, Op.131: VII. Allegro
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additional property: CopyrightID
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additional property: CopyrightRegisteredAt
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
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