Amadeus Quartet
type: MusicGroup
genre: chamber music
genre: classical
description: The Amadeus Quartet was a string quartet founded in 1947 and disbanded in 1987, having retained its founding members throughout its history. Noted for its smooth, sophisticated style, its seamless en
popularity: 29
followers: 15676
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album: Brahms: String Quartet, Quintet & Sextet
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  date published: 2013-09-20
album: Brahms: Complete String Quartets, Quintets & Sextets
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  date published: 2003-01-01
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    genre: classical
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    genre: classical
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  track: String Quintet No. 1 in F Major, Op. 88: I. Allegro non troppo, ma con brio
  track: Clarinet Trio in A Minor, Op. 114: I. Allegro
  track: String Sextet No. 1 in B Flat Major, Op. 18: I. Allegro ma non troppo
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  track: String Quintet No. 1 in F Major, Op. 88: II. Grave ed appassionato - Allegretto vivace - Tempo I - Presto
  track: Clarinet Trio in A Minor, Op. 114: II. Adagio
  track: String Sextet No. 1 in B-Flat Major, Op. 18: II. Andante ma moderato
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  track: String Quartet No. 3 in B Flat Major, Op. 67: III. Agitato (Allegretto non troppo)
  track: String Quintet No. 1 in F Major, Op. 88: III. Allegro energico
  track: Clarinet Trio in A Minor, Op. 114: III. Andante grazioso
  track: String Sextet No. 1 in B Flat Major, Op. 18: III. Scherzo (Allegro molto)
  track: String Quartet No. 1 in C Minor, Op. 51, No. 1: IV. Allegro
  track: String Quartet No. 3 in B Flat Major, Op. 67: IV. Poco allegretto con variazioni - Doppio movimento
  track: String Quintet No. 2 in G Major, Op. 111: I. Allegro non troppo, ma con brio
  track: Clarinet Trio in A Minor, Op. 114: IV. Allegro
  track: String Sextet No. 1 in B Flat Major, Op. 18: IV. Rondo (Poco allegretto e grazioso)
  track: String Quartet No. 2 in A Minor, Op. 51, No. 2: I. Allegro non troppo
  track: Piano Quintet in F Minor, Op. 34: I. Allegro non troppo
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  track: Clarinet Quintet in B Minor, Op. 115: I. Allegro
  track: String Sextet No. 2 in G Major, Op. 36: I. Allegro non troppo
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  track: String Quintet No. 2 in G Major, Op. 111: IV. Vivace ma non troppo presto
  track: Clarinet Quintet in B Minor, Op. 115: III. Andantino - Presto non assai, ma con sentimento
  track: String Sextet No. 2 in G Major, Op. 36: III. Poco adagio
  track: String Quartet No. 2 in A Minor, Op. 51, No. 2: IV. Finale (Allegro non assai - Più vivace)
  track: Piano Quintet in F Minor, Op. 34: IV. Finale (poco sostenuto - Allegro non troppo)
  track: Clarinet Quintet in B Minor, Op. 115: IV. Con moto
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album: Do You Want? - String Quintet
album: Do You Want? - String Quartet
album: Mozart's Art - Vol.1 (Remastered 2023)
album: Mozart's Art - Vol. 2 (Remastered 2023)
album: Mozart: Quartet KV 464 & Quintet KV 515
album: Amadeus Quartet
album: Amadeus Quartet plays Brahms
album: Mozart's Art - Vol. 2
album: Mozart: In Love with Mozart, Vol. 1
album: Mozart's Art - Vol.1
album: Beethoven: The String Quartets in under 10 minutes
album: Beethoven: String Quartets
album: Amadeus Quartet 1956-1961: Haydn, Beethoven & Dvořák (Remastered 2018)
album: Mozart & Beethoven: String Quartets (Live)
album: Schubert: String Quartet No.13 In A Minor, D. 804 "Rosamunde"; String Quartet No.15 In G, D. 887; String Quartet No.12 In C Minor, D.703 - "Quartettsatz"
album: Schubert: String Quartet No.10 In E Flat Major, D.87; String Quartet No. 8 In B Flat Major, D.112 (Op. Post. 168); String Quartet No.9, D.173
album: Mozart: String Quartet No.17 In B Flat, K.458 -"The Hunt" / Schubert: String Quartet No.10 In E Flat Major, D.87; String Quartet No. 8 In B Flat Major, D.112 (Op. Post. 168) / Mendelssohn: Fo
album: Britten: String Quartet No.3, Op.94 (Live)
album: Haydn: String Quartets (The RIAS Amadeus Quartet Recordings, Vol. VI)
album: Romanticism (The RIAS Amadeus Quartet Recordings, Vol. V)
album: Modernism (The RIAS Amadeus Quartet Recordings, Vol. IV)
album: Beethoven's String Quartets
album: Brahms & Dvořák: String Quartets
album: Mozart: String Quartets
album: The RIAS Amadeus Quartet Mozart Recordings (Mozart: String Quartets, String Quintets & Clarinet Quintet)
album: Tippett: String Quartet No. 2 - Rainier: String Quartet No. 1
album: Mozart, Beethoven & Bruckner: String Quintets
album: Beethoven, Haydn & Felix Mendelssohn: Works for String Quartet
album: Bartók: String Quartets Nos. 4 & 6 - Seiber: String Quartet No. 3
album: Schubert: Piano Quintet, Hephzibah Menuhin vs. Christoph Eschenbach
album: Schubert: String Quartet No. 14 "Death and the Maiden", Juilliard Quartet vs Amadeus Quartet (Compare 2 Versions)
album: The RIAS Amadeus Quartet Schubert Recordings, Vol. 2
album: Schubert: Quintet in A Major, D. 667 Trout (Remastered)
album: Beethoven: String Quartets (The RIAS Amadeus Quartet Recordings, Vol. I)
album: Verdi / Tchaikovsky / Smetana: String Quartets
album: Mozart: String Quartet in C-Major K. 465 & String Quartet in D-Major K. 499 'Hoffmeister' (History Records - Classical Edition 25 - Digitally Remastered 2011)
album: Mozart: String Quartet in B Flat Major K. 458 'The Hunt' & String Quartet in A Major K. 464 (History Records - Classical Edition 19 - Original Recordings Digitally Remastered 2011 in Stereo)
album: Beethoven, Vol. 10 - String Quartets 01-11
album: Haydn: Streichquartette (Eloquence)
album: The art of dance in music vol.1
album: The art of dance in music (Remastered 2014)
album: Finest Recordings - Schbert's "Death and the Maiden": A String Quartet
album: Finest Recordings - Beethoven's String Quartet No 7

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String Quintet No. 1 in F Major, Op. 88: I. Allegro non troppo, ma con brio
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  date published: 2026-07-30T20:35:49Z
audio: String Quintet No. 1 in F Major, Op. 88: I. Allegro non troppo, ma con brio
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Clarinet Trio in A Minor, Op. 114: I. Allegro
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  date published: 2026-07-08T03:20:19Z
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String Sextet No. 1 in B Flat Major, Op. 18: I. Allegro ma non troppo
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by artist: Amadeus Quartet
by artist: Cecil Aronowitz
by artist: William Pleeth
in album: Brahms: Complete String Quartets, Quintets & Sextets
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  date published: 2003-01-01
popularity: 4
genre: classical
genre: german-romanticism
genre: classical-piano
genre: late-romantic-era
genre: chamber-music
genre: orchestral
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T07:28:30Z
audio: String Sextet No. 1 in B Flat Major, Op. 18: I. Allegro ma non troppo
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String Quartet No. 1 in C Minor, Op. 51, No. 1: II. Romanze (Poco adagio)
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by artist: Amadeus Quartet
in album: Brahms: Complete String Quartets, Quintets & Sextets
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  date published: 2003-01-01
popularity: 4
genre: classical
genre: german-romanticism
genre: classical-piano
genre: late-romantic-era
genre: chamber-music
genre: orchestral
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: String Quartet No. 1 in C Minor, Op. 51, No. 1: II. Romanze (Poco adagio)
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String Quartet No. 3 in B Flat Major, Op. 67: II. Andante
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duration: PT7M25S
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by artist: Johannes Brahms
by artist: Amadeus Quartet
in album: Brahms: Complete String Quartets, Quintets & Sextets
  type: MusicAlbum
  date published: 2003-01-01
popularity: 3
genre: classical
genre: german-romanticism
genre: classical-piano
genre: late-romantic-era
genre: chamber-music
genre: orchestral
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T18:23:33Z
audio: String Quartet No. 3 in B Flat Major, Op. 67: II. Andante
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String Quintet No. 1 in F Major, Op. 88: II. Grave ed appassionato - Allegretto vivace - Tempo I - Presto
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by artist: Cecil Aronowitz
by artist: Amadeus Quartet
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popularity: 2
genre: classical
genre: german-romanticism
genre: classical-piano
genre: late-romantic-era
genre: chamber-music
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: String Quintet No. 1 in F Major, Op. 88: II. Grave ed appassionato - Allegretto vivace - Tempo I - Presto
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Clarinet Trio in A Minor, Op. 114: II. Adagio
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duration: PT8M15S
duration ms: 495706
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by artist: Johannes Brahms
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by artist: Georg Donderer
in album: Brahms: Complete String Quartets, Quintets & Sextets
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  date published: 2003-01-01
popularity: 2
genre: classical
genre: german-romanticism
genre: classical-piano
genre: late-romantic-era
genre: chamber-music
genre: orchestral
isrc code: DEF056802312
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Clarinet Trio in A Minor, Op. 114: II. Adagio
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String Sextet No. 1 in B-Flat Major, Op. 18: II. Andante ma moderato
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by artist: Amadeus Quartet
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by artist: William Pleeth
in album: Brahms: Complete String Quartets, Quintets & Sextets
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  date published: 2003-01-01
popularity: 4
genre: classical
genre: german-romanticism
genre: classical-piano
genre: late-romantic-era
genre: chamber-music
genre: orchestral
isrc code: DEF056601351
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-30T08:30:10Z
audio: String Sextet No. 1 in B-Flat Major, Op. 18: II. Andante ma moderato
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String Quartet No. 1 in C Minor, Op. 51, No. 1: III. Allegretto molto moderato e comodo - Un poco più animato
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  date published: 2026-07-30T14:36:16Z
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String Quartet No. 3 in B Flat Major, Op. 67: III. Agitato (Allegretto non troppo)
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subject of: OpenTimestamps Proof of Existence
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String Quintet No. 1 in F Major, Op. 88: III. Allegro energico
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Clarinet Trio in A Minor, Op. 114: III. Andante grazioso
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T20:35:49Z
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String Sextet No. 1 in B Flat Major, Op. 18: III. Scherzo (Allegro molto)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T06:58:00Z
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String Quartet No. 1 in C Minor, Op. 51, No. 1: IV. Allegro
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subject of: OpenTimestamps Proof of Existence
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String Quartet No. 3 in B Flat Major, Op. 67: IV. Poco allegretto con variazioni - Doppio movimento
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T03:13:37Z
audio: String Quartet No. 3 in B Flat Major, Op. 67: IV. Poco allegretto con variazioni - Doppio movimento
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String Quintet No. 2 in G Major, Op. 111: I. Allegro non troppo, ma con brio
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duration: PT9M47S
duration ms: 587586
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by artist: Johannes Brahms
by artist: Cecil Aronowitz
by artist: Amadeus Quartet
in album: Brahms: Complete String Quartets, Quintets & Sextets
  type: MusicAlbum
  date published: 2003-01-01
popularity: 3
genre: classical
genre: german-romanticism
genre: classical-piano
genre: late-romantic-era
genre: chamber-music
genre: orchestral
isrc code: DEF056702011
additional property: CopyrightID
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T08:04:30Z
audio: String Quintet No. 2 in G Major, Op. 111: I. Allegro non troppo, ma con brio
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Clarinet Trio in A Minor, Op. 114: IV. Allegro
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duration: PT4M33S
duration ms: 273346
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by artist: Johannes Brahms
by artist: Christoph Eschenbach
by artist: Karl Leister
by artist: Georg Donderer
in album: Brahms: Complete String Quartets, Quintets & Sextets
  type: MusicAlbum
  date published: 2003-01-01
popularity: 2
genre: classical
genre: german-romanticism
genre: classical-piano
genre: late-romantic-era
genre: chamber-music
genre: orchestral
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3697bbafff5fb8f0156300ae994ce36ad0f803be0635263b02b1879eb849fc1f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056802314.
  date published: 2026-07-08T03:20:19Z
audio: Clarinet Trio in A Minor, Op. 114: IV. Allegro
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String Sextet No. 1 in B Flat Major, Op. 18: IV. Rondo (Poco allegretto e grazioso)
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duration: PT9M39S
duration ms: 579520
explicit: false
by artist: Johannes Brahms
by artist: Amadeus Quartet
by artist: Cecil Aronowitz
by artist: William Pleeth
in album: Brahms: Complete String Quartets, Quintets & Sextets
  type: MusicAlbum
  date published: 2003-01-01
popularity: 2
genre: classical
genre: german-romanticism
genre: classical-piano
genre: late-romantic-era
genre: chamber-music
genre: orchestral
isrc code: DEF056601354
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: String Sextet No. 1 in B Flat Major, Op. 18: IV. Rondo (Poco allegretto e grazioso)
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String Quartet No. 2 in A Minor, Op. 51, No. 2: I. Allegro non troppo
type: MusicRecording
duration: PT9M38S
duration ms: 578000
explicit: false
by artist: Johannes Brahms
by artist: Amadeus Quartet
in album: Brahms: Complete String Quartets, Quintets & Sextets
  type: MusicAlbum
  date published: 2003-01-01
popularity: 4
genre: classical
genre: german-romanticism
genre: classical-piano
genre: late-romantic-era
genre: chamber-music
genre: orchestral
isrc code: DEF055901471
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additional property: CopyrightStatus
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-08T03:20:19Z
audio: String Quartet No. 2 in A Minor, Op. 51, No. 2: I. Allegro non troppo
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Piano Quintet in F Minor, Op. 34: I. Allegro non troppo
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duration: PT14M52S
duration ms: 892560
explicit: false
by artist: Johannes Brahms
by artist: Amadeus Quartet
by artist: Christoph Eschenbach
in album: Brahms: Complete String Quartets, Quintets & Sextets
  type: MusicAlbum
  date published: 2003-01-01
popularity: 3
genre: classical
genre: german-romanticism
genre: classical-piano
genre: late-romantic-era
genre: chamber-music
genre: orchestral
isrc code: DEF056802501
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: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc3af934711f1d0ceab22111b0dcfb5470d118d0ace61ad6ee748069ab1c07a. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056802501.
  date published: 2026-07-30T16:10:47Z
audio: Piano Quintet in F Minor, Op. 34: I. Allegro non troppo
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String Quintet No. 2 in G Major, Op. 111: II. Adagio
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duration: PT5M38S
duration ms: 338280
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by artist: Johannes Brahms
by artist: Cecil Aronowitz
by artist: Amadeus Quartet
in album: Brahms: Complete String Quartets, Quintets & Sextets
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  date published: 2003-01-01
popularity: 3
genre: classical
genre: german-romanticism
genre: classical-piano
genre: late-romantic-era
genre: chamber-music
genre: orchestral
isrc code: DEF056702012
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bf526c665e7576c151a24282d61801ce9ff5fb421b0bbb649938d0477252d9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056702012.
  date published: 2026-07-08T03:20:19Z
audio: String Quintet No. 2 in G Major, Op. 111: II. Adagio
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Clarinet Quintet in B Minor, Op. 115: I. Allegro
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T10:42:33Z
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String Sextet No. 2 in G Major, Op. 36: I. Allegro non troppo
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T00:26:26Z
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String Quartet No. 2 in A Minor, Op. 51, No. 2: II. Andante moderato
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T02:05:19Z
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Piano Quintet in F Minor, Op. 34: II. Andante, un poco adagio
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T18:46:00Z
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String Quintet No. 2 in G Major, Op. 111: III. Un poco allegretto
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T05:17:02Z
audio: String Quintet No. 2 in G Major, Op. 111: III. Un poco allegretto
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Clarinet Quintet in B Minor, Op. 115: II. Adagio
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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String Sextet No. 2 in G Major, Op. 36: II. Scherzo (Allegro non troppo)
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T06:58:00Z
audio: String Sextet No. 2 in G Major, Op. 36: II. Scherzo (Allegro non troppo)
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String Quartet No. 2 in A Minor, Op. 51, No. 2: III. Quasi minuetto, moderato - Allegretto vivace
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duration ms: 326983
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by artist: Johannes Brahms
by artist: Amadeus Quartet
in album: Brahms: Complete String Quartets, Quintets & Sextets
  type: MusicAlbum
  date published: 2003-01-01
popularity: 2
genre: classical
genre: german-romanticism
genre: classical-piano
genre: late-romantic-era
genre: chamber-music
genre: orchestral
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T02:19:15Z
audio: String Quartet No. 2 in A Minor, Op. 51, No. 2: III. Quasi minuetto, moderato - Allegretto vivace
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Piano Quintet in F Minor, Op. 34: III. Scherzo (Allegro)
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duration: PT7M23S
duration ms: 443133
explicit: false
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by artist: Amadeus Quartet
by artist: Christoph Eschenbach
in album: Brahms: Complete String Quartets, Quintets & Sextets
  type: MusicAlbum
  date published: 2003-01-01
popularity: 2
genre: classical
genre: german-romanticism
genre: classical-piano
genre: late-romantic-era
genre: chamber-music
genre: orchestral
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T14:53:07Z
audio: Piano Quintet in F Minor, Op. 34: III. Scherzo (Allegro)
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String Quintet No. 2 in G Major, Op. 111: IV. Vivace ma non troppo presto
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duration: PT4M33S
duration ms: 273813
explicit: false
by artist: Johannes Brahms
by artist: Cecil Aronowitz
by artist: Amadeus Quartet
in album: Brahms: Complete String Quartets, Quintets & Sextets
  type: MusicAlbum
  date published: 2003-01-01
popularity: 2
genre: classical
genre: german-romanticism
genre: classical-piano
genre: late-romantic-era
genre: chamber-music
genre: orchestral
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T15:42:38Z
audio: String Quintet No. 2 in G Major, Op. 111: IV. Vivace ma non troppo presto
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Clarinet Quintet in B Minor, Op. 115: III. Andantino - Presto non assai, ma con sentimento
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duration: PT4M36S
duration ms: 276933
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by artist: Johannes Brahms
by artist: Karl Leister
by artist: Amadeus Quartet
in album: Brahms: Complete String Quartets, Quintets & Sextets
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  date published: 2003-01-01
popularity: 2
genre: classical
genre: german-romanticism
genre: classical-piano
genre: late-romantic-era
genre: chamber-music
genre: orchestral
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Clarinet Quintet in B Minor, Op. 115: III. Andantino - Presto non assai, ma con sentimento
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String Sextet No. 2 in G Major, Op. 36: III. Poco adagio
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duration: PT8M33S
duration ms: 513280
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by artist: Johannes Brahms
by artist: Amadeus Quartet
by artist: Cecil Aronowitz
by artist: William Pleeth
in album: Brahms: Complete String Quartets, Quintets & Sextets
  type: MusicAlbum
  date published: 2003-01-01
popularity: 2
genre: classical
genre: german-romanticism
genre: classical-piano
genre: late-romantic-era
genre: chamber-music
genre: orchestral
isrc code: DEF056802513
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc249934dc8cab2e7b1fb799e3974cef76fd2f89a65c39e3cacaabf4715e72f7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056802513.
  date published: 2026-07-08T03:20:19Z
audio: String Sextet No. 2 in G Major, Op. 36: III. Poco adagio
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String Quartet No. 2 in A Minor, Op. 51, No. 2: IV. Finale (Allegro non assai - Più vivace)
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by artist: Amadeus Quartet
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popularity: 3
genre: classical
genre: german-romanticism
genre: classical-piano
genre: late-romantic-era
genre: chamber-music
genre: orchestral
isrc code: DEF055901474
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-08T03:20:19Z
audio: String Quartet No. 2 in A Minor, Op. 51, No. 2: IV. Finale (Allegro non assai - Più vivace)
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Piano Quintet in F Minor, Op. 34: IV. Finale (poco sostenuto - Allegro non troppo)
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Clarinet Quintet in B Minor, Op. 115: IV. Con moto
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String Sextet No. 2 in G Major, Op. 36: IV. Poco allegro
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Do You Want? - String Quintet
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date published: 2024-03-22

Do You Want? - String Quartet
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date published: 2024-03-22

Mozart's Art - Vol.1 (Remastered 2023)
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Mozart's Art - Vol. 2 (Remastered 2023)
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Mozart: Quartet KV 464 & Quintet KV 515
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Amadeus Quartet
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Amadeus Quartet plays Brahms
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Mozart's Art - Vol. 2
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Mozart: In Love with Mozart, Vol. 1
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Mozart's Art - Vol.1
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Beethoven: The String Quartets in under 10 minutes
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track: String Quartet No. 13 in B-Flat Major, Op. 130: IV. Alla danza tedesca. Allegro Assai
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OTSVerifyInstructions
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value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

OpenTimestamps Proof of Existence
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encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebf18e34dd351d1adeeec34ae6e85f7453d1a6fd426c030ab0b54027ed7cbc9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056200036.
date published: 2026-07-08T03:53:27Z

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Amadeus Quartet 1956-1961: Haydn, Beethoven & Dvořák (Remastered 2018)
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Mozart & Beethoven: String Quartets (Live)
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date published: 2017-09-15
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  additional property: OTSVerifyInstructions
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    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-31T00:26:26Z
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-31T17:29:52Z
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  subject of: OpenTimestamps Proof of Existence
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OTSVerificationAPI
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OTSVerifyInstructions
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OpenTimestamps Proof of Existence
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date published: 2026-07-08T08:56:20Z

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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-31T02:51:48Z
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:22:41Z
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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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OTSTimestamp
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OTSVerifyInstructions
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value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

OpenTimestamps Proof of Existence
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date published: 2026-07-08T03:20:19Z

String Quartet No. 9, D.173: 3. Menuetto. Allegro vivace
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Mozart: String Quartet No.17 In B Flat, K.458 -"The Hunt" / Schubert: String Quartet No.10 In E Flat Major, D.87; String Quartet No. 8 In B Flat Major, D.112 (Op. Post. 168) / Mendelssohn: Fo
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Britten: String Quartet No.3, Op.94 (Live)
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Haydn: String Quartets (The RIAS Amadeus Quartet Recordings, Vol. VI)
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  additional property: OTSVerifyInstructions
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    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:53:27Z
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  additional property: OTSVerifyInstructions
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    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-30T08:30:10Z
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  subject of: OpenTimestamps Proof of Existence
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track: String Quartet in F Minor, Op. 20/5, Hob. III:35, "Sun Quartet": I. Allegro moderato
track: String Quartet in F Minor, Op. 20/5, Hob. III:35, "Sun Quartet": III. Adagio
track: String Quartet in E-Flat Major, Op. 33/2, Hob. III:38 "The Joke": I. Allegro moderato
track: String Quartet in E-Flat Major, Op. 33/2, Hob. III:38 "The Joke": IV. Finale

OTSVerificationAPI
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OTSTimestamp
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OTSVerifyInstructions
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value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

OpenTimestamps Proof of Existence
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date published: 2026-06-13T13:32:09Z

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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-08-01T01:44:32Z
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T00:26:26Z
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Romanticism (The RIAS Amadeus Quartet Recordings, Vol. V)
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Modernism (The RIAS Amadeus Quartet Recordings, Vol. IV)
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Mozart, Beethoven & Bruckner: String Quintets
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Schubert: Piano Quintet, Hephzibah Menuhin vs. Christoph Eschenbach
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Schubert: String Quartet No. 14 "Death and the Maiden", Juilliard Quartet vs Amadeus Quartet (Compare 2 Versions)
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Schubert: Quintet in A Major, D. 667 Trout (Remastered)
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Beethoven: String Quartets (The RIAS Amadeus Quartet Recordings, Vol. I)
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Beethoven, Vol. 10 - String Quartets 01-11
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Haydn: Streichquartette (Eloquence)
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Finest Recordings - Schbert's "Death and the Maiden": A String Quartet
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Finest Recordings - Beethoven's String Quartet No 7
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