Artemis Quartet
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genre: chamber music
genre: classical
description: The Artemis Quartet is a German string quartet, founded in 1989 in Lübeck, and now based in Berlin. The quartet is named for the Greek goddess of hunting and the wilderness. History The first membe
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Piazzolla: Concierto del Ángel: I. Introducción al Ángel (Arr. Runge & Ammon for String Quartet)
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Schumann: Fantasie in C Major, Op. 17: I. Durchaus phantastisch und leidenschaftlich vorzutragen
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Schumann & Brahms: Piano Quintets
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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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  by artist: Artemis Quartet
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  subject of: OpenTimestamps Proof of Existence
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track: Brahms: Piano Quintet in F Minor, Op. 34a: IV. Finale. Poco sostenuto

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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

OpenTimestamps Proof of Existence
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description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f9e7530495c77faa141eeb859383f4603c943d19b0d2bfd194a6ba06773f7c. 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/GBAYC0701971.
date published: 2026-07-08T03:20:19Z

Brahms: Piano Quintet in F Minor, Op. 34a: III. Scherzo. Allegro
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Brahms: Piano Quintet in F Minor, Op. 34a: IV. Finale. Poco sostenuto
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by artist: Leif Ove Andsnes
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genre: classical
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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: Brahms: Piano Quintet in F Minor, Op. 34a: IV. Finale. Poco sostenuto
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Beethoven: Moonlight Sonata and Other Masterpieces
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T08:56:20Z
  audio: Beethoven: Bagatelle No. 25 in A Minor, WoO 59 "Für Elise"
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  subject of: 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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track: Beethoven: Die Ruinen von Athen, Op. 113: IV. Marcia alla Turca
track: Beethoven / Arr. Barrios Mangoré: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": I. Adagio sostenuto
track: Beethoven: Piano Sonata No. 23 in F Minor, Op. 57 "Appassionata": III. Allegro ma non troppo

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OTSTimestamp
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OTSVerifyInstructions
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OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b214644f902fe26c3edc102427ab651b07323379105a3ccc13dfbaa62cbeb06. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBAYC8700646.
date published: 2026-07-08T03:22:41Z

Beethoven: Symphony No. 6 in F Major, Op. 68 "Pastoral": I. Erwachen heiterer Empfindungen bei der Ankunft auf dem Lande. Allegro ma non troppo
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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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Beethoven / Arr. Barrios Mangoré: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": I. Adagio sostenuto
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Beethoven: Piano Sonata No. 23 in F Minor, Op. 57 "Appassionata": III. Allegro ma non troppo
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track: Romance in G Major, Op. 40
track: String Quartet No. 14 in C-Sharp Minor, Op. 131: IV. Andante ma non troppo e molto cantabile
track: Romance for Violin and Orchestra, Op. 50
track: Piano Concerto No. 2 in B-Flat Major, Op. 19: II. Adagio
track: Piano Concerto No. 3 in C Minor, Op. 37: II. Largo
track: String Quartet No. 1 in F Major, Op. 18 No. 1: II. Adagio affettuoso ed appassionato (extract)
track: Piano Sonata No. 28, Op. 101: III. Adagio, ma non troppo
track: Violin Sonata No. 7 in C Minor, Op. 30 No. 2: II. Adagio cantabile
track: Piano Sonata No. 15 in D Major, Op. 28 "Pastorale": II. Andante
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track: Bagatelle in A Minor, WoO 59 "Für Elise"
track: Piano Concerto No. 4 in G Major, Op. 58: II. Andante con moto (quaver = 84)
track: Violin Sonata No. 9 in A Major, Op. 47 "Kreutzer Sonata": II. Andante con variazioni 1-4
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track: Piano Sonata No. 31 in A-Flat Major, Op. 110: III. Adagio, ma non troppo
track: Symphony No. 3 in E-Flat Major, Op. 55 "Eroica": II. Marcia funebre (adagio assai)
track: Piano Trio No. 7 in B-Flat Major, Op. 97 "Archduke": III. Andante cantabile ma però con moto
track: Septet in E-Flat Major, Op. 20: II. Adagio cantabile

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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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Romance for Violin and Orchestra, Op. 50
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Piano Concerto No. 2 in B-Flat Major, Op. 19: II. Adagio
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Piano Concerto No. 3 in C Minor, Op. 37: II. Largo
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String Quartet No. 1 in F Major, Op. 18 No. 1: II. Adagio affettuoso ed appassionato (extract)
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Piano Sonata No. 28, Op. 101: III. Adagio, ma non troppo
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Violin Sonata No. 7 in C Minor, Op. 30 No. 2: II. Adagio cantabile
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Piano Sonata No. 15 in D Major, Op. 28 "Pastorale": II. Andante
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
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String Quartet No. 3 in D Major, Op. 18 No. 3: II. Andante con moto
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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
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Bagatelle in A Minor, WoO 59 "Für Elise"
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Bagatelle in A Minor, WoO 59 "Für Elise"
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Piano Concerto No. 4 in G Major, Op. 58: II. Andante con moto (quaver = 84)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Piano Concerto No. 4 in G Major, Op. 58: II. Andante con moto (quaver = 84)
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Violin Sonata No. 9 in A Major, Op. 47 "Kreutzer Sonata": II. Andante con variazioni 1-4
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by artist: Jeremy Menuhin
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Violin Sonata No. 9 in A Major, Op. 47 "Kreutzer Sonata": II. Andante con variazioni 1-4
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Piano Sonata No. 23 in F Minor, Op. 57 "Appassionata": II. Andante con moto
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Piano Sonata No. 23 in F Minor, Op. 57 "Appassionata": II. Andante con moto
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Piano Sonata No. 31 in A-Flat Major, Op. 110: III. Adagio, ma non troppo
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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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Symphony No. 3 in E-Flat Major, Op. 55 "Eroica": II. Marcia funebre (adagio assai)
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Piano Trio No. 7 in B-Flat Major, Op. 97 "Archduke": III. Andante cantabile ma però con moto
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Septet in E-Flat Major, Op. 20: II. Adagio cantabile
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100 Best Chamber Music
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Beethoven: Septet in E-Flat Major, Op. 20: III. Tempo di menuetto
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Vivaldi: The Four Seasons, Violin Concerto in F Minor, Op. 8 No. 4, RV 297 "Winter": II. Largo
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Mozart: Eine kleine Nachtmusik, K. 525: III. Menuetto. Allegretto
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Beethoven: Violin Sonata No. 5 in F Major, Op. 24 "Spring": I. Allegro (Excerpt)
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The Earle of Essex Galiard from Lachrimae, or Seaven Teares
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Mozart: String Quintet No. 4 in G Minor, K. 516: III. Adagio ma non troppo (Excerpt)
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Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": II. Poco adagio, cantabile (Excerpt)
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Beethoven: String Quartet No. 1 in F Major, Op. 18 No. 1: II. Adagio affettuoso ed appassionato (Excerpt)
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Mozart: Divertimento No. 17 in D Major, K. 334/320b: III. Menuetto - Trio
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Beethoven: Cello Sonata No. 3 in A Major, Op. 69: I. Allegro ma non tanto (Excerpt)
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Beethoven: String Quartet No. 4 in C Minor, Op. 18 No. 4: III. Menuetto. Allegretto
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Boccherini: String Quintet in E Major, Op. 11 No. 5, G. 275: III. Minuetto
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Beethoven: Piano Trio No. 5 in D Major, Op. 70 No. 1 "Ghost": II. Largo assai ed espressivo (Excerpt)
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Beethoven: Violin Sonata No. 9 in A Major, Op. 47 "Kreutzer": I. Adagio sostenuto - Presto (Excerpt)
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Bach, JS: Viola da Gamba Sonata No. 3 in G Minor, BWV 1029: I. Vivace
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Haydn: String Quartet in B-Flat Major, Op. 76 No. 4, Hob. III:78 "Sunrise": I. Allegro con spirito (Excerpt)
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Schubert: String Quartet No. 13 in A Minor, Op. 29, D. 804 "Rosamunde": II. Andante
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Lachrimae Antiquae from Lachrimae, or Seaven Teares
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Mozart: Clarinet Quintet in A Major, K. 581 "Stadler": I. Allegro
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Schubert: String Quartet No. 14 in D Minor, D. 810 "Death and the Maiden": II. Andante con moto (Excerpt)
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Bach, JS: Brandenburg Concerto No. 5 in D Major, BWV 1050: II. Affettuoso
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Mozart: Divertimento in D Major, K. 136 "Salzburg Symphony No. 1": I. Allegro
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Mozart: Serenade for Winds No. 10 in B-Flat Major, K. 361 "Gran partita": III. Adagio
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Mozart: Serenade No. 6 in D Major, K. 239 "Serenata Notturna": I. Marcia. Maestoso
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Vivaldi: The Four Seasons, Violin Concerto in E Major, Op. 8 No. 1, RV 269 "Spring": I. Allegro
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Bach, JS: Musikalisches Opfer, BWV 1079: Sonata sopr' il soggetto Reale. IV. Allegro
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Gluck: Orphée et Eurydice, Wq. 41, Act 2: Danse des ombres heureuses
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Relaxing Music for a Whole Night Sleep
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track: Adagio for Strings, Op. 11
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  additional property: OTSVerifyInstructions
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date published: 2017-05-26
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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
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-06-13T17:25:41Z
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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
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-07T20:41:57Z
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  subject of: OpenTimestamps Proof of Existence
  audio: Piazzolla / Arr. Carli: María de Buenos Aires, Scene 5: Fuga y misterio
track: Piazzolla: Estaciónes porteñas: No. 4, Primavera porteña
track: Piazzolla: Estaciones porteñas: No. 1, Verano porteño (Arr. Runge & Ammon for Piano Trio)
track: Piazzolla: Estaciónes porteñas: No. 2, Otoño porteño
track: Piazzolla: Histoire du tango: I. Bordel 1900
track: Piazzolla: Le Grand Tango
track: Piazzolla: Adiós Nonino (Arr. Medaglia & Hammon)
track: Piazzolla / Arr. Brouwer for Guitar: Concierto del Ángel: III. La muerte del Ángel
track: Piazzolla: Los pájaros perdidos
track: Piazzolla / Orch. Milone: Escualo
track: Piazzolla / Orch. Gupta: Concierto del Ángel: III. La muerte del Ángel
track: Piazzolla / Transcr. Desyatnikov: Tango Ballet: II. La calle
track: Piazzolla / Transcr. Desyatnikov: Tango Ballet: III. Encuentro - Olvido
track: Piazzolla / Transcr. Desyatnikov: Tango Ballet: IV. Cabaret
track: Piazzolla / Transcr. Desyatnikov: Tango Ballet: VI. La calle
track: Piazzolla / Orch. Desyatnikov: María de Buenos Aires, Scene 3: "Yo soy María" (María)

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OTSVerificationAPI
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OTSTimestamp
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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

OpenTimestamps Proof of Existence
type: DigitalDocument
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description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ceae3dc2c0fdeab1e7a059741bbc701777223160b2bb8b3657de0f8ba11ea6. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/GBAYC0000951.
date published: 2026-07-07T14:04:01Z

Piazzolla / Arr. Carli: María de Buenos Aires, Scene 5: Fuga y misterio
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Piazzolla: Estaciónes porteñas: No. 4, Primavera porteña
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by artist: Héctor Console
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genre: classical-piano
genre: opera
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T14:18:56Z
audio: Piazzolla: Estaciónes porteñas: No. 4, Primavera porteña
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Piazzolla: Estaciones porteñas: No. 1, Verano porteño (Arr. Runge & Ammon for Piano Trio)
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Piazzolla: Estaciones porteñas: No. 1, Verano porteño (Arr. Runge & Ammon for Piano Trio)
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Piazzolla: Estaciónes porteñas: No. 2, Otoño porteño
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  additional property: Danceability
    type: PropertyValue
    value: 0.407
  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
    value: 0.053
  additional property: Acousticness
    type: PropertyValue
    value: 0.969
  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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  additional property: Key Name
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Piazzolla: Histoire du tango: I. Bordel 1900
type: MusicRecording
duration: PT3M57S
duration ms: 237000
explicit: false
by artist: Emmanuel Pahud
by artist: Christian Rivet
in album: The Sound of Piazzolla
  type: MusicAlbum
  date published: 2017-05-26
popularity: 4
isrc code: GBAYC1302427
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
  value: https://blockstream.info/api/block-height/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1302427
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291c0d49523c2ca758b9b4e0ea80289f0150c4e4af43134fd96c3a5ef46bab73. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBAYC1302427.
  date published: 2026-07-08T03:22:41Z
audio: Piazzolla: Histoire du tango: I. Bordel 1900
  type: AudioObject
  additional property: Tempo (BPM)
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    value: 105.914
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
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    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.507
  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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Piazzolla: Le Grand Tango
type: MusicRecording
duration: PT9M33S
duration ms: 573186
explicit: false
by artist: Mstislav Rostropovich
by artist: Igor Uriash
in album: The Sound of Piazzolla
  type: MusicAlbum
  date published: 2017-05-26
popularity: 12
isrc code: GBPFW1600281
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: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBPFW1600281
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T11:38:34Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df6caf0e04cf43a2d15bc280186e7cd6d7a5af6892b80fb999a945c980f34cd. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBPFW1600281.
  date published: 2026-07-02T11:38:34Z
audio: Piazzolla: Le Grand Tango
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
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  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.225
  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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Piazzolla: Adiós Nonino (Arr. Medaglia & Hammon)
type: MusicRecording
duration: PT4M51S
duration ms: 291626
explicit: false
by artist: Die 12 Cellisten der Berliner Philharmoniker
in album: The Sound of Piazzolla
  type: MusicAlbum
  date published: 2017-05-26
popularity: 6
isrc code: GBAYC0000961
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
  type: PropertyValue
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additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0000961
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd7d35856590dc289883dec23db0c016bd9358f29c4487c486731c9c0d0a758. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBAYC0000961.
  date published: 2026-07-08T03:22:41Z
audio: Piazzolla: Adiós Nonino (Arr. Medaglia & Hammon)
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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  additional property: Key Name
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Piazzolla / Arr. Brouwer for Guitar: Concierto del Ángel: III. La muerte del Ángel
type: MusicRecording
duration: PT5M7S
duration ms: 307306
explicit: false
by artist: Manuel Barrueco
in album: The Sound of Piazzolla
  type: MusicAlbum
  date published: 2017-05-26
popularity: 2
isrc code: GBAYC9701610
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
  type: PropertyValue
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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-height/957145
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC9701610
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T08:56:20Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d8b5c1fc71b4e6bd4360c3cbe89c40017260988910368d23532cd4d724ba61. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBAYC9701610.
  date published: 2026-07-08T08:56:20Z
audio: Piazzolla / Arr. Brouwer for Guitar: Concierto del Ángel: III. La muerte del Ángel
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 139.254
  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.42
  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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  additional property: Key Name
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  additional property: Mode Name
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Piazzolla: Los pájaros perdidos
type: MusicRecording
duration: PT3M46S
duration ms: 226213
explicit: false
by artist: Philippe Jaroussky
by artist: L'Arpeggiata
by artist: Christina Pluhar
in album: The Sound of Piazzolla
  type: MusicAlbum
  date published: 2017-05-26
popularity: 5
genre: classical
genre: opera
isrc code: GBPFW1100632
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-18T17:19:07+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb2dce985fca370500c92b40eebbce9521d12bc33ecd44ae53be17750ab06c310
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBPFW1100632
additional property: OTSTimestamp
  type: PropertyValue
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2dce985fca370500c92b40eebbce9521d12bc33ecd44ae53be17750ab06c310. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBPFW1100632.
  date published: 2026-07-08T03:22:41Z
audio: Piazzolla: Los pájaros perdidos
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
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  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.383
  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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  additional property: Key Name
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  additional property: Mode Name
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Piazzolla / Orch. Milone: Escualo
type: MusicRecording
duration: PT4M2S
duration ms: 242481
explicit: false
by artist: Alison Balsom
in album: The Sound of Piazzolla
  type: MusicAlbum
  date published: 2017-05-26
popularity: 3
genre: classical
isrc code: GBAYC0601241
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-21T21:03:24+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe6029e174bf9dbf4b933393f3a388fbadb3276799aa33ecf91e9f7dec9bff838
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957124
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957124
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0601241
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:53:27Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6029e174bf9dbf4b933393f3a388fbadb3276799aa33ecf91e9f7dec9bff838. 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/GBAYC0601241.
  date published: 2026-07-08T03:53:27Z
audio: Piazzolla / Orch. Milone: Escualo
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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  additional property: Key Name
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  additional property: Mode Name
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Piazzolla / Orch. Gupta: Concierto del Ángel: III. La muerte del Ángel
type: MusicRecording
duration: PT3M25S
duration ms: 205466
explicit: false
by artist: Gidon Kremer
by artist: Kremerata Baltica
by artist: Alois Posch
by artist: Per Arne Glorvigen
by artist: Vadim Sakharov
in album: The Sound of Piazzolla
  type: MusicAlbum
  date published: 2017-05-26
popularity: 3
genre: classical
genre: minimalism
genre: tango
genre: chamber-music
isrc code: DEA809813603
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-20T18:32:57+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb325b494575447ac6b1321a971a6f085693a9521fb11f381cf21a1f75f72b08e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957120
additional property: OTSVerificationAPI
  type: PropertyValue
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb325b494575447ac6b1321a971a6f085693a9521fb11f381cf21a1f75f72b08e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEA809813603.
  date published: 2026-07-08T03:22:41Z
audio: Piazzolla / Orch. Gupta: Concierto del Ángel: III. La muerte del Ángel
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
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  additional property: Danceability
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Piazzolla / Transcr. Desyatnikov: Tango Ballet: II. La calle
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by artist: Kremerata Baltica
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genre: tango
genre: chamber-music
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
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Piazzolla / Transcr. Desyatnikov: Tango Ballet: III. Encuentro - Olvido
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by artist: Kremerata Baltica
by artist: Marta Sudraba
by artist: Ula Zebriunaite
in album: The Sound of Piazzolla
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popularity: 1
genre: classical
genre: minimalism
genre: tango
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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: 2026-07-08T03:22:41Z
audio: Piazzolla / Transcr. Desyatnikov: Tango Ballet: III. Encuentro - Olvido
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Piazzolla / Transcr. Desyatnikov: Tango Ballet: IV. Cabaret
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by artist: Kremerata Baltica
by artist: Marta Sudraba
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popularity: 1
genre: classical
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genre: tango
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Piazzolla / Transcr. Desyatnikov: Tango Ballet: IV. Cabaret
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Piazzolla / Transcr. Desyatnikov: Tango Ballet: VI. La calle
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by artist: Kremerata Baltica
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popularity: 1
genre: classical
genre: minimalism
genre: tango
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Piazzolla / Transcr. Desyatnikov: Tango Ballet: VI. La calle
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Piazzolla / Orch. Desyatnikov: María de Buenos Aires, Scene 3: "Yo soy María" (María)
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by artist: Julia Zenko
by artist: Kremerata Musica
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popularity: 3
genre: classical
genre: minimalism
genre: tango
genre: chamber-music
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Piazzolla / Orch. Desyatnikov: María de Buenos Aires, Scene 3: "Yo soy María" (María)
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The Very Best of Beethoven
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-06-13T13:32:09Z
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track: Beethoven: Missa solemnis in D Major, Op. 123: Agnus Dei

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Beethoven: Symphony No. 9 in D Minor, Op. 125 "Choral": IV. Presto "O Freunde, nicht diese Töne!" (Excerpt)
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Beethoven: Symphony No. 7 in A Major, Op. 92: II. Allegretto (Excerpt)
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Beethoven: Piano Sonata No. 21 in C Major, Op. 53 "Waldstein": I. Allegro con brio (Excerpt)
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  date published: 2026-06-13T13:32:09Z
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Beethoven: Die Ruinen von Athen, Op. 113: IV. Marcia alla Turca
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  date published: 2026-06-13T13:32:09Z
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Beethoven: Piano Concerto No. 5 in E-Flat Major, Op. 73 "Emperor": I. Allegro (Excerpt)
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Beethoven: Romance for Violin and Orchestra No. 1 in G Major, Op. 40
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  date published: 2026-06-13T13:32:09Z
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Beethoven: Septet in E-Flat Major, Op. 20: III. Tempo di menuetto
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Beethoven: Coriolan Overture, Op. 62
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Beethoven: Choral Fantasy in C Minor, Op. 80: II. Finale
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:30:09Z
audio: Beethoven: Choral Fantasy in C Minor, Op. 80: II. Finale
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Beethoven: String Quartet No. 8 in E Minor, Op. 59 No. 2 "Razumovsky": III. Allegretto
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duration: PT6M8S
duration ms: 368400
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by artist: Ludwig van Beethoven
by artist: Artemis Quartet
in album: The Very Best of Beethoven
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  date published: 2019-08-23
popularity: 16
genre: classical
genre: classical-piano
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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: 2026-07-02T03:30:09Z
audio: Beethoven: String Quartet No. 8 in E Minor, Op. 59 No. 2 "Razumovsky": III. Allegretto
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Beethoven: Fidelio, Op. 72, Act 1: "O welche Lust" (Chorus, Prisoners)
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duration: PT6M2S
duration ms: 362293
explicit: false
by artist: Ludwig van Beethoven
by artist: Sir Simon Rattle
by artist: Thomas Ebenstein
by artist: Ion Tibrea
by artist: Arnold Schoenberg Chor
by artist: Berliner Philharmoniker
in album: The Very Best of Beethoven
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  date published: 2019-08-23
popularity: 16
genre: classical
genre: classical-piano
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: 2026-07-02T03:30:09Z
audio: Beethoven: Fidelio, Op. 72, Act 1: "O welche Lust" (Chorus, Prisoners)
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Beethoven: Piano Concerto No. 3 in C Minor, Op. 37: III. Rondo. Allegro
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duration: PT9M29S
duration ms: 569480
explicit: false
by artist: Ludwig van Beethoven
by artist: Pierre-Laurent Aimard
by artist: Nikolaus Harnoncourt
by artist: Chamber Orchestra of Europe
in album: The Very Best of Beethoven
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  date published: 2019-08-23
popularity: 16
genre: classical
genre: classical-piano
genre: chamber-music
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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: 2026-07-02T03:55:08Z
audio: Beethoven: Piano Concerto No. 3 in C Minor, Op. 37: III. Rondo. Allegro
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Beethoven: 7 Variations on "Bei Männern, welche Liebe fühlen", from Mozart's Die Zauberflöte, WoO 46
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duration: PT9M18S
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by artist: Gautier Capuçon
by artist: Frank Braley
in album: The Very Best of Beethoven
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popularity: 15
genre: classical
genre: classical-piano
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: 2026-07-02T03:55:08Z
audio: Beethoven: 7 Variations on "Bei Männern, welche Liebe fühlen", from Mozart's Die Zauberflöte, WoO 46
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Beethoven: Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": II. Adagio cantabile
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duration: PT5M1S
duration ms: 301066
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by artist: François-René Duchâble
in album: The Very Best of Beethoven
  type: MusicAlbum
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popularity: 17
genre: classical
genre: classical-piano
genre: chamber-music
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:30:09Z
audio: Beethoven: Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": II. Adagio cantabile
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Beethoven: Violin Sonata No. 9 in A Major, Op. 47 "Kreutzer": III. Finale. Presto
type: MusicRecording
duration: PT8M53S
duration ms: 533506
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by artist: Maxim Vengerov
by artist: Alexander Markovich
in album: The Very Best of Beethoven
  type: MusicAlbum
  date published: 2019-08-23
popularity: 16
genre: classical
genre: classical-piano
genre: chamber-music
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:30:09Z
audio: Beethoven: Violin Sonata No. 9 in A Major, Op. 47 "Kreutzer": III. Finale. Presto
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Beethoven: Piano Trio No. 7 in B-Flat Major, Op. 97 "Archduke": I. Allegro moderato
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duration: PT12M56S
duration ms: 776773
explicit: false
by artist: Ludwig van Beethoven
by artist: Haydn Trio Wien
in album: The Very Best of Beethoven
  type: MusicAlbum
  date published: 2019-08-23
popularity: 15
genre: classical
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Orchestral Suite No. 3 in D Major, BWV 1068: II. Air "On the G String"
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subject of: OpenTimestamps Proof of Existence
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Variations on an Original Theme, Op. 36 "Enigma": Var. IX. Nimrod
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
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Goldberg Variations, BWV 988: Var. 25. Andante espressivo
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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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String Quartet No. 2 "Company": IV. Quartet Note = 160
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3 Gymnopédies: I. Lent et douloureux
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  date published: 2026-07-08T03:22:41Z
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Una mattina
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Piano Sonata No. 16 in C Major, K. 545 'Sonata facile': II. Andante
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Spiegel im Spiegel
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Piano Trio in C Major, K. 548: II. Andante cantabile
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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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Piano Concerto No. 5 in E-Flat Major, Op. 73 "Emperor": II. Adagio un poco mosso
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Nocturnes, Op. 32: No 2 in A-Flat Major
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The Four Seasons, Violin Concerto No. 4 in F Minor, RV 297 "Winter": II. Largo
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Violin Concerto in A Minor, BWV 1041: II. Andante
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Suite bergamasque, L. 75: III. Clair de lune
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Sicilienne, Op. 78
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Piano Concerto No. 1 in F-Sharp Minor, Op. 1: II. Andante
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Piano Concerto No. 1 in D Major, Op. 17: II. Andante sostenuto quasi adagio
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Sad Violin
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The Piazzolla Project
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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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    date published: 2026-07-08T03:20:19Z
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    additional property: Valence (Positivity)
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track: Piazzolla: Estaciones porteñas: No. 4, Primavera porteña (Arr. Runge & Ammon for Piano Trio)
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  by artist: Eckart Runge
  by artist: Natalia Prischepenko
  in album: The Piazzolla Project
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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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f310da8f8b728a3c4ffeb16960ec194222d53167b7d30d552952b530f5b9bd. 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/GBAYC0802768.
    date published: 2026-07-08T03:20:19Z
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  by artist: Eckart Runge
  by artist: Heime Müller
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    type: MusicAlbum
    date published: 2009-05-11
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  genre: chamber-music
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  subject of: OpenTimestamps Proof of Existence
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track: Piazzolla: Concierto del Ángel: I. Introducción al Ángel (Arr. Runge & Ammon for String Quartet)
track: Piazzolla: Concierto del Ángel: II. Tango del Ángel (Arr. Runge & Ammon for String Quartet)

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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
type: PropertyValue
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OTSTimestamp
type: PropertyValue
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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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0590fccfb2d9082e542a26bed77e292d2dccfa7fe4d03bb56889282fd09ab824. 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/GBAYC0802769.
date published: 2026-07-08T03:20:19Z

Piazzolla: Estaciones porteñas: No. 1, Verano porteño (Arr. Runge & Ammon for Piano Trio)
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additional property: Musical Key
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additional property: Mode (Major/Minor)
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additional property: Time Signature
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additional property: Danceability
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additional property: Energy
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additional property: Speechiness
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additional property: Acousticness
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additional property: Liveness
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additional property: Valence (Positivity)
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additional property: Loudness (dB)
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additional property: Key Name
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Piazzolla: Concierto del Ángel: II. Tango del Ángel (Arr. Runge & Ammon for String Quartet)
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duration ms: 276960
explicit: false
by artist: Artemis Quartet
in album: The Piazzolla Project
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  date published: 2009-05-11
genre: classical
genre: chamber-music
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbd1bd9e51ff94954fb6671f892083a8193e9b7ad6637fd608cbed2b8678512. 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/GBAYC0802762.
  date published: 2026-07-08T03:53:27Z
audio: Piazzolla: Concierto del Ángel: II. Tango del Ángel (Arr. Runge & Ammon for String Quartet)
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Dvořák, Beethoven, Shostakovich, Piazzolla...
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  by artist: Natalia Prischepenko
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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: 2026-07-08T03:22:41Z
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
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    additional property: Danceability
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Sad Classical
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date published: 2018-11-22
track: Spiegel im Spiegel for violin and piano
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-07T16:07:00Z
  audio: Spiegel im Spiegel for violin and piano
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track: Adagio for Strings, Op. 11
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:22:41Z
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track: Peer Gynt, Op. 23, Act III: No. 14, The Death of Åse
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track: Sicilienne, Op. 78
track: Nocturne in C-Sharp Minor, B. 49 (Lento con gran espressione)

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OpenTimestamps Proof of Existence
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date published: 2026-07-08T03:22:41Z

Peer Gynt, Op. 23, Act III: No. 14, The Death of Åse
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Sicilienne, Op. 78
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audio: Sicilienne, Op. 78
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Nocturne in C-Sharp Minor, B. 49 (Lento con gran espressione)
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Beethoven -Sleeping
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Study Schubert
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Relax Schubert
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Working from Home Classical Music
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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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    date published: 2026-07-08T03:20:19Z
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  genre: early-romantic-era
  genre: german-romanticism
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9138e97156e6fe04d27d44e4056218d403438a6575e783e8bd35655ff74c2dd2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBAYC1302810.
    date published: 2026-07-08T03:22:41Z
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  subject of: OpenTimestamps Proof of Existence
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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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OTSTimestamp
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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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2e79e8f09a8fe55f1ce671d6a63d220b114089b14a9e6d03641e174205bf21. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBAYC0701969.
date published: 2026-07-08T08:56:20Z

Brahms: Piano Quintet in F Minor, Op. 34a: I. Allegro non troppo
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additional property: Valence (Positivity)
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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: 2026-07-08T03:22:41Z
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date published: 2015-09-18
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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
    type: DigitalDocument
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    date published: 2026-07-08T03:22:41Z
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track: Brahms: String Quartet No. 1 in C Minor, Op. 51 No. 1: III. Allegretto molto moderato e comodo
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:53:27Z
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  subject of: OpenTimestamps Proof of Existence
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track: Brahms: String Quartet No. 3 in B-Flat Major, Op. 67: III. Agitato. Allegretto non troppo
track: Brahms: String Quartet No. 3 in B-Flat Major, Op. 67: IV. Poco allegretto con variazioni

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OTSVerificationAPI
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OTSTimestamp
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OTSVerifyInstructions
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OpenTimestamps Proof of Existence
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date published: 2026-07-08T03:22:41Z

Brahms: String Quartet No. 3 in B-Flat Major, Op. 67: II. Andante
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