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  track: Cello Sonata No. 3 in A Major, Op. 69: Iii. Adagio cantabile
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Septet in E-Flat Major, Op. 20: I. Adagio - Allegro on brio
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Septet in E-Flat Major, Op. 20: III. Tempo di menuetto
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Septet in E-Flat Major, Op. 20: IV. Tema con variazioni: Andante
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Septet in E-Flat Major, Op. 20: V. Scherzo: Allegro molto e vivace
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Septet in E-Flat Major, Op. 20: VI. Andante con moto alla marcia - Presto
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Clarinet Quintet in A Major, K. 581: I. Allegro
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Cello Sonata No. 3 in A Major, Op. 69: Iii. Adagio cantabile
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Septet in E-flat Major, Op. 20: Ii. Adagio cantabile
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Piano Sonata No. 14 in C-sharp Minor, Op. 27, No. 2, "moonlight": I. Adagio sostenuto
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Beethoven For Inspiration
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Mozart For Meditation
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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track: Concerto for Flute & Harp in C Major, K. 299: II. Andantino (Excerpt)
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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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Peaceful Mozart
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date published: 2021-10-22

Relaxing Beethoven
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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: Piano Concerto No. 5 in E-flat Major, Op. 73, "emperor": Ii. Adagio un poco moto
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track: Piano Sonata No. 14 in C-sharp Minor, Op. 27, No. 2, "moonlight": I. Adagio sostenuto
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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. 14 in C-sharp Minor, Op. 27, No. 2, "moonlight": I. Adagio sostenuto
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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
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OpenTimestamps Proof of Existence
type: DigitalDocument
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date published: 2026-07-08T03:39:04Z

Violin Sonata No. 5 in F Major, Op. 24, "spring": Ii. Adagio molto espressivo
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Mozart: Clarinet Quintet, K. 581 / String Quintet, K. 515
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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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My First Mozart Album
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date published: 2011-11-01
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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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track: Concerto for Violin, Cello & Piano in C Major, Op. 56 "Triple Concerto": II. Largo
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T15:41:10Z
audio: Concerto for Violin, Cello & Piano in C Major, Op. 56 "Triple Concerto": II. Largo
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Piano Trio in B-Flat Major, Op. 11 "Gassenhauer": II. Adagio
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by artist: Madoka Inui
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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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Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": II. Adagio cantabile
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by artist: Jenő Jandó
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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. 8 in C Minor, Op. 13 "Pathétique": II. Adagio cantabile
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Violin Concerto in D Major, Op. 61: II. Larghetto
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by artist: Slovenská filharmónia
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Violin Concerto in D Major, Op. 61: II. Larghetto
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Cello Sonata No. 3 in A Major, Op. 69: III. Adagio cantabile
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Cello Sonata No. 3 in A Major, Op. 69: III. Adagio cantabile
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Violin Sonata No. 5 in F Major, Op. 24 "Spring": II. Adagio molto espressivo
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genre: classical
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Violin Sonata No. 5 in F Major, Op. 24 "Spring": II. Adagio molto espressivo
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Quintet in E-Flat Major, Op. 16: II. Andante cantabile
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Quintet in E-Flat Major, Op. 16: II. Andante cantabile
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track: Salut d'amour, Op. 12
track: Flute Sonata in E-Flat Major, BWV 1031: II. Siciliano (arr. D. Sosin for flute and harp)
track: Fredmans epistlar (arr. J. Eriksson): Fredmans epistlar: No. 82. Vila vid denna kalla (arr. for orchestra)
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track: Allt under himmelens faste
track: Nocturnes, Op. 9: Nocturne No. 2 in E-Flat Major, Op. 9, No. 2
track: Suite del recuerdo: Suite del recuerdo: I. Evocacion
track: Ack, Varmeland du skona
track: Cello Concerto No. 1 in G Major: II. Romance: Andantino
track: En vintersaga, Op. 18: En vintersaga (The Winter's Tale), Op. 18: IV. Epilogue
track: Sicilienne (arr. D. Sosin)
track: Carnival of the Animals: XIII. The Swan
track: Beatles Concerto Grosso No. 3: II. Eight Days a Week: Rondeau (in the style of J.S. Bach)
track: Recuerdos de la Alhambra
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track: Beatles Concerto Grosso No. 4: III. Goodnight
track: Piano Sonata No. 14 in C-Sharp Minor, Op. 27, No. 2, "Moonlight": I. Adagio sostenuto
track: Jocelyn Suite, Op. 100: Berceuse
track: Bells across the Meadows
track: Gustav Adolf II, Op. 49: Gustav II Adolf, Op. 49: VII. Elegy
track: Gammal fabodpsalm fran Dalarna (Old Pastoral Hymn from Dalecarlia) (arr. J. Johansson for orchestra): 2 Sentimental Romances, Op. 28: No. 1. Gammal fabodpsalm fran Dalarna (Old Pastoral Hymn
track: Saeterjentens Sondag, "The Herd-girls' Sunday"
track: 3 Gymnopédies (arr. for flute and harp): Gymnopedie No. 3 (arr. for flute and harp)
track: Stardust (arr. L. Kallin): Stardust (trans. L. Kallin)
track: Sången, Op. 44: Sangen, Op. 44: Interlude

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Frösöblomster, Book 1, Op. 16: Frosoblomster (Froso-Flowers), Book 1, Op. 16: No. 6. Vid Froso kyrka (At Froso Church)
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Flute Sonata in E-Flat Major, BWV 1031: II. Siciliano (arr. D. Sosin for flute and harp)
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Fredmans epistlar (arr. J. Eriksson): Fredmans epistlar: No. 82. Vila vid denna kalla (arr. for orchestra)
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Nocturne: Nocturne (Sov pa min arm)
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Scarborough Fair (arr. P. Breiner)
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By the Sleepy Lagoon
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Oboe Concerto in D Minor: II. Adagio
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duration: PT4M21S
duration ms: 261000
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by artist: Jozsef Kiss
by artist: Budapest Ferenc Erkel Chamber Orchestra
in album: Den Bästa Stunden
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popularity: 0
genre: classical-era
genre: baroque
genre: italian-baroque
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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: 2026-06-13T12:47:07Z
audio: Oboe Concerto in D Minor: II. Adagio
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Old Friends
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duration: PT3M15S
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by artist: Paul Simon
by artist: RTE Concert Orchestra
by artist: Richard Hayman
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popularity: 0
genre: singer-songwriter
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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: 2026-06-13T12:47:07Z
audio: Old Friends
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Berceuse
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by artist: Göran Marcusson
by artist: Gothenburg Musicians
by artist: Jerker Johansson
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T12:47:07Z
audio: Berceuse
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Consort Music: Consort Music: III. Ballad
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duration: PT2M11S
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by artist: English Northern Philharmonia
by artist: David Lloyd-Jones
in album: Den Bästa Stunden
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popularity: 0
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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: 2026-06-13T12:47:07Z
audio: Consort Music: Consort Music: III. Ballad
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Pavane pour une infante defunte (version for piano)
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duration: PT5M59S
duration ms: 359960
explicit: false
by artist: Maurice Ravel
by artist: Klara Kormendi
in album: Den Bästa Stunden
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  date published: 2011-03-15
popularity: 0
genre: classical
genre: impressionism
genre: neoclassicism
genre: post-romantic-era
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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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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T12:47:07Z
audio: Pavane pour une infante defunte (version for piano)
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Clarinet Concerto in A Major, K. 622: II. Adagio
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duration: PT7M19S
duration ms: 439000
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by artist: Ernst Ottensamer
by artist: Mozart Akademie
by artist: Johannes Wildner
in album: Den Bästa Stunden
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popularity: 18
genre: classical
genre: classical-era
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: 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: 2026-06-13T12:47:07Z
audio: Clarinet Concerto in A Major, K. 622: II. Adagio
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Allt under himmelens faste
type: MusicRecording
duration: PT2M58S
duration ms: 178306
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by artist: Gothenburg Musicians
by artist: Jerker Johansson
in album: Den Bästa Stunden
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  date published: 2011-03-15
popularity: 0
genre: bhajan
genre: gregorian-chant
genre: medieval
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additional property: CopyrightID
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T12:47:07Z
audio: Allt under himmelens faste
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Nocturnes, Op. 9: Nocturne No. 2 in E-Flat Major, Op. 9, No. 2
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subject of: OpenTimestamps Proof of Existence
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Suite del recuerdo: Suite del recuerdo: I. Evocacion
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subject of: OpenTimestamps Proof of Existence
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Ack, Varmeland du skona
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Cello Concerto No. 1 in G Major: II. Romance: Andantino
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subject of: OpenTimestamps Proof of Existence
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En vintersaga, Op. 18: En vintersaga (The Winter's Tale), Op. 18: IV. Epilogue
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  date published: 2026-06-13T12:47:07Z
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Sicilienne (arr. D. Sosin)
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Carnival of the Animals: XIII. The Swan
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Beatles Concerto Grosso No. 3: II. Eight Days a Week: Rondeau (in the style of J.S. Bach)
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by artist: Peter Breiner
by artist: Peter Breiner Chamber Orchestra
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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: 2026-06-13T12:47:07Z
audio: Beatles Concerto Grosso No. 3: II. Eight Days a Week: Rondeau (in the style of J.S. Bach)
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Recuerdos de la Alhambra
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by artist: Norbert Kraft
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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: 2026-06-13T12:47:07Z
audio: Recuerdos de la Alhambra
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Clarinet Quintet in A Major, K. 581: II. Larghetto
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by artist: József Balogh
by artist: Danubius Quartet
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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: 2026-06-13T12:47:07Z
audio: Clarinet Quintet in A Major, K. 581: II. Larghetto
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Beatles Concerto Grosso No. 4: III. Goodnight
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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: 2026-06-13T12:47:07Z
audio: Beatles Concerto Grosso No. 4: III. Goodnight
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Piano Sonata No. 14 in C-Sharp Minor, Op. 27, No. 2, "Moonlight": I. Adagio sostenuto
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by artist: Jenő Jandó
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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: 2026-06-13T12:47:07Z
audio: Piano Sonata No. 14 in C-Sharp Minor, Op. 27, No. 2, "Moonlight": I. Adagio sostenuto
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Jocelyn Suite, Op. 100: Berceuse
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by artist: Slovak Radio Symphony Orchestra
by artist: Ondrej Lenard
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popularity: 0
genre: late-romantic-era
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T12:47:07Z
audio: Jocelyn Suite, Op. 100: Berceuse
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Bells across the Meadows
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by artist: Slovak Radio Symphony Orchestra
by artist: Adrian Leaper
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popularity: 0
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T12:47:07Z
audio: Bells across the Meadows
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Gustav Adolf II, Op. 49: Gustav II Adolf, Op. 49: VII. Elegy
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Gammal fabodpsalm fran Dalarna (Old Pastoral Hymn from Dalecarlia) (arr. J. Johansson for orchestra): 2 Sentimental Romances, Op. 28: No. 1. Gammal fabodpsalm fran Dalarna (Old Pastoral Hymn
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Saeterjentens Sondag, "The Herd-girls' Sunday"
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3 Gymnopédies (arr. for flute and harp): Gymnopedie No. 3 (arr. for flute and harp)
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Stardust (arr. L. Kallin): Stardust (trans. L. Kallin)
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Sången, Op. 44: Sangen, Op. 44: Interlude
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Donizetti: Double Concerto / Flute Concertino / Clarinet Concertino
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track: Concerto for Violin and Cello in D Minor (recon. J. Wojciechowski): III. Rondo (Allegro moderato)
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track: Clarinet Concerto in B-Flat Major (reconstructed R. Meylan): I. Andante sostenuto

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Concerto for Violin and Cello in D Minor (recon. J. Wojciechowski): II. Andante
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Concerto for Violin and Cello in D Minor (recon. J. Wojciechowski): III. Rondo (Allegro moderato)
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Cor Anglais Concertino in G Major: Andante con variazioni
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track: Septet in E-Flat Major, Op. 20: IV. Tema con variazioni: Andante
track: Septet in E-Flat Major, Op. 20: V. Scherzo: Allegro molto e vivace
track: Septet in E-Flat Major, Op. 20: VI. Andante con moto alla marcia - Presto
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track: Wind Quintet in E-Flat Major, Hess 19: III. Minuetto
track: Sextet in E-Flat Major, Op. 81b: I. Allegro con brio
track: Sextet in E-Flat Major, Op. 81b: II. Adagio
track: Sextet in E-Flat Major, Op. 81b: III. Rondo

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Wind Quintet in E-Flat Major, Hess 19: III. Minuetto
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Sextet in E-Flat Major, Op. 81b: I. Allegro con brio
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Sextet in E-Flat Major, Op. 81b: II. Adagio
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Sextet in E-Flat Major, Op. 81b: III. Rondo
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Piano Trio No. 5 in D Major, Op. 70, No. 1, "Ghost": II. Largo assai ed espressivo
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Piano Quintet in A Major, Op. 114, D. 667, "Die Forelle" (The Trout): II. Andante
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String Quartet No. 32 in C Major, Op. 33, No. 3, Hob.III:39, "The Bird": III. Adagio ma non troppo
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String Quartet No. 9 in C Major, Op. 59, No. 3, "Rasumovsky": III. Menuetto: Grazioso
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Piano Quintet in A Major, Op. 114, D. 667, "Die Forelle" (The Trout): III. Scherzo: Presto
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String Quartet No. 32 in C Major, Op. 33, No. 3, Hob.III:39, "The Bird": IV. Rondo: Presto
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String Quartet No. 14 in G Major, K. 387*: I. Allegro vivace assai
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Piano Quintet in A Major, Op. 114, D. 667, "Die Forelle" (The Trout): IV. Thema with Variations: Andante
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subject of: OpenTimestamps Proof of Existence
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String Quartet No. 53 in D Major, Op. 64, No. 5, Hob.III:63, "The Lark": I. Allegro moderato
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String Quartet No. 14 in G Major, K. 387*: II. Menuetto: Allegro (Allegretto)
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String Quartet No. 14 in C-Sharp Minor, Op. 131: I. Adagio ma non troppo e molto espressivo
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String Quartet No. 53 in D Major, Op. 64, No. 5, Hob.III:63, "The Lark": II. Adagio - Cantabile
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String Quartet No. 14 in G Major, K. 387*: III. Andante cantabile
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Piano Trio No. 7 in B-Flat Major, Op. 97, "Archduke": III. Andante cantabile ma pero con moto
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String Quartet No. 53 in D Major, Op. 64, No. 5, Hob.III:63, "The Lark": III. Menuetto: Allegretto
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  date published: 2026-07-02T03:55:08Z
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Piano Trio No. 7 in B-Flat Major, Op. 97, "Archduke": IV. Allegro moderato
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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. 53 in D Major, Op. 64, No. 5, Hob.III:63, "The Lark": IV. Finale: Vivace
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  date published: 2026-07-02T03:55:08Z
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String Quintet No. 4 in G Minor, K. 516*: I. Allegro
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audio: String Quintet No. 4 in G Minor, K. 516*: I. Allegro
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String Quartet No. 62 in C Major, Op. 76, No. 3, Hob.III:77, "Emperor": I. Allegro
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  date published: 2026-07-02T03:55:08Z
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String Quartet No. 62 in C Major, Op. 76, No. 3, Hob.III:77, "Emperor": II. Poco adagio, cantabile
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  date published: 2026-07-02T03:55:08Z
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String Quintet No. 4 in G Minor, K. 516*: III. Adagio ma non troppo
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String Quartet No. 14 in C-Sharp Minor, Op. 131: VI. Adagio quasi un poco andante
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subject of: OpenTimestamps Proof of Existence
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String Quartet No. 62 in C Major, Op. 76, No. 3, Hob.III:77, "Emperor": III. Menuetto
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subject of: OpenTimestamps Proof of Existence
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String Quintet No. 4 in G Minor, K. 516*: IV. Adagio - Allegro
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String Quartet No. 14 in C-Sharp Minor, Op. 131: VII. Allegro
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String Quartet No. 62 in C Major, Op. 76, No. 3, Hob.III:77, "Emperor": IV. Finale: Presto
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Keyboard Trio No. 25 in G Major, Hob.XV:25, "Gypsy Rondo": I. Andante
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Keyboard Trio No. 25 in G Major, Hob.XV:25, "Gypsy Rondo": II. Poco adagio
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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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Keyboard Trio No. 25 in G Major, Hob.XV:25, "Gypsy Rondo": III. Rondo all'Ongarese: Presto
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duration: PT3M25S
duration ms: 205946
explicit: false
by artist: Joseph Haydn
by artist: Kungsbacka Piano Trio
in album: Great Chamber Music
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191036309
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c42abda15cfd1ba1f87a83500a57d4a827c76ac1df9ce9529dfb3b044b180f6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/HKI191036309.
  date published: 2026-07-02T11:34:59Z
audio: Keyboard Trio No. 25 in G Major, Hob.XV:25, "Gypsy Rondo": III. Rondo all'Ongarese: Presto
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Mozart: Clarinet Quintets
type: MusicAlbum
date published: 1993-06-17
track: Clarinet Quintet in A Major, K. 581: I. Allegro
track: Clarinet Quintet in A Major, K. 581: II. Larghetto
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  by artist: Wolfgang Amadeus Mozart
  by artist: József Balogh
  by artist: Danubius Quartet
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  genre: classical
  genre: classical-era
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  additional property: OTSVerificationAPI
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  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
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    date published: 2026-07-07T14:50:41Z
  audio: Clarinet Quintet in A Major, K. 581: II. Larghetto
    type: AudioObject
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    additional property: Mode (Major/Minor)
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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: Instrumentalness
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    additional property: Liveness
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    additional property: Valence (Positivity)
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track: Violin Sonata No. 28 in E-Flat Major, K. 380 (arr. J. Andre): I. Allegro maestoso
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  by artist: Wolfgang Amadeus Mozart
  by artist: Johann André
  by artist: József Balogh
  by artist: Danubius Quartet
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  additional property: CopyrightID
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  additional property: OTSVerificationAPI
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  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 0xf48278dab06ca64f01d4816624a30733885c459cb925cd52b7826a4fdc54e8bb. 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/HKI199274105.
    date published: 2026-07-08T03:22:41Z
  audio: Violin Sonata No. 28 in E-Flat Major, K. 380 (arr. J. Andre): I. Allegro maestoso
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    additional property: Mode (Major/Minor)
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    additional property: Danceability
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    additional property: Valence (Positivity)
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Victorious Primas
type: MusicAlbum
date published: 2015-06-01
track: When I Got to Know this Girl
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  duration: PT1M51S
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  by artist: Karoly Puka
  by artist: Gipsy Band of Karoly Puka
  in album: Victorious Primas
    type: MusicAlbum
    date published: 2015-06-01
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  additional property: CopyrightID
  additional property: CopyrightStatus
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSVerificationAPI
    type: PropertyValue
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  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 0xbf26997b99a61bb2b0874d8799bda677953c9ba431528cfacb74172730e89054. 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/HUA251020809.
    date published: 2026-07-08T03:20:19Z
  audio: When I Got to Know this Girl
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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: Valence (Positivity)
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    additional property: Loudness (dB)
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track: I Have a Few Lovers
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  duration: PT1M26S
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  by artist: Karoly Puka
  by artist: Gipsy Band of Karoly Puka
  in album: Victorious Primas
    type: MusicAlbum
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  additional property: CopyrightStatus
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  additional property: OTSVerificationAPI
    type: PropertyValue
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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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564df95b63152f9593d09ec1bc29ea9b776cd23f2b98c3d852dc70a6bd2f7ff0. 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/HUA251020812.
    date published: 2026-07-08T08:56:20Z
  audio: I Have a Few Lovers
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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: 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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track: Concert Csardas in B Minor (Waving, Swaying Read)
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  by artist: Frigyes Marcali
  by artist: Karoly Puka
  by artist: Gipsy Band of Karoly Puka
  in album: Victorious Primas
    type: MusicAlbum
    date published: 2015-06-01
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  additional property: CopyrightID
  additional property: CopyrightStatus
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Concert Csardas in B Minor (Waving, Swaying Read)
track: Concert Fast Csardas in A major
track: You May, You May, You May

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/957118

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA251020815

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 0xc369b8f149f45b12dc64ee06d8dcca378a3d31e73e522f6b24e3a89ccc215d9a. 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/HUA251020815.
date published: 2026-07-08T03:20:19Z

Concert Csardas in B Minor (Waving, Swaying Read)
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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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additional property: Energy
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additional property: Speechiness
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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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Concert Fast Csardas in A major
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duration: PT4M17S
duration ms: 257106
explicit: false
by artist: Anonymous
by artist: Karoly Puka
by artist: Gipsy Band of Karoly Puka
in album: Victorious Primas
  type: MusicAlbum
  date published: 2015-06-01
isrc code: HUA251020816
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
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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 0xedfdd4062f64622ef494302e909f26b626603aa1632e38753c9f18c55f5bedfd. 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/HUA251020816.
  date published: 2026-07-08T03:53:27Z
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You May, You May, You May
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by artist: Gipsy Band of Karoly Puka
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: You May, You May, You May
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Classical Music for Dinner Parties
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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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track: Holberg Suite, Op. 40: III. Gavotte (Version for Orchestra)
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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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track: Dolly Suite, Op. 56: I. Berceuse
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  audio: Dolly Suite, Op. 56: I. Berceuse
track: Cello Sonata in G Minor, Op. 19: III. Andante

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OpenTimestamps Proof of Existence
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date published: 2026-07-08T03:53:27Z

Dolly Suite, Op. 56: I. Berceuse
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Cello Sonata in G Minor, Op. 19: III. Andante
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by artist: Michael Grebanier
by artist: Janet Guggenheim
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Cello Sonata in G Minor, Op. 19: III. Andante
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From Beautiful Beginnings
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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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Purple Classics Presents: Quiet Time – The Music of Mozart
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Ragadozók
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Horen - Lernen - Wachsen: Music for Babies and Children
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Rom sam ame ! Traditional Gypsy Music from Hungary
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Sarabande - Classical Favourites for Relaxing and Dreaming
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Lord
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Yiddish Songs As Sung by Balazs Fellegi
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