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genre: chamber music
genre: classical piano
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subject of: OpenTimestamps Proof of Existence
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album: Schubert For Study
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  date published: 2021-12-24
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    by artist: Jenő Jandó
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-30T12:51:24Z
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  track: Wiegenlied, Op. 98, No. 2, D. 498 (arr. for orchestra)
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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: 6 Moments Musicaux, Op. 94, D. 780: No. 2 in A-flat Major: Andantino
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  track: 5 Stücke im Volkston (5 Pieces in Folk Style), Op. 102 (version for cello and piano): No. 2. Langsam
  track: Piano Quintet In A Major, Op. 114, D. 667, "die Forelle" (The Trout): Ii. Andante
  track: Symphony No. 8 in B Minor, D. 759, "unfinished": Ii. Andante con moto
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album: Beethoven: Symphony No. 4 & Piano Concerto No. 4 (Resound Collection, Vol. 7)
album: Beethoven: Symphony No. 8 & Concerto for Piano after the Violin Concerto (Resound Collection, Vol. 6)
album: 20th Century Foxtrots, Vol. 4: France & Belgium

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6 Moments Musicaux, Op. 94, D. 780: No. 2 in A-flat Major: Andantino
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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. 6 in C Major, D. 589: Ii. Andante
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by artist: Budapest Failoni Chamber Orchestra
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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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5 Stücke im Volkston (5 Pieces in Folk Style), Op. 102 (version for cello and piano): No. 2. Langsam
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T02:51:48Z
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Piano Quintet In A Major, Op. 114, D. 667, "die Forelle" (The Trout): Ii. Andante
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Piano Quintet In A Major, Op. 114, D. 667, "die Forelle" (The Trout): Ii. Andante
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Symphony No. 8 in B Minor, D. 759, "unfinished": Ii. Andante con moto
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duration: PT11M13S
duration ms: 673000
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by artist: Franz Schubert
by artist: Slovak Philharmonic
by artist: Michael Halasz
in album: Schubert For Study
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  date published: 2021-12-24
popularity: 1
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: 2026-07-30T17:41:38Z
audio: Symphony No. 8 in B Minor, D. 759, "unfinished": Ii. Andante con moto
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Piano Trio No. 2 in E-flat Major, Op. 100, D. 929: Ii. Andante con moto
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duration: PT8M41S
duration ms: 521065
explicit: false
by artist: Franz Schubert
by artist: Stuttgart Piano Trio
in album: Schubert For Study
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  date published: 2021-12-24
popularity: 1
genre: classical
genre: classical-piano
genre: chamber-music
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additional property: CopyrightID
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-30T15:42:38Z
audio: Piano Trio No. 2 in E-flat Major, Op. 100, D. 929: Ii. Andante con moto
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6 Moments Musicaux, Op. 94, D. 780: No. 6 in A-flat Major: Allegretto
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duration: PT6M13S
duration ms: 373973
explicit: false
by artist: Franz Schubert
by artist: Jenő Jandó
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  date published: 2021-12-24
popularity: 1
genre: classical
genre: classical-piano
genre: chamber-music
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T06:42:11Z
audio: 6 Moments Musicaux, Op. 94, D. 780: No. 6 in A-flat Major: Allegretto
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Adagio and Allegro, Op. 70 (version for cello and piano): Adagio
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duration: PT4M16S
duration ms: 256320
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by artist: Maria Kliegel
by artist: Kristin Merscher
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popularity: 25
genre: classical
genre: classical-piano
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T12:47:07Z
audio: Adagio and Allegro, Op. 70 (version for cello and piano): Adagio
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Piano Sonata No. 3 in E Major, D. 459: Piano Sonata No. 3 in E Major, D. 459
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duration: PT5M50S
duration ms: 350480
explicit: false
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by artist: Gottlieb Wallisch
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popularity: 1
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: 2026-07-31T02:51:48Z
audio: Piano Sonata No. 3 in E Major, D. 459: Piano Sonata No. 3 in E Major, D. 459
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Beethoven: Symphony No. 4 & Piano Concerto No. 4 (Resound Collection, Vol. 7)
type: MusicAlbum
date published: 2018-11-02
track: Piano Concerto No. 4 in G Major, Op. 58: I. Allegro moderato
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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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    date published: 2026-07-30T17:41:38Z
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-30T15:42:38Z
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  subject of: OpenTimestamps Proof of Existence
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track: Symphony No. 8 in F Major, Op. 93: IV. Allegro vivace

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

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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T02:21:55Z
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20th Century Foxtrots, Vol. 4: France & Belgium
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T03:30:09Z
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