Bella Davidovich
type: MusicGroup
genre: classical
description: Bella Mikhaylovna Davidovich (; born July 16, 1928) is a Soviet and American pianist. Biography Davidovich was born in Baku, Azerbaijan SSR, into a Jewish family of musicians and began studying piano
popularity: 25
followers: 918
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subject of: OpenTimestamps Proof of Existence
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album: Bella Davidovich. Beethoven, Chopin
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  date published: 2018-11-23
  track: Grande valse brillante, Op. 18
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    by artist: Bella Davidovich
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      date published: 2018-11-23
    genre: classical
    genre: early-romantic-era
    genre: polish-classical
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-08T03:20:19Z
    audio: Grande valse brillante, Op. 18
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  track: Waltzes, Op. 64: No. 2 in C-Sharp Minor
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-29T22:48:59Z
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album: Ravel: The Works for Violin & Piano
album: Grieg: The Violin Sonatas
album: Grieg: Piano Concerto - Holberg Suite - Lyric Suite
album: Mendelssohn, Felix: Piano Concerto No. 1 / Chausson, E.: Concerto for Violin, Piano and Strings
album: Chopin: Klavierkonzerte Nr.1, Op.11 & Nr.2, Op.21
album: Sitkovetsky, Davidovich, Hudeček play Haydn
album: Chopin: 24 Preludes, Polonaise No. 4, Rondeau, Barcarolle (Bella Davidovich — Complete Philips Recordings, Vol. 3)
album: Prokofiev & Scriabin: Piano Works (Bella Davidovich — Complete Philips Recordings, Vol. 8)
album: Chopin: Four Ballades, Four Impromptus (Bella Davidovich — Complete Philips Recordings, Vol. 5)
album: Chopin: Piano Concerto No. 2, Krakowiak (Bella Davidovich — Complete Philips Recordings, Vol. 3)
album: Rachmaninoff: Paganini Rhapsody, Saint-Saens: Piano Concerto No. 2 (Bella Davidovich — Complete Philips Recordings, Vol. 7)
album: Chopin: Piano Concerto No. 1, Andante spianato (Bella Davidovich — Complete Philips Recordings, Vol. 2)
album: Schumann: Carnaval, Humoreske (Bella Davidovich — Complete Philips Recordings, Vol. 6)
album: Beethoven: Piano Sonatas Nos. 18, 14, Für Elise (Bella Davidovich — Complete Philips Recordings, Vol. 1)
track: Rhapsody on a Theme by Paganini, Op. 43: Variation 18
track: Piano Concerto No. 2 in G Minor, Op. 22, R. 190: I. Andante sostenuto
track: Piano Concerto No. 2 in G Minor, Op. 22, R. 190: II. Allegro scherzando
track: Piano Concerto No. 2 in G Minor, Op. 22, R. 190: III. Presto

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Ravel: The Works for Violin & Piano
type: MusicAlbum
date published: 2016-01-01

Grieg: The Violin Sonatas
type: MusicAlbum
date published: 2016-01-01

Grieg: Piano Concerto - Holberg Suite - Lyric Suite
type: MusicAlbum
date published: 2012-05-01

Mendelssohn, Felix: Piano Concerto No. 1 / Chausson, E.: Concerto for Violin, Piano and Strings
type: MusicAlbum
date published: 2008-01-01

Chopin: Klavierkonzerte Nr.1, Op.11 & Nr.2, Op.21
type: MusicAlbum
date published: 1998-01-01

Sitkovetsky, Davidovich, Hudeček play Haydn
type: MusicAlbum
date published: 1997-01-31

Chopin: 24 Preludes, Polonaise No. 4, Rondeau, Barcarolle (Bella Davidovich — Complete Philips Recordings, Vol. 3)
type: MusicAlbum
date published: 1987

Prokofiev & Scriabin: Piano Works (Bella Davidovich — Complete Philips Recordings, Vol. 8)
type: MusicAlbum
date published: 1986

Chopin: Four Ballades, Four Impromptus (Bella Davidovich — Complete Philips Recordings, Vol. 5)
type: MusicAlbum
date published: 1984
track: Ballade No. 1 in G Minor, Op. 23
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  by artist: Frédéric Chopin
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    date published: 1984
  genre: classical
  genre: early-romantic-era
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    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:22:41Z
  audio: Ballade No. 1 in G Minor, Op. 23
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track: Impromptu No. 4 in C-Sharp Minor, Op. 66 "Fantaisie-Impromptu"
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  by artist: Frédéric Chopin
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  additional property: OTSVerifyInstructions
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    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-31T00:26:26Z
  audio: Impromptu No. 4 in C-Sharp Minor, Op. 66 "Fantaisie-Impromptu"
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Chopin: Piano Concerto No. 2, Krakowiak (Bella Davidovich — Complete Philips Recordings, Vol. 3)
type: MusicAlbum
date published: 1983
track: Piano Concerto No. 2 in F Minor, Op. 21: I. Maestoso
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  by artist: Frédéric Chopin
  by artist: Bella Davidovich
  by artist: London Symphony Orchestra
  by artist: Sir Neville Marriner
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    type: MusicAlbum
    date published: 1983
  popularity: 2
  genre: classical
  genre: early-romantic-era
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  additional property: OTSVerifyInstructions
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    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:22:41Z
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  audio: Piano Concerto No. 2 in F Minor, Op. 21: III. Allegro vivace

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date published: 2026-07-31T21:25:57Z

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  subject of: OpenTimestamps Proof of Existence
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track: Rhapsody on a Theme of Paganini, Op. 43: Variation 7. Meno mosso, a tempo moderato
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  audio: Rhapsody on a Theme of Paganini, Op. 43: Variation 7. Meno mosso, a tempo moderato
track: Rhapsody on a Theme of Paganini, Op. 43: Variation 8. Tempo I
track: Rhapsody on a Theme of Paganini, Op. 43: Variation 9. L'istesso tempo
track: Rhapsody on a Theme of Paganini, Op. 43: Variation 10. L'istesso tempo
track: Rhapsody on a Theme of Paganini, Op. 43: Variation 11. Moderato
track: Rhapsody on a Theme of Paganini, Op. 43: Variation 12. Tempo di minuetto
track: Rhapsody on a Theme of Paganini, Op. 43: Variation 16. Allegretto
track: Rhapsody on a Theme of Paganini, Op. 43: Variation 17. Allegretto
track: Rhapsody on a Theme by Paganini, Op. 43: Variation 18. Andante cantabile
track: Rhapsody on a Theme of Paganini, Op. 43: Variation 19. A tempo vivace
track: Rhapsody on a Theme of Paganini, Op. 43: Variation 20. Un poco più vivo
track: Rhapsody on a Theme of Paganini, Op. 43: Variation 22. Marziale. Un poco più vivo (Alla breve)
track: Rhapsody on a Theme of Paganini, Op. 43: Variation 23. L'istesso tempo
track: Rhapsody on a Theme of Paganini, Op. 43: Variation 24. A tempo un poco meno mosso
track: Piano Concerto No. 2 in G Minor, Op. 22, R. 190: I. Andante sostenuto
track: Piano Concerto No. 2 in G Minor, Op. 22, R. 190: II. Allegro scherzando
track: Piano Concerto No. 2 in G Minor, Op. 22, R. 190: III. Presto

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  date published: 2026-07-31T08:26:41Z
audio: Rhapsody on a Theme of Paganini, Op. 43: Variation 8. Tempo I
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Rhapsody on a Theme of Paganini, Op. 43: Variation 9. L'istesso tempo
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duration: PT0M32S
duration ms: 32770
explicit: false
by artist: Sergei Rachmaninoff
by artist: Bella Davidovich
by artist: Royal Concertgebouw Orchestra
by artist: Neeme Järvi
in album: Rachmaninoff: Paganini Rhapsody, Saint-Saens: Piano Concerto No. 2 (Bella Davidovich — Complete Philips Recordings, Vol. 7)
  type: MusicAlbum
  date published: 1982
genre: classical
genre: classical-piano
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T14:36:16Z
audio: Rhapsody on a Theme of Paganini, Op. 43: Variation 9. L'istesso tempo
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Rhapsody on a Theme of Paganini, Op. 43: Variation 10. L'istesso tempo
type: MusicRecording
duration: PT0M54S
duration ms: 54883
explicit: false
by artist: Sergei Rachmaninoff
by artist: Bella Davidovich
by artist: Royal Concertgebouw Orchestra
by artist: Neeme Järvi
in album: Rachmaninoff: Paganini Rhapsody, Saint-Saens: Piano Concerto No. 2 (Bella Davidovich — Complete Philips Recordings, Vol. 7)
  type: MusicAlbum
  date published: 1982
genre: classical
genre: classical-piano
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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 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: 2026-07-30T18:23:33Z
audio: Rhapsody on a Theme of Paganini, Op. 43: Variation 10. L'istesso tempo
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Rhapsody on a Theme of Paganini, Op. 43: Variation 11. Moderato
type: MusicRecording
duration: PT1M25S
duration ms: 85776
explicit: false
by artist: Sergei Rachmaninoff
by artist: Bella Davidovich
by artist: Royal Concertgebouw Orchestra
by artist: Neeme Järvi
in album: Rachmaninoff: Paganini Rhapsody, Saint-Saens: Piano Concerto No. 2 (Bella Davidovich — Complete Philips Recordings, Vol. 7)
  type: MusicAlbum
  date published: 1982
genre: classical
genre: classical-piano
isrc code: NLA508140012
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
  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 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: Rhapsody on a Theme of Paganini, Op. 43: Variation 11. Moderato
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Rhapsody on a Theme of Paganini, Op. 43: Variation 12. Tempo di minuetto
type: MusicRecording
duration: PT1M15S
duration ms: 75471
explicit: false
by artist: Sergei Rachmaninoff
by artist: Bella Davidovich
by artist: Royal Concertgebouw Orchestra
by artist: Neeme Järvi
in album: Rachmaninoff: Paganini Rhapsody, Saint-Saens: Piano Concerto No. 2 (Bella Davidovich — Complete Philips Recordings, Vol. 7)
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genre: classical
genre: classical-piano
isrc code: NLA508140013
additional property: CopyrightID
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T18:23:33Z
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: 2026-07-30T18:23:33Z
audio: Rhapsody on a Theme of Paganini, Op. 43: Variation 12. Tempo di minuetto
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Rhapsody on a Theme of Paganini, Op. 43: Variation 16. Allegretto
type: MusicRecording
duration: PT1M32S
duration ms: 92145
explicit: false
by artist: Sergei Rachmaninoff
by artist: Bella Davidovich
by artist: Royal Concertgebouw Orchestra
by artist: Neeme Järvi
in album: Rachmaninoff: Paganini Rhapsody, Saint-Saens: Piano Concerto No. 2 (Bella Davidovich — Complete Philips Recordings, Vol. 7)
  type: MusicAlbum
  date published: 1982
genre: classical
genre: classical-piano
isrc code: NLA508140017
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0xa4b514b8fd1e64db9175b55987639d4652c55bd63120bd21b70650aef6f3726a
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960459
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508140017
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T20:22:46Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b514b8fd1e64db9175b55987639d4652c55bd63120bd21b70650aef6f3726a. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/NLA508140017.
  date published: 2026-07-31T20:22:46Z
audio: Rhapsody on a Theme of Paganini, Op. 43: Variation 16. Allegretto
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Rhapsody on a Theme of Paganini, Op. 43: Variation 17. Allegretto
type: MusicRecording
duration: PT1M50S
duration ms: 110090
explicit: false
by artist: Sergei Rachmaninoff
by artist: Bella Davidovich
by artist: Royal Concertgebouw Orchestra
by artist: Neeme Järvi
in album: Rachmaninoff: Paganini Rhapsody, Saint-Saens: Piano Concerto No. 2 (Bella Davidovich — Complete Philips Recordings, Vol. 7)
  type: MusicAlbum
  date published: 1982
genre: classical
genre: classical-piano
isrc code: NLA508140018
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960435
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508140018
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T16:33:26Z
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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047080adcd4ce7fa683ec5738a0a93e4e61ca1522efc6039261be766cf362428. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/NLA508140018.
  date published: 2026-07-31T16:33:26Z
audio: Rhapsody on a Theme of Paganini, Op. 43: Variation 17. Allegretto
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Rhapsody on a Theme by Paganini, Op. 43: Variation 18. Andante cantabile
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duration: PT2M37S
duration ms: 157811
explicit: false
by artist: Sergei Rachmaninoff
by artist: Bella Davidovich
by artist: Royal Concertgebouw Orchestra
by artist: Neeme Järvi
in album: Rachmaninoff: Paganini Rhapsody, Saint-Saens: Piano Concerto No. 2 (Bella Davidovich — Complete Philips Recordings, Vol. 7)
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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
  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: 2026-06-13T12:47:07Z
audio: Rhapsody on a Theme by Paganini, Op. 43: Variation 18. Andante cantabile
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Rhapsody on a Theme of Paganini, Op. 43: Variation 19. A tempo vivace
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duration: PT0M36S
duration ms: 36913
explicit: false
by artist: Sergei Rachmaninoff
by artist: Bella Davidovich
by artist: Royal Concertgebouw Orchestra
by artist: Neeme Järvi
in album: Rachmaninoff: Paganini Rhapsody, Saint-Saens: Piano Concerto No. 2 (Bella Davidovich — Complete Philips Recordings, Vol. 7)
  type: MusicAlbum
  date published: 1982
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
  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: 2026-07-31T09:09:19Z
audio: Rhapsody on a Theme of Paganini, Op. 43: Variation 19. A tempo vivace
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Rhapsody on a Theme of Paganini, Op. 43: Variation 20. Un poco più vivo
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duration: PT0M38S
duration ms: 38132
explicit: false
by artist: Sergei Rachmaninoff
by artist: Bella Davidovich
by artist: Royal Concertgebouw Orchestra
by artist: Neeme Järvi
in album: Rachmaninoff: Paganini Rhapsody, Saint-Saens: Piano Concerto No. 2 (Bella Davidovich — Complete Philips Recordings, Vol. 7)
  type: MusicAlbum
  date published: 1982
genre: classical
genre: classical-piano
isrc code: NLA508140020
additional property: CopyrightID
additional property: CopyrightStatus
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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 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: 2026-07-30T22:27:30Z
audio: Rhapsody on a Theme of Paganini, Op. 43: Variation 20. Un poco più vivo
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Rhapsody on a Theme of Paganini, Op. 43: Variation 22. Marziale. Un poco più vivo (Alla breve)
type: MusicRecording
duration: PT1M42S
duration ms: 102632
explicit: false
by artist: Sergei Rachmaninoff
by artist: Bella Davidovich
by artist: Royal Concertgebouw Orchestra
by artist: Neeme Järvi
in album: Rachmaninoff: Paganini Rhapsody, Saint-Saens: Piano Concerto No. 2 (Bella Davidovich — Complete Philips Recordings, Vol. 7)
  type: MusicAlbum
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genre: classical
genre: classical-piano
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508140022
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-08T03:20:19Z
audio: Rhapsody on a Theme of Paganini, Op. 43: Variation 22. Marziale. Un poco più vivo (Alla breve)
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Rhapsody on a Theme of Paganini, Op. 43: Variation 23. L'istesso tempo
type: MusicRecording
duration: PT0M57S
duration ms: 57854
explicit: false
by artist: Sergei Rachmaninoff
by artist: Bella Davidovich
by artist: Royal Concertgebouw Orchestra
by artist: Neeme Järvi
in album: Rachmaninoff: Paganini Rhapsody, Saint-Saens: Piano Concerto No. 2 (Bella Davidovich — Complete Philips Recordings, Vol. 7)
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genre: classical
genre: classical-piano
isrc code: NLA508140023
additional property: CopyrightID
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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
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508140023
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T00:26:26Z
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: 2026-07-31T00:26:26Z
audio: Rhapsody on a Theme of Paganini, Op. 43: Variation 23. L'istesso tempo
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Rhapsody on a Theme of Paganini, Op. 43: Variation 24. A tempo un poco meno mosso
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duration: PT1M29S
duration ms: 89331
explicit: false
by artist: Sergei Rachmaninoff
by artist: Bella Davidovich
by artist: Royal Concertgebouw Orchestra
by artist: Neeme Järvi
in album: Rachmaninoff: Paganini Rhapsody, Saint-Saens: Piano Concerto No. 2 (Bella Davidovich — Complete Philips Recordings, Vol. 7)
  type: MusicAlbum
  date published: 1982
genre: classical
genre: classical-piano
isrc code: NLA508140024
additional property: CopyrightID
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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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  value: https://blockstream.info/api/block-height/960368
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508140024
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T08:26:41Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7889b30dfb444ee8ffde9bd50f093fcc39017b197cefeba512e91bf955bd65c2. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NLA508140024.
  date published: 2026-07-31T08:26:41Z
audio: Rhapsody on a Theme of Paganini, Op. 43: Variation 24. A tempo un poco meno mosso
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Piano Concerto No. 2 in G Minor, Op. 22, R. 190: I. Andante sostenuto
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duration: PT10M35S
duration ms: 635511
explicit: false
by artist: Camille Saint-Saëns
by artist: Bella Davidovich
by artist: Royal Concertgebouw Orchestra
by artist: Neeme Järvi
in album: Rachmaninoff: Paganini Rhapsody, Saint-Saens: Piano Concerto No. 2 (Bella Davidovich — Complete Philips Recordings, Vol. 7)
  type: MusicAlbum
  date published: 1982
genre: classical
genre: late-romantic-era
genre: french-romanticism
isrc code: NLA508109302
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightChainExplorerURL
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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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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T17:41:38Z
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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Piano Concerto No. 2 in G Minor, Op. 22, R. 190: II. Allegro scherzando
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Piano Concerto No. 2 in G Minor, Op. 22, R. 190: III. Presto
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Chopin: Piano Concerto No. 1, Andante spianato (Bella Davidovich — Complete Philips Recordings, Vol. 2)
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  audio: Piano Concerto No. 1 in E Minor, Op. 11: III. Rondo (Vivace)

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Piano Concerto No. 1 in E Minor, Op. 11: III. Rondo (Vivace)
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Schumann: Carnaval, Humoreske (Bella Davidovich — Complete Philips Recordings, Vol. 6)
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Beethoven: Piano Sonatas Nos. 18, 14, Für Elise (Bella Davidovich — Complete Philips Recordings, Vol. 1)
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Rhapsody on a Theme by Paganini, Op. 43: Variation 18
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Piano Concerto No. 2 in G Minor, Op. 22, R. 190: I. Andante sostenuto
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Piano Concerto No. 2 in G Minor, Op. 22, R. 190: II. Allegro scherzando
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Piano Concerto No. 2 in G Minor, Op. 22, R. 190: III. Presto
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