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album: A Tribute to Fritz Kreisler
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album: 100 Violin Masterworks
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album: Heifetz Plays the Best of Bach, Mozart, Paganini & Vitali
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album: Greatest Hits
album: Gershwin: Selections, Music of France
album: Liebesfreud Liebesleid - Homage to Fritz Kreisler
album: Sarasate: Zigeunerweisen, Op. 20, Saint-Saëns: Havanaise, Op. 83
album: Heifetz (Various Works)
album: Ich mag keine Klassik, aber das gefällt mir!, Vol. 5
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album: Saint-Saëns: Sonata No. 1, Op. 75, in D Minor, Sibelius, Wieniawski, Rachmaninoff, de Falla
album: Heifetz Violin Greatest Hits
album: Artists Of The Century: Jascha Heifetz
album: Heifetz: Encores, Vol. 1 (1946-1956)
album: 10 Great Composers: Duets

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Tango, Op.165, No.2 - Arr. Fritz Kreisler: Andantino
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Larghetto - Arr. Fritz Kreisler: Andante con moto
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The Four Seasons - Violin Concerto in E Major, Op. 8 No. 1, RV 269 "Spring": II. Largo e pianissimo sempre
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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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Geschichte 1 - Teil 04
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subject of: OpenTimestamps Proof of Existence
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Geschichte 1 - Teil 05
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subject of: OpenTimestamps Proof of Existence
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Die Libelle, Op. 204
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Carnival of the Animals, R. 125: Aquarium
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audio: Carnival of the Animals, R. 125: Aquarium
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Geschichte 1 - Teil 08
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Die Forelle, D. 550 (Arr. for Cello, Piano and Contrabass)
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Geschichte 1 - Teil 09
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subject of: OpenTimestamps Proof of Existence
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Burlesque de Quixotte, TWV 55:G10: VI. The Gallop of Rosinante. VII. The Gallop of Sancho Pansa's Donkey
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subject of: OpenTimestamps Proof of Existence
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Geschichte 1 - Teil 10
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Histoires, No. 2: II. Le petit âne blanc
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Geschichte 1 - Teil 12
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Horse and Buggy
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Debussy: Complete Chamber Music
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  genre: classical
  genre: impressionism
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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
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    date published: 2026-07-08T03:20:19Z
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track: Piano Trio No. 1 in G major, L.3: 3. Andante espressivo
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  by artist: Joachim Trio
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  genre: classical
  genre: impressionism
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  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Piano Trio No. 1 in G major, L.3: 3. Andante espressivo

CopyrightChainExplorerURL
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OTSBitcoinBlockVerifyURL
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value: https://blockstream.info/api/block-height/957124

OTSVerificationAPI
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value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199241303

OTSTimestamp
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OTSVerifyInstructions
type: PropertyValue
value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499c6e54482fa6fb3da5d6527ab0096e65a819590e88d1046f788e32b7c4783e. 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/HKI199241303.
date published: 2026-07-08T03:53:27Z

Piano Trio No. 1 in G major, L.3: 3. Andante espressivo
type: AudioObject
additional property: Tempo (BPM)
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additional property: Musical Key
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At Home with Beethoven
type: MusicAlbum
date published: 2020-04-04
track: Symphony No. 5 in C Minor, Op. 67: I. Allegro con brio
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  by artist: Teodor Currentzis
  by artist: musicAeterna
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  genre: classical
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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
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a423d07366e707877de8a98e3828b5dfcdb6fbf737615c166daa748a2c864a. 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/USSM12000665.
    date published: 2026-07-08T08:56:20Z
  audio: Symphony No. 5 in C Minor, Op. 67: I. Allegro con brio
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
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    additional property: Danceability
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    additional property: Energy
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    additional property: Speechiness
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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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  by artist: Igor Levit
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    type: MusicAlbum
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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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826d66cfed3ef797b873376536e7d082a653e7a202b4ed2c70391275aa9860f1. 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/USSM11902399.
    date published: 2026-07-08T03:20:19Z
  audio: Piano Sonata No. 14 in C-sharp minor, Op. 27, No. 2, "Moonlight": I. Adagio sostenuto
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track: Piano Sonata No. 8 in C minor, Op. 13, "Pathétique": II. Adagio cantabile
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  by artist: Ludwig van Beethoven
  by artist: Igor Levit
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    type: MusicAlbum
    date published: 2020-04-04
  popularity: 3
  genre: classical
  genre: classical-piano
  genre: chamber-music
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  additional property: CopyrightID
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  additional property: OTSBitcoinBlock
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  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Piano Sonata No. 8 in C minor, Op. 13, "Pathétique": II. Adagio cantabile
track: Beethoven's 5 Secrets
track: Moonlight
track: These Days

CopyrightRegisteredAt
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CopyrightChainExplorerURL
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OTSHash
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OTSBitcoinBlock
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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11902373

OTSTimestamp
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OTSVerifyInstructions
type: PropertyValue
value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305ea2a91021da65a50dfe46a4a34b49ff64ecaf3b7b70e80257290c50e78953. 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/USSM11902373.
date published: 2026-07-08T03:20:19Z

Piano Sonata No. 8 in C minor, Op. 13, "Pathétique": II. Adagio cantabile
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additional property: Mode (Major/Minor)
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additional property: Valence (Positivity)
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Beethoven's 5 Secrets
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duration: PT5M9S
duration ms: 309773
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by artist: Ludwig van Beethoven
by artist: Ryan Tedder
by artist: Steven Sharp Nelson
by artist: Al van der Beek
by artist: Kayson Brown
by artist: The Piano Guys
by artist: Lyceum Philharmonic at American Heritage School
by artist: Julie Ann Nelson
by artist: John Nelson
in album: At Home with Beethoven
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  date published: 2020-04-04
popularity: 28
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
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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: 2026-06-13T13:32:09Z
audio: Beethoven's 5 Secrets
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Moonlight
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duration: PT3M26S
duration ms: 206466
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by artist: Steven Sharp Nelson
by artist: Al van der Beek
by artist: The Piano Guys
in album: At Home with Beethoven
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popularity: 4
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: 2026-07-08T03:53:27Z
audio: Moonlight
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Violin Concerto No. 2 in E, BWV 1042: 1. Allegro
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Violin Concerto No. 2 in B Minor, Op. 7, MS. 48: III. Rondo à la clochette "La campanella". Allegretto moderato - Excerpt
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Partita for Violin Solo No. 3 in E Major, BWV 1006: I. Preludio
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Legende, Op. 17
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Recomposed by Max Richter: Vivaldi, the Four Seasons: Spring 1
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Double Concerto for 2 Violins, Strings, and Continuo in D Minor, BWV 1043: II. Largo ma non tanto
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24 Caprices for Violin, Op. 1, MS. 25: No. 24 in A Minor
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Echorus
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"Ich steh mit einem Fuß im Grabe", Cantata BWV 156: Sinfonia (Arr. For Violin, Strings And Continuo)
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Méditation from Thaïs
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Preghiera (Arr. by Fritz Kreisler from Piano Concerto No. 2 in C Minor, Op. 18, 2nd Movement)
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Six Romances, Op. 6, TH 93: No. 1, Do Not Believe, My Friend. Moderato assai (Arr. for Violin and Piano)
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I giorni (Arr. For Violin, Piano And String Orchestra)
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Yumeji's Theme - From "In The Mood For Love"
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by artist: Gidon Kremer
by artist: Kremerata Baltica
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  date published: 2018-02-16
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T07:53:57Z
audio: Yumeji's Theme - From "In The Mood For Love"
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St. Matthew Passion, BWV 244 / Part Two: No. 39 Aria: "Erbarme dich" (Arr. For Oboe d’amore, Violin, Strings And Continuo)
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duration: PT6M46S
duration ms: 406213
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by artist: Johann Sebastian Bach
by artist: Lisa Batiashvili
by artist: François Leleux
by artist: Chamber Orchestra of the Bavarian Radio
by artist: Radoslaw Szulc
in album: 100 Violin Masterworks
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  date published: 2018-02-16
popularity: 2
genre: classical
genre: classical-piano
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: St. Matthew Passion, BWV 244 / Part Two: No. 39 Aria: "Erbarme dich" (Arr. For Oboe d’amore, Violin, Strings And Continuo)
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Debussy Chill & Relax
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date published: 2021-11-14

British Composers
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date published: 2020-06-06
track: Fantasia On Greensleeves
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  by artist: Vienna State Opera Orchestra
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T11:34:59Z
  audio: Fantasia On Greensleeves
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track: Silent noon
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  by artist: Bryn Terfel
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:22:41Z
  audio: Silent noon
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track: The Lark Ascending
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  by artist: Hilary Hahn
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  subject of: OpenTimestamps Proof of Existence
  audio: The Lark Ascending

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OTSTimestamp
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OTSVerifyInstructions
type: PropertyValue
value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582f5076896b7fdd7596a23e711dac1bde084900afb6d2b666b8bc4812d8b70c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEN960301630.
date published: 2026-07-02T03:30:09Z

The Lark Ascending
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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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RCA Red Seal Century - Soloists And Conductors
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date published: 1997-02-22
track: Light in Darkness
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T03:55:08Z
  audio: Light in Darkness
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track: Études d'exécution transcendante, S. 139: 5. Feux follets in B-Flat Major
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-06T07:53:57Z
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track: Préludes / Book 1, L.117: 1. Danseuses de Delphes
track: Préludes / Book 1, L.117: 2. Voiles
track: Préludes / Book 1, L.117: 3. Le vent dans la plaine
track: Préludes / Book 1, L.117: 4. Les sons et les parfums tournent dans l'air du soir
track: Préludes / Book 1, L.117: 5. Les collines d'Anacapri
track: Préludes / Book 1, L.117: 6. Des pas sur la neige
track: Préludes / Book 1, L.117: 7. Ce qu'a vu le vent d'ouest
track: Préludes / Book 1, L.117: 8. La fille aux cheveux de lin
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track: Préludes - Book 2, L.123: 1. Brouillards
track: Préludes - Book 2, L.123: 2. Feuilles mortes
track: Préludes - Book 2, L.123: 3. La puerta del vino
track: Préludes - Book 2, L.123: 4. "Les fées sont d'exquises danseuses"
track: Préludes - Book 2, L.123: 5. Bruyères
track: Préludes - Book 2, L.123: 6. "General Lavine" - eccentric
track: Préludes - Book 2, L.123: 7. La terrasse des audiences du clair de lune
track: Préludes - Book 2, L.123: 8. Ondine
track: Préludes - Book 2, L.123: 9. Hommage à S. Pickwick, Esq., P.P.M.P.C.
track: Préludes - Book 2, L.123: 10. Canope
track: Préludes - Book 2, L.123: 11. Les tierces alternées
track: Préludes - Book 2, L.123: 12. Feux d'artifice
track: 12 Etudes, L.136: 1. Pour les "cinq doigts" (d'après Monsieur Czerny)
track: 12 Etudes, L.136: 3. Pour les Quartes
track: Images - Book 1, L. 110: I. Reflets dans l'eau

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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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65bfb3fdb85955d06c934096a97944a3fc6679f7605669e0608c3806b8965592. 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/DEN961230304.
  date published: 2026-07-08T03:20:19Z
audio: Préludes / Book 1, L.117: 4. Les sons et les parfums tournent dans l'air du soir
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Préludes / Book 1, L.117: 5. Les collines d'Anacapri
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by artist: Claude Debussy
by artist: Pierre-Laurent Aimard
in album: Debussy: Complete Piano Works
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genre: classical
genre: impressionism
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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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T18:39:05Z
audio: Préludes / Book 1, L.117: 5. Les collines d'Anacapri
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Préludes / Book 1, L.117: 6. Des pas sur la neige
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by artist: Claude Debussy
by artist: Pierre-Laurent Aimard
in album: Debussy: Complete Piano Works
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genre: classical
genre: impressionism
genre: post-romantic-era
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additional property: CopyrightRegisteredAt
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd62e7750d285d508ab97df062ab05aefac162587180fb5b34c110984da41803. 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/DEN961230306.
  date published: 2026-07-08T03:20:19Z
audio: Préludes / Book 1, L.117: 6. Des pas sur la neige
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Préludes / Book 1, L.117: 7. Ce qu'a vu le vent d'ouest
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duration: PT3M47S
duration ms: 227080
explicit: false
by artist: Claude Debussy
by artist: Pierre-Laurent Aimard
in album: Debussy: Complete Piano Works
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genre: classical
genre: impressionism
genre: post-romantic-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: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98010dd8df995387de5ed14d49e870df261a1ebb9a2db71a95d0108b019f532. 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/DEN961230307.
  date published: 2026-07-08T03:22:41Z
audio: Préludes / Book 1, L.117: 7. Ce qu'a vu le vent d'ouest
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Préludes / Book 1, L.117: 8. La fille aux cheveux de lin
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duration: PT2M21S
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explicit: false
by artist: Claude Debussy
by artist: Pierre-Laurent Aimard
in album: Debussy: Complete Piano Works
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  date published: 2018-02-16
genre: classical
genre: impressionism
genre: post-romantic-era
isrc code: DEN961230308
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: 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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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Préludes / Book 1, L.117: 8. La fille aux cheveux de lin
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Préludes / Book 1, L.117: 9. La sérénade interrompue
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duration ms: 168360
explicit: false
by artist: Claude Debussy
by artist: Pierre-Laurent Aimard
in album: Debussy: Complete Piano Works
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  date published: 2018-02-16
genre: classical
genre: impressionism
genre: post-romantic-era
isrc code: DEN961230309
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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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6602bc43e274e5e9a7d6a40b49f97a106548037ca4ea754fef5a92b98280c4ae. 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/DEN961230309.
  date published: 2026-07-08T03:22:41Z
audio: Préludes / Book 1, L.117: 9. La sérénade interrompue
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  additional property: Mode (Major/Minor)
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Préludes / Book 1, L.117: 10. La cathédrale engloutie
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by artist: Claude Debussy
by artist: Pierre-Laurent Aimard
in album: Debussy: Complete Piano Works
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  date published: 2018-02-16
genre: classical
genre: impressionism
genre: post-romantic-era
isrc code: DEN961230310
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
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Préludes / Book 1, L.117: 10. La cathédrale engloutie
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Préludes / Book 1, L.117: 11. La danse de Puck
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explicit: false
by artist: Claude Debussy
by artist: Pierre-Laurent Aimard
in album: Debussy: Complete Piano Works
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  date published: 2018-02-16
genre: classical
genre: impressionism
genre: post-romantic-era
isrc code: DEN961230311
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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subject of: OpenTimestamps Proof of Existence
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audio: Préludes / Book 1, L.117: 11. La danse de Puck
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Préludes / Book 1, L.117: 12. Minstrels
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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audio: Préludes / Book 1, L.117: 12. Minstrels
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Préludes - Book 2, L.123: 1. Brouillards
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Préludes - Book 2, L.123: 1. Brouillards
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Préludes - Book 2, L.123: 2. Feuilles mortes
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Préludes - Book 2, L.123: 2. Feuilles mortes
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Préludes - Book 2, L.123: 3. La puerta del vino
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Préludes - Book 2, L.123: 3. La puerta del vino
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Préludes - Book 2, L.123: 4. "Les fées sont d'exquises danseuses"
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  date published: 2026-07-08T03:22:41Z
audio: Préludes - Book 2, L.123: 4. "Les fées sont d'exquises danseuses"
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Préludes - Book 2, L.123: 5. Bruyères
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audio: Préludes - Book 2, L.123: 5. Bruyères
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Préludes - Book 2, L.123: 6. "General Lavine" - eccentric
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Préludes - Book 2, L.123: 6. "General Lavine" - eccentric
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Préludes - Book 2, L.123: 7. La terrasse des audiences du clair de lune
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by artist: Pierre-Laurent Aimard
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Préludes - Book 2, L.123: 7. La terrasse des audiences du clair de lune
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Préludes - Book 2, L.123: 8. Ondine
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Préludes - Book 2, L.123: 8. Ondine
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Préludes - Book 2, L.123: 9. Hommage à S. Pickwick, Esq., P.P.M.P.C.
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Préludes - Book 2, L.123: 9. Hommage à S. Pickwick, Esq., P.P.M.P.C.
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Préludes - Book 2, L.123: 10. Canope
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subject of: OpenTimestamps Proof of Existence
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audio: Préludes - Book 2, L.123: 10. Canope
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Préludes - Book 2, L.123: 11. Les tierces alternées
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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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Préludes - Book 2, L.123: 12. Feux d'artifice
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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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12 Etudes, L.136: 1. Pour les "cinq doigts" (d'après Monsieur Czerny)
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12 Etudes, L.136: 3. Pour les Quartes
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Images - Book 1, L. 110: I. Reflets dans l'eau
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Jascha Heifetz plays Sonatas for Violin
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Ferguson: Sonata No. 1 in D Minor, Op. 2 - Khatchaturian: Sonata in G Minor, Op. 1 - Saint-Saëns: Sonata No. 1, Op. 75 - Gershwin: 3 Preludes & Porgy and Bess Selections (Heifetz Remastered)
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Sarasate: Danzas Españolas & Pieces by Ruggiero Ricci (Remastered 2023, New York 1961)
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track: Danzas Españolas No. 6: Zapateado, Op. 23 No. 2 - Remastered 2023, New York 1961
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Milestones of a Legend: Ruggiero Ricci, Vol. 5
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Sarasate: Orchestral & Chamber Works
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Heifetz Plays the Best of Bach, Mozart, Paganini & Vitali
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Live at the Dorothy Chandler Pavilion Los Angeles October 23, 1972 (Heifetz Remastered)
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Virtuoso Favorites
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Sarasate: Danzas Españolas; Introduction et Tarantelle; Caprice Basque; Serenata Andaluza (Ruggiero Ricci: Complete American Decca Recordings, Vol. 5)
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A Tribute to Kreisler (Ruggiero Ricci: Complete American Decca Recordings, Vol. 6)
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Beethoven: Sonata No. 9 in A Major, Op. 47 "Kreutzer" - Schubert: Fantasie in C Major, D. 934 - Debussy: Chansons de Bilitis & Children's Corner - Ravel: Valses nobles et sentimentales - Poul
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Mozart: Sonates pour violon et piano, K. 378 & 454 (Mono Version)
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OpenTimestamps Proof of Existence
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Sonata No. 1, Op. 13, in A: Andante
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track: Scottish Fantasy, Op. 46: II. Allegro - Redbook Stereo
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OpenTimestamps Proof of Existence
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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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Scottish Fantasy, Op. 46: III. Adagio - Andante sostenuto - Redbook Stereo
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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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Jascha Heifetz plays Beethoven (Sonatas & Concerto)
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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
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    date published: 2026-07-02T03:55:08Z
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track: Sonata for Piano and Violin No. 5 in F Major, Op. 24 "Spring": I. Allegro
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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: Violin Sonata in A Major No. 9, Op. 47 "Kreutzer": I. Adagio sostenuto - Presto
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  subject of: OpenTimestamps Proof of Existence
  audio: Violin Sonata in A Major No. 9, Op. 47 "Kreutzer": I. Adagio sostenuto - Presto
track: Violin Concerto in D Major, Op. 61: II. Larghetto
track: Sonata for Piano and Violin No. 5 in F Major, Op. 24 "Spring": II. Adagio molto espressivo
track: Violin Sonata in A Major No. 9, Op. 47 "Kreutzer": II. Tema - Andante
track: Violin Concerto in D Major, Op. 61: III. Rondo - Allegro
track: Sonata for Piano and Violin No. 1 in D Major, Op. 12 No. 1: Variation I
track: Sonata for Piano and Violin No. 6 in A Major Op. 30 No.1: II. Adagio molto espressivo
track: Sonata for Piano and Violin No. 7 in C Minor Op. 30 No. 2: II. Adagio cantabile

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OTSVerificationAPI
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OTSVerifyInstructions
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value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp

OpenTimestamps Proof of Existence
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date published: 2026-06-13T12:53:06Z

Violin Sonata in A Major No. 9, Op. 47 "Kreutzer": I. Adagio sostenuto - Presto
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Violin Concerto in D Major, Op. 61: II. Larghetto
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Violin Concerto in D Major, Op. 61: II. Larghetto
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Sonata for Piano and Violin No. 5 in F Major, Op. 24 "Spring": II. Adagio molto espressivo
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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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Violin Sonata in A Major No. 9, Op. 47 "Kreutzer": II. Tema - Andante
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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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Violin Concerto in D Major, Op. 61: III. Rondo - Allegro
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
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Sonata for Piano and Violin No. 1 in D Major, Op. 12 No. 1: Variation I
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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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Sonata for Piano and Violin No. 6 in A Major Op. 30 No.1: II. Adagio molto espressivo
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Sonata for Piano and Violin No. 6 in A Major Op. 30 No.1: II. Adagio molto espressivo
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Sonata for Piano and Violin No. 7 in C Minor Op. 30 No. 2: II. Adagio cantabile
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Sonata for Piano and Violin No. 7 in C Minor Op. 30 No. 2: II. Adagio cantabile
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Geigenzauber
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track: Kinderszenen, Op. 15: No. 7, Träumerei (Arr. for Violin and Orchestra)
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T03:55:08Z
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track: Vocalise, Op. 34, No. 14
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Melodía for Violin and Orchestra, Op. 1, "1890"
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Liebesleid
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Ave Maria, D. 839
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Preludés, Livre I, No. 8: La fille aux cheveux de lin
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The Four Seasons - Violin Concerto in E Major, Op. 8 No. 1, RV 269 "Spring": I. Allegro
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Nocturne in D Major, Op. 27, No. 2
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track: Concerto for 2 Violins, Strings and Continuo in D Minor BWV 1043: I. Vivace - Redbook Stereo

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Violin Sonata in A Major No. 9, Op. 47 "Kreutzer": II. Variation II
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Concerto for 2 Violins, Strings and Continuo in D Minor BWV 1043: I. Vivace - Redbook Stereo
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The Final Recordings & Popular Encores (Heifetz Remastered)
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  audio: 6 Romances, Op. 38: No. 3, Daisies (Transcribed for Violin & Piano) - Remastered

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

6 Romances, Op. 38: No. 3, Daisies (Transcribed for Violin & Piano) - Remastered
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    date published: 2026-07-08T03:53:27Z
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    date published: 2026-06-13T17:25:41Z
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track: Zigeunerweisen, Op. 20: I. Moderato
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  audio: Zigeunerweisen, Op. 20: I. Moderato
track: Zigeunerweisen, Op. 20: III. Un poco piú lento
track: Zigeunerweisen, Op. 20: IV. Allegro molto vivace
track: It Ain't Necessarily So

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

Zigeunerweisen, Op. 20: I. Moderato
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Zigeunerweisen, Op. 20: III. Un poco piú lento
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: Zigeunerweisen, Op. 20: III. Un poco piú lento
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Zigeunerweisen, Op. 20: IV. Allegro molto vivace
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T05:09:12Z
audio: Zigeunerweisen, Op. 20: IV. Allegro molto vivace
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It Ain't Necessarily So
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audio: It Ain't Necessarily So
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Gershwin: Selections, Music of France
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date published: 1965
track: 3 Preludes: I. Allegro ben ritmato e deciso
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  by artist: Jascha Heifetz
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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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f82e1d27f34be05be726b1b5090c333a16ee10d65389aa6d186bb9e3190c7b. 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/USBC16500387.
    date published: 2026-07-08T03:53:27Z
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    additional property: Valence (Positivity)
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track: Porgy and Bess: It Ain't Necessarily So
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  by artist: Jascha Heifetz
  by artist: Brooks Smith
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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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    date published: 2026-07-02T05:09:12Z
  audio: Porgy and Bess: It Ain't Necessarily So
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    additional property: Instrumentalness
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    additional property: Valence (Positivity)
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track: Le Carnaval des Animaux: VIII. Le cygne
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  by artist: Camille Saint-Saëns
  by artist: Jascha Heifetz
  by artist: Brooks Smith
  in album: Gershwin: Selections, Music of France
    type: MusicAlbum
    date published: 1965
  genre: classical
  genre: late-romantic-era
  genre: french-romanticism
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  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Le Carnaval des Animaux: VIII. Le cygne

OTSBitcoinBlock
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OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/957124

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBC16500365

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 0x0a8498713277bdd217a56cb05b540bedaf78d95452fb4eb038c8127846ba350a. 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/USBC16500365.
date published: 2026-07-08T03:53:27Z

Le Carnaval des Animaux: VIII. Le cygne
type: AudioObject
additional property: Tempo (BPM)
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additional property: Musical Key
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additional property: Mode (Major/Minor)
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additional property: Time Signature
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additional property: Danceability
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additional property: Energy
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additional property: Speechiness
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additional property: Valence (Positivity)
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Liebesfreud Liebesleid - Homage to Fritz Kreisler
type: MusicAlbum
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  by artist: Ruggiero Ricci
  by artist: Brooks Smith
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  genre: classical
  genre: post-romantic-era
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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 0x495c4276f55a1167598c725a0ad7acc577c5963fed5c6b3ac1bd97c1576089a6. 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/DEF056120270.
    date published: 2026-07-08T08:56:20Z
  audio: Liebesleid
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
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    additional property: Danceability
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    additional property: Energy
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    additional property: Speechiness
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track: Spanish Serenade, Op.70 - Arr. Fritz Kreisler: Allegretto
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  by artist: Shlomo Mintz
  by artist: Clifford Benson
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    type: MusicAlbum
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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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
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    date published: 2026-07-06T06:56:49Z
  audio: Spanish Serenade, Op.70 - Arr. Fritz Kreisler: Allegretto
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Danceability
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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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track: Lieder ohne Worte, Op. 62: VI. Frühlingslied (Arr. by Fritz Kreisler for Violin and Piano)
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  by artist: Felix Mendelssohn
  by artist: Anne-Sophie Mutter
  by artist: André Previn
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  genre: classical
  genre: early-romantic-era
  genre: german-romanticism
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  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
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  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Lieder ohne Worte, Op. 62: VI. Frühlingslied (Arr. by Fritz Kreisler for Violin and Piano)

CopyrightChainExplorerURL
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OTSHash
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OTSBitcoinBlock
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value: 956312

OTSBitcoinBlockVerifyURL
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value: https://blockstream.info/api/block-height/956312

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN960802010

OTSTimestamp
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OTSVerifyInstructions
type: PropertyValue
value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6092ca88ffe82ae6ed7612514c0c8619cc44815d12fb1125f5c50788632322. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEN960802010.
date published: 2026-07-02T05:09:12Z

Lieder ohne Worte, Op. 62: VI. Frühlingslied (Arr. by Fritz Kreisler for Violin and Piano)
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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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Sarasate: Zigeunerweisen, Op. 20, Saint-Saëns: Havanaise, Op. 83
type: MusicAlbum
date published: 1972
track: Preludés, Livre I, No. 8: La fille aux cheveux de lin
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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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Heifetz Encores
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Saint-Saëns: Sonata No. 1, Op. 75, in D Minor, Sibelius, Wieniawski, Rachmaninoff, de Falla
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Heifetz Violin Greatest Hits
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Artists Of The Century: Jascha Heifetz
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Heifetz: Encores, Vol. 1 (1946-1956)
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10 Great Composers: Duets
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Nutcracker Suite, Op. 71a, TH 35: Danse Chinoise, Allegro moderato (Arr. Economou for 2 Pianos)
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Petite pièce, CD 127 (Version for Oboe d'amore & Piano)
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16 Waltzes, Op. 39 - For Piano Duet: 4. in E minor
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  date published: 2026-07-08T03:53:27Z
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Valse sentimentale, Op. 51, No. 6: Valse sentimentale, Op. 51, No. 6
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Rapsodie espagnole, M.54: 2. Malagueña: Assez vif
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Violin Sonata No. 10 in G Major, Op. 96: III. Scherzo (Allegro)
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  date published: 2026-07-08T03:53:27Z
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