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description: Mstislav Leopoldovich Rostropovich (27 March 192727 April 2007) was a Russian cellist and conductor. In addition to his interpretations and technique, he was well known for both inspiring and commissi
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  track: String Quintet in C Major, D. 956: I. Allegro ma non troppo
  track: String Quartet No. 13 In A Minor, D. 804 "Rosamunde": 2. Andante
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  track: String Quintet in C Major, D. 956: III. Scherzo (Presto) - Trio (Andante sostenuto)
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  track: String Quintet in C Major, D. 956: IV. Allegretto
  track: String Quartet No. 14 In D Minor, D. 810 "Death and the Maiden": 1. Allegro
  track: String Quartet No. 12 In C Minor, D. 703 "Quartettsatz": Allegro assai
  track: String Quartet No. 14 In D Minor, D. 810 "Death and the Maiden": 2. Andante con moto
  track: String Quartet No. 14 In D Minor, D. 810 "Death and the Maiden": 3. Scherzo (Allegro molto)
album: Tchaikovsky: The String Quartets & Souvenir de Florence
album: Ballet Highlights - The Nutcracker, Romeo & Juliet, Swan Lake
album: Concert of the Century - Celebrating the 85th Anniversary of Carnegie Hall
track: Cello Concerto in B Minor, Op. 104, B. 191: I. Allegro
track: Piazzolla: Le Grand Tango
track: Swan Lake Suite, Op. 20a: I. Scene "Swan Theme". Moderato
track: Cello Concerto in B Minor, Op. 104, B. 191: II. Adagio ma non troppo
track: Cello Concerto in B Minor, Op. 104, B. 191: III. Finale. Allegro moderato
track: Prokofiev: Violin Concerto No. 1 in D Major, Op. 19: I. Andantino
track: Prokofiev: Violin Concerto No. 1 in D Major, Op. 19: II. Scherzo. Vivacissimo
track: Prokofiev: Violin Concerto No. 1 in D Major, Op. 19: III. Moderato
track: Shostakovich: Violin Concerto No. 1 in A Minor, Op. 77: IV. Burlesque. Allegro con brio - Presto
track: Stravinsky: Violin Concerto in D Major: I. Toccata

String Quintet in C Major, D. 956: I. Allegro ma non troppo
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String Quintet in C Major, D. 956: II. Adagio
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String Quintet in C Major, D. 956: III. Scherzo (Presto) - Trio (Andante sostenuto)
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String Quintet in C Major, D. 956: IV. Allegretto
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by artist: Mstislav Rostropovich
by artist: Emerson String Quartet
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genre: classical-piano
genre: chamber-music
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additional property: OTSVerifyInstructions
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  date published: 2026-07-08T03:20:19Z
audio: String Quintet in C Major, D. 956: IV. Allegretto
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The Nutcracker (Suite), Op. 71a, TH. 35: IIa. March
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by artist: Berliner Philharmoniker
by artist: Mstislav Rostropovich
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additional property: OTSVerifyInstructions
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  date published: 2026-07-02T03:55:08Z
audio: The Nutcracker (Suite), Op. 71a, TH. 35: IIa. March
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The Nutcracker (Suite), Op. 71a, TH. 35: IIb. Dance of the Sugar-Plum Fairy
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by artist: Berliner Philharmoniker
by artist: Mstislav Rostropovich
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additional property: OTSVerifyInstructions
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  date published: 2026-07-02T03:30:09Z
audio: The Nutcracker (Suite), Op. 71a, TH. 35: IIb. Dance of the Sugar-Plum Fairy
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The Nutcracker (Suite), Op. 71a, TH. 35: IIc. Russian Dance (Trepak)
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duration: PT1M9S
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by artist: Pyotr Ilyich Tchaikovsky
by artist: Berliner Philharmoniker
by artist: Mstislav Rostropovich
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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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  date published: 2026-07-02T03:55:08Z
audio: The Nutcracker (Suite), Op. 71a, TH. 35: IIc. Russian Dance (Trepak)
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The Nutcracker (Suite), Op. 71a, TH. 35: IIe. Chinese Dance (Tea)
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duration: PT1M13S
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by artist: Pyotr Ilyich Tchaikovsky
by artist: Berliner Philharmoniker
by artist: Mstislav Rostropovich
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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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  date published: 2026-07-02T05:09:12Z
audio: The Nutcracker (Suite), Op. 71a, TH. 35: IIe. Chinese Dance (Tea)
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The Nutcracker (Suite), Op. 71a, TH. 35: IIf. Dance of the Reed-Pipes (Mirlitons)
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by artist: Pyotr Ilyich Tchaikovsky
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by artist: Mstislav Rostropovich
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  date published: 2026-07-02T03:55:08Z
audio: The Nutcracker (Suite), Op. 71a, TH. 35: IIf. Dance of the Reed-Pipes (Mirlitons)
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Cello Sonata in G Minor, Op. 19: III. Andante
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popularity: 5
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Cello Concerto in B Minor, Op. 104, B. 191: I. Allegro
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Piazzolla: Le Grand Tango
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Cello Concerto in B Minor, Op. 104, B. 191: II. Adagio ma non troppo
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Cello Concerto in B Minor, Op. 104, B. 191: III. Finale. Allegro moderato
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Prokofiev: Violin Concerto No. 1 in D Major, Op. 19: I. Andantino
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Prokofiev: Violin Concerto No. 1 in D Major, Op. 19: II. Scherzo. Vivacissimo
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additional property: OTSVerifyInstructions
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Prokofiev: Violin Concerto No. 1 in D Major, Op. 19: III. Moderato
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duration ms: 540173
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by artist: Sergei Prokofiev
by artist: Maxim Vengerov
by artist: Mstislav Rostropovich
by artist: London Symphony Orchestra
in album: Violin Concertos: Tchaikovsky, Bruch, Mozart, Prokofiev, Stravinsky, Lalo
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popularity: 3
genre: classical
genre: orchestra
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T23:23:05Z
audio: Prokofiev: Violin Concerto No. 1 in D Major, Op. 19: III. Moderato
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Shostakovich: Violin Concerto No. 1 in A Minor, Op. 77: IV. Burlesque. Allegro con brio - Presto
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duration: PT4M42S
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by artist: Maxim Vengerov
by artist: Mstislav Rostropovich
by artist: London Symphony Orchestra
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T21:35:24Z
audio: Shostakovich: Violin Concerto No. 1 in A Minor, Op. 77: IV. Burlesque. Allegro con brio - Presto
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Stravinsky: Violin Concerto in D Major: I. Toccata
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duration: PT6M21S
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explicit: false
by artist: Igor Stravinsky
by artist: Maxim Vengerov
by artist: Mstislav Rostropovich
by artist: London Symphony Orchestra
in album: Violin Concertos: Tchaikovsky, Bruch, Mozart, Prokofiev, Stravinsky, Lalo
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popularity: 3
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T05:15:54Z
audio: Stravinsky: Violin Concerto in D Major: I. Toccata
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Instrumentalness
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String Quartet No. 13 In A Minor, D. 804 "Rosamunde": 2. Andante
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by artist: Emerson String Quartet
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genre: classical
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genre: chamber-music
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: String Quartet No. 13 In A Minor, D. 804 "Rosamunde": 2. Andante
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String Quartet No. 15 In G, D. 887: 2. Andante un poco mosso
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by artist: Emerson String Quartet
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genre: classical
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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: String Quartet No. 15 In G, D. 887: 2. Andante un poco mosso
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String Quartet No. 15 In G, D. 887: 4. Allegro assai
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: String Quartet No. 15 In G, D. 887: 4. Allegro assai
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String Quartet No. 14 In D Minor, D. 810 "Death and the Maiden": 1. Allegro
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by artist: Emerson String Quartet
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genre: classical
genre: classical-piano
genre: chamber-music
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String Quartet No. 12 In C Minor, D. 703 "Quartettsatz": Allegro assai
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date published: 2026-06-13T17:25:41Z

Sylvia, Suite: 3. Pizzicati
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Romeo And Juliet, Ballet Suite No. 1 - Op. 64a:5: Masks
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subject of: OpenTimestamps Proof of Existence
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Romeo and Juliet, Op. 64: Montagues and Capulets (excerpt)
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The Sleeping Beauty, Suite, Op. 66a, TH 234: 2. Pas d'action: Rose Adagio
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The Sleeping Beauty, Suite, Op. 66a, TH 234: 5. Valse
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Gaîté parisienne: Barcarolle
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popularity: 43
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Cinderella, Op. 87: 12. Spring Fairy
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Cinderella, Op. 87: 16. Winter Fairy
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39fd931824b2a504bfcc663e62df3bb4de526f6cbacf241e1c9becf8f27c0e9. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059430416.
  date published: 2026-07-02T11:38:34Z
audio: Cinderella, Op. 87: 16. Winter Fairy
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  additional property: Valence (Positivity)
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La Gioconda / Act 3: Dance Of The Hours
type: MusicRecording
duration: PT2M42S
duration ms: 162613
explicit: false
by artist: Amilcare Ponchielli
by artist: Gothenburg Symphony Orchestra
by artist: Neeme Järvi
in album: Ballet Highlights - The Nutcracker, Romeo & Juliet, Swan Lake
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  date published: 2012-01-01
isrc code: DEF058802501
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91dd1793d23b1e468a0113154b8ecbf33387b18b2bfcaaa86ae4cf66047c98a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEF058802501.
  date published: 2026-06-13T12:47:07Z
audio: La Gioconda / Act 3: Dance Of The Hours
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Les Sylphides (Orch. Douglas): II. Nocturne No. 10 in A-Flat Major, Op. 32 No. 2
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duration: PT5M54S
duration ms: 354306
explicit: false
by artist: Frédéric Chopin
by artist: Berliner Philharmoniker
by artist: Herbert von Karajan
in album: Ballet Highlights - The Nutcracker, Romeo & Juliet, Swan Lake
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  date published: 2012-01-01
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: DEF056102252
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe585f3cdd82f05056c92fa6237676eaf84d962545b0025499c786247438e4539. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056102252.
  date published: 2026-07-02T11:38:34Z
audio: Les Sylphides (Orch. Douglas): II. Nocturne No. 10 in A-Flat Major, Op. 32 No. 2
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Les Sylphides (Orch. Douglas): VII. Waltz No. 7 in C-Sharp Minor, Op. 64 No. 2
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duration: PT4M28S
duration ms: 268613
explicit: false
by artist: Frédéric Chopin
by artist: Berliner Philharmoniker
by artist: Herbert von Karajan
in album: Ballet Highlights - The Nutcracker, Romeo & Juliet, Swan Lake
  type: MusicAlbum
  date published: 2012-01-01
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: DEF056102254
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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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 0xd5463b1efe7d85a7d1fbad29a40bafac69a75eea06104000817af4a2b25de15e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEF056102254.
  date published: 2026-06-13T17:25:41Z
audio: Les Sylphides (Orch. Douglas): VII. Waltz No. 7 in C-Sharp Minor, Op. 64 No. 2
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Faust, CG 4, Ballet Music: VI. Variations du miroir. Allegretto
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duration: PT2M5S
duration ms: 125613
explicit: false
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by artist: Berliner Philharmoniker
by artist: Herbert von Karajan
in album: Ballet Highlights - The Nutcracker, Romeo & Juliet, Swan Lake
  type: MusicAlbum
  date published: 2012-01-01
genre: opera
isrc code: DEF057101246
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: 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 0xeb43c5f9ca4d5a76d2a49e8dcbaf94281df31c4baa80e4909f3d148ca3a0dc25. 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/DEF057101246.
  date published: 2026-07-02T03:30:09Z
audio: Faust, CG 4, Ballet Music: VI. Variations du miroir. Allegretto
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  additional property: Tempo (BPM)
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Swan Lake Suite, Op. 20a: I. Scene "Swan Theme". Moderato
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duration: PT2M47S
duration ms: 167266
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Berliner Philharmoniker
by artist: Herbert von Karajan
in album: Ballet Highlights - The Nutcracker, Romeo & Juliet, Swan Lake
  type: MusicAlbum
  date published: 2012-01-01
isrc code: DEF057101680
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: 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 0x88796cdfd0ad29b128c7f212768193d285a4b1860cf40ceb83a7746d855489eb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEF057101680.
  date published: 2026-06-13T12:47:07Z
audio: Swan Lake Suite, Op. 20a: I. Scene "Swan Theme". Moderato
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Swan Lake Suite, Op. 20a: III. Danse des cygnes. Allegro moderato
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duration: PT1M45S
duration ms: 105653
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Berliner Philharmoniker
by artist: Herbert von Karajan
in album: Ballet Highlights - The Nutcracker, Romeo & Juliet, Swan Lake
  type: MusicAlbum
  date published: 2012-01-01
isrc code: DEF057101682
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:30:09Z
audio: Swan Lake Suite, Op. 20a: III. Danse des cygnes. Allegro moderato
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Swan Lake Suite, Op. 20a: VI. Finale Scene. Allegro agitato – Andante
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by artist: Berliner Philharmoniker
by artist: Herbert von Karajan
in album: Ballet Highlights - The Nutcracker, Romeo & Juliet, Swan Lake
  type: MusicAlbum
  date published: 2012-01-01
isrc code: DEF057101685
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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Concert of the Century - Celebrating the 85th Anniversary of Carnegie Hall
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Swan Lake Suite, Op. 20a: I. Scene "Swan Theme". Moderato
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by artist: Berliner Philharmoniker
by artist: Mstislav Rostropovich
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