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album: Piano Recital: Chopin, Schubert & Ravel
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album: Chopin, Bach, Beethoven, Schubert, Rachmaninov
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  track: Bach, JS: Goldberg Variations, BWV 988: Variation VII. Al tempo di giga
  track: Bach, JS: Goldberg Variations, BWV 988: Variation VIII
  track: Bach, JS: Goldberg Variations, BWV 988: Variation IX. Canone alla terza
  track: Bach, JS: Goldberg Variations, BWV 988: Variation X. Fughetta
  track: Bach, JS: Goldberg Variations, BWV 988: Variation XI
  track: Bach, JS: Goldberg Variations, BWV 988: Variation XII. Canone alla quarta
  track: Chopin: Variations brillantes on Hérold's "Je vends des scapulaires", Op. 12: I. Introduction. Allegro maestoso
  track: Chopin: Variations brillantes on Hérold's "Je vends des scapulaires", Op. 12: II. Theme. Allegro moderato
  track: Chopin: Variations brillantes on Hérold's "Je vends des scapulaires", Op. 12: III. Scherzo
  track: Chopin: Variations brillantes on Hérold's "Je vends des scapulaires", Op. 12: IV. Lento
  track: Chopin: Variations brillantes on Hérold's "Je vends des scapulaires", Op. 12: V. Scherzo vivace
  track: Chopin: Mazurka No. 38 in F-Sharp Minor, Op. 59 No. 3
  track: Chopin: Piano Sonata No. 3 in B Minor, Op. 58: II. Scherzo
  track: Chopin: Piano Sonata No. 3 in B Minor, Op. 58: IV. Finale. Presto non tanto
  track: Chopin: Mazurka No. 36 in A Minor, Op. 59 No. 1
  track: Chopin: Andante spianato et Grande polonaise brillante, Op. 22: Andante spianato
  track: Chopin: 24 Preludes, Op. 28: No. 9 in E Major
  track: Chopin: 24 Preludes, Op. 28: No. 11 in B Major
  track: Chopin: 24 Preludes, Op. 28: No. 12 in G-Sharp Minor
  track: Chopin: 24 Preludes, Op. 28: No. 16 in B-Flat Minor
  track: Schubert: 4 Impromptus, Op. 90, D. 899: No. 1 in C Minor
  track: Schubert: 4 Impromptus, Op. 90, D. 899: No. 4 in A-Flat Major
  track: Chopin: Fantaisie-impromptu in C-Sharp Minor, Op. Posth. 66
  track: Bach, JS: Goldberg Variations, BWV 988: Variation XIV
  track: Bach, JS: Goldberg Variations, BWV 988: Variation XVI. Overture
  track: Bach, JS: Goldberg Variations, BWV 988: Variation XIX
  track: Mozart: Violin Sonata No. 18 in G Major, K. 301: II. Allegro
  track: Mozart: Violin Sonata No. 21 in E Minor, K. 304: II. Tempo di menuetto
  track: Mozart: Violin Sonata No. 26 in B-Flat Major, K. 378: I. Allegro moderato
  track: Mozart: Violin Sonata No. 26 in B-Flat Major, K. 378: II. Andantino sostenuto e cantabile
  track: Mozart: Violin Sonata No. 26 in B-Flat Major, K. 378: III. Rondeau. Allegro
  track: Rachmaninov: Piano Concerto No. 2 in C Minor, Op. 18: II. Adagio sostenuto
  track: Bach, JS: Goldberg Variations, BWV 988: Variation XXII. Alla breve
album: Bach: Goldberg Variations, BWV 988 - Chopin: Preludes, Op. 28 - Mozart, Beethoven
track: Berceuse in D-Flat Major, Op. 57
track: Bach: Arioso (Arr. Cortot After Harpsichord Concerto No. 5 in F Minor, BWV 1056)
track: Harpsichord Concerto No. 5 in F Minor, BWV 1056: I. Arioso (Arr. Cortot)
track: Preludes, Op. 28: No. 21 in B-Flat Major (Cantabile)
track: Chopin: Berceuse in D-Flat Major, Op. 57
track: Grande Polonaise Op. 22: Andante spianato

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Chopin: 24 Preludes, Op. 28: No. 4 in E Minor
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  date published: 2026-07-02T03:55:08Z
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Schubert: 4 Impromptus, Op. 90, D. 899: No. 2 in E-Flat Major
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  date published: 2026-07-02T03:55:08Z
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Preludes, Op. 28: No. 21 in B-Flat Major (Cantabile)
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audio: Preludes, Op. 28: No. 21 in B-Flat Major (Cantabile)
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Grande Polonaise Op. 22: Andante spianato
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Bach, JS: Goldberg Variations, BWV 988: Variation VII. Al tempo di giga
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Bach, JS: Goldberg Variations, BWV 988: Variation VIII
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Bach, JS: Goldberg Variations, BWV 988: Variation IX. Canone alla terza
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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: Bach, JS: Goldberg Variations, BWV 988: Variation IX. Canone alla terza
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Bach, JS: Goldberg Variations, BWV 988: Variation X. Fughetta
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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
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Bach, JS: Goldberg Variations, BWV 988: Variation XI
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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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Bach, JS: Goldberg Variations, BWV 988: Variation XII. Canone alla quarta
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T05:09:12Z
audio: Bach, JS: Goldberg Variations, BWV 988: Variation XII. Canone alla quarta
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Chopin: Variations brillantes on Hérold's "Je vends des scapulaires", Op. 12: I. Introduction. Allegro maestoso
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T05:09:12Z
audio: Chopin: Variations brillantes on Hérold's "Je vends des scapulaires", Op. 12: I. Introduction. Allegro maestoso
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Chopin: Variations brillantes on Hérold's "Je vends des scapulaires", Op. 12: II. Theme. Allegro moderato
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:34:59Z
audio: Chopin: Variations brillantes on Hérold's "Je vends des scapulaires", Op. 12: II. Theme. Allegro moderato
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Chopin: Variations brillantes on Hérold's "Je vends des scapulaires", Op. 12: III. Scherzo
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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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Chopin: Variations brillantes on Hérold's "Je vends des scapulaires", Op. 12: IV. Lento
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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: Chopin: Variations brillantes on Hérold's "Je vends des scapulaires", Op. 12: IV. Lento
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Chopin: Variations brillantes on Hérold's "Je vends des scapulaires", Op. 12: V. Scherzo vivace
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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: 2026-07-02T03:55:08Z
audio: Chopin: Variations brillantes on Hérold's "Je vends des scapulaires", Op. 12: V. Scherzo vivace
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Chopin: Mazurka No. 38 in F-Sharp Minor, Op. 59 No. 3
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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: 2026-07-06T07:53:57Z
audio: Chopin: Mazurka No. 38 in F-Sharp Minor, Op. 59 No. 3
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Chopin: Piano Sonata No. 3 in B Minor, Op. 58: II. Scherzo
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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: 2026-07-02T03:55:08Z
audio: Chopin: Piano Sonata No. 3 in B Minor, Op. 58: II. Scherzo
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Chopin: Piano Sonata No. 3 in B Minor, Op. 58: IV. Finale. Presto non tanto
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genre: classical
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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: 2026-07-02T03:55:08Z
audio: Chopin: Piano Sonata No. 3 in B Minor, Op. 58: IV. Finale. Presto non tanto
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Chopin: Mazurka No. 36 in A Minor, Op. 59 No. 1
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genre: classical
genre: classical piano
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additional property: CopyrightID
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T07:16:32Z
audio: Chopin: Mazurka No. 36 in A Minor, Op. 59 No. 1
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Chopin: Andante spianato et Grande polonaise brillante, Op. 22: Andante spianato
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genre: classical
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additional property: CopyrightRegisteredAt
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Chopin: Andante spianato et Grande polonaise brillante, Op. 22: Andante spianato
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Chopin: 24 Preludes, Op. 28: No. 9 in E Major
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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: 2026-07-21T16:35:09Z
audio: Chopin: 24 Preludes, Op. 28: No. 9 in E Major
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Chopin: 24 Preludes, Op. 28: No. 11 in B Major
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in album: 'Arioso' - Bach, Mozart, Chopin, Ravel, Rachmaninov
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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: 2026-07-02T05:09:12Z
audio: Chopin: 24 Preludes, Op. 28: No. 11 in B Major
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Chopin: 24 Preludes, Op. 28: No. 12 in G-Sharp Minor
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by artist: Dong Hyek Lim
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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: 2026-07-02T11:38:34Z
audio: Chopin: 24 Preludes, Op. 28: No. 12 in G-Sharp Minor
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Chopin: 24 Preludes, Op. 28: No. 16 in B-Flat Minor
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genre: classical
genre: classical piano
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Chopin: 24 Preludes, Op. 28: No. 16 in B-Flat Minor
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Schubert: 4 Impromptus, Op. 90, D. 899: No. 1 in C Minor
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genre: classical
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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: 2026-07-02T11:34:59Z
audio: Schubert: 4 Impromptus, Op. 90, D. 899: No. 1 in C Minor
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Schubert: 4 Impromptus, Op. 90, D. 899: No. 4 in A-Flat Major
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genre: classical
genre: classical piano
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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: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T13:25:45Z
audio: Schubert: 4 Impromptus, Op. 90, D. 899: No. 4 in A-Flat Major
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Chopin: Fantaisie-impromptu in C-Sharp Minor, Op. Posth. 66
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genre: classical
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additional property: CopyrightID
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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: 2026-07-02T03:55:08Z
audio: Chopin: Fantaisie-impromptu in C-Sharp Minor, Op. Posth. 66
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Bach, JS: Goldberg Variations, BWV 988: Variation XIV
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:34:59Z
audio: Bach, JS: Goldberg Variations, BWV 988: Variation XIV
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Bach, JS: Goldberg Variations, BWV 988: Variation XVI. Overture
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T06:56:49Z
audio: Bach, JS: Goldberg Variations, BWV 988: Variation XVI. Overture
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Bach, JS: Goldberg Variations, BWV 988: Variation XIX
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T07:16:32Z
audio: Bach, JS: Goldberg Variations, BWV 988: Variation XIX
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Mozart: Violin Sonata No. 18 in G Major, K. 301: II. Allegro
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-21T22:42:42Z
audio: Mozart: Violin Sonata No. 18 in G Major, K. 301: II. Allegro
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Mozart: Violin Sonata No. 21 in E Minor, K. 304: II. Tempo di menuetto
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Mozart: Violin Sonata No. 21 in E Minor, K. 304: II. Tempo di menuetto
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Mozart: Violin Sonata No. 26 in B-Flat Major, K. 378: I. Allegro moderato
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Mozart: Violin Sonata No. 26 in B-Flat Major, K. 378: I. Allegro moderato
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Mozart: Violin Sonata No. 26 in B-Flat Major, K. 378: II. Andantino sostenuto e cantabile
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Mozart: Violin Sonata No. 26 in B-Flat Major, K. 378: II. Andantino sostenuto e cantabile
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track: Bach, JS: Goldberg Variations, BWV 988: Variation XXVII. Canone alla nona
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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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Bach, JS: Goldberg Variations, BWV 988: Variation I
type: MusicRecording
duration: PT1M17S
duration ms: 77733
explicit: false
by artist: Dong Hyek Lim
in album: Bach: Goldberg Variations, BWV 988 - Chopin: Preludes, Op. 28 - Mozart, Beethoven
  type: MusicAlbum
  date published: 2025-04-19
genre: classical
genre: classical piano
isrc code: GBAYC0800834
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0800834
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
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 0x2c4f50bd791c449b6d41e77756d73431df9331860d9e3d10bfd73e4af4417b40. 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/GBAYC0800834.
  date published: 2026-07-02T03:30:09Z
audio: Bach, JS: Goldberg Variations, BWV 988: Variation I
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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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Bach, JS: Goldberg Variations, BWV 988: Variation II
type: MusicRecording
duration: PT0M44S
duration ms: 44773
explicit: false
by artist: Dong Hyek Lim
in album: Bach: Goldberg Variations, BWV 988 - Chopin: Preludes, Op. 28 - Mozart, Beethoven
  type: MusicAlbum
  date published: 2025-04-19
genre: classical
genre: classical piano
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additional property: CopyrightID
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0800835
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
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 0xb3b2313848a917198de70551623d42e29e18a8830dbf9df77c92beacb2793c11. 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/GBAYC0800835.
  date published: 2026-07-02T03:30:09Z
audio: Bach, JS: Goldberg Variations, BWV 988: Variation II
  type: AudioObject
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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Valence (Positivity)
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Bach, JS: Goldberg Variations, BWV 988: Variation III. Canone all'unisono
type: MusicRecording
duration: PT1M23S
duration ms: 83946
explicit: false
by artist: Dong Hyek Lim
in album: Bach: Goldberg Variations, BWV 988 - Chopin: Preludes, Op. 28 - Mozart, Beethoven
  type: MusicAlbum
  date published: 2025-04-19
genre: classical
genre: classical piano
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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
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0800836
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
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 0x3eea0a264c4ae04e44080744cfde9a8cbfd644c3aae63472db764c02ffa65a0b. 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/GBAYC0800836.
  date published: 2026-07-02T03:30:09Z
audio: Bach, JS: Goldberg Variations, BWV 988: Variation III. Canone all'unisono
  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
    type: PropertyValue
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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Valence (Positivity)
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Bach, JS: Goldberg Variations, BWV 988: Variation IV
type: MusicRecording
duration: PT0M48S
duration ms: 48693
explicit: false
by artist: Dong Hyek Lim
in album: Bach: Goldberg Variations, BWV 988 - Chopin: Preludes, Op. 28 - Mozart, Beethoven
  type: MusicAlbum
  date published: 2025-04-19
genre: classical
genre: classical piano
isrc code: GBAYC0800837
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
  type: PropertyValue
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0800837
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
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 0xcd87e88fb202e643d33fa7b9749c471d3bc4c10b4872261fd7a35f496d04066e. 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/GBAYC0800837.
  date published: 2026-07-02T03:30:09Z
audio: Bach, JS: Goldberg Variations, BWV 988: Variation IV
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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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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Bach, JS: Goldberg Variations, BWV 988: Variation V
type: MusicRecording
duration: PT0M38S
duration ms: 38200
explicit: false
by artist: Dong Hyek Lim
in album: Bach: Goldberg Variations, BWV 988 - Chopin: Preludes, Op. 28 - Mozart, Beethoven
  type: MusicAlbum
  date published: 2025-04-19
genre: classical
genre: classical piano
isrc code: GBAYC0800838
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-19T23:24:10+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6c8c12343c8e1f0f5168d914ae5b4e8cca7ac446152ea9a6d685ab39979e4353
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0800838
additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8c12343c8e1f0f5168d914ae5b4e8cca7ac446152ea9a6d685ab39979e4353. 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/GBAYC0800838.
  date published: 2026-07-02T03:30:09Z
audio: Bach, JS: Goldberg Variations, BWV 988: Variation V
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
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  additional property: Mode Name
    type: PropertyValue
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Bach, JS: Goldberg Variations, BWV 988: Variation VI. Canone alla seconda
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duration: PT0M35S
duration ms: 35626
explicit: false
by artist: Dong Hyek Lim
in album: Bach: Goldberg Variations, BWV 988 - Chopin: Preludes, Op. 28 - Mozart, Beethoven
  type: MusicAlbum
  date published: 2025-04-19
genre: classical
genre: classical piano
isrc code: GBAYC0800839
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-19T23:19:19+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3a2ad73789aad0b5878b9ecc587bd864afb6dd8092e5cf110c86407f73cafc4d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0800839
additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2ad73789aad0b5878b9ecc587bd864afb6dd8092e5cf110c86407f73cafc4d. 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/GBAYC0800839.
  date published: 2026-07-02T03:30:09Z
audio: Bach, JS: Goldberg Variations, BWV 988: Variation VI. Canone alla seconda
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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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: Mode Name
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Bach, JS: Goldberg Variations, BWV 988: Variation VII. Al tempo di giga
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duration: PT1M37S
duration ms: 97146
explicit: false
by artist: Dong Hyek Lim
in album: Bach: Goldberg Variations, BWV 988 - Chopin: Preludes, Op. 28 - Mozart, Beethoven
  type: MusicAlbum
  date published: 2025-04-19
genre: classical
genre: classical piano
isrc code: GBAYC0800840
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-19T23:19:19+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xeea527259cefddc9883fcbbddf5e2c97d1e54dc74ddf7075f312d17050e58a0c
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea527259cefddc9883fcbbddf5e2c97d1e54dc74ddf7075f312d17050e58a0c. 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/GBAYC0800840.
  date published: 2026-07-02T03:30:09Z
audio: Bach, JS: Goldberg Variations, BWV 988: Variation VII. Al tempo di giga
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
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Bach, JS: Goldberg Variations, BWV 988: Variation VIII
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by artist: Dong Hyek Lim
in album: Bach: Goldberg Variations, BWV 988 - Chopin: Preludes, Op. 28 - Mozart, Beethoven
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genre: classical
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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: 2026-07-02T03:30:09Z
audio: Bach, JS: Goldberg Variations, BWV 988: Variation VIII
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Bach, JS: Goldberg Variations, BWV 988: Variation IX. Canone alla terza
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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: 2026-07-02T03:30:09Z
audio: Bach, JS: Goldberg Variations, BWV 988: Variation IX. Canone alla terza
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Bach, JS: Goldberg Variations, BWV 988: Variation X. Fughetta
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genre: classical
genre: classical piano
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:30:09Z
audio: Bach, JS: Goldberg Variations, BWV 988: Variation X. Fughetta
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Schubert: Piano Sonata No. 21 in B-Flat Major, D. 960: II. Andante sostenuto
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duration: PT9M43S
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genre: classical
genre: classical piano
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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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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:30:09Z
audio: Schubert: Piano Sonata No. 21 in B-Flat Major, D. 960: II. Andante sostenuto
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Schubert: Piano Sonata No. 21 in B-Flat Major, D. 960: III. Scherzo
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genre: classical
genre: classical piano
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additional property: CopyrightID
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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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a566b11eaa4bb29b4d07d74fcabea06ce7c939d2c95bf5c8ff45f324d27c84. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBAYC2102596.
  date published: 2026-07-02T03:55:08Z
audio: Schubert: Piano Sonata No. 21 in B-Flat Major, D. 960: III. Scherzo
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Chopin: Nocturne No. 2 in E-Flat Major, Op. 9 No. 2
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genre: classical
genre: classical piano
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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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: 2026-07-02T03:30:09Z
audio: Chopin: Nocturne No. 2 in E-Flat Major, Op. 9 No. 2
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Chopin: 24 Preludes, Op. 28: No. 5 in D Major
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genre: classical
genre: classical piano
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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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  date published: 2026-07-02T03:55:08Z
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Chopin: 24 Preludes, Op. 28: No. 6 in B Minor
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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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Chopin: 24 Preludes, Op. 28: No. 7 in A Major
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Chopin: 24 Preludes, Op. 28: No. 7 in A Major
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Chopin: 24 Preludes, Op. 28: No. 8 in F-Sharp Minor
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Chopin: 24 Preludes, Op. 28: No. 8 in F-Sharp Minor
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Chopin: 24 Preludes, Op. 28: No. 9 in E Major
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Chopin: 24 Preludes, Op. 28: No. 9 in E Major
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Chopin: 24 Preludes, Op. 28: No. 18 in F Minor
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Chopin: 24 Preludes, Op. 28: No. 18 in F Minor
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genre: classical
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Chopin: 24 Preludes, Op. 28: No. 19 in E-Flat Major
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Chopin: 24 Preludes, Op. 28: No. 20 in C Minor
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subject of: OpenTimestamps Proof of Existence
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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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Mozart: Violin Sonata No. 26 in B-Flat Major, K. 378: III. Rondeau. Allegro
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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
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Schubert: Piano Sonata No. 20 in A Major, D. 959: IV. Rondo
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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: 2026-07-02T03:55:08Z
audio: Schubert: Piano Sonata No. 20 in A Major, D. 959: IV. Rondo
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Chopin: 24 Preludes, Op. 28: No. 11 in B Major
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T05:09:12Z
audio: Chopin: 24 Preludes, Op. 28: No. 11 in B Major
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Chopin: 24 Preludes, Op. 28: No. 12 in G-Sharp Minor
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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: Chopin: 24 Preludes, Op. 28: No. 12 in G-Sharp Minor
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Chopin: 24 Preludes, Op. 28: No. 13 in F-Sharp Major
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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: Chopin: 24 Preludes, Op. 28: No. 13 in F-Sharp Major
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Chopin: 24 Preludes, Op. 28: No. 17 in A-Flat Major
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Chopin: 24 Preludes, Op. 28: No. 17 in A-Flat Major
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Chopin: 24 Preludes, Op. 28: No. 22 in G Minor
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genre: classical
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subject of: OpenTimestamps Proof of Existence
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Chopin: 24 Preludes, Op. 28: No. 23 in F Major
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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
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Chopin: 24 Preludes, Op. 28: No. 24 in D Minor
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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: Chopin: 24 Preludes, Op. 28: No. 24 in D Minor
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Chopin: Berceuse in D-Flat Major, Op. 57
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:38:34Z
audio: Chopin: Berceuse in D-Flat Major, Op. 57
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Bach, JS: Goldberg Variations, BWV 988: Variation XXVI
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Bach, JS: Goldberg Variations, BWV 988: Variation XXVI
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Bach, JS: Goldberg Variations, BWV 988: Variation XXVII. Canone alla nona
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T16:51:38Z
audio: Bach, JS: Goldberg Variations, BWV 988: Variation XXVII. Canone alla nona
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Bach, JS: Goldberg Variations, BWV 988: Variation XXVIII
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  date published: 2026-07-02T16:51:38Z
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Berceuse in D-Flat Major, Op. 57
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subject of: OpenTimestamps Proof of Existence
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audio: Berceuse in D-Flat Major, Op. 57
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Bach: Arioso (Arr. Cortot After Harpsichord Concerto No. 5 in F Minor, BWV 1056)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T12:53:06Z
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Harpsichord Concerto No. 5 in F Minor, BWV 1056: I. Arioso (Arr. Cortot)
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T13:32:09Z
audio: Harpsichord Concerto No. 5 in F Minor, BWV 1056: I. Arioso (Arr. Cortot)
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Chopin: Berceuse in D-Flat Major, Op. 57
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T05:09:12Z
audio: Chopin: Berceuse in D-Flat Major, Op. 57
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Harpsichord Concerto No. 5 in F Minor, BWV 1056: I. Arioso (Arr. Cortot)
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  date published: 2026-07-08T08:56:20Z
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