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  track: Violin Concerto in B-Flat Major, Op. 7 No. 2: I. Allegro moderato
  track: Violin Concerto in B-Flat Major, Op. 7 No. 2: II. Andante moderato
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Violin Concerto in G Major, Op. 2 No. 1: II. Largo
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Violin Concerto in G Major, Op. 2 No. 1: III. Rondeau
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Violin Concerto in D Major, Op. 2 No. 2: I. Allegro
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Violin Concerto in D Major, Op. 2 No. 2: III. Rondeau
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Violin Concerto in A Major, Op. 7 No. 1: II. Adagio
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Violin Concerto in B-Flat Major, Op. 7 No. 2: III. Rondeau
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Oboe Concertino in G Major, Bryan G5: II. Minuetto. Moderato
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Variations on a Rococo Theme, Op. 33b, TH 57 b: Var. 6, Adagio
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Fidelio, Op. 72: Overture
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Fidelio, Op. 72, Act I: Duet. Jetzt, Schatzchen, jetzt sind wir allein (Jaquino, Marzelline)
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by artist: Wolfgang Glashof
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by artist: Michael Halasz
by artist: Alan Titus
by artist: Gösta Winbergh
by artist: Inga Nielsen
by artist: Kurt Moll
by artist: Edith Lienbacher
by artist: Herwig Pecoraro
by artist: Péter Pálinkás
by artist: József Moldvay
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additional property: OTSVerifyInstructions
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  date published: 2026-07-02T03:55:08Z
audio: Fidelio, Op. 72, Act I: Duet. Jetzt, Schatzchen, jetzt sind wir allein (Jaquino, Marzelline)
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Fidelio, Op. 72, Act I: Aria. O war' ich schon mit dir vereint (Marzelline)
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by artist: Ludwig van Beethoven
by artist: Wolfgang Glashof
by artist: Hungarian Radio Chorus
by artist: Nicolaus Esterhazy Sinfonia
by artist: Michael Halasz
by artist: Alan Titus
by artist: Gösta Winbergh
by artist: Inga Nielsen
by artist: Kurt Moll
by artist: Edith Lienbacher
by artist: Herwig Pecoraro
by artist: Péter Pálinkás
by artist: József Moldvay
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additional property: OTSVerifyInstructions
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  date published: 2026-07-02T03:30:09Z
audio: Fidelio, Op. 72, Act I: Aria. O war' ich schon mit dir vereint (Marzelline)
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Fidelio, Op. 72, Act I: Quartet: Mir ist so wunderbar (Marzelline, Leonore, Rocco, Jaquino)
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by artist: Wolfgang Glashof
by artist: Hungarian Radio Chorus
by artist: Nicolaus Esterhazy Sinfonia
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by artist: Alan Titus
by artist: Gösta Winbergh
by artist: Inga Nielsen
by artist: Kurt Moll
by artist: Edith Lienbacher
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by artist: József Moldvay
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additional property: OTSVerifyInstructions
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  date published: 2026-07-02T03:30:09Z
audio: Fidelio, Op. 72, Act I: Quartet: Mir ist so wunderbar (Marzelline, Leonore, Rocco, Jaquino)
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Fidelio, Op. 72, Act I: Aria. Hat man nicht auch Gold beineben (Rocco)
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by artist: Wolfgang Glashof
by artist: Hungarian Radio Chorus
by artist: Nicolaus Esterhazy Sinfonia
by artist: Michael Halasz
by artist: Alan Titus
by artist: Gösta Winbergh
by artist: Inga Nielsen
by artist: Kurt Moll
by artist: Edith Lienbacher
by artist: Herwig Pecoraro
by artist: Péter Pálinkás
by artist: József Moldvay
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genre: classical
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  date published: 2026-07-02T11:38:34Z
audio: Fidelio, Op. 72, Act I: Aria. Hat man nicht auch Gold beineben (Rocco)
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Fidelio, Op. 72, Act II: Finale. Heil! Heil sei dem Tag! (People and Prisoners)
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by artist: Wolfgang Glashof
by artist: Hungarian Radio Chorus
by artist: Nicolaus Esterhazy Sinfonia
by artist: Michael Halasz
by artist: Alan Titus
by artist: Gösta Winbergh
by artist: Inga Nielsen
by artist: Kurt Moll
by artist: Edith Lienbacher
by artist: Herwig Pecoraro
by artist: Péter Pálinkás
by artist: József Moldvay
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genre: classical
genre: classical-piano
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  date published: 2026-07-06T06:56:49Z
audio: Fidelio, Op. 72, Act II: Finale. Heil! Heil sei dem Tag! (People and Prisoners)
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Fidelio, Op. 72, Act I: Terzetto. Gut Sohnchen, gut (Rocco, Leonore, Marzelline)
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by artist: Wolfgang Glashof
by artist: Hungarian Radio Chorus
by artist: Nicolaus Esterhazy Sinfonia
by artist: Michael Halasz
by artist: Alan Titus
by artist: Gösta Winbergh
by artist: Inga Nielsen
by artist: Kurt Moll
by artist: Edith Lienbacher
by artist: Herwig Pecoraro
by artist: Péter Pálinkás
by artist: József Moldvay
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genre: classical
genre: classical-piano
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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Fidelio, Op. 72, Act I: March
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Fidelio, Op. 72, Act I: Aria and Chorus. Ha! Welch ein Augenblick! (Pizarro, the Watch)
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Fidelio, Op. 72, Act I: Finale. O welche Lust (Chorus of Prisoners)
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Fidelio, Op. 72: Abscheulicher! Wo eilst du hin?
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Violin Concerto in B-Flat Major, Op. 7 No. 2: I. Allegro moderato
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Violin Concerto in B-Flat Major, Op. 7 No. 2: II. Andante moderato
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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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Vaňhal: Symphonies, Vol. 5
type: MusicAlbum
date published: 2022-02-25
track: Symphony in F Minor, Bryan f1: I. Allegro moderato
  type: MusicRecording
  duration: PT5M21S
  duration ms: 321706
  explicit: false
  by artist: Johann Baptist Vanhal
  by artist: Czech Philharmonic Chamber Orchestra
  by artist: Michael Halasz
  in album: Vaňhal: Symphonies, Vol. 5
    type: MusicAlbum
    date published: 2022-02-25
  popularity: 10
  genre: classical
  isrc code: HKI192118301
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T05:58:12+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xbdc615f0bf3ac70275eabccab376fe9b019a7e75828599457828912055ebfd97
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957145
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957145
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI192118301
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T08:56:20Z
  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 0xbdc615f0bf3ac70275eabccab376fe9b019a7e75828599457828912055ebfd97. 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/HKI192118301.
    date published: 2026-07-08T08:56:20Z
  audio: Symphony in F Minor, Bryan f1: I. Allegro moderato
    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
      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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      value: -22.089
    additional property: Key Name
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    additional property: Mode Name
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track: Symphony in F Minor, Bryan f1: II. Cantabile
  type: MusicRecording
  duration: PT5M18S
  duration ms: 318613
  explicit: false
  by artist: Johann Baptist Vanhal
  by artist: Pavla Honsová
  by artist: Czech Philharmonic Chamber Orchestra
  by artist: Michael Halasz
  in album: Vaňhal: Symphonies, Vol. 5
    type: MusicAlbum
    date published: 2022-02-25
  popularity: 0
  genre: classical
  isrc code: HKI192118302
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
    type: PropertyValue
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  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/HKI192118302
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:53:27Z
  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 0x19c315a839ab6a3f756f19da9a4a2497a668ac508483c501d65cd41efec836cb. 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/HKI192118302.
    date published: 2026-07-08T03:53:27Z
  audio: Symphony in F Minor, Bryan f1: II. Cantabile
    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: 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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      value: Major
track: Symphony in F Minor, Bryan f1: III. Allegro molto
  type: MusicRecording
  duration: PT5M53S
  duration ms: 353773
  explicit: false
  by artist: Johann Baptist Vanhal
  by artist: Czech Philharmonic Chamber Orchestra
  by artist: Michael Halasz
  in album: Vaňhal: Symphonies, Vol. 5
    type: MusicAlbum
    date published: 2022-02-25
  popularity: 1
  genre: classical
  isrc code: HKI192118303
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T06:05:33+00:00
  additional property: CopyrightChainExplorerURL
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Symphony in F Minor, Bryan f1: III. Allegro molto
track: Symphony in E-Flat Major, Bryan Eb4: II. Andante scherzando
track: Symphony in E-Flat Major, Bryan Eb4: IV. Allegro molto
track: Symphony in C Major, Op. 25, Bryan C7b: II. Andante molto
track: Symphony in C Major, Op. 25, Bryan C7b: IV. Allegro
track: Oboe Concertino in G Major, Bryan G5: II. Minuetto. Moderato
track: Oboe Concertino in G Major, Bryan G5: III. Adagio

CopyrightChainExplorerURL
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value: https://explorer.copyrightchains.com/tx/0xbdc68ae84c22fa4b74c75ff82a496ec58b72f631f5509fc204c95d46cbd558b9

OTSHash
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OTSBitcoinBlock
type: PropertyValue
value: 957118

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/957118

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI192118303

OTSTimestamp
type: PropertyValue
value: 2026-07-08T03:20:19Z

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 0xbdc68ae84c22fa4b74c75ff82a496ec58b72f631f5509fc204c95d46cbd558b9. 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/HKI192118303.
date published: 2026-07-08T03:20:19Z

Symphony in F Minor, Bryan f1: III. Allegro molto
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
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.361
additional property: Energy
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additional property: Speechiness
  type: PropertyValue
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additional property: Acousticness
  type: PropertyValue
  value: 0.985
additional property: Instrumentalness
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  value: 0.743
additional property: Liveness
  type: PropertyValue
  value: 0.171
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.226
additional property: Loudness (dB)
  type: PropertyValue
  value: -22.567
additional property: Key Name
  type: PropertyValue
  value: F
additional property: Mode Name
  type: PropertyValue
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Symphony in E-Flat Major, Bryan Eb4: II. Andante scherzando
type: MusicRecording
duration: PT5M7S
duration ms: 307400
explicit: false
by artist: Johann Baptist Vanhal
by artist: Czech Philharmonic Chamber Orchestra
by artist: Michael Halasz
in album: Vaňhal: Symphonies, Vol. 5
  type: MusicAlbum
  date published: 2022-02-25
popularity: 0
genre: classical
isrc code: HKI192118305
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: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957124
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI192118305
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:53:27Z
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 0x14dc3d8b20772c01b94bc97c6facb267a46af443eeb6177f0b329a74a08abae9. 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/HKI192118305.
  date published: 2026-07-08T03:53:27Z
audio: Symphony in E-Flat Major, Bryan Eb4: II. Andante scherzando
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
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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
    value: 0.156
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.274
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.612
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Major

Symphony in E-Flat Major, Bryan Eb4: IV. Allegro molto
type: MusicRecording
duration: PT5M19S
duration ms: 319000
explicit: false
by artist: Johann Baptist Vanhal
by artist: Czech Philharmonic Chamber Orchestra
by artist: Michael Halasz
in album: Vaňhal: Symphonies, Vol. 5
  type: MusicAlbum
  date published: 2022-02-25
popularity: 0
genre: classical
isrc code: HKI192118307
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T17:03:01+00:00
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957145
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI192118307
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T08:56:20Z
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 0xcb1414c453f7a36a824a0c9d0e57460430bd0df8c5b52f88ff5d4dd5b497a850. 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/HKI192118307.
  date published: 2026-07-08T08:56:20Z
audio: Symphony in E-Flat Major, Bryan Eb4: IV. Allegro molto
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 139.594
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
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  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.352
  additional property: Energy
    type: PropertyValue
    value: 0.09
  additional property: Speechiness
    type: PropertyValue
    value: 0.036
  additional property: Acousticness
    type: PropertyValue
    value: 0.975
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.751
  additional property: Liveness
    type: PropertyValue
    value: 0.104
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.256
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.46
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Symphony in C Major, Op. 25, Bryan C7b: II. Andante molto
type: MusicRecording
duration: PT4M30S
duration ms: 270920
explicit: false
by artist: Johann Baptist Vanhal
by artist: Czech Philharmonic Chamber Orchestra
by artist: Michael Halasz
in album: Vaňhal: Symphonies, Vol. 5
  type: MusicAlbum
  date published: 2022-02-25
popularity: 0
genre: classical
isrc code: HKI192118309
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T13:26:30+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdc1d93fd723d56d3c0b7b7cdc39cd93971966e00afc669e7308792ba8c08bbc7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI192118309
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 0xdc1d93fd723d56d3c0b7b7cdc39cd93971966e00afc669e7308792ba8c08bbc7. 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/HKI192118309.
  date published: 2026-07-08T03:22:41Z
audio: Symphony in C Major, Op. 25, Bryan C7b: II. Andante molto
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
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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
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.187
  additional property: Energy
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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
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
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  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
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Symphony in C Major, Op. 25, Bryan C7b: IV. Allegro
type: MusicRecording
duration: PT3M32S
duration ms: 212200
explicit: false
by artist: Johann Baptist Vanhal
by artist: Czech Philharmonic Chamber Orchestra
by artist: Michael Halasz
in album: Vaňhal: Symphonies, Vol. 5
  type: MusicAlbum
  date published: 2022-02-25
popularity: 0
genre: classical
isrc code: HKI192118311
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
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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/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI192118311
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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Schubert For Study
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track: Symphony in G Major, Op. 11 No. 1: I. Allegro

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date published: 2026-07-08T08:56:20Z

Symphonie Concertante in A Major, Op. 9 No. 2: II. Rondeau
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  date published: 2026-07-08T03:22:41Z
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Fisher: Symphonies Nos. 1-6
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Cimarosa: Overtures, Vol. 7
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Opéra-Comique Overtures
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    date published: 2026-07-08T03:20:19Z
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Hofmann: Flute Concertos, Vol. 3
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Russian Cello Concertos
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Cimarosa: Overtures, Vol. 4
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Schubert: Symphonies Nos. 8 & 9
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Bruch: Symphonies Nos. 1 and 2
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Joachim, J.: Violin Concerto, Op. 11, "In the Hungarian Style" / Violin Concerto in G Minor, Op. 3
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Strauss, R.: 4 Last Songs / 6 Lieder / Ariadne Auf Naxos (Excerpts)
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Mozart: Mass No. 18 in C Minor, K. 427, 'Great' / Kyrie in D Minor, K. 341
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Liszt: Symphonic Poems, Vol. 4
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Liszt: Symphonic Poems, Vol. 3
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Mozart: Don Giovanni (Highlights)
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Soprano Arias
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  by artist: Michelle Breedt
  by artist: Orsolya Safar
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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: 2026-07-08T08:56:20Z
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track: Le nozze di Figaro, K. 492: Act I No. 6: Aria - Non so piu cosa son faccio
track: Le nozze di Figaro, K. 492: Act I No. 10: Aria - Non piu andrai, farfallone amoroso
track: Le nozze di Figaro, K. 492: Act II No. 12: Arietta - Voi, che sapete

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by artist: Judith Halász
by artist: Michelle Breedt
by artist: Orsolya Safar
by artist: Gabriele Sima
by artist: Alexander Klinger
by artist: Michael Roider
by artist: Bo Skovhus
by artist: Peter Koves
by artist: Janusz Monarcha
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by artist: Nicolaus Esterhazy Sinfonia
by artist: Michael Halasz
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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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Le nozze di Figaro, K. 492: Act I No. 10: Aria - Non piu andrai, farfallone amoroso
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by artist: Gabriele Sima
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by artist: Michael Roider
by artist: Bo Skovhus
by artist: Peter Koves
by artist: Janusz Monarcha
by artist: Renato Girolami
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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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Le nozze di Figaro, K. 492: Act II No. 12: Arietta - Voi, che sapete
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by artist: Michael Roider
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by artist: Janusz Monarcha
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Le nozze di Figaro, K. 492: Act II No. 12: Arietta - Voi, che sapete
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Mozart: Don Giovanni
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Rubinstein: Violin Concerto - Cui: Suite Concertante
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Lalo: Cello Concerto in D Minor / Cello Sonata
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Schreker: Ferne Klang (Der)
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Bellini: Norma (1831 Edition for 2 Sopranos)
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track: Fidelio, Op. 72: Overture
track: Fidelio, Op. 72, Act II: Introduction and Aria. Gott! Welch' Dunkel hier! (Florestan)
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-06T07:16:32Z
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track: Fidelio, Op. 72, Act I: Duet. Jetzt, Schatzchen, jetzt sind wir allein (Jaquino, Marzelline)
track: Fidelio, Op. 72, Act I: Aria. O war' ich schon mit dir vereint (Marzelline)
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    date published: 2026-07-06T07:16:32Z
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track: Fidelio, Op. 72, Act I: Quartet: Mir ist so wunderbar (Marzelline, Leonore, Rocco, Jaquino)
track: Fidelio, Op. 72, Act II: Quartet: Er sterbe! (Pizarro, Florestan, Leonore, Rocco)
track: Fidelio, Op. 72, Act I: Aria. Hat man nicht auch Gold beineben (Rocco)
track: Fidelio, Op. 72, Act II: Finale. Heil! Heil sei dem Tag! (People and Prisoners)
track: Fidelio, Op. 72, Act I: Terzetto. Gut Sohnchen, gut (Rocco, Leonore, Marzelline)
track: Fidelio, Op. 72, Act II: Wer ein holdes Weib errungen (People and Prisoners, Florestan, Leonore, Marzelline, Jaquino, Rocco, Don Fernando)
track: Fidelio, Op. 72, Act I: March
track: Fidelio, Op. 72, Act I: Aria and Chorus. Ha! Welch ein Augenblick! (Pizarro, the Watch)
track: Fidelio, Op. 72, Act I: Duet. Jetzt, Alter, jetzt hat es Eile! (Pizarro, Rocco)
track: Fidelio, Op. 72, Act I: Dialogue: Marzelline! Marzelline!! (Jaquino, Marzelline, Rocco, Leonore)
track: Fidelio, Op. 72, Act I: Finale. O welche Lust (Chorus of Prisoners)
track: Fidelio, Op. 72: Abscheulicher! Wo eilst du hin?

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Fidelio, Op. 72, Act I: Duet. Jetzt, Alter, jetzt hat es Eile! (Pizarro, Rocco)
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track: Piano Concerto No. 1 in B-Flat Minor, Op. 23: I. Allegro non troppo e molto maestoso (Opening)
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-07T16:07:00Z
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track: Emperor Waltz, Op. 437: Kaiser Walzer (Emperor Waltz), Op. 437
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  by artist: Strauss Festival Orchestra
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  subject of: OpenTimestamps Proof of Existence
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track: The Danube Waves: Valurile Dunarii (The Danube Waves)
track: Serenade for Strings in C Major, Op. 48: II. Walzer
track: Les Patineurs, Op. 183, "The Skater's Waltz"
track: Sobre las olas (Over the Waves)
track: The Nutcracker Suite, Op. 71a: VIII. Waltz of the Flowers

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OTSVerificationAPI
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OTSTimestamp
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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: 2026-07-08T03:20:19Z

Emperor Waltz, Op. 437: Kaiser Walzer (Emperor Waltz), Op. 437
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The Danube Waves: Valurile Dunarii (The Danube Waves)
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by artist: Budapest Strauss Ensemble
by artist: Istvan Bogar
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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: The Danube Waves: Valurile Dunarii (The Danube Waves)
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Serenade for Strings in C Major, Op. 48: II. Walzer
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by artist: Vienna Chamber Orchestra
by artist: Philippe Entremont
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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: 2026-07-08T03:53:27Z
audio: Serenade for Strings in C Major, Op. 48: II. Walzer
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Les Patineurs, Op. 183, "The Skater's Waltz"
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duration ms: 452293
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by artist: Émile Waldteufel
by artist: Slovak State Philharmonic Orchestra, Kosice
by artist: Alfred Walter
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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: Les Patineurs, Op. 183, "The Skater's Waltz"
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Sobre las olas (Over the Waves)
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by artist: Mexico Festival Orchestra
by artist: Enrique Bátiz
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genre: late-romantic-era
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Sobre las olas (Over the Waves)
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The Nutcracker Suite, Op. 71a: VIII. Waltz of the Flowers
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by artist: Slovak Radio Symphony Orchestra
by artist: Ondrej Lenard
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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A To Z Of Opera
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track: Stabat mater: Stabat mater dolorosa
track: Ode for St. Cecilia's Day, HWV 76: Air: What passion cannot Music raise

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6 Cantatas, "The Flowering and Fading of Love": No. 1. Da procella tempestosa, "La rosa": Largo
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Stabat mater: Stabat mater dolorosa
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Great Opera
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50 of the Best: Mozart
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  popularity: 3
  genre: classical
  genre: classical-era
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  additional property: OTSVerificationAPI
    type: PropertyValue
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  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T08:56:20Z
  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: 2026-07-08T08:56:20Z
  audio: Serenade No. 13 in G Major, K. 525, "Eine kleine Nachtmusik": I. Allegro
    type: AudioObject
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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track: Symphony No. 40 in G Minor, K. 550: I. Molto allegro
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  by artist: Wolfgang Amadeus Mozart
  by artist: Philharmonia Cassovia
  by artist: Johannes Wildner
  in album: 50 of the Best: Mozart
    type: MusicAlbum
    date published: 2011-11-15
  popularity: 3
  genre: classical
  genre: classical-era
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  additional property: CopyrightID
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199597004
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-07T13:52:39Z
  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 0x1bfb8eaaa341ecb54aea57990fd042e090b48d12972255af27bcdecd526806ff. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/HKI199597004.
    date published: 2026-07-07T13:52:39Z
  audio: Symphony No. 40 in G Minor, K. 550: I. Molto allegro
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Mode (Major/Minor)
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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track: Symphony No. 25 in G Minor, K. 183: I. Allegro con brio
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  by artist: Wolfgang Amadeus Mozart
  by artist: Capella Istropolitana
  by artist: Barry Wordsworth
  in album: 50 of the Best: Mozart
    type: MusicAlbum
    date published: 2011-11-15
  popularity: 2
  genre: classical
  genre: classical-era
  isrc code: HKI199280505
  additional property: CopyrightID
  additional property: CopyrightStatus
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  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Symphony No. 25 in G Minor, K. 183: I. Allegro con brio
track: Ave verum corpus, K. 618
track: Piano Concerto No. 23 in A Major, K. 488: II. Adagio
track: Fantasia in D Minor, K. 397
track: Symphony No. 38 in D Major, K. 504, "Prague": III. Finale: Presto

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OTSHash
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OTSBitcoinBlock
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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/HKI199280505

OTSTimestamp
type: PropertyValue
value: 2026-07-08T03:53:27Z

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 0xc356c08013434460981d0bce5edf328a492a724d7ad735ea7e8dd47e37d727c3. 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/HKI199280505.
date published: 2026-07-08T03:53:27Z

Symphony No. 25 in G Minor, K. 183: 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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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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Ave verum corpus, K. 618
type: MusicRecording
duration: PT2M47S
duration ms: 167266
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: St. Clement Concert Choir
by artist: St. Clement Concert Orchestra
by artist: Randall Swanson
in album: 50 of the Best: Mozart
  type: MusicAlbum
  date published: 2011-11-15
popularity: 2
genre: classical
genre: classical-era
isrc code: HKI199793613
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
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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/HKI199793613
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 0xd7338f8cb455a89f0df1e6867d5aeec5d459b1ec5a588ee5320eaf496087135a. 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/HKI199793613.
  date published: 2026-07-08T03:22:41Z
audio: Ave verum corpus, K. 618
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
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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: 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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Piano Concerto No. 23 in A Major, K. 488: II. Adagio
type: MusicRecording
duration: PT6M25S
duration ms: 385000
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Jenő Jandó
by artist: Concentus Hungaricus
by artist: Matyas Antal
in album: 50 of the Best: Mozart
  type: MusicAlbum
  date published: 2011-11-15
popularity: 3
genre: classical
genre: classical-era
isrc code: HKI199276902
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: 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/HKI199276902
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543cf7c80e36778f3c88fde8c5e4392179515504c2e8ae098bf5b1991abc3d46. 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/HKI199276902.
  date published: 2026-07-08T03:22:41Z
audio: Piano Concerto No. 23 in A Major, K. 488: II. Adagio
  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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    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: Key Name
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Fantasia in D Minor, K. 397
type: MusicRecording
duration: PT5M56S
duration ms: 356866
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Janos Sebestyen
in album: 50 of the Best: Mozart
  type: MusicAlbum
  date published: 2011-11-15
popularity: 2
genre: classical
genre: classical-era
isrc code: HKI199275608
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: 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/HKI199275608
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 0x8a8dceded1f53de8564a59736c01e1a2bfdc3f74905baacbff6a807e0963cd52. 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/HKI199275608.
  date published: 2026-07-08T03:20:19Z
audio: Fantasia in D Minor, K. 397
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
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  additional property: Musical Key
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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: Valence (Positivity)
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Symphony No. 38 in D Major, K. 504, "Prague": III. Finale: Presto
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duration: PT8M3S
duration ms: 483000
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Philharmonia Cassovia
by artist: Johannes Wildner
in album: 50 of the Best: Mozart
  type: MusicAlbum
  date published: 2011-11-15
popularity: 1
genre: classical
genre: classical-era
isrc code: HKI199597003
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: OTSHash
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
  type: PropertyValue
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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 0x75ef7c9108d1cc501456f794374c220a304ecbfca68581141744d9a844ffb714. 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/HKI199597003.
  date published: 2026-07-08T03:20:19Z
audio: Symphony No. 38 in D Major, K. 504, "Prague": III. Finale: Presto
  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: Danceability
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Violin Partita No. 3 in E Major, BWV 1006: I. Preludio
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by artist: Lucy van Dael
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T16:07:00Z
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Canon and Gigue: Canon
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by artist: Capella Istropolitana
by artist: Richard Edlinger
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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An der schonen, blauen Donau (The Beautiful Blue Danube), Op. 314
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by artist: Slovak Radio Symphony Orchestra
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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: An der schonen, blauen Donau (The Beautiful Blue Danube), Op. 314
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Symphony No. 5 in C Minor, Op. 67: I. Allegro con brio
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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: Symphony No. 5 in C Minor, Op. 67: I. Allegro con brio
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Liebesträume, S. 541: 3 Liebestraume, S541/R211: No. 3: Nocturne in A-Flat Major
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T18:50:38Z
audio: Liebesträume, S. 541: 3 Liebestraume, S541/R211: No. 3: Nocturne in A-Flat Major
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Bagatelle in A Minor, WoO 59, "Fur Elise"
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genre: classical
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T07:16:32Z
audio: Bagatelle in A Minor, WoO 59, "Fur Elise"
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Brandenburg Concerto No. 3 in G Major, BWV 1048: III. Allegro
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popularity: 5
genre: classical
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Brandenburg Concerto No. 3 in G Major, BWV 1048: III. Allegro
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Mandolin Concerto in C Major, RV 425: I. Allegro
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by artist: Paul O'Dette
by artist: The Parley of Instruments
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
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Die Walkure, Act III: Ride of the Valkyries
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by artist: Slovak Radio Symphony Orchestra
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
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Toccata and Fugue in D Minor, BWV 565: Toccata
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subject of: OpenTimestamps Proof of Existence
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audio: Toccata and Fugue in D Minor, BWV 565: Toccata
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1812 Festival Overture, Op. 49: 1812 Overture, Op. 49
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: 1812 Festival Overture, Op. 49: 1812 Overture, Op. 49
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Nocturne No. 2 in E-Flat Major, Op. 9, No. 2
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T18:39:05Z
audio: Nocturne No. 2 in E-Flat Major, Op. 9, No. 2
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The Planets, Op. 32: IV. Jupiter, the Bringer of Jollity
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  date published: 2026-07-08T03:22:41Z
audio: The Planets, Op. 32: IV. Jupiter, the Bringer of Jollity
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Viola Concerto in G Major: II. Allegro
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subject of: OpenTimestamps Proof of Existence
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audio: Viola Concerto in G Major: II. Allegro
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Music for the Royal Fireworks, HWV 351: IV. Le rejouissance
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Mass in B Minor, BWV 232: Agnus dei
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Bolero
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3 Gymnopedies: No. 1. Lent et douloureux
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Piano Concerto in A Minor, Op. 16: I. Allegro moderato
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The Well-Tempered Clavier, Book I: Well-Tempered Clavier, Book I: Prelude and Fugue No. 1 in C Major, BWV 846
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The 4 Seasons: Violin Concerto in F Minor, Op. 8, No. 4, RV 297, "L'inverno" (Winter): II. Largo
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Rinaldo, HWV 7a: Lascia ch'io pianga (Let me lament)
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by artist: Susanne Rydén
by artist: London Baroque
by artist: Charles Medlam
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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: Rinaldo, HWV 7a: Lascia ch'io pianga (Let me lament)
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Piano Sonata No. 14 in C-Sharp Minor, Op. 27, No. 2, "Moonlight": I. Adagio sostenuto
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duration: PT5M20S
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by artist: Jenő Jandó
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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: Piano Sonata No. 14 in C-Sharp Minor, Op. 27, No. 2, "Moonlight": I. Adagio sostenuto
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Suite bergamasque: III. Clair de lune (orch. A. Caplet)
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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: Suite bergamasque: III. Clair de lune (orch. A. Caplet)
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Goldberg Variations, BWV 988: I. Aria
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by artist: Jenő Jandó
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Goldberg Variations, BWV 988: I. Aria
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Gianni Schicchi: O mio babbino caro (Lauretta)
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by artist: Belgian Radio and Television Philharmonic Orchestra
by artist: Alexander Rahbari
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popularity: 3
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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: Gianni Schicchi: O mio babbino caro (Lauretta)
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Serse (Xerxes), HWV 40, Act I: Ombra mai fu: Largo (Serse)
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duration ms: 207266
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by artist: Jozsef Mukk
by artist: Camerata De Budapest
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popularity: 1
genre: classical
genre: early-music
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Serse (Xerxes), HWV 40, Act I: Ombra mai fu: Largo (Serse)
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Nabucco, Act III: Va, pensiero, "Chorus of Hebrew Slaves"
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by artist: Slovak Philharmonic Chorus
by artist: Slovak Radio Symphony Orchestra
by artist: Oliver von Dohnanyi
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popularity: 2
genre: classical
genre: opera
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Nabucco, Act III: Va, pensiero, "Chorus of Hebrew Slaves"
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Messiah, HWV 56, Part II: Hallelujah
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A Guided Tour of the Romantic Era, Vol. 3
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Classical Mellow Cello
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A Guided Tour of Nationalism in the Romantic Era, Vol. 8
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Cello Concertos
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Essential Masses, Vol. 2
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    date published: 2026-07-08T03:53:27Z
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    date published: 2026-07-08T03:20:19Z
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track: Così fan tutte, K. 588: Overture
track: Idomeneo, re di Creta, K. 366: Overture

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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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    date published: 2026-07-08T03:20:19Z
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    date published: 2026-07-06T07:53:57Z
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track: Serenade No. 13 in G Major, K. 525 "Eine kleine Nachtmusik": III. Menuetto: Allegretto - Trio - Menuetto da capo
track: Clarinet Concerto in A Major, K. 622: II. Adagio
track: Die Zauberflöte, K. 620: Act II: Pa-Pa-Pa-Pa-Pa-Pa-Papagena! (Papageno, Papagena)
track: Oboe Quartet in F Major, K. 370 (Arr. for Flute Quartet): III. Rondeau: Allegro
track: Piano Sonata No. 14 in C Minor, K. 457: I. Molto allegro
track: Piano Sonata No. 16 in C Major, K. 545 "Sonata facile": III. Rondo

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

Concerto for Flute and Harp in C Major, K. 299: II. Andantino
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Serenade No. 13 in G Major, K. 525 "Eine kleine Nachtmusik": III. Menuetto: Allegretto - Trio - Menuetto da capo
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  date published: 2026-07-08T03:22:41Z
audio: Serenade No. 13 in G Major, K. 525 "Eine kleine Nachtmusik": III. Menuetto: Allegretto - Trio - Menuetto da capo
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Oboe Quartet in F Major, K. 370 (Arr. for Flute Quartet): III. Rondeau: Allegro
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Piano Sonata No. 14 in C Minor, K. 457: I. Molto allegro
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Piano Sonata No. 16 in C Major, K. 545 "Sonata facile": III. Rondo
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  date published: 2026-07-08T03:22:41Z
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The Ultimate Mozart Opera Album
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A Guided Tour of the Classical Era, Vol. 2
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Cinema Classics 1998
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    date published: 2026-07-08T03:22:41Z
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Animals in Music
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The Essentials: Beethoven
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50 of the Best: Classical Music for Christmas
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The Very Best of Christmas
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Classical Music for the Christmas Holiday, Vol. 1
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My First Christmas Album
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A Guided Tour of Nationalism in the Romantic Era, Vol. 7
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Mozart: 30 of the Best
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The Essentials: Opera, Vol. 1
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Charming Cello
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Rejoice - A Vision of Christ Through Music
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50 of the Best: Romantic Symphonies
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Best of Opera, Vol. 5
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A Guided Tour of the Romantic Era, Vol. 8
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Opera Without Words - The Most Famous Overtures, Preludes, and Interludes in Opera
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