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genre: chamber music
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album: French Recital for Bassoon and Harp
  type: MusicAlbum
  date published: 2004
album: French Recital for Harp and String Quartet
  type: MusicAlbum
  date published: 2004
album: French Recital for Bassoon and Harp
  type: MusicAlbum
  date published: 2004-07-11
album: Hommage à Debussy
  type: MusicAlbum
  date published: 2007
album: German Recital for Bassoon and Harp
  type: MusicAlbum
  date published: 2008
album: French Recital for Viola and Harp
  type: MusicAlbum
  date published: 2008
album: French Recital for Viola and Harp
  type: MusicAlbum
  date published: 2008-07-11
album: German Recital for Flute and Harp, Vol. 1
  type: MusicAlbum
  date published: 2009
album: German Recital for Flute and Harp, Vol. 1
  type: MusicAlbum
  date published: 2009-07-11
album: The School of Harp in France, Vol. 3 (Concertos)
  type: MusicAlbum
  date published: 2010
album: British Chamber Music for Flute, Viola and Harp
  type: MusicAlbum
  date published: 2011
album: Belgian Chamber Music
  type: MusicAlbum
  date published: 2012
album: French Chamber Music for Flute, Viola and Harp
  type: MusicAlbum
  date published: 2012
album: French Chamber Music for Flute, Viola and Harp
  type: MusicAlbum
  date published: 2012-07-11
album: German Recital for Flute and Harp, Vol. 1
  type: MusicAlbum
  date published: 2013-08-01
album: French Music for Harp and String Quartet
  type: MusicAlbum
  date published: 2013-08-01
album: Belgian Chamber Music
  type: MusicAlbum
  date published: 2013-08-29
album: French Recital for Clarinet and Harp
  type: MusicAlbum
  date published: 2014
album: The School of Harp in France, Vol. 4
  type: MusicAlbum
  date published: 2015
album: In the Light of Ravel
  type: MusicAlbum
  date published: 2016
album: Jewish Composers: The Escapers
  type: MusicAlbum
  date published: 2017
album: Jewish Composers: The Escapers
  type: MusicAlbum
  date published: 2017-09-15
album: Belgian Composers: pièces à cinq
  type: MusicAlbum
  date published: 2020-10-16
track: Chanson de Mai in D-Flat Major, Op. 40
track: Ballade in A-Flat Minor
track: Confidence for Cello and Harp in A-Flat Major, Op. 24
track: La source in F Major, Op. 44
track: Conte de Noël in E-Flat Minor, Op. 33
track: Nocturne in G-Flat Major, Op. 43

Chanson de Mai in D-Flat Major, Op. 40
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genre: french-romanticism
genre: harp
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  date published: 2026-07-02T03:55:08Z
audio: Chanson de Mai in D-Flat Major, Op. 40
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Ballade in A-Flat Minor
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  date published: 2026-07-08T03:53:27Z
audio: Ballade in A-Flat Minor
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Confidence for Cello and Harp in A-Flat Major, Op. 24
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  date published: 2026-07-08T03:20:19Z
audio: Confidence for Cello and Harp in A-Flat Major, Op. 24
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La source in F Major, Op. 44
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audio: La source in F Major, Op. 44
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Conte de Noël in E-Flat Minor, Op. 33
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

Nocturne in G-Flat Major, Op. 43
type: MusicRecording
duration: PT4M19S
duration ms: 259733
explicit: false
by artist: Alphonse Hasselmans
by artist: Rachel Talitman
in album: Alphonse Hasselmans (1845-1912)
  type: MusicAlbum
  date published: 2014
genre: french-romanticism
genre: harp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931da184bd6c0ca4f434a3b2afcffb642162714831f42ee8a9516a723293c114. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/USCGJ1424930.
  date published: 2026-08-01T02:22:04Z
audio: Nocturne in G-Flat Major, Op. 43
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 123.586
  additional property: Musical Key
    type: PropertyValue
    value: 6
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.359
  additional property: Energy
    type: PropertyValue
    value: 0.086
  additional property: Speechiness
    type: PropertyValue
    value: 0.052
  additional property: Acousticness
    type: PropertyValue
    value: 0.989
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.939
  additional property: Liveness
    type: PropertyValue
    value: 0.106
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.122
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.715
  additional property: Key Name
    type: PropertyValue
    value: F#
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: USCGJ1424930
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960497
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-08-01T02:22:04+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ1424930
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960497
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960497
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-08-01T02:22:04+00:00
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch