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genre: chamber music
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track: Quatre Variations sur un Thème de Domenico Scarlatti: IV. Variation III
track: Quatre Variations sur un Thème de Domenico Scarlatti: V. Variation IV
track: Fantaisie en mi Bémol: III. Allegro molto, con Fuoco (Arr. For Trumpet and Piano by Henri Busser)
track: Morceau de Concours: I. Lent
track: Quatre Variations sur un Thème de Domenico Scarlatti: I. Thema
track: Quatre Variations sur un Thème de Domenico Scarlatti: II. Variation I
track: Quatre Variations sur un Thème de Domenico Scarlatti: III. Variation II
track: Fantaisie en mi Bémol: I. Andantino con Moto (Arr. For Trumpet and Piano by Henri Busser)

Quatre Variations sur un Thème de Domenico Scarlatti: IV. Variation III
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by artist: Hannes Läubin
by artist: Lukas Maria Kuen
in album: Solos De Concours (French Music for Trumpet and Piano)
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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
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Quatre Variations sur un Thème de Domenico Scarlatti: IV. Variation III
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Quatre Variations sur un Thème de Domenico Scarlatti: V. Variation IV
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by artist: Hannes Läubin
by artist: Lukas Maria Kuen
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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: Quatre Variations sur un Thème de Domenico Scarlatti: V. Variation IV
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Fantaisie en mi Bémol: III. Allegro molto, con Fuoco (Arr. For Trumpet and Piano by Henri Busser)
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explicit: false
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by artist: Hannes Läubin
by artist: Lukas Maria Kuen
in album: Solos De Concours (French Music for Trumpet and Piano)
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  date published: 2006-05-01
genre: classical
genre: late-romantic-era
genre: french-romanticism
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additional property: OTSVerifyInstructions
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  date published: 2026-07-02T03:55:08Z
audio: Fantaisie en mi Bémol: III. Allegro molto, con Fuoco (Arr. For Trumpet and Piano by Henri Busser)
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Morceau de Concours: I. Lent
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by artist: Hannes Läubin
by artist: Lukas Maria Kuen
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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additional property: ProofProfileEvidenceStatus
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  date published: 2026-07-08T03:20:19Z
audio: Morceau de Concours: I. Lent
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Quatre Variations sur un Thème de Domenico Scarlatti: I. Thema
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by artist: Lukas Maria Kuen
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  date published: 2026-07-30T04:47:22Z
audio: Quatre Variations sur un Thème de Domenico Scarlatti: I. Thema
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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 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

Quatre Variations sur un Thème de Domenico Scarlatti: II. Variation I
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  date published: 2026-07-30T14:44:50Z
audio: Quatre Variations sur un Thème de Domenico Scarlatti: II. Variation I
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  additional property: Loudness (dB)
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additional property: CopyrightID
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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additional property: OTSVerificationAPI
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additional property: OTSHash
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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

Quatre Variations sur un Thème de Domenico Scarlatti: III. Variation II
type: MusicRecording
duration: PT0M52S
duration ms: 52760
explicit: false
by artist: Marcel Bitsch
by artist: Hannes Läubin
by artist: Lukas Maria Kuen
in album: Solos De Concours (French Music for Trumpet and Piano)
  type: MusicAlbum
  date published: 2006-05-01
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91181246a0f604f32e6b4c7f2e0540f16a4d09c26daf2a40e814aca52a26c4c8. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/DEE210652114.
  date published: 2026-07-30T00:53:20Z
audio: Quatre Variations sur un Thème de Domenico Scarlatti: III. Variation II
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  additional property: Tempo (BPM)
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    value: 131.148
  additional property: Musical Key
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  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
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    type: PropertyValue
    value: 5
  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
    type: PropertyValue
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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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isrc code: DEE210652114
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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

Fantaisie en mi Bémol: I. Andantino con Moto (Arr. For Trumpet and Piano by Henri Busser)
type: MusicRecording
duration: PT2M25S
duration ms: 145573
explicit: false
by artist: Camille Saint-Saëns
by artist: Hannes Läubin
by artist: Lukas Maria Kuen
in album: Solos De Concours (French Music for Trumpet and Piano)
  type: MusicAlbum
  date published: 2006-05-01
genre: classical
genre: late-romantic-era
genre: french-romanticism
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0478bd71e1aa2fa2f4514a7f88d01e1568d9f5d6788ea2eb240a9f69fbfd628e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEE210652117.
  date published: 2026-07-31T12:24:41Z
audio: Fantaisie en mi Bémol: I. Andantino con Moto (Arr. For Trumpet and Piano by Henri Busser)
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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
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
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  additional property: Valence (Positivity)
    type: PropertyValue
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  additional property: Loudness (dB)
    type: PropertyValue
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    type: PropertyValue
    value: Eb
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isrc code: DEE210652117
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: BitcoinTime
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additional property: OTSVerificationAPI
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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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 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