Franz Doppler
type: MusicGroup
description: thumb|upright|Franz Doppler, 1853 thumb|upright|Franz and Karl Doppler Albert Franz Doppler (16 October 182127 July 1883) was a flute virtuoso and a composer best known for his flute music. He also wr
popularity: 14
followers: 667
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  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 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. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin 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
subject of: OpenTimestamps Proof of Existence
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album: The Romance Of The Flute & Harp
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  date published: 1986-01-01
  track: Allegretto Op.116
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    by artist: Benjamin Godard
    by artist: Alphonse Hasselmans
    by artist: Gabriel Fauré
    by artist: Franz Doppler
    by artist: Felix Mendelssohn
    by artist: John Thomas
    by artist: Camille Saint-Saëns
    by artist: Georges Bizet
    by artist: Mitchell Parish
    by artist: Claude Debussy
    by artist: Philippa Davies
    in album: The Romance Of The Flute & Harp
      type: MusicAlbum
      date published: 1986-01-01
    genre: late-romantic-era
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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
    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-08-01T01:44:32Z
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  track: Frühlingslied (Spring Song)
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    by artist: Benjamin Godard
    by artist: Alphonse Hasselmans
    by artist: Gabriel Fauré
    by artist: Franz Doppler
    by artist: Felix Mendelssohn
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      date published: 1986-01-01
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-08T03:22:41Z
    audio: Frühlingslied (Spring Song)
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  track: Clair de lune (Moonlight)
album: Doppler: Caprice viennois
album: Flute Solo & Duo with Piano
album: F. & K. Doppler: The Complete Flute Music, Vol. 7
album: F. & C. Doppler: The Complete Flute Music, Vol. 5
album: F. & C. Doppler: The Complete Flute Music, Vol. 4
album: Franz & Karl Doppler: The Complete Flute Music, Vol. 1
album: Doppler, F. / Doppler, K.: Works for 2 Flutes and Piano
album: Franz & Karl Doppler: Con Bravura
album: Liszt: Hungarian Rhapsodies
album: Doppler, F. / Doppler, K.: Music for Flutes and Orchestra
album: Doppler: Works for 2 Flutes and Piano
album: Doppler, Franz / Karl: Complete Music for Flutes and Piano
album: Liszt: 3 Rhapsodies hongroises (Mono Version)
album: Liszt, Doppler: Rhapsodies hongroises Nos. 3, 4 & 6 (Mono Version)
album: Valse di Bravura for Two Flutes and Orchestra (World Premiere Recording)

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Clair de lune (Moonlight)
type: MusicRecording
duration: PT5M25S
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explicit: false
by artist: Felix Mendelssohn
by artist: John Thomas
by artist: Camille Saint-Saëns
by artist: Georges Bizet
by artist: Mitchell Parish
by artist: Claude Debussy
by artist: Benjamin Godard
by artist: Alphonse Hasselmans
by artist: Gabriel Fauré
by artist: Franz Doppler
by artist: Philippa Davies
in album: The Romance Of The Flute & Harp
  type: MusicAlbum
  date published: 1986-01-01
genre: classical
genre: early-romantic-era
genre: german-romanticism
genre: classical-piano
genre: choral
genre: chamber-music
isrc code: GBLGL0810180
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Clair de lune (Moonlight)
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  additional property: Tempo (BPM)
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Doppler: Caprice viennois
type: MusicAlbum
date published: 1993
track: Duettino hongrois, Op. 36
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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
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-31T06:58:00Z
  audio: Duettino hongrois, Op. 36
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Flute Solo & Duo with Piano
type: MusicAlbum
date published: 2021-03-31

F. & K. Doppler: The Complete Flute Music, Vol. 7
type: MusicAlbum
date published: 2018-05-04

F. & C. Doppler: The Complete Flute Music, Vol. 5
type: MusicAlbum
date published: 2017-11-03

F. & C. Doppler: The Complete Flute Music, Vol. 4
type: MusicAlbum
date published: 2017-10-27

Franz & Karl Doppler: The Complete Flute Music, Vol. 1
type: MusicAlbum
date published: 2017-01-06

Doppler, F. / Doppler, K.: Works for 2 Flutes and Piano
type: MusicAlbum
date published: 2014-07-15
track: Fantaisie sur des motifs hongroises, Op. 35
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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
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:20:19Z
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track: Andante et Rondo, Op. 25: Rondo
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  duration: PT4M16S
  duration ms: 256839
  explicit: false
  by artist: Franz Doppler
  by artist: Karl Doppler
  by artist: Bea berényi
  by artist: Ákos Dratsay
  by artist: László Révész
  in album: Doppler, F. / Doppler, K.: Works for 2 Flutes and Piano
    type: MusicAlbum
    date published: 2014-07-15
  isrc code: HUA253164803
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T03:25:50+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x551b3209934a5548c89add4956f451ddfafc4bd089fbcae6312c63d7f2b02a38
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960349
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960349
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA253164803
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T05:23:41Z
  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 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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551b3209934a5548c89add4956f451ddfafc4bd089fbcae6312c63d7f2b02a38. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/HUA253164803.
    date published: 2026-07-31T05:23:41Z
  audio: Andante et Rondo, Op. 25: Rondo
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
      value: 5
    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
      type: PropertyValue
      value: 0.992
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.929
    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.329
    additional property: Loudness (dB)
      type: PropertyValue
      value: -25.424
    additional property: Key Name
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      value: C
    additional property: Mode Name
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Franz & Karl Doppler: Con Bravura
type: MusicAlbum
date published: 2014-05-06

Liszt: Hungarian Rhapsodies
type: MusicAlbum
date published: 2013-08-27

Doppler, F. / Doppler, K.: Music for Flutes and Orchestra
type: MusicAlbum
date published: 2007-12-11

Doppler: Works for 2 Flutes and Piano
type: MusicAlbum
date published: 1998-10-17
track: Rigoletto-Fantasy pour 2 flûtes et piano, Op. 38
  type: MusicRecording
  duration: PT9M35S
  duration ms: 575000
  explicit: false
  by artist: Franz Doppler
  by artist: Karl Doppler
  by artist: Wolfgang Schulz
  by artist: Matthias Schulz
  by artist: Ferenc Bognar
  in album: Doppler: Works for 2 Flutes and Piano
    type: MusicAlbum
    date published: 1998-10-17
  isrc code: ATMA40510605
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T00:23:13+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x17156bdf26031eb801239016c00eb8bab17576e65b8fdb5d54bb70488ea5c959
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957118
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957118
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATMA40510605
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:20:19Z
  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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17156bdf26031eb801239016c00eb8bab17576e65b8fdb5d54bb70488ea5c959. 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/ATMA40510605.
    date published: 2026-07-08T03:20:19Z
  audio: Rigoletto-Fantasy pour 2 flûtes et piano, Op. 38
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 105.411
    additional property: Musical Key
      type: PropertyValue
      value: 4
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.357
    additional property: Energy
      type: PropertyValue
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    additional property: Speechiness
      type: PropertyValue
      value: 0.052
    additional property: Acousticness
      type: PropertyValue
      value: 0.988
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.898
    additional property: Liveness
      type: PropertyValue
      value: 0.083
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.177
    additional property: Loudness (dB)
      type: PropertyValue
      value: -24.489
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Souvenir de Prague sur des motifs Bohemiens pour 2 flûtes et piano, Op. 24
  type: MusicRecording
  duration: PT10M44S
  duration ms: 644666
  explicit: false
  by artist: Franz Doppler
  by artist: Karl Doppler
  by artist: Wolfgang Schulz
  by artist: Matthias Schulz
  by artist: Ferenc Bognar
  in album: Doppler: Works for 2 Flutes and Piano
    type: MusicAlbum
    date published: 1998-10-17
  isrc code: ATMA40510606
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T15:29:29+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x0d4f6ee681de81282b360c212455de631a09c932f5dd9f1cc866b99da94deb15
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957118
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957118
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATMA40510606
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:20:19Z
  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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4f6ee681de81282b360c212455de631a09c932f5dd9f1cc866b99da94deb15. 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/ATMA40510606.
    date published: 2026-07-08T03:20:19Z
  audio: Souvenir de Prague sur des motifs Bohemiens pour 2 flûtes et piano, Op. 24
    type: AudioObject
    additional property: Tempo (BPM)
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      value: 92.087
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
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      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
      type: PropertyValue
      value: 0.105
    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)
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      value: 0.12
    additional property: Loudness (dB)
      type: PropertyValue
      value: -26.284
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Fantaisie pastorale Hongroise pour flute et piano, Op. 26
  type: MusicRecording
  duration: PT10M45S
  duration ms: 645426
  explicit: false
  by artist: Franz Doppler
  by artist: Wolfgang Schulz
  by artist: Ferenc Bognar
  in album: Doppler: Works for 2 Flutes and Piano
    type: MusicAlbum
    date published: 1998-10-17
  isrc code: ATMA40510607
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T16:11:53+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xf4b68cb9d85d985c84402ea37634532e4f88f9aed7400ed866ed38f62dcf66c4
  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: Fantaisie pastorale Hongroise pour flute et piano, Op. 26
track: Andante et rondo, Op. 25: No. 1, Andante
track: Andante et rondo, Op. 25: No. 2, Rondo
track: Duettino sur des motifs Hongrois, Op. 36

OTSHash
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OTSBitcoinBlock
type: PropertyValue
value: 957124

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/957124

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATMA40510607

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 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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b68cb9d85d985c84402ea37634532e4f88f9aed7400ed866ed38f62dcf66c4. 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/ATMA40510607.
date published: 2026-07-08T03:53:27Z

Fantaisie pastorale Hongroise pour flute et piano, Op. 26
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 96.321
additional property: Musical Key
  type: PropertyValue
  value: 2
additional property: Mode (Major/Minor)
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  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.414
additional property: Energy
  type: PropertyValue
  value: 0.083
additional property: Speechiness
  type: PropertyValue
  value: 0.062
additional property: Acousticness
  type: PropertyValue
  value: 0.989
additional property: Instrumentalness
  type: PropertyValue
  value: 0.885
additional property: Liveness
  type: PropertyValue
  value: 0.113
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.124
additional property: Loudness (dB)
  type: PropertyValue
  value: -26.432
additional property: Key Name
  type: PropertyValue
  value: D
additional property: Mode Name
  type: PropertyValue
  value: Major

Andante et rondo, Op. 25: No. 1, Andante
type: MusicRecording
duration: PT4M11S
duration ms: 251293
explicit: false
by artist: Franz Doppler
by artist: Karl Doppler
by artist: Wolfgang Schulz
by artist: Matthias Schulz
by artist: Ferenc Bognar
in album: Doppler: Works for 2 Flutes and Piano
  type: MusicAlbum
  date published: 1998-10-17
isrc code: ATMA40510609
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T18:33:19+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1b1e178ec2c0cecc71e58d8f818bfda6d9cb3814a02f7461a671111c56dad7b6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960138
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960138
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATMA40510609
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T19:35:34Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1e178ec2c0cecc71e58d8f818bfda6d9cb3814a02f7461a671111c56dad7b6. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATMA40510609.
  date published: 2026-07-29T19:35:34Z
audio: Andante et rondo, Op. 25: No. 1, Andante
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 108.288
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
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    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.303
  additional property: Energy
    type: PropertyValue
    value: 0.079
  additional property: Speechiness
    type: PropertyValue
    value: 0.052
  additional property: Acousticness
    type: PropertyValue
    value: 0.984
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.924
  additional property: Liveness
    type: PropertyValue
    value: 0.089
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.12
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.375
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Andante et rondo, Op. 25: No. 2, Rondo
type: MusicRecording
duration: PT4M31S
duration ms: 271773
explicit: false
by artist: Franz Doppler
by artist: Karl Doppler
by artist: Wolfgang Schulz
by artist: Matthias Schulz
by artist: Ferenc Bognar
in album: Doppler: Works for 2 Flutes and Piano
  type: MusicAlbum
  date published: 1998-10-17
isrc code: ATMA40510610
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T14:08:00+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x340bc6bae7e9a3755d82646ae8af8a1b0672e6a93dec920239a2fa7facbc1acf
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960117
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960117
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATMA40510610
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T14:28:24Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340bc6bae7e9a3755d82646ae8af8a1b0672e6a93dec920239a2fa7facbc1acf. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/ATMA40510610.
  date published: 2026-07-29T14:28:24Z
audio: Andante et rondo, Op. 25: No. 2, Rondo
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 127.931
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.434
  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
    value: 0.047
  additional property: Acousticness
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  additional property: Instrumentalness
    type: PropertyValue
    value: 0.911
  additional property: Liveness
    type: PropertyValue
    value: 0.091
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.336
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.503
  additional property: Key Name
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    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Duettino sur des motifs Hongrois, Op. 36
type: MusicRecording
duration: PT7M27S
duration ms: 447400
explicit: false
by artist: Franz Doppler
by artist: Wolfgang Schulz
by artist: Matthias Schulz
by artist: Ferenc Bognar
in album: Doppler: Works for 2 Flutes and Piano
  type: MusicAlbum
  date published: 1998-10-17
isrc code: ATMA40510611
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
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additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x615fb86ad1e7eddfeeef831b643eef77139eb972e443063c6dcb8f840969fc6a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATMA40510611
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Duettino sur des motifs Hongrois, Op. 36
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Doppler, Franz / Karl: Complete Music for Flutes and Piano
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    date published: 2026-07-08T03:22:41Z
  audio: Rigoletto, fantasie, Op. 38
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track: Airs Valaques, Op. 10: Air valaques, Op. 10
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    date published: 2026-07-31T03:15:04Z
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track: Andante et Rondo, Op. 25: I. Andante
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  subject of: OpenTimestamps Proof of Existence
  audio: Andante et Rondo, Op. 25: I. Andante
track: Andante et Rondo, Op. 25: II. Rondo
track: Nocturne, Op. 17

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OTSVerifyInstructions
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OpenTimestamps Proof of Existence
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date published: 2026-07-08T03:20:19Z

Andante et Rondo, Op. 25: I. Andante
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Andante et Rondo, Op. 25: II. Rondo
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T22:27:30Z
audio: Andante et Rondo, Op. 25: II. Rondo
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Nocturne, Op. 17
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T21:25:57Z
audio: Nocturne, Op. 17
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Liszt: 3 Rhapsodies hongroises (Mono Version)
type: MusicAlbum
date published: 1958-01-01

Liszt, Doppler: Rhapsodies hongroises Nos. 3, 4 & 6 (Mono Version)
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date published: 1958-01-01

Valse di Bravura for Two Flutes and Orchestra (World Premiere Recording)
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