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description: Denis Matthews (27 February 191925 December 1988) was an English pianist and musicologist whose performing career flourished after the war, during the 1950s and into the 1960s. He later turned increas
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  track: Suite bergamasque, L. 75: III. Clair de lune
  track: Liebestraum No. 3 in A-Flat Major, S. 541
  track: Gymnopédies: No. 1 Lent et douloureux
  track: String Quartet No. 3, Op. 94: I. Duets: With moderate movement
  track: Images pour orchestre: II. Ibéria - Les parfums de la nuit
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  track: The Mood That Passes Through You
  track: Variations on an Original Theme for Orchestra, Op. 36, "Enigma": IX. "Nimrod"
  track: The Girl with the Flaxen Hair
  track: Brandenburg Concerto No. 5 in D Major, BWV 1050: II. Affettuoso
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album: Mozart For Brain Power
album: 100 Relaxing Classics for Study
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album: Haydn, Mozart, Beethoven & Schumann: Works for Horn
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album: 30 Classical Playlist for Babies
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album: 50 Piano Classics for Relaxation
album: 30 Piano Classics for Relaxation
album: The Great German Composers
album: Deep Relaxation - Mozart, Beethoven & Bach
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Piano Concerto No. 23 in A Major, K. 488: II. Andante
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Piano Sonata No. 11 in A Major, K. 331, "Turkish March": III. Rondo: Alla turca (Allegretto)
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Concerto for Piano & Orchestra No. 9 in E-Flat Major, K. 271, "Jeunehomme": I. Allegro
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Piano Concerto No. 24 in C Minor, K.491, I. Allegro
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  date published: 2026-07-08T03:53:27Z
audio: Piano Concerto No. 24 in C Minor, K.491, I. Allegro
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Piano Concerto No. 21 in D Minor, K.466, I. Allegro
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  date published: 2026-07-31T16:07:24Z
audio: Piano Concerto No. 21 in D Minor, K.466, I. Allegro
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Piano Concerto No. 21 in D Minor, K.466, II. Romance
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  date published: 2026-07-31T18:48:12Z
audio: Piano Concerto No. 21 in D Minor, K.466, II. Romance
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additional property: OTSVerifyInstructions
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Beethoven: Horn Sonata in F Major, Op. 17: I. Allegro moderato
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by artist: Denis Matthews
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  date published: 2026-07-08T03:53:27Z
audio: Beethoven: Horn Sonata in F Major, Op. 17: I. Allegro moderato
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Sonata in B flat Major, K. 333: i. Allegro
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audio: Sonata in B flat Major, K. 333: i. Allegro
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Sonata in B flat Major, K. 333: ii. Adagio
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Sonata in C Minor, K. 457: i. Molto allegro
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    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Sonata in C Minor, K. 457: ii. Adagio
type: MusicRecording
duration: PT6M55S
duration ms: 415386
explicit: false
by artist: Mozart
by artist: Denis Matthews
in album: Big Mozart Box
  type: MusicAlbum
  date published: 2013-01-27
isrc code: USKO11300076
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T12:46:53+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x20c5d4b2bc4a666a78f5f0f90c894ff6fd9a0b4404b24b4a1edf342b97789415
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/USKO11300076
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19+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
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: 957118
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c5d4b2bc4a666a78f5f0f90c894ff6fd9a0b4404b24b4a1edf342b97789415. 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/USKO11300076.
  date published: 2026-07-08T08:56:20Z
audio: Sonata in C Minor, K. 457: ii. Adagio
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 143.656
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.272
  additional property: Energy
    type: PropertyValue
    value: 0.038
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.991
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.913
  additional property: Liveness
    type: PropertyValue
    value: 0.106
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.218
  additional property: Loudness (dB)
    type: PropertyValue
    value: -32.924
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Sonata in B flat Major, K. 333: iii. Allegro assai
type: MusicRecording
duration: PT6M15S
duration ms: 375080
explicit: false
by artist: Mozart
by artist: Denis Matthews
in album: Big Mozart Box
  type: MusicAlbum
  date published: 2013-01-27
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f188c7b5d20e9e03a4641fb4be25627c04322cd8fe81fcf00da949078c1759. 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/USKO11300073.
  date published: 2026-07-29T19:35:34Z
audio: Sonata in B flat Major, K. 333: iii. Allegro assai
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 104.148
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.34
  additional property: Energy
    type: PropertyValue
    value: 0.123
  additional property: Speechiness
    type: PropertyValue
    value: 0.046
  additional property: Acousticness
    type: PropertyValue
    value: 0.989
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.928
  additional property: Liveness
    type: PropertyValue
    value: 0.091
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.418
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.669
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: USKO11300073
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: 960138
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-29T19:35:34+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USKO11300073
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: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T19:35:34+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

Fantasie in C Minor, K. 475
type: MusicRecording
duration: PT11M7S
duration ms: 667240
explicit: false
by artist: Mozart
by artist: Denis Matthews
in album: Big Mozart Box
  type: MusicAlbum
  date published: 2013-01-27
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ffdd8a4356d119de48c23cab4e10edf3d4cf5b3a13b1a1c7900323fbc4176d. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/USKO11300074.
  date published: 2026-07-30T21:00:46Z
audio: Fantasie in C Minor, K. 475
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 143.628
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.331
  additional property: Energy
    type: PropertyValue
    value: 0.039
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
    type: PropertyValue
    value: 0.99
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.953
  additional property: Liveness
    type: PropertyValue
    value: 0.086
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.09
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.177
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: USKO11300074
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: 960314
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-30T21:00:46+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USKO11300074
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960314
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960314
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T21:00:46+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

Sonata in C Minor, K. 457: iii. Allegro assai
type: MusicRecording
duration: PT4M45S
duration ms: 285146
explicit: false
by artist: Mozart
by artist: Denis Matthews
in album: Big Mozart Box
  type: MusicAlbum
  date published: 2013-01-27
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7033048cd0a85c4cddbb6fe3acbc7dd2b799cbb0f252a203a0d0ec8d5cde544c. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USKO11300077.
  date published: 2026-07-31T19:53:13Z
audio: Sonata in C Minor, K. 457: iii. Allegro assai
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 128.968
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.379
  additional property: Energy
    type: PropertyValue
    value: 0.107
  additional property: Speechiness
    type: PropertyValue
    value: 0.046
  additional property: Acousticness
    type: PropertyValue
    value: 0.984
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.922
  additional property: Liveness
    type: PropertyValue
    value: 0.115
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.155
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.238
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Minor
isrc code: USKO11300077
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: 960455
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-31T19:53:13+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USKO11300077
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960455
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960455
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T19:53:13+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

Piano Sonata in B-Flat Major, K. 333: III. Allegretto grazioso
type: MusicRecording
duration: PT6M8S
duration ms: 368813
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Denis Matthews
by artist: Hans Swarowsky
by artist: Vienna State Opera Orchestra
in album: Classical Music for the Brain
  type: MusicAlbum
  date published: 2014-08-30
genre: classical
genre: classical-era
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bed5542aad7ca5e3306e1a8925587be56da5a84cfbf12a09edd2ac5de5e1ca0. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/US6R21495285.
  date published: 2026-07-31T23:30:38Z
audio: Piano Sonata in B-Flat Major, K. 333: III. Allegretto grazioso
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 104.481
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.323
  additional property: Energy
    type: PropertyValue
    value: 0.177
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.986
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.952
  additional property: Liveness
    type: PropertyValue
    value: 0.111
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.464
  additional property: Loudness (dB)
    type: PropertyValue
    value: -28.053
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: US6R21495285
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: 960478
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-31T23:30:38+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US6R21495285
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960478
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960478
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T23:30:38+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

Valence (Positivity)
type: PropertyValue
value: 0.208

Loudness (dB)
type: PropertyValue
value: -22.501

Key Name
type: PropertyValue
value: Ab

Mode Name
type: PropertyValue
value: Major

Suite bergamasque, L. 75: III. Clair de lune
type: MusicRecording
duration: PT4M55S
duration ms: 295366
explicit: false
by artist: Claude Debussy
by artist: Northern String Quartet
in album: Classical Music for Studying
  type: MusicAlbum
  date published: 2015-01-14
genre: classical
genre: impressionism
genre: post-romantic-era
isrc code: QMFMG1424202
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-08T20:50:05+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa28658aec2093437350de2dab43bdc048c12b925b5df9f40de34ca569dee010a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957120
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/QMFMG1424202
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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28658aec2093437350de2dab43bdc048c12b925b5df9f40de34ca569dee010a. 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/QMFMG1424202.
  date published: 2026-07-08T03:22:41Z
audio: Suite bergamasque, L. 75: III. Clair de lune
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 100.544
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.229
  additional property: Energy
    type: PropertyValue
    value: 0.096
  additional property: Speechiness
    type: PropertyValue
    value: 0.047
  additional property: Acousticness
    type: PropertyValue
    value: 0.926
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.046
  additional property: Liveness
    type: PropertyValue
    value: 0.09
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.053
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.884
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Liebestraum No. 3 in A-Flat Major, S. 541
type: MusicRecording
duration: PT4M38S
duration ms: 278476
explicit: false
by artist: Franz Liszt
by artist: Martin Jacoby
in album: Classical Music for Studying
  type: MusicAlbum
  date published: 2015-01-14
genre: classical
genre: late-romantic-era
isrc code: GBPS81400020
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-22T03:58:16+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbfc09aeb06f10c11006cc4fcb3b0f5fecfdc5836ec41ce593064cb7958a3facc
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/GBPS81400020
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 0xbfc09aeb06f10c11006cc4fcb3b0f5fecfdc5836ec41ce593064cb7958a3facc. 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/GBPS81400020.
  date published: 2026-07-08T08:56:20Z
audio: Liebestraum No. 3 in A-Flat Major, S. 541
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 105.604
  additional property: Musical Key
    type: PropertyValue
    value: 8
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.289
  additional property: Energy
    type: PropertyValue
    value: 0.095
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
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Gymnopédies: No. 1 Lent et douloureux
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String Quartet No. 3, Op. 94: I. Duets: With moderate movement
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Images pour orchestre: II. Ibéria - Les parfums de la nuit
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Melody in F
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Prelude in E-Flat Major, Op. 23, No. 6
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The Mood That Passes Through You
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Variations on an Original Theme for Orchestra, Op. 36, "Enigma": IX. "Nimrod"
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The Girl with the Flaxen Hair
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subject of: OpenTimestamps Proof of Existence
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Brandenburg Concerto No. 5 in D Major, BWV 1050: II. Affettuoso
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subject of: OpenTimestamps Proof of Existence
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Waltz in C-Sharp Minor, Op. 64, No. 2
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subject of: OpenTimestamps Proof of Existence
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audio: Waltz in C-Sharp Minor, Op. 64, No. 2
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Mozart For Brain Power
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    date published: 2026-07-08T03:53:27Z
  audio: Serenade No. 13 in G Major, K. 525, "Eine kleine Nachtmusik"
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track: Flute Concerto No. 2 in D Major, K. 314: I. Allegro aperto
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    date published: 2026-07-08T03:20:19Z
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track: Cassation in B-Flat Major, K. 99: VI. Menuet
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track: Requiem in D Minor, K 626: III. Sequentia: Dies irae
track: Violin Concerto No. 3 in G Major, K. 216: I. Allegro
track: Symphony No. 35 in D Major, K. 385 "Haffner": I. Allegro con spirito
track: Don Giovanni, K. 527: Overture
track: Don Giovanni, K. 527, Act I: "Ho capito, signor si"
track: Piano Concerto No. 23 in A Major, K. 488: II. Andante
track: Piano Sonata No. 11 in A Major, K. 331, "Turkish March": III. Rondo: Alla turca (Allegretto)
track: Concerto for Piano & Orchestra No. 9 in E-Flat Major, K. 271, "Jeunehomme": I. Allegro

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OpenTimestamps Proof of Existence
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Cassation in B-Flat Major, K. 99: VI. Menuet
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Requiem in D Minor, K 626: III. Sequentia: Dies irae
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Symphony No. 35 in D Major, K. 385 "Haffner": I. Allegro con spirito
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Don Giovanni, K. 527: Overture
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Don Giovanni, K. 527, Act I: "Ho capito, signor si"
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100 Relaxing Classics for Study
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Big Schubert Box
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Icon: Edwin Fischer
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Haydn, Mozart, Beethoven & Schumann: Works for Horn
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100 Intense Study Music for Reading
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100 Classical Pieces to Boost Your Brain
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100 Classical Pieces for Relaxation
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100 Relaxing Classical Pieces
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Bach to School
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track: Egmont, complete incidental music, Op. 84: ii. Lied: Die Trommel gerühret! (Roll the drum)
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Piano Sonata No. 8 in C Minor, Op. 13 ('Pathétique') ii. Adagio cantabile
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Cello Sonata in F Major, Op. 5, No. 1: ii. Rondo: Allegro vivace
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Cello Sonata in G Minor, Op. 5, No. 2: i. Adagio sostenuto e espressivo (attaca)
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subject of: OpenTimestamps Proof of Existence
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Cello Sonata No. 3 in A Minor, Op. 69: i. Allegro ma non tanto
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  date published: 2026-07-08T03:20:19Z
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Cello Sonata No. 4 in C Major, Op. 102, No. 1: i. Andante; Allegro vivace
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  date published: 2026-07-08T03:53:27Z
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Cello Sonata No. 4 in C Major, Op. 102, No. 1: ii. Adagio. Tempo d'andante; Allegro con brio
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  date published: 2026-07-08T08:56:20Z
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Egmont, complete incidental music, Op. 84: ii. Lied: Die Trommel gerühret! (Roll the drum)
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  date published: 2026-07-08T08:56:20Z
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Horn Concerto No. 2 in E-flat Major, K. 417: iii. Rondo: Allegro
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Overture to Marriage of Figaro, K. 492
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Classical Music for the Brain
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track: Peer Gynt Suite No. 1, Op. 46: I. Morning Mood
track: New Pizzicato-Polka, Op. 449
track: Rhapsody on a Theme of Paganini, Op. 43: Variation 18. Andante cantabile
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Guitar Concerto in D Major, RV 93: I. Allegro
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subject of: OpenTimestamps Proof of Existence
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audio: Peer Gynt Suite No. 1, Op. 46: I. Morning Mood
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New Pizzicato-Polka, Op. 449
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Rhapsody on a Theme of Paganini, Op. 43: Variation 18. Andante cantabile
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subject of: OpenTimestamps Proof of Existence
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Pavane in F-Sharp Minor, Op. 50
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Pavane in F-Sharp Minor, Op. 50
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Le quattro stagioni, Concerto No. 1 in E Major, Op. 8, RV 269, "Spring" : I. Allegro
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  date published: 2026-07-08T03:20:19Z
audio: Le quattro stagioni, Concerto No. 1 in E Major, Op. 8, RV 269, "Spring" : I. Allegro
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Prince of Denmark's March - King William's March
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  date published: 2026-07-08T03:22:41Z
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Symphony No. 36 in C Major, K. 425, "Linz": II. Andante
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Herz und Mund und Tat und Leben Cantata, BWV 147: X. Jesu, Joy of Man's Desiring
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Concerto for Viola, Strings & Continuo in G Major, TWV 51G9: I. Largo
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Lieutenant Kijé Suite, Op. 60: II. Romance
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Lyric Pieces, Op. 54: IV. Notturno
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Serenade No. 11 for Wind Instruments in E-Flat Major, K. 375: III. Adagio
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Le quattro stagioni, Concerto No. 4 in F Minor, Op. 8, RV 297, "Winter": II. Largo
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Variations on an Original Theme for Orchestra, Op. 36 "Enigma": IX. "Nimrod"
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Liebestraum No. 3, S. 541
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Nocturnes, L. 91: I. Nuages
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Serenade No. 12 for wind Instruments in C Minor, K. 388, "Nacht Musique": II. Andante
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Concerto for Oboe, Strings & Continuo in E Minor, TWV 51e1: I. Andante
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Piano Sonata No. 8 in C Minor, Op. 13, "Pathétique": III. Rondo
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Beethoven 50
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value: https://explorer.copyrightchains.com/tx/0x76c414943de6509849ca87dea262109787a816bf762713e08b32888a00ca38c8

OTSHash
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OTSBitcoinBlock
type: PropertyValue
value: 956304

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/956304

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA800115099

OTSTimestamp
type: PropertyValue
value: 2026-07-02T03:55:08Z

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 0x76c414943de6509849ca87dea262109787a816bf762713e08b32888a00ca38c8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA800115099.
date published: 2026-07-02T03:55:08Z

Symphony No. 5 in C Minor, Op. 67: III. Allegro
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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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  value: 5
additional property: Danceability
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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: 0.892
additional property: Instrumentalness
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  value: 0.849
additional property: Liveness
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additional property: Valence (Positivity)
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additional property: Loudness (dB)
  type: PropertyValue
  value: -24.609
additional property: Key Name
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  value: C
additional property: Mode Name
  type: PropertyValue
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Symphony No. 5 in C Minor, Op. 67: IV. Allegro
type: MusicRecording
duration: PT10M34S
duration ms: 634318
explicit: false
by artist: Ludwig van Beethoven
by artist: Kurt Masur
by artist: New York Philharmonic
in album: Beethoven 50
  type: MusicAlbum
  date published: 2017-03-23
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: DEA800115101
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0xe2bd9fd898ee8eec5f8c8e9fdc75ef2e44c6c6ff40bb1142d1096872539d04db
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957075
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA800115101
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-21T16:55:12Z
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 0xe2bd9fd898ee8eec5f8c8e9fdc75ef2e44c6c6ff40bb1142d1096872539d04db. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:55:12Z), 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/DEA800115101.
  date published: 2026-07-21T16:55:12Z
audio: Symphony No. 5 in C Minor, Op. 67: IV. Allegro
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
    value: 0.26
  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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Calm Music for Study & Concentration
type: MusicAlbum
date published: 2015-02-17
track: Peer Gynt Suite No. 1, Op. 46: I. Morning Mood
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  duration: PT4M37S
  duration ms: 277948
  explicit: false
  by artist: Up North Session Orchestra
  in album: Calm Music for Study & Concentration
    type: MusicAlbum
    date published: 2015-02-17
  isrc code: GBPS81500440
  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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    value: https://explorer.copyrightchains.com/tx/0xda11d3565df1f575ec4f89d3b2ebb0c7adedbe3de6f5e64ebbad2931bc56d7b5
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957046
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBPS81500440
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-07T14:04:01Z
  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 0xda11d3565df1f575ec4f89d3b2ebb0c7adedbe3de6f5e64ebbad2931bc56d7b5. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/GBPS81500440.
    date published: 2026-07-07T14:04:01Z
  audio: Peer Gynt Suite No. 1, Op. 46: I. Morning Mood
    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)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
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    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Liveness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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    additional property: Key Name
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    additional property: Mode Name
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track: Nocturne in B-Flat Minor, Op. 9, No. 1
  type: MusicRecording
  duration: PT5M47S
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  explicit: false
  by artist: Martin Jacoby
  in album: Calm Music for Study & Concentration
    type: MusicAlbum
    date published: 2015-02-17
  isrc code: US6R21419993
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x86dc867ae055bc96a678388c9d89664ad8bb3d1bd8e246a3e3a6ba4b61b4ff1f
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956349
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US6R21419993
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T11:34:59Z
  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 0x86dc867ae055bc96a678388c9d89664ad8bb3d1bd8e246a3e3a6ba4b61b4ff1f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US6R21419993.
    date published: 2026-07-02T11:34:59Z
  audio: Nocturne in B-Flat Minor, Op. 9, No. 1
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
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    additional property: Danceability
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    additional property: Energy
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    additional property: Speechiness
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    additional property: Acousticness
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    additional property: 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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track: Orchestral Suite No. 3 in D Major, BWV 1068: II. Air
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  duration: PT5M59S
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  explicit: false
  by artist: Up North Session Orchestra
  in album: Calm Music for Study & Concentration
    type: MusicAlbum
    date published: 2015-02-17
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  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x89a37e1227770510e05b8735af417522f3a724e63c2f702118694a7735612501
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956351
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBPS81500451
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Orchestral Suite No. 3 in D Major, BWV 1068: II. Air
track: Pavane pour une infante défunte

OTSTimestamp
type: PropertyValue
value: 2026-07-02T11:38:34Z

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 0x89a37e1227770510e05b8735af417522f3a724e63c2f702118694a7735612501. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBPS81500451.
date published: 2026-07-02T11:38:34Z

Orchestral Suite No. 3 in D Major, BWV 1068: II. Air
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: 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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Pavane pour une infante défunte
type: MusicRecording
duration: PT5M20S
duration ms: 320706
explicit: false
by artist: Capital City Symphony
in album: Calm Music for Study & Concentration
  type: MusicAlbum
  date published: 2015-02-17
isrc code: QMFMG1428414
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
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFMG1428414
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 0x9a8cfb2b811aa8e15d29ed54c32277e33b0b628fb0f1d224aaea979cddc6df84. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QMFMG1428414.
  date published: 2026-07-07T18:50:38Z
audio: Pavane pour une infante défunte
  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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Peaceful Piano for Focus and Study
type: MusicAlbum
date published: 2014-12-06
track: Nuvole Bianche
  type: MusicRecording
  duration: PT5M38S
  duration ms: 338732
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  by artist: Ludovico Einaudi
  by artist: Martin Jacoby
  in album: Peaceful Piano for Focus and Study
    type: MusicAlbum
    date published: 2014-12-06
  genre: classical
  genre: neoclassical
  isrc code: GBPS81400007
  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: OTSVerificationAPI
    type: PropertyValue
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
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    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a72ce2c4a873c982e0f2b257bdc9066e44c254b587466787263bd39b2fdbc9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBPS81400007.
    date published: 2026-07-02T03:30:09Z
  audio: Nuvole Bianche
    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: Liveness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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100 Classical Pieces for Creativity
type: MusicAlbum
date published: 2014-09-20
track: Pavane pour une infante défunte
  type: MusicRecording
  duration: PT5M20S
  duration ms: 320706
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  by artist: Maurice Ravel
  by artist: Capital City Symphony
  by artist: Carmen Dragon
  in album: 100 Classical Pieces for Creativity
    type: MusicAlbum
    date published: 2014-09-20
  genre: classical
  genre: impressionism
  genre: neoclassicism
  genre: post-romantic-era
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  additional property: CopyrightID
  additional property: CopyrightStatus
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  additional property: CopyrightRegisteredAt
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  audio: Pavane pour une infante défunte
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Classical Music to Play While You Sleep
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100 Classical Instrumental Love Songs
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Classical Romantic Piano
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Peaceful Wake up with Classical Music
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30 Classical Playlist for Babies
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Classical Music to Make You Smarter
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Relax with Mozart, Beethoven & Bach
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  subject of: OpenTimestamps Proof of Existence
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Study with the Classics
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  subject of: OpenTimestamps Proof of Existence
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track: Waltz in C-Sharp Minor, Op. 64, No. 2
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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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track: Nuvole Bianche
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OpenTimestamps Proof of Existence
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date published: 2026-07-08T03:22:41Z

Nuvole Bianche
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Classical Studying Music for Reading and Study
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    date published: 2026-07-08T03:22:41Z
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The Artistry of Dennis Brain
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    date published: 2026-07-02T11:38:34Z
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Deeply Moving Classical Music
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Bach to Sleep: Night Time Classics for Bedtime
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50 Piano Classics for Relaxation
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30 Piano Classics for Relaxation
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The Great German Composers
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Deep Relaxation - Mozart, Beethoven & Bach
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70 Relaxing Study Classics
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