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genre: czech-classical
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description: right|thumb|David Popper thumb|Hubay-Popper-Quartett in 1898 David Popper (June 18, 1843 – August 7, 1913) was a Bohemian cellist and composer. Life Popper was born in Prague, and studied music at th
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album: A Cello Recital
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  track: Chopin: Nocturne No. 2 in E-Flat Major, Op. 9 No. 2 (Arr. Popper for Cello and Piano)
  track: Schumann: Kinderszenen, Op. 15: No. 7, Träumerei (Arr. Palaschko for Cello and Piano)
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album: Casals Encores – A Cello Tribute to Pablo Casals
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album: David Popper: Works for Cello and Piano, Vol. 1
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album: Popper: Complete Cello Concertos
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album: Popper: High School of Violoncello Playing, Op. 73
album: Rostropovich Encores: A Cello Tribute to Mstislav Rostropovich
album: Play It Again - Cello Encores
album: Popper: Works for Cello & Orchestra
album: Popper: Cello Concertos 1-3
album: Popper, D.: Music for Cello and Piano
album: David Popper: 40 Estudios de la Alta Escuela del Violonchelo, Op. 73
album: David Popper, 40 Etudes, Opus 73
album: Popper: Complete Suites for Cello
album: Popper, D.: High School of Cello Playing, Op. 73
album: Popper: Romantic Cello Showpieces
album: Popper, D.: Cello Music (Romantic Cello Favorites)
album: Spinnlied, Op. 55, No. 1 (Live)
album: Vito (Spanish Dances), Op. 54, No. 5 [Live]
album: That One Time
album: Dance of the Elves (Elfentanz), Op. 39 [Live]
album: Elfentanz, Op. 39 (Dance of the Elves)
album: Steven Isserlis: The Complete RCA Recordings
album: Autumn: Classical Music for a New Season
album: Children's Cello
album: Plus d'émotions
album: David Popper: Requiem, Op. 66
album: David Popper: Chamber Works
album: Virtuoso Cello
album: Intuition
album: Dance of the Blessed Spirits
album: Essential Cello
album: 10 ans !

Hohe Schule des Violoncello-Spiels (High School of Cello Playing), Op. 73: Etude No. 2 in G Major
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Hohe Schule des Violoncello-Spiels (High School of Cello Playing), Op. 73: Etude No. 3 in B-Flat Minor
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Hohe Schule des Violoncello-Spiels (High School of Cello Playing), Op. 73: Etude No. 4 in F-Sharp Major
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    value: 0.789
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.751
  additional property: Key Name
    type: PropertyValue
    value: F#
  additional property: Mode Name
    type: PropertyValue
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Serenade (Spanish Dance), Op. 54, No. 1
type: MusicRecording
duration: PT3M19S
duration ms: 199733
explicit: false
by artist: David Popper
by artist: Peter Breiner
by artist: Maria Kliegel
by artist: Nicolaus Esterhazy Sinfonia
by artist: Gerhard Markson
in album: Popper: Romantic Cello Showpieces
  type: MusicAlbum
  date published: 2001-02-12
genre: czech-classical
genre: post-romantic-era
isrc code: HKI190016911
additional property: CopyrightID
additional property: CopyrightStatus
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  value: registered
additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190016911
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T05:09:12Z
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
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: 956304
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:55:08+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed77101f0b5b61abafc14c7969bf0be50e6f389d579a46e8d4e5b665e83907c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/HKI190016911.
  date published: 2026-07-02T05:09:12Z
audio: Serenade (Spanish Dance), Op. 54, No. 1
  type: AudioObject
  additional property: Tempo (BPM)
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Im Walde, Op. 50 (arr. P. Breiner for orchestra): III. Andacht (Devotion)
type: MusicRecording
duration: PT4M56S
duration ms: 296640
explicit: false
by artist: David Popper
by artist: Peter Breiner
by artist: Maria Kliegel
by artist: Nicolaus Esterhazy Sinfonia
by artist: Gerhard Markson
in album: Popper: Romantic Cello Showpieces
  type: MusicAlbum
  date published: 2001-02-12
genre: czech-classical
genre: post-romantic-era
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623ffa4301380144c9cba51f050449e4627f0ca4526ff50f8e1b845218c3b05e. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/HKI190016903.
  date published: 2026-07-22T17:48:40Z
audio: Im Walde, Op. 50 (arr. P. Breiner for orchestra): III. Andacht (Devotion)
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  additional property: Musical Key
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    value: 3
  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: 0.092
  additional property: Energy
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    value: 0.036
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
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    value: 0.956
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.926
  additional property: Liveness
    type: PropertyValue
    value: 0.099
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.038
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.81
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: HKI190016903
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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additional property: OTSVerificationAPI
  type: PropertyValue
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Once Upon More Beautiful Days (In Memory of My Parents)
type: MusicRecording
duration: PT3M40S
duration ms: 220000
explicit: false
by artist: David Popper
by artist: János Starker
by artist: Shigeo Neriki
in album: Popper, D.: Cello Music (Romantic Cello Favorites)
  type: MusicAlbum
  date published: 1989-01-01
genre: czech-classical
genre: post-romantic-era
isrc code: USASX0506501
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 956312
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956312
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USASX0506501
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T05:09:12Z
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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c84853f04a71ff00b04d18e2deabf92577ca4669c6132e2d06c08ac95f80b5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USASX0506501.
  date published: 2026-07-02T05:09:12Z
audio: Once Upon More Beautiful Days (In Memory of My Parents)
  type: AudioObject
  additional property: Tempo (BPM)
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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
    type: PropertyValue
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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  additional property: Key Name
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  additional property: Mode Name
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Gavotte No. 2 in D Major, Op. 23
type: MusicRecording
duration: PT4M21S
duration ms: 261000
explicit: false
by artist: David Popper
by artist: János Starker
by artist: Shigeo Neriki
in album: Popper, D.: Cello Music (Romantic Cello Favorites)
  type: MusicAlbum
  date published: 1989-01-01
genre: czech-classical
genre: post-romantic-era
isrc code: USASX0506512
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-27T06:52:21+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xba5cb90e9f516018204b43c4f99556d434afa4124b87f185c362fbd123753379
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 956351
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/USASX0506512
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T11:38:34Z
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 956304
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:55:08+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5cb90e9f516018204b43c4f99556d434afa4124b87f185c362fbd123753379. 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/USASX0506512.
  date published: 2026-07-02T11:38:34Z
audio: Gavotte No. 2 in D Major, Op. 23
  type: AudioObject
  additional property: Tempo (BPM)
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  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
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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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    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.48
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.232
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  additional property: Mode Name
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Elfentanz, Op. 39 - Dance of the Elves
type: MusicRecording
duration: PT2M32S
duration ms: 152581
explicit: false
by artist: David Popper
by artist: Metamorphose String Orchestra
by artist: Pavel Lyubomudrov
by artist: Mikael Samsonov
in album: Elfentanz, Op. 39 (Dance of the Elves)
  type: MusicAlbum
  date published: 2018-01-26
genre: czech-classical
genre: post-romantic-era
isrc code: ITD541800338
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-04T15:38:10+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3fe5eabe0c212d3be31422e5a29ca9f2bf94c1de7d26341c5302181cfc51918f
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 953513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953513
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITD541800338
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:47:07Z
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
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additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 953513
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-06-13T12:47:07+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe5eabe0c212d3be31422e5a29ca9f2bf94c1de7d26341c5302181cfc51918f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITD541800338.
  date published: 2026-06-13T12:47:07Z
audio: Elfentanz, Op. 39 - Dance of the Elves
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
    value: 0.853
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.892
  additional property: Liveness
    type: PropertyValue
    value: 0.325
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.499
  additional property: Loudness (dB)
    type: PropertyValue
    value: -17.323
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

David Popper: Requiem, Op. 66
type: MusicRecording
duration: PT8M27S
duration ms: 507961
explicit: false
by artist: David Popper
by artist: Raïff Dantas Barreto
by artist: Mauro Brucoli
by artist: Moisés Ferreira
by artist: Talita Gondim
in album: David Popper: Requiem, Op. 66
  type: MusicAlbum
  date published: 2020-11-13
genre: czech-classical
genre: post-romantic-era
isrc code: BRARP2000155
additional property: CopyrightID
additional property: CopyrightStatus
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  value: registered
additional property: CopyrightRegisteredAt
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  value: 2026-06-26T04:16:45+00:00
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRARP2000155
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
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
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additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 956304
additional property: BitcoinTime
  type: PropertyValue
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9c68f593ea78571cd21b6643b06805dcf47e0c0d67c2fce8888535f9c51eaf. 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/BRARP2000155.
  date published: 2026-07-02T03:55:08Z
audio: David Popper: Requiem, Op. 66
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
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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: 0.971
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.915
  additional property: Liveness
    type: PropertyValue
    value: 0.102
  additional property: Valence (Positivity)
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    value: 0.04
  additional property: Loudness (dB)
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    value: -23.111
  additional property: Key Name
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  additional property: Mode Name
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Popper: Hungarian Rhapsody, Op. 68 (Arr. Berthollet for Cello and Piano)
type: MusicRecording
duration: PT7M35S
duration ms: 455146
explicit: false
by artist: David Popper
by artist: Camille Berthollet
by artist: Vincent Forestier
in album: 10 ans !
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  date published: 2024-11-15
genre: czech-classical
genre: post-romantic-era
isrc code: GBAYC2301862
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC2301862
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T11:38:34Z
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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Chopin: Nocturne No. 2 in E-Flat Major, Op. 9 No. 2 (Arr. Popper for Cello and Piano)
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Schumann: Kinderszenen, Op. 15: No. 7, Träumerei (Arr. Palaschko for Cello and Piano)
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Chopin: Nocturne No. 20 in C-Sharp Minor, Op. Posth. (Arr. Piatigorsky for Cello and Piano)
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  date published: 2026-07-08T03:53:27Z
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Saint-Saëns: Le carnaval des animaux: XIII. Le cygne
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Handel: L'Allegro, il Penseroso ed il Moderato, HWV 55: Aria. "Let Me Wander Not Unseen" (Arr. Weiner for Cello and Piano)
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Cello Favourites
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track: Le Carnival des Animaux: Le Cygne (The Swan)
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Casals Encores – A Cello Tribute to Pablo Casals
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Rostropovich Encores: A Cello Tribute to Mstislav Rostropovich
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date published: 2026-07-08T03:22:41Z

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    date published: 2026-07-08T03:53:27Z
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    date published: 2026-07-08T03:53:27Z
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date published: 2026-07-08T08:56:20Z

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additional property: Mode Name
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Hohe Schule des Violoncello-Spiels (High School of Cello Playing), Op. 73: Etude No. 15 in G Major
type: MusicRecording
duration: PT2M14S
duration ms: 134013
explicit: false
by artist: David Popper
by artist: Dmitry Yablonsky
in album: Popper, D.: High School of Cello Playing, Op. 73
  type: MusicAlbum
  date published: 2009-01-27
genre: czech-classical
genre: post-romantic-era
isrc code: HKI190834215
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
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/HKI190834215
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:53:27Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9ac90870c08d09106d2e442d99094ab4992c32f5974f7f08ef6fe34320b02b. 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/HKI190834215.
  date published: 2026-07-08T03:53:27Z
audio: Hohe Schule des Violoncello-Spiels (High School of Cello Playing), Op. 73: Etude No. 15 in G Major
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  additional property: Valence (Positivity)
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Popper: Romantic Cello Showpieces
type: MusicAlbum
date published: 2001-02-12
track: Gavotte, Op. 67, No. 2
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  duration: PT2M21S
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  explicit: false
  by artist: David Popper
  by artist: Peter Breiner
  by artist: Maria Kliegel
  by artist: Nicolaus Esterhazy Sinfonia
  by artist: Gerhard Markson
  in album: Popper: Romantic Cello Showpieces
    type: MusicAlbum
    date published: 2001-02-12
  genre: czech-classical
  genre: post-romantic-era
  isrc code: HKI190016908
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957120
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190016908
  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 0xf2f5643989e2111f3640cf8b040c79f54492edc00269597a5a42f9b79c3c78cb. 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/HKI190016908.
    date published: 2026-07-08T03:22:41Z
  audio: Gavotte, Op. 67, No. 2
    type: AudioObject
    additional property: Tempo (BPM)
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      value: 101.605
    additional property: Musical Key
      type: PropertyValue
      value: 5
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    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
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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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track: Serenade (Spanish Dance), Op. 54, No. 1
track: Im Walde, Op. 50 (arr. P. Breiner for orchestra): III. Andacht (Devotion)

Popper, D.: Cello Music (Romantic Cello Favorites)
type: MusicAlbum
date published: 1989-01-01
track: Once Upon More Beautiful Days (In Memory of My Parents)
track: Gavotte No. 2 in D Minor, Op. 10
  type: MusicRecording
  duration: PT2M9S
  duration ms: 129000
  explicit: false
  by artist: David Popper
  by artist: János Starker
  by artist: Shigeo Neriki
  in album: Popper, D.: Cello Music (Romantic Cello Favorites)
    type: MusicAlbum
    date published: 1989-01-01
  genre: czech-classical
  genre: post-romantic-era
  isrc code: USASX0506502
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957124
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USASX0506502
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:53:27Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b27e97d029fa8629b0715960af30fa77f17a7f0c3dc4911c234cead10d5b1f8. 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/USASX0506502.
    date published: 2026-07-08T03:53:27Z
  audio: Gavotte No. 2 in D Minor, Op. 10
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
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    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
      type: PropertyValue
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
      type: PropertyValue
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    additional property: Instrumentalness
      type: PropertyValue
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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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      value: D
    additional property: Mode Name
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track: Begegnung
  type: MusicRecording
  duration: PT2M11S
  duration ms: 131000
  explicit: false
  by artist: David Popper
  by artist: János Starker
  by artist: Shigeo Neriki
  in album: Popper, D.: Cello Music (Romantic Cello Favorites)
    type: MusicAlbum
    date published: 1989-01-01
  genre: czech-classical
  genre: post-romantic-era
  isrc code: USASX0506506
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
    type: PropertyValue
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  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957124
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USASX0506506
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:53:27Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d6acb4e62f3d716531659370bde138688c9ea0155893e7e17485b1d67972ab. 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/USASX0506506.
    date published: 2026-07-08T03:53:27Z
  audio: Begegnung
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
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    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
      type: PropertyValue
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    additional property: Instrumentalness
      type: PropertyValue
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    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.047
    additional property: Loudness (dB)
      type: PropertyValue
      value: -32.513
    additional property: Key Name
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    additional property: Mode Name
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track: Nocturne, Op. 42
  type: MusicRecording
  duration: PT4M46S
  duration ms: 286000
  explicit: false
  by artist: David Popper
  by artist: János Starker
  by artist: Shigeo Neriki
  in album: Popper, D.: Cello Music (Romantic Cello Favorites)
    type: MusicAlbum
    date published: 1989-01-01
  genre: czech-classical
  genre: post-romantic-era
  isrc code: USASX0506511
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightRegisteredAt
    type: PropertyValue
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  additional property: CopyrightChainExplorerURL
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Nocturne, Op. 42
track: Gavotte No. 2 in D Major, Op. 23
track: Spinning Song, Op. 55, No. 1
track: Feuillet d'album
track: Menuetto, Op. 65, No. 2
track: Tarantella, Op. 33

CopyrightChainExplorerURL
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value: https://explorer.copyrightchains.com/tx/0x145b344bf324b958201e088d4fb5fd85c5d1392a8110ac3af9ef5d4e71a6e1c3

OTSHash
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OTSBitcoinBlock
type: PropertyValue
value: 957145

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/957145

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USASX0506511

OTSTimestamp
type: PropertyValue
value: 2026-07-08T08:56:20Z

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 0x145b344bf324b958201e088d4fb5fd85c5d1392a8110ac3af9ef5d4e71a6e1c3. 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/USASX0506511.
date published: 2026-07-08T08:56:20Z

Nocturne, Op. 42
type: AudioObject
additional property: Tempo (BPM)
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additional property: Musical Key
  type: PropertyValue
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additional property: Mode (Major/Minor)
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additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.136
additional property: Energy
  type: PropertyValue
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additional property: Speechiness
  type: PropertyValue
  value: 0.049
additional property: Acousticness
  type: PropertyValue
  value: 0.993
additional property: Instrumentalness
  type: PropertyValue
  value: 0.934
additional property: Liveness
  type: PropertyValue
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additional property: Valence (Positivity)
  type: PropertyValue
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additional property: Loudness (dB)
  type: PropertyValue
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additional property: Key Name
  type: PropertyValue
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additional property: Mode Name
  type: PropertyValue
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Spinning Song, Op. 55, No. 1
type: MusicRecording
duration: PT2M27S
duration ms: 147000
explicit: false
by artist: David Popper
by artist: János Starker
by artist: Shigeo Neriki
in album: Popper, D.: Cello Music (Romantic Cello Favorites)
  type: MusicAlbum
  date published: 1989-01-01
genre: czech-classical
genre: post-romantic-era
isrc code: USASX0506517
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
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/USASX0506517
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 0xfa7a29ecfe3bca59f2db40c7e35d671b5e4939c33e1125266489dd7f4e5517db. 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/USASX0506517.
  date published: 2026-07-08T03:20:19Z
audio: Spinning Song, Op. 55, No. 1
  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
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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: 0.985
  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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  additional property: Loudness (dB)
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  additional property: Key Name
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Feuillet d'album
type: MusicRecording
duration: PT4M6S
duration ms: 246000
explicit: false
by artist: David Popper
by artist: János Starker
by artist: Shigeo Neriki
in album: Popper, D.: Cello Music (Romantic Cello Favorites)
  type: MusicAlbum
  date published: 1989-01-01
genre: czech-classical
genre: post-romantic-era
isrc code: USASX0506518
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957124
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USASX0506518
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:53:27Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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Menuetto, Op. 65, No. 2
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Tarantella, Op. 33
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subject of: OpenTimestamps Proof of Existence
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Spinnlied, Op. 55, No. 1 (Live)
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Vito (Spanish Dances), Op. 54, No. 5 [Live]
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That One Time
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    date published: 2026-07-08T08:56:20Z
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OpenTimestamps Proof of Existence
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date published: 2026-07-08T03:39:04Z

Tarantella, Op. 33 - Live
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Dance of the Elves (Elfentanz), Op. 39 [Live]
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Elfentanz, Op. 39 (Dance of the Elves)
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date published: 2018-01-26
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Steven Isserlis: The Complete RCA Recordings
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OpenTimestamps Proof of Existence
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date published: 2026-07-08T03:53:27Z

Song Without Words for Cello and Piano in D Major, Op. 109
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Autumn: Classical Music for a New Season
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track: 5 Short Pieces: No. 5, A Sunday Evening in Autumn
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OpenTimestamps Proof of Existence
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  value: https://explorer.copyrightchains.com/tx/0x8f5bbebe0be76d8fbdc54d27704f45046a1b10761cb38de423384bc235404669
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956349
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/SEAEP0662100
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 0x8f5bbebe0be76d8fbdc54d27704f45046a1b10761cb38de423384bc235404669. 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/SEAEP0662100.
  date published: 2026-07-02T11:34:59Z
audio: Danse rustique
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 116.858
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.342
  additional property: Energy
    type: PropertyValue
    value: 0.053
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.993
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.915
  additional property: Liveness
    type: PropertyValue
    value: 0.085
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.536
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.706
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Melody
type: MusicRecording
duration: PT2M46S
duration ms: 166053
explicit: false
by artist: George Dyson
by artist: Steven Isserlis
by artist: Stephen Hough
in album: Children's Cello
  type: MusicAlbum
  date published: 2006-04-01
genre: british-modern-classical
genre: anglican-liturgy
isrc code: SEAEP0662150
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T01:59:27+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x62daf1b44ec97438512a766273a821c1805b505be0ac4a98d82b398086eef03c
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/SEAEP0662150
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 0x62daf1b44ec97438512a766273a821c1805b505be0ac4a98d82b398086eef03c. 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/SEAEP0662150.
  date published: 2026-07-08T03:22:41Z
audio: Melody
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 108.885
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.16
  additional property: Energy
    type: PropertyValue
    value: 0.004
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.989
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.886
  additional property: Liveness
    type: PropertyValue
    value: 0.078
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.106
  additional property: Loudness (dB)
    type: PropertyValue
    value: -36.922
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
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3 Compositions, Op. 40: Berceuse (Version for cello and piano)
type: MusicRecording
duration: PT3M15S
duration ms: 195173
explicit: false
by artist: Amy Beach
by artist: Steven Isserlis
by artist: Stephen Hough
in album: Children's Cello
  type: MusicAlbum
  date published: 2006-04-01
isrc code: SEAEP0662170
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-21T03:55:05+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe080015db73b9955b20e7b4ca00c59c9a6dcbb5e9a1511c8a807346cf02ae89d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAEP0662170
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
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 0xe080015db73b9955b20e7b4ca00c59c9a6dcbb5e9a1511c8a807346cf02ae89d. 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/SEAEP0662170.
  date published: 2026-07-02T03:55:08Z
audio: 3 Compositions, Op. 40: Berceuse (Version for cello and piano)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 99.154
  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: 0.153
  additional property: Energy
    type: PropertyValue
    value: 0.011
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.985
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.694
  additional property: Liveness
    type: PropertyValue
    value: 0.058
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.134
  additional property: Loudness (dB)
    type: PropertyValue
    value: -35.193
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Chansons gaillardes: No. 8, Serenade (Arr. M. Gendron)
type: MusicRecording
duration: PT2M2S
duration ms: 122720
explicit: false
by artist: Francis Poulenc
by artist: Steven Isserlis
by artist: Stephen Hough
in album: Children's Cello
  type: MusicAlbum
  date published: 2006-04-01
genre: classical
genre: early-modern-classical
genre: neoclassicism
isrc code: SEAEP0662200
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T00:43:03+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x566063240dd25521e5264c7b8c66b91ee12ead3b75f1af13c6f6c829ed1f24b6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956857
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956857
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAEP0662200
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T01:26:17Z
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 0x566063240dd25521e5264c7b8c66b91ee12ead3b75f1af13c6f6c829ed1f24b6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SEAEP0662200.
  date published: 2026-07-06T01:26:17Z
audio: Chansons gaillardes: No. 8, Serenade (Arr. M. Gendron)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 85.104
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.168
  additional property: Energy
    type: PropertyValue
    value: 0.024
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.992
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.945
  additional property: Liveness
    type: PropertyValue
    value: 0.088
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.067
  additional property: Loudness (dB)
    type: PropertyValue
    value: -28.671
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Berceuse (Arr. For cello and piano)
type: MusicRecording
duration: PT3M52S
duration ms: 232693
explicit: false
by artist: Gabriel Fauré
by artist: Steven Isserlis
by artist: Stephen Hough
in album: Children's Cello
  type: MusicAlbum
  date published: 2006-04-01
isrc code: SEAEP0662220
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T08:24:05+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x57ca7a52e1fafab5185f4cfd066b23a93050e69fddffff1f546aec5e9337abd2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957124
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957124
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAEP0662220
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:53:27Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ca7a52e1fafab5185f4cfd066b23a93050e69fddffff1f546aec5e9337abd2. 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/SEAEP0662220.
  date published: 2026-07-08T03:53:27Z
audio: Berceuse (Arr. For cello and piano)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 90.878
  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: 0.062
  additional property: Energy
    type: PropertyValue
    value: 0.007
  additional property: Speechiness
    type: PropertyValue
    value: 0.058
  additional property: Acousticness
    type: PropertyValue
    value: 0.978
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.923
  additional property: Liveness
    type: PropertyValue
    value: 0.066
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.067
  additional property: Loudness (dB)
    type: PropertyValue
    value: -38.951
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
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Archangel's Lullaby
type: MusicRecording
duration: PT1M39S
duration ms: 99733
explicit: false
by artist: Howard Blake
by artist: Steven Isserlis
by artist: Stephen Hough
in album: Children's Cello
  type: MusicAlbum
  date published: 2006-04-01
genre: british-soundtrack
genre: classic-soundtrack
isrc code: SEAEP0662260
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-05T06:33:35+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0df992414c9b8cb44773ffa62752cd4576e462c09cc59e61eeeca769b4d84cba
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953528
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953528
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAEP0662260
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
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 0x0df992414c9b8cb44773ffa62752cd4576e462c09cc59e61eeeca769b4d84cba. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SEAEP0662260.
  date published: 2026-06-13T15:41:10Z
audio: Archangel's Lullaby
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 111.382
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.105
  additional property: Energy
    type: PropertyValue
    value: 0.012
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.986
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.938
  additional property: Liveness
    type: PropertyValue
    value: 0.098
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.063
  additional property: Loudness (dB)
    type: PropertyValue
    value: -37.066
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Angelic Dance
type: MusicRecording
duration: PT1M33S
duration ms: 93346
explicit: false
by artist: Stephen Hough
by artist: Steven Isserlis
in album: Children's Cello
  type: MusicAlbum
  date published: 2006-04-01
isrc code: SEAEP0662290
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T23:39:18+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x38c8d1a28408b7063b2841c0d332d3be4e03b6f7dc0ca809ca7202a4462a3a4f
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/SEAEP0662290
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 0x38c8d1a28408b7063b2841c0d332d3be4e03b6f7dc0ca809ca7202a4462a3a4f. 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/SEAEP0662290.
  date published: 2026-07-08T03:22:41Z
audio: Angelic Dance
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 143.652
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.429
  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
    value: 0.035
  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
    value: 0.951
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.592
  additional property: Loudness (dB)
    type: PropertyValue
    value: -32.718
  additional property: Key Name
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  additional property: Mode Name
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Plus d'émotions
type: MusicAlbum
date published: 2021-07-02
track: Christophe / Transcr. Capuçon, G & Ducros: Les Mots bleus
  type: MusicRecording
  duration: PT3M18S
  duration ms: 198253
  explicit: false
  by artist: Christophe
  by artist: Gautier Capuçon
  by artist: Jerome Ducros
  in album: Plus d'émotions
    type: MusicAlbum
    date published: 2021-07-02
  isrc code: GBAYC2002207
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T20:08:35+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xd0534cb6caa87216e589c8701175f2e418159368318f45ff28d347d539ad71ae
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957120
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957120
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track: Pärt: Fratres for Cello, String Orchestra and Percussion
track: Prokoviev: Music for Children, Op. 65: No. 10, March

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Popper: Hungarian Rhapsody, Op. 68
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Virtuoso Cello
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track: Sollima: Violoncelles, Vibrez!
track: Dvorák: Lasst mich allein (From 4 Lieder, Op. 82, B. 157)
track: Elgar / Orch. Walter: Salut d'amour, Op. 12
track: Casals: El cant dels ocells
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Sollima: Violoncelles, Vibrez!
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Dvorák: Lasst mich allein (From 4 Lieder, Op. 82, B. 157)
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Elgar / Orch. Walter: Salut d'amour, Op. 12
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Casals: El cant dels ocells
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Paganini / Transc. Fournier: Variations on One String on a Theme from Rossini's "Mosè in Egitto" (Transc. Fournier)
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Tchaikovsky: Andante cantabile (From String Quartet No. 1 in D Major, Op. 11)
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Rachmaninov / Transc. Leon: 14 Romances, Op. 34: No. 14, Vocalise
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Joplin: Original Rags (Arr. Förster for Cello and Piano)
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Dvořák: From the Bohemian Forest, Op. 68, B. 133: V. Silent Woods
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Fauré / Orch. Büsser: 3 Mélodies, Op. 7: No. 1, Après un rêve
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Piazzolla: Le Grand Tango
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Dance of the Blessed Spirits
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Gluck: Orfeo ed Euridice, Wq. 30, Act 2: Dance of the Blessed Spirits
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Vivaldi: The Four Seasons, Violin Concerto in G Minor, Op. 8 No. 2, RV 315 "Summer": III. Presto
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subject of: OpenTimestamps Proof of Existence
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Popper: Dance of the Elves, Op. 39
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subject of: OpenTimestamps Proof of Existence
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Barrios Mangoré: La catedral: III. Allegro solemne
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Falla: The Three-Cornered Hat, Pt. 2: The Miller's Dance
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Falla: The Three-Cornered Hat, Pt. 2: Dance of the Neighbours
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Gluck: Melodie from Orfeo ed Euridice
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Handel / Orch. Hale: Keyboard Suite No. 4 in D Minor, HWV 437: III. Sarabande
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Kreisler: 3 Alt-Wiener Tanzweisen: No. 2, Liebesleid
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Piazzolla: Oblivion (Orch. Zimmerman)
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Grieg: Suite No. 1 from Peer Gynt, Op. 46: III. Anitra's Dance
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Prokofiev: 10 Pieces from Romeo & Juliet, Op. 75: No. 6, Montagues and Capulets
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Debussy: Rêverie, CD 76, L. 68
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Chopin: Nocturne No. 20 in C-Sharp Minor, Op. Posth.
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Grieg: Suite No. 1 from Peer Gynt, Op. 46: I. Morning Mood
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Grieg: Suite No. 1 from Peer Gynt, Op. 46: I. Morning Mood
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Piazzolla: Libertango (Arr. Milone for Trumpet and Orchestra)
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by artist: Alison Balsom
by artist: Edward Gardner
by artist: Göteborg Symfoniker
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Piazzolla: Libertango (Arr. Milone for Trumpet and Orchestra)
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Bernstein: Symphonic Dances from West Side Story: No. 2, Somewhere
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by artist: Paavo Järvi
by artist: City Of Birmingham Symphony Orchestra
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Bernstein: Symphonic Dances from West Side Story: No. 2, Somewhere
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Kreisler / Arr. Rachmaninov: 3 Alt-Wiener Tanzweisen: No. 2, Liebesleid
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Kreisler / Arr. Rachmaninov: 3 Alt-Wiener Tanzweisen: No. 2, Liebesleid
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Liszt: Grandes études de Paganini, S. 141: No. 3, La campanella
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Liszt: Grandes études de Paganini, S. 141: No. 3, La campanella
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Chopin: Prelude in C-Sharp Minor, Op. 45
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Chopin: Prelude in C-Sharp Minor, Op. 45
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Pachelbel: Canon and Gigue in D Major: Canon
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  date published: 2026-07-08T03:22:41Z
audio: Pachelbel: Canon and Gigue in D Major: Canon
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Debussy: Suite bergamasque, CD 82, L. 75: III. Clair de lune
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subject of: OpenTimestamps Proof of Existence
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audio: Debussy: Suite bergamasque, CD 82, L. 75: III. Clair de lune
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Prokofiev: Romeo and Juliet, Op. 64, Act 1: Dance of the Knights
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Grieg: 4 Symphonic Dances, Op. 64: No. 2, Allegretto grazioso
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Mozart: Clarinet Concerto in A Major, K. 622: II. Adagio
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Beethoven: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": I. Adagio sostenuto
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Dvořák: 8 Slavonic Dances, Op. 72, B. 147: No. 10 in E Minor
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Tchaikovsky: The Nutcracker, Op. 71, Act 2: No. 13, Waltz of the Flowers
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Essential Cello
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track: Elgar: Cello Concerto in E Minor, Op. 85: I. Adagio - Moderato
track: Haydn: Cello Concerto No. 1 in C Major, Hob. VIIb:1: I. Moderato (Cadenza by Britten)
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track: Beethoven: Cello Sonata No. 5 in D Major, Op. 102 No. 2: I. Allegro con brio
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track: Paganini / Arr. Tortelier: Sonata a preghiera, MS 23 "Mosè Fantasia"
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track: Saint-Saëns: Le carnaval des animaux, R 125: XIII. Le cygne

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date published: 2026-07-08T03:20:19Z

Bach, JS: Cello Suite No. 1 in G Major, BWV 1007: II. Allemande
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Elgar: Cello Concerto in E Minor, Op. 85: I. Adagio - Moderato
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  date published: 2026-07-08T03:53:27Z
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Haydn: Cello Concerto No. 1 in C Major, Hob. VIIb:1: I. Moderato (Cadenza by Britten)
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Boccherini: Cello Concerto No. 7 in G Major, G. 480: III. Allegro
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Beethoven: Cello Sonata No. 5 in D Major, Op. 102 No. 2: I. Allegro con brio
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Piazzolla: Adiós Nonino (Arr. Medaglia & Hammon)
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Schumann: Cello Concerto in A Minor, Op. 129: III. Sehr lebhaft
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Piazzolla: Oblivion
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Chopin: Prelude No. 4 in E Minor, Op. 28 No. 4 (Arr. for cello)
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Paganini / Arr. Tortelier: Sonata a preghiera, MS 23 "Mosè Fantasia"
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Shostakovich: Cello Concerto No. 1 in E-Flat Major, Op. 107: I. Allegretto
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Dvořák: Cello Concerto in B Minor, Op. 104, B. 191: I. Allegro
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Saint-Saëns: Cello Concerto No. 1 in A Minor, Op. 33: I. Allegro non troppo
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10 ans !
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track: Game of Thrones (Medley)
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date published: 2026-07-02T05:09:12Z

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Gounod: Ave Maria (After Bach's Prelude, BWV 846) [Arr. Berthollet for Piano Trio]
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by artist: Johann Sebastian Bach
by artist: Julie Berthollet
by artist: Camille Berthollet
by artist: Vincent Forestier
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T05:09:12Z
audio: Gounod: Ave Maria (After Bach's Prelude, BWV 846) [Arr. Berthollet for Piano Trio]
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Rimsky-Korsakov: The Tale of Tsar Saltan, Act 3: The Flight of the Bumblebee (Orch. Sándor)
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duration: PT1M17S
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by artist: Nikolai Rimsky-Korsakov
by artist: Julie Berthollet
by artist: Julien Masmondet
by artist: Orchestre Philharmonique de Monte-Carlo
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genre: classical
genre: late-romantic-era
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:34:59Z
audio: Rimsky-Korsakov: The Tale of Tsar Saltan, Act 3: The Flight of the Bumblebee (Orch. Sándor)
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Dinicu: Ciocârlia (Transcr. Lehn)
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by artist: Julie Berthollet
by artist: Grégoire Dubruel
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T05:09:12Z
audio: Dinicu: Ciocârlia (Transcr. Lehn)
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Paganini: Violin Concerto No. 2 in B Minor, Op. 7: III. Rondo "La campanella" (Arr. Kreisler for Violin and Piano)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T05:09:12Z
audio: Paganini: Violin Concerto No. 2 in B Minor, Op. 7: III. Rondo "La campanella" (Arr. Kreisler for Violin and Piano)
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Vivaldi: The Four Seasons, Violin Concerto in G Minor, Op. 8 No. 2, RV 315 "Summer": III. Presto
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Vivaldi: The Four Seasons, Violin Concerto in G Minor, Op. 8 No. 2, RV 315 "Summer": III. Presto
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Regard d'été
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T05:09:12Z
audio: Regard d'été
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Delibes: Lakmé, Act 1: Duo des fleurs (Instrumental Version)
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subject of: OpenTimestamps Proof of Existence
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Vivaldi: The Four Seasons, Violin Concerto in E Major, Op. 8 No. 1, RV 269 "Spring": I. Allegro
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Générique
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Chopin: Nocturne No. 20 in C-Sharp Minor, Op. Posth. (Arr. Berthollet for Violin and Piano)
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La valse des noces (Arr. Samuel Pegg d'après Le Beau Danube bleu, Op. 314 de Johann Strauss II)
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Joplin: The Entertainer (Arr. Berthollet for 2 Violins and Piano)
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Schubert: Piano Trio No. 2 in E-Flat Major, Op. 100, D. 929: II. Andante con moto
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Kreisler: 3 Old Viennese Dances: No. 2, Liebesleid
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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 0x514c04421668d08e3ef81ffb0420142ddb709539f4aded66497eb34dde19bb7a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBAYC1702551.
  date published: 2026-07-06T07:16:32Z
audio: Kreisler: 3 Old Viennese Dances: No. 2, Liebesleid
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.332
  additional property: Energy
    type: PropertyValue
    value: 0.152
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
    type: PropertyValue
    value: 0.99
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.543
  additional property: Liveness
    type: PropertyValue
    value: 0.346
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.176
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.372
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Brahms: 21 Hungarian Dances, WoO 1: No. 5 in F-Sharp Minor (Orch. Bouchard)
type: MusicRecording
duration: PT2M52S
duration ms: 172106
explicit: false
by artist: Johannes Brahms
by artist: Camille Berthollet
by artist: Julie Berthollet
by artist: Julien Masmondet
by artist: Orchestre Philharmonique de Monte-Carlo
in album: 10 ans !
  type: MusicAlbum
  date published: 2024-11-15
genre: classical
genre: german-romanticism
genre: late-romantic-era
isrc code: GBAYC1601535
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-17T21:55:47+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1f6cb761ef8be8d6e395b71c679a121f5d8e09cbd400fb1b4a1e812123d511f5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956891
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956891
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1601535
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T07:16:32Z
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 0x1f6cb761ef8be8d6e395b71c679a121f5d8e09cbd400fb1b4a1e812123d511f5. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBAYC1601535.
  date published: 2026-07-06T07:16:32Z
audio: Brahms: 21 Hungarian Dances, WoO 1: No. 5 in F-Sharp Minor (Orch. Bouchard)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 163.665
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.288
  additional property: Energy
    type: PropertyValue
    value: 0.196
  additional property: Speechiness
    type: PropertyValue
    value: 0.057
  additional property: Acousticness
    type: PropertyValue
    value: 0.883
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.765
  additional property: Liveness
    type: PropertyValue
    value: 0.088
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.236
  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.833
  additional property: Key Name
    type: PropertyValue
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  additional property: Mode Name
    type: PropertyValue
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Gardel: Por una cabeza
type: MusicRecording
duration: PT2M26S
duration ms: 146920
explicit: false
by artist: Carlos Gardel
by artist: Camille Berthollet
by artist: Julie Berthollet
by artist: Guillaume Vincent
in album: 10 ans !
  type: MusicAlbum
  date published: 2024-11-15
genre: tango
genre: bolero
genre: candombe
isrc code: GBAYC1502810
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-21T21:01:16+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1f3c4ae10d8ffc37a35cb247794e536155acc55a3030e7c49d55ec45eb8d0e3e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957061
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957061
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1502810
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T16:07:00Z
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 0x1f3c4ae10d8ffc37a35cb247794e536155acc55a3030e7c49d55ec45eb8d0e3e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GBAYC1502810.
  date published: 2026-07-07T16:07:00Z
audio: Gardel: Por una cabeza
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 90.694
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.194
  additional property: Energy
    type: PropertyValue
    value: 0.182
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
    type: PropertyValue
    value: 0.965
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.011
  additional property: Liveness
    type: PropertyValue
    value: 0.137
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.201
  additional property: Loudness (dB)
    type: PropertyValue
    value: -17.401
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
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Tchaikovsky: Pezzo capriccioso, Op. 62
type: MusicRecording
duration: PT7M10S
duration ms: 430360
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Camille Berthollet
by artist: Julien Masmondet
by artist: Orchestre Philharmonique de Monte-Carlo
in album: 10 ans !
  type: MusicAlbum
  date published: 2024-11-15
isrc code: GBAYC1601568
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-22T03:53:34+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb3568fdc5d4987de811d267a7d493e970f8a3af2d72bf9837a32262ab2c45fe0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957075
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/GBAYC1601568
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T18:50:38Z
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 0xb3568fdc5d4987de811d267a7d493e970f8a3af2d72bf9837a32262ab2c45fe0. 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/GBAYC1601568.
  date published: 2026-07-07T18:50:38Z
audio: Tchaikovsky: Pezzo capriccioso, Op. 62
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 119.219
  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: 0.245
  additional property: Energy
    type: PropertyValue
    value: 0.143
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.97
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.909
  additional property: Liveness
    type: PropertyValue
    value: 0.095
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.19
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.972
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Schubert: Schwanengesang, D. 957: No. 4, Ständchen (Version for Violin and Piano)
type: MusicRecording
duration: PT4M36S
duration ms: 276120
explicit: false
by artist: Franz Schubert
by artist: Julie Berthollet
by artist: Guillaume Vincent
in album: 10 ans !
  type: MusicAlbum
  date published: 2024-11-15
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: GBAYC1601565
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-18T14:03:43+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x46b566c5d8ecc530a14c3c2213a12aff393c42de13ee68a846c8cee759267962
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/GBAYC1601565
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b566c5d8ecc530a14c3c2213a12aff393c42de13ee68a846c8cee759267962. 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/GBAYC1601565.
  date published: 2026-07-08T03:20:19Z
audio: Schubert: Schwanengesang, D. 957: No. 4, Ständchen (Version for Violin and Piano)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 113.384
  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: 0.239
  additional property: Energy
    type: PropertyValue
    value: 0.087
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
    type: PropertyValue
    value: 0.98
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.123
  additional property: Liveness
    type: PropertyValue
    value: 0.08
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.038
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.926
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Envol
type: MusicRecording
duration: PT3M16S
duration ms: 196800
explicit: false
by artist: Julie Berthollet
by artist: Camille Berthollet
in album: 10 ans !
  type: MusicAlbum
  date published: 2024-11-15
isrc code: GBAYC1900188
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T06:56:17+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x108a51c4664a4335b93ca0c88140ad8230a91cc76cb98d02c934bc033259ed94
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957073
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957073
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1900188
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-21T16:25:41Z
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 0x108a51c4664a4335b93ca0c88140ad8230a91cc76cb98d02c934bc033259ed94. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T16:25:41Z), 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/GBAYC1900188.
  date published: 2026-07-21T16:25:41Z
audio: Envol
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 127.535
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.569
  additional property: Energy
    type: PropertyValue
    value: 0.079
  additional property: Speechiness
    type: PropertyValue
    value: 0.051
  additional property: Acousticness
    type: PropertyValue
    value: 0.952
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.096
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.228
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.697
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Je m'voyais déjà
type: MusicRecording
duration: PT2M18S
duration ms: 138160
explicit: false
by artist: Charles Aznavour
by artist: Camille Berthollet
by artist: Julie Berthollet
by artist: Vincent Forestier
in album: 10 ans !
  type: MusicAlbum
  date published: 2024-11-15
isrc code: GBAYC1900187
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T06:51:38+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1dfdafcb9dddc20f6431878a7f74845081d53ee60fe36b5c83f7d8a65d411c9c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956894
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956894
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1900187
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T07:53:57Z
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 0x1dfdafcb9dddc20f6431878a7f74845081d53ee60fe36b5c83f7d8a65d411c9c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBAYC1900187.
  date published: 2026-07-06T07:53:57Z
audio: Je m'voyais déjà
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 157.092
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.382
  additional property: Energy
    type: PropertyValue
    value: 0.23
  additional property: Speechiness
    type: PropertyValue
    value: 0.053
  additional property: Acousticness
    type: PropertyValue
    value: 0.948
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.277
  additional property: Liveness
    type: PropertyValue
    value: 0.239
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.634
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.747
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

The Skye Boat Song
type: MusicRecording
duration: PT2M3S
duration ms: 123306
explicit: false
by artist: Anonymous
by artist: Camille Berthollet
by artist: Julie Berthollet
by artist: Jean-Philippe Batailley
in album: 10 ans !
  type: MusicAlbum
  date published: 2024-11-15
isrc code: GBAYC2101847
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T07:41:13+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa68a4922b8d640b5aa03c1b831d0c3870b43edd2c924122893d8119e3b1ca08c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957046
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/GBAYC2101847
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T14:04:01Z
additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T14:04:01Z
audio: The Skye Boat Song
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  additional property: Valence (Positivity)
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  additional property: Key Name
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Le ballet des épousailles (Arr. Martin Batchelar d'après l'ouverture de Guillaume Tell de Gioacchino Rossini)
type: MusicRecording
duration: PT2M44S
duration ms: 164613
explicit: false
by artist: Gioachino Rossini
by artist: Martin Batchelar
by artist: Camille Berthollet
by artist: Julie Berthollet
by artist: Michel Bourcier
by artist: Thomas Bowes
by artist: Vincent Forestier
by artist: Gavin Greenaway
by artist: Puy du Fou Orchestra
in album: 10 ans !
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  date published: 2024-11-15
genre: classical
genre: opera
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf423663ca023c8f67aacc9e30ab7f2837dca7355ddd33d3cec424c063e5904b. 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/GBAYC2001811.
  date published: 2026-07-02T03:55:08Z
audio: Le ballet des épousailles (Arr. Martin Batchelar d'après l'ouverture de Guillaume Tell de Gioacchino Rossini)
  type: AudioObject
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Vivaldi: L'estro armonico, Op. 3: Concerto No. 10 for Four Violins in B Minor, RV 580: I. Allegro
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duration: PT3M25S
duration ms: 205120
explicit: false
by artist: Antonio Vivaldi
by artist: Camille Berthollet
by artist: Julie Berthollet
by artist: Mathilde Borsarello-Herrmann
by artist: Fabien Mastrantonio
by artist: Benjamin Levy
by artist: String ensemble of the Orchestre National du Capitole de Toulouse
in album: 10 ans !
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isrc code: GBAYC1902493
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additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  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 0x5c135a197c71b16cfdf2d6f34eb30ee9799b65b42c04aa52abbd31570f2277b8. 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/GBAYC1902493.
  date published: 2026-07-07T14:04:01Z
audio: Vivaldi: L'estro armonico, Op. 3: Concerto No. 10 for Four Violins in B Minor, RV 580: I. Allegro
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Danceability
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Game of Thrones (Medley)
type: MusicRecording
duration: PT5M33S
duration ms: 333133
explicit: false
by artist: Ramin Djawadi
by artist: Camille Berthollet
by artist: Julie Berthollet
by artist: Ernst van Tiel
by artist: Orchestre national d'île-de-France
in album: 10 ans !
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  date published: 2024-11-15
isrc code: GBAYC2101844
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35de0d2a5615d18a04f5838e6e19f136bfaf44afc6dc7331021143e6599da138. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBAYC2101844.
  date published: 2026-07-07T14:50:41Z
audio: Game of Thrones (Medley)
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  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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    type: PropertyValue
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  additional property: Danceability
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  additional property: Speechiness
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  additional property: Valence (Positivity)
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La La Land (Medley)
type: MusicRecording
duration: PT4M34S
duration ms: 274813
explicit: false
by artist: Justin Hurwitz
by artist: Camille Berthollet
by artist: Julie Berthollet
by artist: Ernst van Tiel
by artist: Orchestre national d'île-de-France
in album: 10 ans !
  type: MusicAlbum
  date published: 2024-11-15
genre: hollywood
genre: movie-tunes
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightChainExplorerURL
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