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description: Friedrich "Fritz" Kreisler (February 2, 1875 – January 29, 1962) was an Austrian-born American violinist and composer. One of the most noted violin masters of his day, he was known for his sweet tone
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album: Remembrances. Piano Essentials from the Golden Age
album: Reminiscences. Hidden Treasures of Classical Piano
album: A Tribute to Fritz Kreisler
album: Fake Paganini Recordings 1936 - 1943
album: Casals Encores – A Cello Tribute to Pablo Casals
album: Liebesleid
album: Smörgasbord: Encores and Short Pieces for Cello and Piano
album: Beethoven, Schumann, Franck (Extended Edition)
album: Mozart & Beethoven: Works for Violin
album: Fantasie. Heritage Beethoven & Rachmaninoff
album: Fritz Kreisler: Music for Violin and Piano
album: Kreisler: Complete Recordings, Vol. 5 (1919-1924)
album: Kreisler: Complete Recordings, Vol. 4 (1916-1919)
album: The Four Seasons & Other Treasures for Violin. Vivaldi, Mozart, Bach, Debussy, Kreisler...
album: My Kreisler Album
album: The Bell Telephone Hour Recordings, Vol. 3: Works by Kreisler, Haydn & Others (Live) [Remastered 2023]
album: The Bell Telephone Hour Recordings, Vol. 2: Concertos by Corelli, Dvořák & Others (Live) [Remastered 2022]
album: The Bell Telephone Hour Recordings, Vol. 1: Concertos by Mozart, Viotti, Mendelssohn, Bruch & Brahms (Live) [Remastered 2022]
album: The Complete Recordings, Vol. 11
album: Vivaldi: The Four Seasons
album: Liszt, Gluck & Others: Piano Works
album: Kreisler: The Complete Recordings, Vol. 10
album: Beethoven, Mendelssohn & Others: Works
album: Kreisler: The Complete Recordings, Vol. 9
album: Favourite Short Pieces
album: The Complete Recordings, Vol. 8 (1926-1927)
album: Kreisler: The Complete Recordings, Vol. 7 (1921-1925)
album: Kreisler: The Complete Original Works for Violin and Piano
album: The Kreisler Story
album: Fritz Kreisler Transcriptions for Violin & Piano
album: From Fritz to Django
album: Kreisler & Joachim: Streichquartette
album: Kreisler: The Complete Recordings, Vol. 6
album: Rachmaninov: Complete Works For Piano

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Dido & Aeneas (Arr. For Piano by Irene Cantos): Act III, Z. 626: X. Dido's Lament
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Sonata No. 88, in D-Flat Major
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  additional property: Valence (Positivity)
    type: PropertyValue
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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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Sonatine in C Major WoO. 51: I. Allegro
type: MusicRecording
duration: PT5M11S
duration ms: 311268
explicit: false
by artist: Ludwig van Beethoven
by artist: Irene Cantos
in album: Passages. Hidden Treasures of Classical Piano.
  type: MusicAlbum
  date published: 2023-12-13
popularity: 25
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: DEPI82323863
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
  value: https://blockstream.info/api/block-height/960314
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEPI82323863
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T21:00:46Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f123110843279713c5196b511d6234ea88a4bdbf9e0f0c037a1db2b0a93abad. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEPI82323863 — a six-check JSON result.
  date published: 2026-07-30T21:00:46Z
audio: Sonatine in C Major WoO. 51: I. Allegro
  type: AudioObject
  additional property: Tempo (BPM)
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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: Valence (Positivity)
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Sonatine in C Major WoO. 51: II. Adagio
type: MusicRecording
duration: PT2M9S
duration ms: 129519
explicit: false
by artist: Ludwig van Beethoven
by artist: Irene Cantos
in album: Passages. Hidden Treasures of Classical Piano.
  type: MusicAlbum
  date published: 2023-12-13
popularity: 25
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: DEPI82323864
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/960284
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEPI82323864
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T17:23:26Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a89f453216f7df07304db73fac6212e0b1d1d866eb305a25f7c1700e15efed. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEPI82323864 — a six-check JSON result.
  date published: 2026-07-30T17:23:26Z
audio: Sonatine in C Major WoO. 51: II. Adagio
  type: AudioObject
  additional property: Tempo (BPM)
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    value: 170.192
  additional property: Musical Key
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  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: 0.212
  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
    value: 0.993
  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)
    type: PropertyValue
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  additional property: Key Name
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  additional property: Mode Name
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Haydn: Sonata in D, Hob.XVI:37: I. Allegro Con Brio - From Aeolian Piano Roll
type: MusicRecording
duration: PT3M43S
duration ms: 223266
explicit: false
by artist: Joseph Haydn
by artist: Manuel del Corral
in album: Passages. Hidden Treasures of Classical Piano.
  type: MusicAlbum
  date published: 2023-12-13
popularity: 25
isrc code: DEPI82304418
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T12:29:43+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x53cfcf0225fa9a6c5dccaf1d3eaff23e86c0863c145781704d346a03cbc16e6a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960403
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960403
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEPI82304418
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T13:04:34Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53cfcf0225fa9a6c5dccaf1d3eaff23e86c0863c145781704d346a03cbc16e6a. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEPI82304418 — a six-check JSON result.
  date published: 2026-07-31T13:04:34Z
audio: Haydn: Sonata in D, Hob.XVI:37: I. Allegro Con Brio - From Aeolian Piano Roll
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
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  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
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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
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  additional property: Instrumentalness
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.284
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.677
  additional property: Key Name
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  additional property: Mode Name
    type: PropertyValue
    value: Major

Haydn: Sonata in D, Hob.XVI:37: II. Largo E Sostenuto - From Aeolian Piano Roll
type: MusicRecording
duration: PT2M8S
duration ms: 128006
explicit: false
by artist: Joseph Haydn
by artist: Manuel del Corral
in album: Passages. Hidden Treasures of Classical Piano.
  type: MusicAlbum
  date published: 2023-12-13
popularity: 24
isrc code: DEPI82304419
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T10:16:11+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5844f86d8114c214846d8ab1c30a8aa9a7ad32fa91bcda95033b8ea18154e3cd
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEPI82304419
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5844f86d8114c214846d8ab1c30a8aa9a7ad32fa91bcda95033b8ea18154e3cd. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEPI82304419 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Haydn: Sonata in D, Hob.XVI:37: II. Largo E Sostenuto - From Aeolian Piano Roll
  type: AudioObject
  additional property: Tempo (BPM)
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  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: 0.471
  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
    value: 0.958
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.507
  additional property: Loudness (dB)
    type: PropertyValue
    value: -31.896
  additional property: Key Name
    type: PropertyValue
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  additional property: Mode Name
    type: PropertyValue
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Haydn: Sonata in D, Hob.XVI:37: III. Finale. Presto Ma Non Troppo - From Aeolian Piano Roll
type: MusicRecording
duration: PT3M15S
duration ms: 195762
explicit: false
by artist: Joseph Haydn
by artist: Manuel del Corral
in album: Passages. Hidden Treasures of Classical Piano.
  type: MusicAlbum
  date published: 2023-12-13
popularity: 24
isrc code: DEPI82304420
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T07:09:33+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3b4654039e8fac5d5589c90e0db70a677d8ed6839c310c15ca994a5a854073f2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960368
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960368
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEPI82304420
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T08:26:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4654039e8fac5d5589c90e0db70a677d8ed6839c310c15ca994a5a854073f2. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEPI82304420 — a six-check JSON result.
  date published: 2026-07-31T08:26:41Z
audio: Haydn: Sonata in D, Hob.XVI:37: III. Finale. Presto Ma Non Troppo - From Aeolian Piano Roll
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 95.759
  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: 0.485
  additional property: Energy
    type: PropertyValue
    value: 0.067
  additional property: Speechiness
    type: PropertyValue
    value: 0.048
  additional property: Acousticness
    type: PropertyValue
    value: 0.993
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.899
  additional property: Liveness
    type: PropertyValue
    value: 0.123
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.488
  additional property: Loudness (dB)
    type: PropertyValue
    value: -28.297
  additional property: Key Name
    type: PropertyValue
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  additional property: Mode Name
    type: PropertyValue
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8 Pieces for Piano, Op. 72: No. 4, Danse Characteristique
type: MusicRecording
duration: PT3M9S
duration ms: 189712
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Manuel del Corral
in album: Passages. Hidden Treasures of Classical Piano.
  type: MusicAlbum
  date published: 2023-12-13
popularity: 22
isrc code: DEPI82313922
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T12:02:10+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe1915632e2370afd018275f6c053ff097dcb9253b37281835f5edf03540b6235
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960397
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEPI82313922
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T12:24:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1915632e2370afd018275f6c053ff097dcb9253b37281835f5edf03540b6235. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEPI82313922 — a six-check JSON result.
  date published: 2026-07-31T12:24:41Z
audio: 8 Pieces for Piano, Op. 72: No. 4, Danse Characteristique
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 140.52
  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: 0.517
  additional property: Energy
    type: PropertyValue
    value: 0.253
  additional property: Speechiness
    type: PropertyValue
    value: 0.038
  additional property: Acousticness
    type: PropertyValue
    value: 0.993
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.907
  additional property: Liveness
    type: PropertyValue
    value: 0.102
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.297
  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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Ein Traum, Op. 48 No. 6
type: MusicRecording
duration: PT1M44S
duration ms: 104390
explicit: false
by artist: Edvard Grieg
by artist: Manuel del Corral
in album: Passages. Hidden Treasures of Classical Piano.
  type: MusicAlbum
  date published: 2023-12-13
popularity: 22
genre: classical
genre: late-romantic-era
genre: norwegian-classical
isrc code: DEPI82313923
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T22:02:40+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf73fbf7c533465d6dfe6d11097bd0bd33e86fe878f8a80edae2350ed07a20e9c
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960321
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEPI82313923
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T22:27:30Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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Le Cygne
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Nocturnes, Op. 55: No. 1, in F Minor
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Hymn to the Sun
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Prelude, Op. 3 No. 2, in C# Minor
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Remembrances. Piano Essentials from the Golden Age
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Reminiscences. Hidden Treasures of Classical Piano
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  additional property: CopyrightStatus
  additional property: CopyrightRegisteredAt
  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: Die Ruinen Von Athen, Op. 113: Turkish March (Arr. Solo Piano by Rachmaninoff) - From A. 68771-H

CopyrightStatus
type: PropertyValue
value: registered

CopyrightRegisteredAt
type: PropertyValue
value: 2026-07-31T06:10:22+00:00

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0xc80b42b8535854137200e3c7efa8ca4d4feff42056a8fbd2ddf6b54765f442c5

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 960360

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/960360

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEPI82400032

OTSTimestamp
type: PropertyValue
value: 2026-07-31T06:42:11Z

OTSVerifyInstructions
type: PropertyValue
value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80b42b8535854137200e3c7efa8ca4d4feff42056a8fbd2ddf6b54765f442c5. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEPI82400032 — a six-check JSON result.
date published: 2026-07-31T06:42:11Z

Die Ruinen Von Athen, Op. 113: Turkish March (Arr. Solo Piano by Rachmaninoff) - From A. 68771-H
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 121.7
additional property: Musical Key
  type: PropertyValue
  value: 10
additional property: Mode (Major/Minor)
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additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.564
additional property: Energy
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additional property: Speechiness
  type: PropertyValue
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additional property: Acousticness
  type: PropertyValue
  value: 0.987
additional property: Instrumentalness
  type: PropertyValue
  value: 0.916
additional property: Liveness
  type: PropertyValue
  value: 0.098
additional property: Valence (Positivity)
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  value: 0.388
additional property: Loudness (dB)
  type: PropertyValue
  value: -15.921
additional property: Key Name
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additional property: Mode Name
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A Tribute to Fritz Kreisler
type: MusicAlbum
date published: 2012-01-01
track: Praeludium and Allegro in the Style of Pugnani
  type: MusicRecording
  duration: PT4M41S
  duration ms: 281240
  explicit: false
  by artist: Fritz Kreisler
  by artist: Ruggiero Ricci
  by artist: Brooks Smith
  in album: A Tribute to Fritz Kreisler
    type: MusicAlbum
    date published: 2012-01-01
  genre: classical
  genre: post-romantic-era
  genre: violin
  isrc code: DEF056120180
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-29T21:27:23+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xf9a2e050f2cb2ae1ccd4c6074f98c7b97477673c80071a4fa9af6ec8bb2593a0
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960150
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960150
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056120180
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-29T21:51:49Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a2e050f2cb2ae1ccd4c6074f98c7b97477673c80071a4fa9af6ec8bb2593a0. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056120180 — a six-check JSON result.
    date published: 2026-07-29T21:51:49Z
  audio: Praeludium and Allegro in the Style of Pugnani
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 134.93
    additional property: Musical Key
      type: PropertyValue
      value: 4
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.415
    additional property: Energy
      type: PropertyValue
      value: 0.205
    additional property: Speechiness
      type: PropertyValue
      value: 0.052
    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: 0.664
    additional property: Loudness (dB)
      type: PropertyValue
      value: -24.806
    additional property: Key Name
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      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Siciliano and Rigaudon in the Style of Francoeur
  type: MusicRecording
  duration: PT3M57S
  duration ms: 237840
  explicit: false
  by artist: Fritz Kreisler
  by artist: Ruggiero Ricci
  by artist: Brooks Smith
  in album: A Tribute to Fritz Kreisler
    type: MusicAlbum
    date published: 2012-01-01
  genre: classical
  genre: post-romantic-era
  genre: violin
  isrc code: DEF056120190
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-29T10:54:07+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x1d3312aef1bfa65966bd177f4ea896b97bf4b4da9d2264591fed49876fad0bd9
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960095
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960095
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056120190
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-29T11:07:37Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3312aef1bfa65966bd177f4ea896b97bf4b4da9d2264591fed49876fad0bd9. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056120190 — a six-check JSON result.
    date published: 2026-07-29T11:07:37Z
  audio: Siciliano and Rigaudon in the Style of Francoeur
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 172.384
    additional property: Musical Key
      type: PropertyValue
      value: 11
    additional property: Mode (Major/Minor)
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      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.296
    additional property: Energy
      type: PropertyValue
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    additional property: Speechiness
      type: PropertyValue
      value: 0.057
    additional property: Acousticness
      type: PropertyValue
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    additional property: Instrumentalness
      type: PropertyValue
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    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
      type: PropertyValue
      value: -26.758
    additional property: Key Name
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      value: B
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: La Gitana
  type: MusicRecording
  duration: PT2M55S
  duration ms: 175160
  explicit: false
  by artist: Fritz Kreisler
  by artist: David Oistrakh
  by artist: Vladimir Yampolsky
  in album: A Tribute to Fritz Kreisler
    type: MusicAlbum
    date published: 2012-01-01
  genre: classical
  genre: post-romantic-era
  genre: violin
  isrc code: DEF054909130
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
  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: La Gitana
track: Rondino on a Theme by Beethoven: Rondino on a Theme by Beethoven
track: Variations on a Theme by Corelli
track: Sadko: Song of India (Arr. Kreisler for Violin and Piano)
track: Tango, Op.165, No.2 - Arr. Fritz Kreisler: Andantino
track: Liebesleid, Old Viennese Dance No. 2
track: Larghetto - Arr. Fritz Kreisler: Andante con moto
track: Schön Rosmarin, Old Viennese Dance No. 3
track: 3 Old Viennese Dances: Liebesfreud, Old Viennese Dance No. 1
track: Spanish dance - Arr. Fritz Kreisler: 5. Andaluza (Arr. Kreisler for Violin and Piano)
track: Lieder ohne Worte, Op. 62: VI. Frühlingslied (Arr. by Fritz Kreisler for Violin and Piano)

CopyrightRegisteredAt
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value: 2026-07-30T01:11:52+00:00

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0x5f340159d696a01077be3ec17694e14600ae66c104b7d3059730ea5e8e08dd9b

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 960185

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/960185

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF054909130

OTSTimestamp
type: PropertyValue
value: 2026-07-30T01:32:48Z

OTSVerifyInstructions
type: PropertyValue
value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f340159d696a01077be3ec17694e14600ae66c104b7d3059730ea5e8e08dd9b. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF054909130 — a six-check JSON result.
date published: 2026-07-30T01:32:48Z

La Gitana
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 110.608
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: 0.254
additional property: Energy
  type: PropertyValue
  value: 0.152
additional property: Speechiness
  type: PropertyValue
  value: 0.044
additional property: Acousticness
  type: PropertyValue
  value: 0.988
additional property: Instrumentalness
  type: PropertyValue
  value: 0.007
additional property: Liveness
  type: PropertyValue
  value: 0.077
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.376
additional property: Loudness (dB)
  type: PropertyValue
  value: -21.942
additional property: Key Name
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  value: D
additional property: Mode Name
  type: PropertyValue
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Rondino on a Theme by Beethoven: Rondino on a Theme by Beethoven
type: MusicRecording
duration: PT2M27S
duration ms: 147320
explicit: false
by artist: Fritz Kreisler
by artist: Ruggiero Ricci
by artist: Brooks Smith
in album: A Tribute to Fritz Kreisler
  type: MusicAlbum
  date published: 2012-01-01
genre: classical
genre: post-romantic-era
genre: violin
isrc code: DEF056120210
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T14:29:38+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x809151893d5e72dce276c8a3b54668f5d9edae5e7a1ffeff69f70b17f2cd6ff6
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/DEF056120210
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809151893d5e72dce276c8a3b54668f5d9edae5e7a1ffeff69f70b17f2cd6ff6. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056120210 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Rondino on a Theme by Beethoven: Rondino on a Theme by Beethoven
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 127.706
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
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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
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  additional property: Valence (Positivity)
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    type: PropertyValue
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  additional property: Key Name
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  additional property: Mode Name
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Variations on a Theme by Corelli
type: MusicRecording
duration: PT2M53S
duration ms: 173880
explicit: false
by artist: Giuseppe Tartini
by artist: Ruggiero Ricci
by artist: Brooks Smith
in album: A Tribute to Fritz Kreisler
  type: MusicAlbum
  date published: 2012-01-01
genre: classical
genre: baroque
genre: italian-baroque
isrc code: DEF056120220
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T10:52:54+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc4d4074a3caa6687d2772b4c23d9d1dedfcb0acc2c0cef3fbc63431a5e08de87
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957020
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957020
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056120220
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T09:18:01Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d4074a3caa6687d2772b4c23d9d1dedfcb0acc2c0cef3fbc63431a5e08de87. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056120220 — a six-check JSON result.
  date published: 2026-07-07T09:18:01Z
audio: Variations on a Theme by Corelli
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 121.899
  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: 0.554
  additional property: Energy
    type: PropertyValue
    value: 0.184
  additional property: Speechiness
    type: PropertyValue
    value: 0.056
  additional property: Acousticness
    type: PropertyValue
    value: 0.965
  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
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    value: 0.929
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.406
  additional property: Key Name
    type: PropertyValue
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  additional property: Mode Name
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    value: Major

Sadko: Song of India (Arr. Kreisler for Violin and Piano)
type: MusicRecording
duration: PT3M35S
duration ms: 215280
explicit: false
by artist: Nikolai Rimsky-Korsakov
by artist: Christian Ferras
by artist: Jean-Claude Ambrosini
in album: A Tribute to Fritz Kreisler
  type: MusicAlbum
  date published: 2012-01-01
genre: classical
genre: late-romantic-era
genre: early-modern-classical
genre: avant-garde
genre: russian-romanticism
isrc code: DEF056803000
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T08:23:36+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa12e2bd03ac59ed2571013f2ee4bf8e0d3cf74ddf48a2ccc150d0e56c599bf24
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/DEF056803000
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12e2bd03ac59ed2571013f2ee4bf8e0d3cf74ddf48a2ccc150d0e56c599bf24. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056803000 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Sadko: Song of India (Arr. Kreisler for Violin and Piano)
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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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Tango, Op.165, No.2 - Arr. Fritz Kreisler: Andantino
type: MusicRecording
duration: PT2M30S
duration ms: 150946
explicit: false
by artist: Isaac Albéniz
by artist: Shlomo Mintz
by artist: Clifford Benson
in album: A Tribute to Fritz Kreisler
  type: MusicAlbum
  date published: 2012-01-01
genre: classical
genre: classical-piano
isrc code: DEF058000130
additional property: CopyrightID
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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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/DEF058000130
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4825302cf62a1bb2773761ac48c64cd9043c17f4ba96bfe7774b23a53294278e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF058000130 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Tango, Op.165, No.2 - Arr. Fritz Kreisler: Andantino
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Liebesleid, Old Viennese Dance No. 2
type: MusicRecording
duration: PT3M32S
duration ms: 212520
explicit: false
by artist: Fritz Kreisler
by artist: Ruggiero Ricci
by artist: Brooks Smith
in album: A Tribute to Fritz Kreisler
  type: MusicAlbum
  date published: 2012-01-01
genre: classical
genre: post-romantic-era
genre: violin
isrc code: DEF056120270
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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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/DEF056120270
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495c4276f55a1167598c725a0ad7acc577c5963fed5c6b3ac1bd97c1576089a6. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056120270 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Liebesleid, Old Viennese Dance No. 2
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  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Valence (Positivity)
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Larghetto - Arr. Fritz Kreisler: Andante con moto
type: MusicRecording
duration: PT2M28S
duration ms: 148840
explicit: false
by artist: Carl Maria von Weber
by artist: Shlomo Mintz
by artist: Clifford Benson
in album: A Tribute to Fritz Kreisler
  type: MusicAlbum
  date published: 2012-01-01
genre: classical
genre: opera
isrc code: DEF058000160
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/DEF058000160
additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69976a85d1f9fb360e7eab2106f274a0226cacd3e8a831547d4211ff6230f78d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF058000160 — a six-check JSON result.
  date published: 2026-07-08T03:22:41Z
audio: Larghetto - Arr. Fritz Kreisler: Andante con moto
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Mode (Major/Minor)
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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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Schön Rosmarin, Old Viennese Dance No. 3
type: MusicRecording
duration: PT1M53S
duration ms: 113120
explicit: false
by artist: Fritz Kreisler
by artist: Ruggiero Ricci
by artist: Brooks Smith
in album: A Tribute to Fritz Kreisler
  type: MusicAlbum
  date published: 2012-01-01
genre: classical
genre: post-romantic-era
genre: violin
isrc code: DEF056120280
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: 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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9acfeeecc77fee214ecf7c11c0e96c8370b55c3737122aa306c5c4298f9a340. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056120280 — a six-check JSON result.
  date published: 2026-07-31T08:26:41Z
audio: Schön Rosmarin, Old Viennese Dance No. 3
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Mode (Major/Minor)
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  additional property: Energy
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La Gitana
type: MusicRecording
duration: PT2M46S
duration ms: 166840
explicit: false
by artist: Fritz Kreisler
by artist: Ruggiero Ricci
by artist: Brooks Smith
in album: A Tribute to Fritz Kreisler
  type: MusicAlbum
  date published: 2012-01-01
genre: classical
genre: post-romantic-era
genre: violin
isrc code: DEF056120290
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: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0663e5ac375bffa5894323e05e15e3bec0b0f3b662cc745dfd26bd545824db. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056120290 — a six-check JSON result.
  date published: 2026-07-31T13:04:34Z
audio: La Gitana
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  additional property: Tempo (BPM)
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  additional property: Mode (Major/Minor)
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3 Old Viennese Dances: Liebesfreud, Old Viennese Dance No. 1
type: MusicRecording
duration: PT3M19S
duration ms: 199226
explicit: false
by artist: Fritz Kreisler
by artist: Haddon Squire
in album: A Tribute to Fritz Kreisler
  type: MusicAlbum
  date published: 2012-01-01
genre: classical
genre: post-romantic-era
genre: violin
isrc code: DEF051102010
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: 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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6849b7642180b17d70b1fb618640172c2274863c0aa62ab6c80a7abdd31de9f. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF051102010 — a six-check JSON result.
  date published: 2026-07-31T19:53:13Z
audio: 3 Old Viennese Dances: Liebesfreud, Old Viennese Dance No. 1
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Acousticness
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  additional property: Loudness (dB)
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  additional property: Mode Name
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Spanish dance - Arr. Fritz Kreisler: 5. Andaluza (Arr. Kreisler for Violin and Piano)
type: MusicRecording
duration: PT3M25S
duration ms: 205373
explicit: false
by artist: Enrique Granados
by artist: Shlomo Mintz
by artist: Clifford Benson
in album: A Tribute to Fritz Kreisler
  type: MusicAlbum
  date published: 2012-01-01
isrc code: DEF058000240
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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Lieder ohne Worte, Op. 62: VI. Frühlingslied (Arr. by Fritz Kreisler for Violin and Piano)
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by artist: Anne-Sophie Mutter
by artist: André Previn
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genre: early-romantic-era
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Fake Paganini Recordings 1936 - 1943
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date published: 2021-03-19

Casals Encores – A Cello Tribute to Pablo Casals
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:20:19Z
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Liebesleid
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Smörgasbord: Encores and Short Pieces for Cello and Piano
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  subject of: OpenTimestamps Proof of Existence
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-31T04:14:58Z
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  subject of: OpenTimestamps Proof of Existence
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track: Violin Sonata No. 9 in A Major, Op. 47 "Kreutzer": I. Adagio sostenuto - Presto
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track: Violin Sonata in A Major, FWV 8: IV. Allegretto poco mosso
track: 3 Old Viennese Dances: No. 2, Liebesleid

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OTSVerifyInstructions
type: PropertyValue
value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764bb87c1f19323f92147c71aba4201a1c026fbacedea2712eb930c0cce5f5cb. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN962202263 — a six-check JSON result.
date published: 2026-07-31T23:30:38Z

Violin Sonata No. 1 in A Minor, Op. 105: III. Lebhaft
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 134.867
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: 0.456
additional property: Energy
  type: PropertyValue
  value: 0.241
additional property: Speechiness
  type: PropertyValue
  value: 0.043
additional property: Acousticness
  type: PropertyValue
  value: 0.979
additional property: Instrumentalness
  type: PropertyValue
  value: 0.348
additional property: Liveness
  type: PropertyValue
  value: 0.095
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.595
additional property: Loudness (dB)
  type: PropertyValue
  value: -21.661
additional property: Key Name
  type: PropertyValue
  value: A
additional property: Mode Name
  type: PropertyValue
  value: Minor

Violin Sonata No. 9 in A Major, Op. 47 "Kreutzer": I. Adagio sostenuto - Presto
type: MusicRecording
duration: PT13M45S
duration ms: 825133
explicit: false
by artist: Ludwig van Beethoven
by artist: Renaud Capuçon
by artist: Martha Argerich
in album: Beethoven, Schumann, Franck (Extended Edition)
  type: MusicAlbum
  date published: 2023-01-06
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: DEN962202271
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T06:23:28+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb627288b4c3bab8bcac0d6715a2ea5495b345775e7d4171f4600dce791c080ae
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/DEN962202271
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb627288b4c3bab8bcac0d6715a2ea5495b345775e7d4171f4600dce791c080ae. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN962202271 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Violin Sonata No. 9 in A Major, Op. 47 "Kreutzer": I. Adagio sostenuto - Presto
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 98.642
  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: 0.292
  additional property: Energy
    type: PropertyValue
    value: 0.199
  additional property: Speechiness
    type: PropertyValue
    value: 0.052
  additional property: Acousticness
    type: PropertyValue
    value: 0.97
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.3
  additional property: Liveness
    type: PropertyValue
    value: 0.084
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.124
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.13
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Violin Sonata No. 9 in A Major, Op. 47 "Kreutzer": II. Andante con variazioni
type: MusicRecording
duration: PT16M5S
duration ms: 965373
explicit: false
by artist: Ludwig van Beethoven
by artist: Renaud Capuçon
by artist: Martha Argerich
in album: Beethoven, Schumann, Franck (Extended Edition)
  type: MusicAlbum
  date published: 2023-01-06
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: DEN962202272
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7e61dc81aed6c80710d37812375c13ee7316c2d7b93d732303c75359885868bf
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960448
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960448
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN962202272
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T18:48:12Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e61dc81aed6c80710d37812375c13ee7316c2d7b93d732303c75359885868bf. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN962202272 — a six-check JSON result.
  date published: 2026-07-31T18:48:12Z
audio: Violin Sonata No. 9 in A Major, Op. 47 "Kreutzer": II. Andante con variazioni
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 139.093
  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: 0.347
  additional property: Energy
    type: PropertyValue
    value: 0.088
  additional property: Speechiness
    type: PropertyValue
    value: 0.047
  additional property: Acousticness
    type: PropertyValue
    value: 0.976
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.033
  additional property: Liveness
    type: PropertyValue
    value: 0.133
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.141
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.004
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Violin Sonata No. 9 in A Major, Op. 47 "Kreutzer": III. Finale (Presto)
type: MusicRecording
duration: PT8M39S
duration ms: 519146
explicit: false
by artist: Ludwig van Beethoven
by artist: Renaud Capuçon
by artist: Martha Argerich
in album: Beethoven, Schumann, Franck (Extended Edition)
  type: MusicAlbum
  date published: 2023-01-06
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: DEN962202273
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T13:00:57+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe7b8a2477b6cda1e6c3544c8841f9df3959dab997f83ea2690f1522410b855c7
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/DEN962202273
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b8a2477b6cda1e6c3544c8841f9df3959dab997f83ea2690f1522410b855c7. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN962202273 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Violin Sonata No. 9 in A Major, Op. 47 "Kreutzer": III. Finale (Presto)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 113.942
  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: 0.447
  additional property: Energy
    type: PropertyValue
    value: 0.201
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.976
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.372
  additional property: Liveness
    type: PropertyValue
    value: 0.1
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.306
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.013
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Violin Sonata in A Major, FWV 8: I. Allegretto ben moderato
type: MusicRecording
duration: PT6M30S
duration ms: 390773
explicit: false
by artist: César Franck
by artist: Renaud Capuçon
by artist: Martha Argerich
in album: Beethoven, Schumann, Franck (Extended Edition)
  type: MusicAlbum
  date published: 2023-01-06
genre: chamber-music
isrc code: DEN962202281
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T01:22:08+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4f737bcd8839a743ea50ef4078870bb268898d7d79d120d3ec050c8750582e36
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960334
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960334
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN962202281
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T02:19:15Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f737bcd8839a743ea50ef4078870bb268898d7d79d120d3ec050c8750582e36. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN962202281 — a six-check JSON result.
  date published: 2026-07-31T02:19:15Z
audio: Violin Sonata in A Major, FWV 8: I. Allegretto ben moderato
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 106.675
  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: 0.198
  additional property: Energy
    type: PropertyValue
    value: 0.089
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.981
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.103
  additional property: Liveness
    type: PropertyValue
    value: 0.142
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.038
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.026
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Violin Sonata in A Major, FWV 8: II. Allegro
type: MusicRecording
duration: PT8M4S
duration ms: 484120
explicit: false
by artist: César Franck
by artist: Renaud Capuçon
by artist: Martha Argerich
in album: Beethoven, Schumann, Franck (Extended Edition)
  type: MusicAlbum
  date published: 2023-01-06
genre: chamber-music
isrc code: DEN962202282
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T09:50:55+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcbc08b4c571783170e93cf8e9bc79a4486e79396c5414f051b2e5c7e3bb8b53e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960387
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960387
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN962202282
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T10:06:30Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc08b4c571783170e93cf8e9bc79a4486e79396c5414f051b2e5c7e3bb8b53e. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN962202282 — a six-check JSON result.
  date published: 2026-07-31T10:06:30Z
audio: Violin Sonata in A Major, FWV 8: II. Allegro
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 102.44
  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: 0.164
  additional property: Energy
    type: PropertyValue
    value: 0.193
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
    type: PropertyValue
    value: 0.973
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.072
  additional property: Liveness
    type: PropertyValue
    value: 0.27
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.04
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.836
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Violin Sonata in A Major, FWV 8: III. Recitativo - Fantasia (Ben moderato)
type: MusicRecording
duration: PT7M28S
duration ms: 448853
explicit: false
by artist: César Franck
by artist: Renaud Capuçon
by artist: Martha Argerich
in album: Beethoven, Schumann, Franck (Extended Edition)
  type: MusicAlbum
  date published: 2023-01-06
genre: chamber-music
isrc code: DEN962202283
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T15:41:18+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x760dee72211463c77870ddf9e74543df4063a429b410898b483e96820dfa208f
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/DEN962202283
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760dee72211463c77870ddf9e74543df4063a429b410898b483e96820dfa208f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN962202283 — a six-check JSON result.
  date published: 2026-07-08T03:22:41Z
audio: Violin Sonata in A Major, FWV 8: III. Recitativo - Fantasia (Ben moderato)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 113.145
  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: 0.177
  additional property: Energy
    type: PropertyValue
    value: 0.059
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.974
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.035
  additional property: Liveness
    type: PropertyValue
    value: 0.116
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.037
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.596
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Violin Sonata in A Major, FWV 8: IV. Allegretto poco mosso
type: MusicRecording
duration: PT5M59S
duration ms: 359493
explicit: false
by artist: César Franck
by artist: Renaud Capuçon
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Fantasie. Heritage Beethoven & Rachmaninoff
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Fritz Kreisler: Music for Violin and Piano
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Kreisler: Complete Recordings, Vol. 5 (1919-1924)
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Kreisler: Complete Recordings, Vol. 4 (1916-1919)
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The Four Seasons & Other Treasures for Violin. Vivaldi, Mozart, Bach, Debussy, Kreisler...
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track: Vivaldi: The Four Seasons, Violin Concerto in F Minor, Op. 8 No. 4, RV 297 "Winter": I. Allegro non molto
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track: Bach, JS: Concerto for Two Violins in D Minor, BWV 1043: I. Vivace
track: Bach, JS: Concerto for Two Violins in D Minor, BWV 1043: II. Largo, ma non tanto
track: Bach, JS: Concerto for Two Violins in D Minor, BWV 1043: III. Allegro
track: Debussy: Préludes, Livre I, CD 125, L. 117: No. 8, La fille aux cheveux de lin (Arr. Hartmann for Violin and Piano)
track: Debussy: Petite suite, CD 71, L. 65: I. En bateau (Arr. Choisnel for Violin and Piano)
track: Debussy: Children's Corner, CD 119, L. 113: VI. Golliwog's Cakewalk (Arr. Heifetz for Violin and Piano)
track: Kreisler: Caprice viennois, Op. 2
track: Kreisler: 3 Old Viennese Dances: No. 3, Schön Rosmarin
track: Kreisler: 3 Old Viennese Dances: No. 2, Liebesleid
track: Dvořák: Slavonic Dances, Op. 72, B. 147: No. 2 in E Minor (Arr. Kreisler for Violin and Piano)
track: Dvořák: Gypsy Melodies, Op. 55, B. 104: No. 4, Songs My Mother Taught Me (Arr. Kreisler for Violin and Piano)
track: Fauré: Berceuse, Op. 16
track: Saint-Saëns: Le carnival des animaux: XIII. Le cygne (Arr. Heifetz for Violin and Piano)
track: Poulenc: Presto in B-Flat Major, FP 70 (Arr. Heifetz for Violin and Piano)
track: Vivaldi: The Four Seasons, Violin Concerto in E Major, Op. 8 No. 1, RV 269 "Spring": I. Allegro
track: Vivaldi: The Four Seasons, Violin Concerto in E Major, Op. 8 No. 1, RV 269 "Spring": II. Largo
track: Vivaldi: The Four Seasons, Violin Concerto in E Major, Op. 8 No. 1, RV 269 "Spring": III. Allegro
track: Beethoven: Romance for Violin and Orchestra No. 1 in G Major, Op. 40
track: Mozart: Violin Concerto No. 3 in G Major, K. 216: I. Allegro
track: Dvořák: Violin Sonatina in G Major, Op. 100, B. 183: III. Scherzo. Molto vivace
track: Paganini: 24 Caprices, Op. 1: No. 1 in E Major
track: Paganini: Violin Concerto No. 1 in D Major, Op. 6: II. Adagio espressivo
track: Bach, JS: Violin Concerto in E Major, BWV 1042: I. Allegro
track: Bach, JS: Violin Concerto in E Major, BWV 1042: II. Adagio
track: Bach, JS: Violin Concerto in E Major, BWV 1042: III. Allegro assai
track: Beethoven: Triple Concerto in C Major, Op. 56: II. Largo
track: Rachmaninov: 14 Romances, Op. 34: No. 14, Vocalise (Arr. Gutheil for Violin and Piano)
track: Bazzini: Scherzo fantastique, Op. 25 "La ronde des lutins"
track: Paganini: Moto perpetuo, Op. 11 (Arr. Kreisler for Violin and Piano)
track: Korngold: Violin Concerto in D Major, Op. 35: II. Romanze
track: Vivaldi: The Four Seasons, Violin Concerto in F Major, Op. 8 No. 3, RV 293 "Autumn": I. Allegro
track: Vivaldi: The Four Seasons, Violin Concerto in F Major, Op. 8 No. 3, RV 293 "Autumn": II. Adagio molto
track: Vivaldi: The Four Seasons, Violin Concerto in F Major, Op. 8 No. 3, RV 293 "Autumn": III. Allegro
track: Beethoven: Violin Concerto in D Major, Op. 61: III. Rondo. Allegro

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Bach, JS: Concerto for Two Violins in D Minor, BWV 1043: III. Allegro
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  date published: 2026-07-08T03:20:19Z
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Debussy: Préludes, Livre I, CD 125, L. 117: No. 8, La fille aux cheveux de lin (Arr. Hartmann for Violin and Piano)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Debussy: Petite suite, CD 71, L. 65: I. En bateau (Arr. Choisnel for Violin and Piano)
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  date published: 2026-07-08T03:20:19Z
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Debussy: Children's Corner, CD 119, L. 113: VI. Golliwog's Cakewalk (Arr. Heifetz for Violin and Piano)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Kreisler: Caprice viennois, Op. 2
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Kreisler: 3 Old Viennese Dances: No. 3, Schön Rosmarin
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subject of: OpenTimestamps Proof of Existence
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Kreisler: 3 Old Viennese Dances: No. 2, Liebesleid
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-30T07:28:30Z
audio: Kreisler: 3 Old Viennese Dances: No. 2, Liebesleid
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Dvořák: Slavonic Dances, Op. 72, B. 147: No. 2 in E Minor (Arr. Kreisler for Violin and Piano)
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duration: PT3M27S
duration ms: 207546
explicit: false
by artist: Antonín Dvořák
by artist: Itzhak Perlman
by artist: Samuel Sanders
in album: The Four Seasons & Other Treasures for Violin. Vivaldi, Mozart, Bach, Debussy, Kreisler...
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  date published: 2024-10-24
genre: classical
genre: late-romantic-era
genre: czech-classical
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additional property: CopyrightID
additional property: CopyrightStatus
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0382261feb7327ee5f1cd910be0f27ee5b52fad825d3d183cc71bc1790b352. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1500841 — a six-check JSON result.
  date published: 2026-07-31T04:14:58Z
audio: Dvořák: Slavonic Dances, Op. 72, B. 147: No. 2 in E Minor (Arr. Kreisler for Violin and Piano)
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Dvořák: Gypsy Melodies, Op. 55, B. 104: No. 4, Songs My Mother Taught Me (Arr. Kreisler for Violin and Piano)
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duration: PT3M1S
duration ms: 181893
explicit: false
by artist: Antonín Dvořák
by artist: Itzhak Perlman
by artist: Samuel Sanders
in album: The Four Seasons & Other Treasures for Violin. Vivaldi, Mozart, Bach, Debussy, Kreisler...
  type: MusicAlbum
  date published: 2024-10-24
genre: classical
genre: late-romantic-era
genre: czech-classical
isrc code: GBAYC1501795
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightChainExplorerURL
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-29T23:39:29Z
audio: Dvořák: Gypsy Melodies, Op. 55, B. 104: No. 4, Songs My Mother Taught Me (Arr. Kreisler for Violin and Piano)
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Fauré: Berceuse, Op. 16
type: MusicRecording
duration: PT3M22S
duration ms: 202040
explicit: false
by artist: Gabriel Fauré
by artist: Itzhak Perlman
by artist: Samuel Sanders
in album: The Four Seasons & Other Treasures for Violin. Vivaldi, Mozart, Bach, Debussy, Kreisler...
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isrc code: GBAYC1501966
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa510c7406745b758094d8b0e756f90ae862dd1c7bd1acfb29842951e998cbe. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1501966 — a six-check JSON result.
  date published: 2026-07-31T00:26:26Z
audio: Fauré: Berceuse, Op. 16
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  additional property: Tempo (BPM)
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Saint-Saëns: Le carnival des animaux: XIII. Le cygne (Arr. Heifetz for Violin and Piano)
type: MusicRecording
duration: PT3M9S
duration ms: 189040
explicit: false
by artist: Camille Saint-Saëns
by artist: Itzhak Perlman
by artist: Samuel Sanders
in album: The Four Seasons & Other Treasures for Violin. Vivaldi, Mozart, Bach, Debussy, Kreisler...
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  date published: 2024-10-24
genre: classical
genre: late-romantic-era
genre: french-romanticism
isrc code: GBAYC1501859
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: 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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174ea97907c94677b98a420617d389dda5836f317cb4f7ae45a0ee2153d82d42. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1501859 — a six-check JSON result.
  date published: 2026-07-30T04:47:22Z
audio: Saint-Saëns: Le carnival des animaux: XIII. Le cygne (Arr. Heifetz for Violin and Piano)
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Poulenc: Presto in B-Flat Major, FP 70 (Arr. Heifetz for Violin and Piano)
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duration: PT1M49S
duration ms: 109760
explicit: false
by artist: Francis Poulenc
by artist: Itzhak Perlman
by artist: Samuel Sanders
in album: The Four Seasons & Other Treasures for Violin. Vivaldi, Mozart, Bach, Debussy, Kreisler...
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genre: classical
genre: early-modern-classical
genre: neoclassicism
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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: 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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5be089d4ce097e63885971bc99f541c18ef99e4dac3c5db7d766e16de46dc0c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1501858 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Poulenc: Presto in B-Flat Major, FP 70 (Arr. Heifetz for Violin and Piano)
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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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duration: PT3M27S
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explicit: false
by artist: Antonio Vivaldi
by artist: Itzhak Perlman
by artist: London Philharmonic Orchestra
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genre: classical
genre: early-music
genre: baroque
genre: concerto
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
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  date published: 2026-07-08T03:20:19Z
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Vivaldi: The Four Seasons, Violin Concerto in E Major, Op. 8 No. 1, RV 269 "Spring": II. Largo
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Vivaldi: The Four Seasons, Violin Concerto in E Major, Op. 8 No. 1, RV 269 "Spring": III. Allegro
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Beethoven: Romance for Violin and Orchestra No. 1 in G Major, Op. 40
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Mozart: Violin Concerto No. 3 in G Major, K. 216: I. Allegro
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Dvořák: Violin Sonatina in G Major, Op. 100, B. 183: III. Scherzo. Molto vivace
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Paganini: 24 Caprices, Op. 1: No. 1 in E Major
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T14:36:16Z
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Paganini: Violin Concerto No. 1 in D Major, Op. 6: II. Adagio espressivo
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Bach, JS: Violin Concerto in E Major, BWV 1042: I. Allegro
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by artist: Itzhak Perlman
by artist: Daniel Barenboim
by artist: English Chamber Orchestra
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Bach, JS: Violin Concerto in E Major, BWV 1042: II. Adagio
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by artist: Daniel Barenboim
by artist: English Chamber Orchestra
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T08:26:41Z
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Bach, JS: Violin Concerto in E Major, BWV 1042: III. Allegro assai
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by artist: Itzhak Perlman
by artist: Daniel Barenboim
by artist: English Chamber Orchestra
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T18:23:33Z
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Beethoven: Triple Concerto in C Major, Op. 56: II. Largo
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Beethoven: Triple Concerto in C Major, Op. 56: II. Largo
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Rachmaninov: 14 Romances, Op. 34: No. 14, Vocalise (Arr. Gutheil for Violin and Piano)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Bazzini: Scherzo fantastique, Op. 25 "La ronde des lutins"
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subject of: OpenTimestamps Proof of Existence
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Paganini: Moto perpetuo, Op. 11 (Arr. Kreisler for Violin and Piano)
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Korngold: Violin Concerto in D Major, Op. 35: II. Romanze
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Vivaldi: The Four Seasons, Violin Concerto in F Major, Op. 8 No. 3, RV 293 "Autumn": I. Allegro
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Vivaldi: The Four Seasons, Violin Concerto in F Major, Op. 8 No. 3, RV 293 "Autumn": II. Adagio molto
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Vivaldi: The Four Seasons, Violin Concerto in F Major, Op. 8 No. 3, RV 293 "Autumn": III. Allegro
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Beethoven: Violin Concerto in D Major, Op. 61: III. Rondo. Allegro
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My Kreisler Album
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date published: 2023-06-16

The Bell Telephone Hour Recordings, Vol. 3: Works by Kreisler, Haydn & Others (Live) [Remastered 2023]
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date published: 2023-01-06

The Bell Telephone Hour Recordings, Vol. 2: Concertos by Corelli, Dvořák & Others (Live) [Remastered 2022]
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date published: 2022-11-18

The Bell Telephone Hour Recordings, Vol. 1: Concertos by Mozart, Viotti, Mendelssohn, Bruch & Brahms (Live) [Remastered 2022]
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date published: 2022-10-14

The Complete Recordings, Vol. 11
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date published: 2022-02-25

Vivaldi: The Four Seasons
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track: The Four Seasons, Violin Concerto No. 2 in G Minor, RV 315 "Summer": I. Allegro non molto
track: The Four Seasons, Violin Concerto No. 2 in G Minor, RV 315 "Summer": II. Adagio - Presto
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track: The Four Seasons, Violin Concerto No. 3 in F Major, RV 293 "Autumn": I. Allegro
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track: The Four Seasons, Violin Concerto No. 4 in F Minor, RV 297 "Winter": I. Allegro non molto
track: The Four Seasons, Violin Concerto No. 4 in F Minor, RV 297 "Winter": II. Largo
track: The Four Seasons, Violin Concerto No. 4 in F Minor, RV 297 "Winter": III. Allegro
track: Fisherman's Harvest Song
track: Tambourin Chinois, Op. 3
track: Thaïs: Méditation (Arr. R. Nichols for Violin and Piano)
track: La ronde des Lutins

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genre: classical
genre: early-music
genre: baroque
genre: concerto
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9bf6d7a06529e151bb7448d6800417cedb30de9898ba08bd3202775494b1dd7. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBC2100170 — a six-check JSON result.
  date published: 2026-07-30T03:35:13Z
audio: The Four Seasons, Violin Concerto No. 3 in F Major, RV 293 "Autumn": I. Allegro
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The Four Seasons, Violin Concerto No. 3 in F Major, RV 293 "Autumn": II. Adagio
type: MusicRecording
duration: PT2M25S
duration ms: 145186
explicit: false
by artist: Antonio Vivaldi
by artist: Christian Li
by artist: Melbourne Symphony Orchestra
in album: Vivaldi: The Four Seasons
  type: MusicAlbum
  date published: 2021-08-20
genre: classical
genre: early-music
genre: baroque
genre: concerto
isrc code: GBBBC2100171
additional property: CopyrightID
additional property: CopyrightStatus
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8deb4f2dc813c8389307d227f3ec9df43cf30a1143aeba84d4313d30a28902. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBC2100171 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: The Four Seasons, Violin Concerto No. 3 in F Major, RV 293 "Autumn": II. Adagio
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The Four Seasons, Violin Concerto No. 3 in F Major, RV 293 "Autumn": III. Allegro
type: MusicRecording
duration: PT3M23S
duration ms: 203560
explicit: false
by artist: Antonio Vivaldi
by artist: Christian Li
by artist: Melbourne Symphony Orchestra
in album: Vivaldi: The Four Seasons
  type: MusicAlbum
  date published: 2021-08-20
genre: classical
genre: early-music
genre: baroque
genre: concerto
isrc code: GBBBC2100172
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d62a63da0a919510796e66ec4c8022ad15d8216ca5706230387c493ff7bcdf. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBC2100172 — a six-check JSON result.
  date published: 2026-07-13T07:53:33Z
audio: The Four Seasons, Violin Concerto No. 3 in F Major, RV 293 "Autumn": III. Allegro
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The Four Seasons, Violin Concerto No. 4 in F Minor, RV 297 "Winter": I. Allegro non molto
type: MusicRecording
duration: PT3M14S
duration ms: 194306
explicit: false
by artist: Antonio Vivaldi
by artist: Christian Li
by artist: Melbourne Symphony Orchestra
in album: Vivaldi: The Four Seasons
  type: MusicAlbum
  date published: 2021-08-20
genre: classical
genre: early-music
genre: baroque
genre: concerto
isrc code: GBBBC2100173
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
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb954cba3431939b416272867ef5dab7c990188c05049412626b14c2486b6c67c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBC2100173 — a six-check JSON result.
  date published: 2026-07-02T03:55:08Z
audio: The Four Seasons, Violin Concerto No. 4 in F Minor, RV 297 "Winter": I. Allegro non molto
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  additional property: Valence (Positivity)
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  additional property: Key Name
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The Four Seasons, Violin Concerto No. 4 in F Minor, RV 297 "Winter": II. Largo
type: MusicRecording
duration: PT2M9S
duration ms: 129412
explicit: false
by artist: Antonio Vivaldi
by artist: Christian Li
by artist: Melbourne Symphony Orchestra
in album: Vivaldi: The Four Seasons
  type: MusicAlbum
  date published: 2021-08-20
genre: classical
genre: early-music
genre: baroque
genre: concerto
isrc code: GBBBC2100174
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
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11900d3765d5af956cc4f9edba8e82935f3f28692509342e1bebd64abcd6ad19. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBC2100174 — a six-check JSON result.
  date published: 2026-07-07T18:39:05Z
audio: The Four Seasons, Violin Concerto No. 4 in F Minor, RV 297 "Winter": II. Largo
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  additional property: Mode (Major/Minor)
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  additional property: Speechiness
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  additional property: Acousticness
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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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The Four Seasons, Violin Concerto No. 4 in F Minor, RV 297 "Winter": III. Allegro
type: MusicRecording
duration: PT3M17S
duration ms: 197080
explicit: false
by artist: Antonio Vivaldi
by artist: Christian Li
by artist: Melbourne Symphony Orchestra
in album: Vivaldi: The Four Seasons
  type: MusicAlbum
  date published: 2021-08-20
genre: classical
genre: early-music
genre: baroque
genre: concerto
isrc code: GBBBC2100175
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/GBBBC2100175
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f6a942910bad09ed83e03e5eec8a188b2284b306765050b61a2850f4879c20. Chain 2 (Bitcoin): anchored in block 957012 (2026-07-07T08:27:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBC2100175 — a six-check JSON result.
  date published: 2026-07-07T08:27:05Z
audio: The Four Seasons, Violin Concerto No. 4 in F Minor, RV 297 "Winter": III. Allegro
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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Fisherman's Harvest Song
type: MusicRecording
duration: PT6M31S
duration ms: 391866
explicit: false
by artist: Li Zili
by artist: Christian Li
by artist: Timothy Young
in album: Vivaldi: The Four Seasons
  type: MusicAlbum
  date published: 2021-08-20
isrc code: GBBBC2100219
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
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514f43ac4ea5466c44bba0635e39d016c68da03f2c1f2f3b46c6305ecccd43f9. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBC2100219 — a six-check JSON result.
  date published: 2026-07-02T03:55:08Z
audio: Fisherman's Harvest Song
  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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Tambourin Chinois, Op. 3
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duration ms: 228933
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by artist: Christian Li
by artist: Timothy Young
in album: Vivaldi: The Four Seasons
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genre: classical
genre: post-romantic-era
genre: violin
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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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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4691cf1fda9f711c97f87172ebbefa2fcd0832d696ee56be6cddea439247227c. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBC2000337 — a six-check JSON result.
  date published: 2026-07-07T14:41:13Z
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Thaïs: Méditation (Arr. R. Nichols for Violin and Piano)
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by artist: Christian Li
by artist: Timothy Young
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genre: classical
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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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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39625bc5e392fba6d8a8dfb7bd30b2ef623764f4a07c30675afe2b9c4d9c115c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBC2000338 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Thaïs: Méditation (Arr. R. Nichols for Violin and Piano)
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La ronde des Lutins
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by artist: Christian Li
by artist: Timothy Young
in album: Vivaldi: The Four Seasons
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-08T03:20:19Z
audio: La ronde des Lutins
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Liszt, Gluck & Others: Piano Works
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date published: 2021-06-04
track: 12 Lieder von Franz Schubert, S. 558: No. 9, Ständchen von Shakespeare
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  by artist: Sergei Rachmaninoff
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  additional property: OTSVerifyInstructions
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    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    date published: 2026-07-08T03:20:19Z
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Kreisler: The Complete Recordings, Vol. 10
type: MusicAlbum
date published: 2021-01-29

Beethoven, Mendelssohn & Others: Works
type: MusicAlbum
date published: 2020-03-06

Kreisler: The Complete Recordings, Vol. 9
type: MusicAlbum
date published: 2020-02-28

Favourite Short Pieces
type: MusicAlbum
date published: 2019-08-02

The Complete Recordings, Vol. 8 (1926-1927)
type: MusicAlbum
date published: 2019-02-08

Kreisler: The Complete Recordings, Vol. 7 (1921-1925)
type: MusicAlbum
date published: 2017-07-14

Kreisler: The Complete Original Works for Violin and Piano
type: MusicAlbum
date published: 2016-11-04
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    date published: 2026-07-31T13:04:34Z
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track: Liebesfreud
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    date published: 2026-07-08T03:20:19Z
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track: Andantino in the Style of Martini
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  subject of: OpenTimestamps Proof of Existence
  audio: Andantino in the Style of Martini
track: Gypsy Caprice
track: Aucassin and Nicolette
track: Preghiera in the Style of Martini
track: Tambourin Chinois, Op 3.
track: Cavatina
track: Sicilienne and Rigaudon in the Style of Francoeur
track: Praeludium and Allegro in the Style of Pugnani
track: Episode
track: Liebesleid

CopyrightRegisteredAt
type: PropertyValue
value: 2026-07-07T17:39:58+00:00

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0xc3a94f58237776d816a2af5a940f3e32a10d9ae1dd6c16ca759aec7010ee1244

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 957118

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/957118

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLB151600501

OTSTimestamp
type: PropertyValue
value: 2026-07-08T03:20:19Z

OTSVerifyInstructions
type: PropertyValue
value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a94f58237776d816a2af5a940f3e32a10d9ae1dd6c16ca759aec7010ee1244. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLB151600501 — a six-check JSON result.
date published: 2026-07-08T03:20:19Z

Andantino in the Style of Martini
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 114.668
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: 0.251
additional property: Energy
  type: PropertyValue
  value: 0.137
additional property: Speechiness
  type: PropertyValue
  value: 0.048
additional property: Acousticness
  type: PropertyValue
  value: 0.969
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.081
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.245
additional property: Loudness (dB)
  type: PropertyValue
  value: -22.476
additional property: Key Name
  type: PropertyValue
  value: F
additional property: Mode Name
  type: PropertyValue
  value: Major

Gypsy Caprice
type: MusicRecording
duration: PT5M4S
duration ms: 304400
explicit: false
by artist: Fritz Kreisler
by artist: Kees Hulsmann
by artist: Marian Bolt
in album: Kreisler: The Complete Original Works for Violin and Piano
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: post-romantic-era
genre: violin
isrc code: NLB151600503
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T07:13:26+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdb6c3028587debff2f37bccc8f78f700b6df967834b6bd5b3990f9289e9312cd
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/NLB151600503
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6c3028587debff2f37bccc8f78f700b6df967834b6bd5b3990f9289e9312cd. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLB151600503 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Gypsy Caprice
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 104.575
  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: 0.308
  additional property: Energy
    type: PropertyValue
    value: 0.099
  additional property: Speechiness
    type: PropertyValue
    value: 0.059
  additional property: Acousticness
    type: PropertyValue
    value: 0.963
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.003
  additional property: Liveness
    type: PropertyValue
    value: 0.162
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.225
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.786
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Aucassin and Nicolette
type: MusicRecording
duration: PT2M2S
duration ms: 122093
explicit: false
by artist: Fritz Kreisler
by artist: Kees Hulsmann
by artist: Marian Bolt
in album: Kreisler: The Complete Original Works for Violin and Piano
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: post-romantic-era
genre: violin
isrc code: NLB151600504
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T22:46:51+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5192a15decb4ec62a9a5d40c415bfd3df510e2831ee2e9a5ea22182baf217273
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/NLB151600504
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5192a15decb4ec62a9a5d40c415bfd3df510e2831ee2e9a5ea22182baf217273. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLB151600504 — a six-check JSON result.
  date published: 2026-07-08T03:22:41Z
audio: Aucassin and Nicolette
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 143.401
  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: 0.409
  additional property: Energy
    type: PropertyValue
    value: 0.078
  additional property: Speechiness
    type: PropertyValue
    value: 0.075
  additional property: Acousticness
    type: PropertyValue
    value: 0.977
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.001
  additional property: Liveness
    type: PropertyValue
    value: 0.249
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.579
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.287
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Preghiera in the Style of Martini
type: MusicRecording
duration: PT3M3S
duration ms: 183280
explicit: false
by artist: Fritz Kreisler
by artist: Kees Hulsmann
by artist: Marian Bolt
in album: Kreisler: The Complete Original Works for Violin and Piano
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: post-romantic-era
genre: violin
isrc code: NLB151600506
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T08:24:53+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0729b95ac127271d0f26f5a163f5deb1f10f5556157331a6f6264a5d71b66a5d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960370
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960370
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLB151600506
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T08:38:45Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0729b95ac127271d0f26f5a163f5deb1f10f5556157331a6f6264a5d71b66a5d. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLB151600506 — a six-check JSON result.
  date published: 2026-07-31T08:38:45Z
audio: Preghiera in the Style of Martini
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 96.706
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.263
  additional property: Energy
    type: PropertyValue
    value: 0.141
  additional property: Speechiness
    type: PropertyValue
    value: 0.048
  additional property: Acousticness
    type: PropertyValue
    value: 0.981
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.001
  additional property: Liveness
    type: PropertyValue
    value: 0.146
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.15
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.047
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Tambourin Chinois, Op 3.
type: MusicRecording
duration: PT3M44S
duration ms: 224453
explicit: false
by artist: Fritz Kreisler
by artist: Kees Hulsmann
by artist: Marian Bolt
in album: Kreisler: The Complete Original Works for Violin and Piano
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: post-romantic-era
genre: violin
isrc code: NLB151600507
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T23:46:34+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5c1f7964a490a2dae58fb41ad47ea5be64d4f561475e49720b87604de7820eef
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960485
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960485
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLB151600507
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-08-01T00:10:46Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1f7964a490a2dae58fb41ad47ea5be64d4f561475e49720b87604de7820eef. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLB151600507 — a six-check JSON result.
  date published: 2026-08-01T00:10:46Z
audio: Tambourin Chinois, Op 3.
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 150.291
  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: 0.501
  additional property: Energy
    type: PropertyValue
    value: 0.364
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
    type: PropertyValue
    value: 0.973
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.233
  additional property: Liveness
    type: PropertyValue
    value: 0.085
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.434
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.759
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Cavatina
type: MusicRecording
duration: PT4M23S
duration ms: 263253
explicit: false
by artist: Fritz Kreisler
by artist: Kees Hulsmann
by artist: Marian Bolt
in album: Kreisler: The Complete Original Works for Violin and Piano
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: post-romantic-era
genre: violin
isrc code: NLB151600527
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-08-01T03:08:39+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xede0a212dceac4038bc5e569de51d255a638a4a0c2e84c3c09b0ade16ac18613
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960503
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960503
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLB151600527
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-08-01T03:41:24Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede0a212dceac4038bc5e569de51d255a638a4a0c2e84c3c09b0ade16ac18613. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLB151600527 — a six-check JSON result.
  date published: 2026-08-01T03:41:24Z
audio: Cavatina
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 98.079
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.114
  additional property: Energy
    type: PropertyValue
    value: 0.137
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.948
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.028
  additional property: Liveness
    type: PropertyValue
    value: 0.137
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.035
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.279
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Sicilienne and Rigaudon in the Style of Francoeur
type: MusicRecording
duration: PT5M27S
duration ms: 327200
explicit: false
by artist: Fritz Kreisler
by artist: Kees Hulsmann
by artist: Marian Bolt
in album: Kreisler: The Complete Original Works for Violin and Piano
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: post-romantic-era
genre: violin
isrc code: NLB151600510
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T14:39:42+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7fc43784cac37163d20d2200c09c795b46fad74d5ecb65ea80caeebdc3f2acc6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960429
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960429
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLB151600510
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T16:07:24Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc43784cac37163d20d2200c09c795b46fad74d5ecb65ea80caeebdc3f2acc6. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLB151600510 — a six-check JSON result.
  date published: 2026-07-31T16:07:24Z
audio: Sicilienne and Rigaudon in the Style of Francoeur
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 146.148
  additional property: Musical Key
    type: PropertyValue
    value: 11
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.368
  additional property: Energy
    type: PropertyValue
    value: 0.158
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.975
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.111
  additional property: Liveness
    type: PropertyValue
    value: 0.16
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.538
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.263
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Praeludium and Allegro in the Style of Pugnani
type: MusicRecording
duration: PT6M7S
duration ms: 367453
explicit: false
by artist: Fritz Kreisler
by artist: Marian Bolt
by artist: Kees Hulsmann
in album: Kreisler: The Complete Original Works for Violin and Piano
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: post-romantic-era
genre: violin
isrc code: NLB151600534
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T21:51:13+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1b8458ffb99d4101855ca8b6c3b8e29415da133c16721ed6c0171ffd86fd773b
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/NLB151600534
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8458ffb99d4101855ca8b6c3b8e29415da133c16721ed6c0171ffd86fd773b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLB151600534 — a six-check JSON result.
  date published: 2026-07-08T03:22:41Z
audio: Praeludium and Allegro in the Style of Pugnani
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 122.513
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.444
  additional property: Energy
    type: PropertyValue
    value: 0.318
  additional property: Speechiness
    type: PropertyValue
    value: 0.056
  additional property: Acousticness
    type: PropertyValue
    value: 0.968
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.16
  additional property: Liveness
    type: PropertyValue
    value: 0.153
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.393
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.436
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Episode
type: MusicRecording
duration: PT6M22S
duration ms: 382346
explicit: false
by artist: Fritz Kreisler
by artist: Kees Hulsmann
by artist: Marian Bolt
in album: Kreisler: The Complete Original Works for Violin and Piano
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: post-romantic-era
genre: violin
isrc code: NLB151600517
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T21:10:59+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7876e07f2e7a81732d06095c3860ff6070005c22d3e2c3709f61d42bde4279e8
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/NLB151600517
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7876e07f2e7a81732d06095c3860ff6070005c22d3e2c3709f61d42bde4279e8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLB151600517 — a six-check JSON result.
  date published: 2026-07-08T03:22:41Z
audio: Episode
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 106.627
  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: 0.234
  additional property: Energy
    type: PropertyValue
    value: 0.182
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.919
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.01
  additional property: Liveness
    type: PropertyValue
    value: 0.103
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.063
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.125
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Liebesleid
type: MusicRecording
duration: PT3M39S
duration ms: 219786
explicit: false
by artist: Fritz Kreisler
by artist: Kees Hulsmann
by artist: Marian Bolt
in album: Kreisler: The Complete Original Works for Violin and Piano
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: post-romantic-era
genre: violin
isrc code: NLB151600518
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T20:59:57+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7c0bd666bebe8a3ca092eb15858a61008ec6b4297829397e770435eae95d468f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960468
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960468
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLB151600518
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T21:25:57Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0bd666bebe8a3ca092eb15858a61008ec6b4297829397e770435eae95d468f. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLB151600518 — a six-check JSON result.
  date published: 2026-07-31T21:25:57Z
audio: Liebesleid
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 145.392
  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: 0.322
  additional property: Energy
    type: PropertyValue
    value: 0.064
  additional property: Speechiness
    type: PropertyValue
    value: 0.051
  additional property: Acousticness
    type: PropertyValue
    value: 0.944
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.045
  additional property: Liveness
    type: PropertyValue
    value: 0.136
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.159
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.725
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

The Kreisler Story
type: MusicAlbum
date published: 2016-08-12
track: Liebesfreud
  type: MusicRecording
  duration: PT3M38S
  duration ms: 218440
  explicit: false
  by artist: Fritz Kreisler
  by artist: Johann Sebastian Bach
  by artist: Niccolò Paganini
  by artist: Daniel Röhn
  by artist: Paul Rivinius
  in album: The Kreisler Story
    type: MusicAlbum
    date published: 2016-08-12
  genre: classical
  genre: post-romantic-era
  genre: violin
  isrc code: DES381624003
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T14:26:32+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x97cb6b741cad8b0b726f0755001e8dfbdcf47d2e9636bb35a600942984684bda
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960418
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960418
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES381624003
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T15:20:15Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97cb6b741cad8b0b726f0755001e8dfbdcf47d2e9636bb35a600942984684bda. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES381624003 — a six-check JSON result.
    date published: 2026-07-31T15:20:15Z
  audio: Liebesfreud
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 109.141
    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: 0.478
    additional property: Energy
      type: PropertyValue
      value: 0.173
    additional property: Speechiness
      type: PropertyValue
      value: 0.052
    additional property: Acousticness
      type: PropertyValue
      value: 0.965
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.136
    additional property: Liveness
      type: PropertyValue
      value: 0.139
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.336
    additional property: Loudness (dB)
      type: PropertyValue
      value: -18.809
    additional property: Key Name
      type: PropertyValue
      value: F
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Tempo di minuetto
  type: MusicRecording
  duration: PT4M7S
  duration ms: 247880
  explicit: false
  by artist: Fritz Kreisler
  by artist: Johann Sebastian Bach
  by artist: Niccolò Paganini
  by artist: Daniel Röhn
  by artist: Paul Rivinius
  in album: The Kreisler Story
    type: MusicAlbum
    date published: 2016-08-12
  genre: classical
  genre: post-romantic-era
  genre: violin
  isrc code: DES381624007
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-30T08:02:25+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x3c31ae9db056a402e6ce3eb85739eb06ee9f64e6f923c721d760b10b102e3b5e
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960229
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960229
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES381624007
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-30T08:30:10Z
  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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c31ae9db056a402e6ce3eb85739eb06ee9f64e6f923c721d760b10b102e3b5e. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES381624007 — a six-check JSON result.
    date published: 2026-07-30T08:30:10Z
  audio: Tempo di minuetto
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 113.48
    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: 0.406
    additional property: Energy
      type: PropertyValue
      value: 0.123
    additional property: Speechiness
      type: PropertyValue
      value: 0.037
    additional property: Acousticness
      type: PropertyValue
      value: 0.97
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.015
    additional property: Liveness
      type: PropertyValue
      value: 0.132
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.332
    additional property: Loudness (dB)
      type: PropertyValue
      value: -18.615
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Schön Rosmarin
  type: MusicRecording
  duration: PT2M10S
  duration ms: 130546
  explicit: false
  by artist: Fritz Kreisler
  by artist: Johann Sebastian Bach
  by artist: Niccolò Paganini
  by artist: Daniel Röhn
  by artist: Paul Rivinius
  in album: The Kreisler Story
    type: MusicAlbum
    date published: 2016-08-12
  genre: classical
  genre: post-romantic-era
  genre: violin
  isrc code: DES381624008
  additional property: CopyrightID
  additional property: CopyrightStatus
  additional property: CopyrightRegisteredAt
  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: Schön Rosmarin
track: La Chasse
track: Moto perpetuo (Arr. By Fritz Kreisler)

CopyrightID
type: PropertyValue

CopyrightStatus
type: PropertyValue
value: registered

CopyrightRegisteredAt
type: PropertyValue
value: 2026-06-18T14:07:35+00:00

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0xd4a4b07fa9f8a41514fd7499ac9b8d3c7e5c40fcf4196eef358715832c84a9d5

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 956302

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/956302

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES381624008

OTSTimestamp
type: PropertyValue
value: 2026-07-02T03:30:09Z

OTSVerifyInstructions
type: PropertyValue
value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a4b07fa9f8a41514fd7499ac9b8d3c7e5c40fcf4196eef358715832c84a9d5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES381624008 — a six-check JSON result.
date published: 2026-07-02T03:30:09Z

Schön Rosmarin
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 110.5
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: 0.491
additional property: Energy
  type: PropertyValue
  value: 0.185
additional property: Speechiness
  type: PropertyValue
  value: 0.065
additional property: Acousticness
  type: PropertyValue
  value: 0.957
additional property: Instrumentalness
  type: PropertyValue
  value: 0.264
additional property: Liveness
  type: PropertyValue
  value: 0.059
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.587
additional property: Loudness (dB)
  type: PropertyValue
  value: -23.412
additional property: Key Name
  type: PropertyValue
  value: G
additional property: Mode Name
  type: PropertyValue
  value: Major

La Chasse
type: MusicRecording
duration: PT1M58S
duration ms: 118600
explicit: false
by artist: Fritz Kreisler
by artist: Johann Sebastian Bach
by artist: Niccolò Paganini
by artist: Daniel Röhn
by artist: Paul Rivinius
in album: The Kreisler Story
  type: MusicAlbum
  date published: 2016-08-12
genre: classical
genre: post-romantic-era
genre: violin
isrc code: DES381624012
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T19:02:45+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6ec1486066e6ee864f4b2eae0baa76b5caa199434893d5cf906615ea1fa843d0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960455
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960455
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES381624012
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T19:53:13Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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Moto perpetuo (Arr. By Fritz Kreisler)
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Fritz Kreisler Transcriptions for Violin & Piano
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From Fritz to Django
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Kreisler & Joachim: Streichquartette
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Kreisler: The Complete Recordings, Vol. 6
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Rachmaninov: Complete Works For Piano
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track: Rhapsody on a Theme of Paganini, Op. 43: Variation 13
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OTSBitcoinBlock
type: PropertyValue
value: 960108

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/960108

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077411141

OTSTimestamp
type: PropertyValue
value: 2026-07-29T13:09:35Z

OTSVerifyInstructions
type: PropertyValue
value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04718f75e1e931aad1a5449506ebf4ce9c268d224512f66069b20e5c85e994e. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077411141 — a six-check JSON result.
date published: 2026-07-29T13:09:35Z

Suite No. 1 for 2 Pianos, Op. 5: 1. Barcarolle
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 127.831
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: 0.36
additional property: Energy
  type: PropertyValue
  value: 0.073
additional property: Speechiness
  type: PropertyValue
  value: 0.04
additional property: Acousticness
  type: PropertyValue
  value: 0.987
additional property: Instrumentalness
  type: PropertyValue
  value: 0.91
additional property: Liveness
  type: PropertyValue
  value: 0.261
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.086
additional property: Loudness (dB)
  type: PropertyValue
  value: -30.111
additional property: Key Name
  type: PropertyValue
  value: G
additional property: Mode Name
  type: PropertyValue
  value: Minor

5 Morceaux de fantaisie, Op. 3: No. 2, Prelude in C-Sharp Minor
type: MusicRecording
duration: PT4M38S
duration ms: 278333
explicit: false
by artist: Sergei Rachmaninoff
by artist: Vladimir Ashkenazy
in album: Rachmaninov: Complete Works For Piano
  type: MusicAlbum
  date published: 2014-01-01
genre: classical
genre: classical-piano
genre: concerto
isrc code: GBF077540101
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3a6ca694c5e1197beb79694ed2dfe6870c25a5482c353a8ea7d9c2b6384fe063
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960160
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960160
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077540101
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T22:48:59Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6ca694c5e1197beb79694ed2dfe6870c25a5482c353a8ea7d9c2b6384fe063. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077540101 — a six-check JSON result.
  date published: 2026-07-29T22:48:59Z
audio: 5 Morceaux de fantaisie, Op. 3: No. 2, Prelude in C-Sharp Minor
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 108.014
  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: 0.423
  additional property: Energy
    type: PropertyValue
    value: 0.036
  additional property: Speechiness
    type: PropertyValue
    value: 0.076
  additional property: Acousticness
    type: PropertyValue
    value: 0.991
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.929
  additional property: Liveness
    type: PropertyValue
    value: 0.059
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.05
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.681
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Piano Concerto No. 1 in F Sharp Minor, Op. 1: 2. Andante
type: MusicRecording
duration: PT6M43S
duration ms: 403653
explicit: false
by artist: Sergei Rachmaninoff
by artist: Vladimir Ashkenazy
by artist: Royal Concertgebouw Orchestra
by artist: Bernard Haitink
in album: Rachmaninov: Complete Works For Piano
  type: MusicAlbum
  date published: 2014-01-01
genre: classical
genre: classical-piano
genre: concerto
isrc code: GBF078611082
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T09:35:00+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9d8f9798cb8e8f72df94a017ffd632d6472913e9fe48d6a65ccd3f6eb69252c0
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/GBF078611082
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8f9798cb8e8f72df94a017ffd632d6472913e9fe48d6a65ccd3f6eb69252c0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078611082 — a six-check JSON result.
  date published: 2026-07-07T16:07:00Z
audio: Piano Concerto No. 1 in F Sharp Minor, Op. 1: 2. Andante
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 96.61
  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: 0.168
  additional property: Energy
    type: PropertyValue
    value: 0.026
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.989
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.949
  additional property: Liveness
    type: PropertyValue
    value: 0.076
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.034
  additional property: Loudness (dB)
    type: PropertyValue
    value: -31.804
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Piano Concerto No. 2 in C Minor, Op. 18: 2. Adagio sostenuto
type: MusicRecording
duration: PT11M27S
duration ms: 687173
explicit: false
by artist: Sergei Rachmaninoff
by artist: Vladimir Ashkenazy
by artist: Royal Concertgebouw Orchestra
by artist: Bernard Haitink
in album: Rachmaninov: Complete Works For Piano
  type: MusicAlbum
  date published: 2014-01-01
genre: classical
genre: classical-piano
genre: concerto
isrc code: GBF078410222
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-26T20:27:43+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbc65bd85c298663fac3dda20aad49600dbf2a2c29e3f5e6ec66d1e0867c63266
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/GBF078410222
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc65bd85c298663fac3dda20aad49600dbf2a2c29e3f5e6ec66d1e0867c63266. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078410222 — a six-check JSON result.
  date published: 2026-07-02T03:55:08Z
audio: Piano Concerto No. 2 in C Minor, Op. 18: 2. Adagio sostenuto
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 107.876
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.145
  additional property: Energy
    type: PropertyValue
    value: 0.026
  additional property: Speechiness
    type: PropertyValue
    value: 0.038
  additional property: Acousticness
    type: PropertyValue
    value: 0.959
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.954
  additional property: Liveness
    type: PropertyValue
    value: 0.07
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.04
  additional property: Loudness (dB)
    type: PropertyValue
    value: -33.59
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Major

Suite No. 1 for 2 Pianos, Op. 5: 2. A Night For Love
type: MusicRecording
duration: PT6M19S
duration ms: 379986
explicit: false
by artist: Sergei Rachmaninoff
by artist: Vladimir Ashkenazy
by artist: André Previn
in album: Rachmaninov: Complete Works For Piano
  type: MusicAlbum
  date published: 2014-01-01
genre: classical
genre: classical-piano
genre: concerto
isrc code: GBF077411142
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1a576d4b5f7c0631343a9beee3937959ae9c678da8318cc15b373bb1755ff858
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960216
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960216
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077411142
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T06:39:12Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a576d4b5f7c0631343a9beee3937959ae9c678da8318cc15b373bb1755ff858. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077411142 — a six-check JSON result.
  date published: 2026-07-30T06:39:12Z
audio: Suite No. 1 for 2 Pianos, Op. 5: 2. A Night For Love
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 91.924
  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: 0.258
  additional property: Energy
    type: PropertyValue
    value: 0.077
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.987
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.893
  additional property: Liveness
    type: PropertyValue
    value: 0.068
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.033
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.157
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

10 Preludes, Op. 23: No. 1 in F-Sharp Minor (Largo)
type: MusicRecording
duration: PT4M21S
duration ms: 261333
explicit: false
by artist: Sergei Rachmaninoff
by artist: Vladimir Ashkenazy
in album: Rachmaninov: Complete Works For Piano
  type: MusicAlbum
  date published: 2014-01-01
genre: classical
genre: classical-piano
genre: concerto
isrc code: GBF077540102
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T02:47:24+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x762edc8aef6fd03d63261547228cdad2e25eca6b082a4b4d3e409f63c0aee427
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/GBF077540102
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762edc8aef6fd03d63261547228cdad2e25eca6b082a4b4d3e409f63c0aee427. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077540102 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: 10 Preludes, Op. 23: No. 1 in F-Sharp Minor (Largo)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 100.644
  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: 0.284
  additional property: Energy
    type: PropertyValue
    value: 0.004
  additional property: Speechiness
    type: PropertyValue
    value: 0.046
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.895
  additional property: Liveness
    type: PropertyValue
    value: 0.112
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.04
  additional property: Loudness (dB)
    type: PropertyValue
    value: -32.065
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Piano Concerto No. 1 in F Sharp Minor, Op. 1: 3. Allegro vivace
type: MusicRecording
duration: PT8M4S
duration ms: 484906
explicit: false
by artist: Sergei Rachmaninoff
by artist: Vladimir Ashkenazy
by artist: Royal Concertgebouw Orchestra
by artist: Bernard Haitink
in album: Rachmaninov: Complete Works For Piano
  type: MusicAlbum
  date published: 2014-01-01
genre: classical
genre: classical-piano
genre: concerto
isrc code: GBF078611083
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T20:11:18+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbc8bf7b729950731a02b2d7daee853caaf2a1f83f33131097d0acced68c7caa1
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/GBF078611083
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8bf7b729950731a02b2d7daee853caaf2a1f83f33131097d0acced68c7caa1. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078611083 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Piano Concerto No. 1 in F Sharp Minor, Op. 1: 3. Allegro vivace
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 107.268
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.275
  additional property: Energy
    type: PropertyValue
    value: 0.129
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.981
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.838
  additional property: Liveness
    type: PropertyValue
    value: 0.125
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.078
  additional property: Loudness (dB)
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Piano Concerto No. 2 in C Minor, Op. 18: 3. Allegro scherzando
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T06:56:49Z
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Suite No. 1 for 2 Pianos, Op. 5: 3. Tears
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T07:28:30Z
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Piano Concerto No. 4 in G Minor, Op. 40: 1. Allegro vivace (Alla breve)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T19:35:34Z
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Piano Concerto No. 3 in D Minor, Op. 30: 1. Allegro ma non tanto
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-22T12:33:25Z
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Suite No. 1 for 2 Pianos, Op. 5: 4. Russian Easter
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T12:45:34Z
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Piano Concerto No. 4 in G Minor, Op. 40: 2. Largo
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T21:09:47Z
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Piano Concerto No. 3 in D Minor, Op. 30: 2. Intermezzo (Adagio)
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subject of: OpenTimestamps Proof of Existence
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Suite No. 2 for 2 Pianos, Op. 17: 1. Introduction (Alla marcia)
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Piano Concerto No. 4 in G Minor, Op. 40: 3. Allegro vivace
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Piano Concerto No. 3 in D Minor, Op. 30: 3. Finale (Alla breve)
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Suite No. 2 for 2 Pianos, Op. 17: 2. Waltz (Presto)
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Suite No. 2 for 2 Pianos, Op. 17: 3. Romance (Andantino)
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Suite No. 2 for 2 Pianos, Op. 17: 4.Tarantella (Presto)
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Symphonic Dances, Op. 45 - Two pianos: 1. Non allegro
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  value: https://explorer.copyrightchains.com/tx/0xb645e42c92d739347cd292281f35d88b4145d17909484c2112973b94e259d39c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960163
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960163
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077912021
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T23:20:38Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb645e42c92d739347cd292281f35d88b4145d17909484c2112973b94e259d39c. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077912021 — a six-check JSON result.
  date published: 2026-07-29T23:20:38Z
audio: Symphonic Dances, Op. 45 - Two pianos: 1. Non allegro
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 131.964
  additional property: Musical Key
    type: PropertyValue
    value: 6
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.431
  additional property: Energy
    type: PropertyValue
    value: 0.073
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.992
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.889
  additional property: Liveness
    type: PropertyValue
    value: 0.048
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.069
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.258
  additional property: Key Name
    type: PropertyValue
    value: F#
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Symphonic Dances, Op. 45 - Two pianos: 2. Andante con moto (Tempo di Valse)
type: MusicRecording
duration: PT9M18S
duration ms: 558760
explicit: false
by artist: Sergei Rachmaninoff
by artist: Vladimir Ashkenazy
by artist: André Previn
in album: Rachmaninov: Complete Works For Piano
  type: MusicAlbum
  date published: 2014-01-01
genre: classical
genre: classical-piano
genre: concerto
isrc code: GBF077912022
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T13:00:08+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbf8054b80dcdba2f6070f64b0f10f46d1a6bc9853846cc5509b1b26d4034a8a6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960264
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960264
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077912022
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T14:36:16Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8054b80dcdba2f6070f64b0f10f46d1a6bc9853846cc5509b1b26d4034a8a6. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077912022 — a six-check JSON result.
  date published: 2026-07-30T14:36:16Z
audio: Symphonic Dances, Op. 45 - Two pianos: 2. Andante con moto (Tempo di Valse)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 103.246
  additional property: Musical Key
    type: PropertyValue
    value: 8
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.33
  additional property: Energy
    type: PropertyValue
    value: 0.055
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.993
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.929
  additional property: Liveness
    type: PropertyValue
    value: 0.082
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.052
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.518
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Major

Rhapsody on a Theme of Paganini, Op. 43: Variation 4
type: MusicRecording
duration: PT0M30S
duration ms: 30506
explicit: false
by artist: Sergei Rachmaninoff
by artist: Vladimir Ashkenazy
by artist: Philharmonia Orchestra
by artist: Bernard Haitink
in album: Rachmaninov: Complete Works For Piano
  type: MusicAlbum
  date published: 2014-01-01
genre: classical
genre: classical-piano
genre: concerto
isrc code: GBF078641905
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T02:12:09+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb8e06433357fe4c6a26760022a1304c29e0baeeeb6da2b173f2f63998b09d00d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960337
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960337
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078641905
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T02:51:48Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e06433357fe4c6a26760022a1304c29e0baeeeb6da2b173f2f63998b09d00d. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078641905 — a six-check JSON result.
  date published: 2026-07-31T02:51:48Z
audio: Rhapsody on a Theme of Paganini, Op. 43: Variation 4
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 106.675
  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: 0.24
  additional property: Energy
    type: PropertyValue
    value: 0.065
  additional property: Speechiness
    type: PropertyValue
    value: 0.036
  additional property: Acousticness
    type: PropertyValue
    value: 0.99
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.963
  additional property: Liveness
    type: PropertyValue
    value: 0.292
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.84
  additional property: Loudness (dB)
    type: PropertyValue
    value: -30.168
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Symphonic Dances, Op. 45 - Two pianos: 3. Lento assai - allegro vivace
type: MusicRecording
duration: PT13M24S
duration ms: 804226
explicit: false
by artist: Sergei Rachmaninoff
by artist: Vladimir Ashkenazy
by artist: André Previn
in album: Rachmaninov: Complete Works For Piano
  type: MusicAlbum
  date published: 2014-01-01
genre: classical
genre: classical-piano
genre: concerto
isrc code: GBF077912023
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T22:40:45+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x73c006c815549c759a30c9422bb23fe44d31a3a7ca3a681acb77194f1f853355
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960327
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960327
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077912023
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T00:26:26Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c006c815549c759a30c9422bb23fe44d31a3a7ca3a681acb77194f1f853355. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077912023 — a six-check JSON result.
  date published: 2026-07-31T00:26:26Z
audio: Symphonic Dances, Op. 45 - Two pianos: 3. Lento assai - allegro vivace
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 107.372
  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: 0.375
  additional property: Energy
    type: PropertyValue
    value: 0.169
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.989
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.904
  additional property: Liveness
    type: PropertyValue
    value: 0.071
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.07
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.909
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Rhapsody on a Theme of Paganini, Op. 43: Variation 6
type: MusicRecording
duration: PT0M58S
duration ms: 58573
explicit: false
by artist: Sergei Rachmaninoff
by artist: Vladimir Ashkenazy
by artist: Philharmonia Orchestra
by artist: Bernard Haitink
in album: Rachmaninov: Complete Works For Piano
  type: MusicAlbum
  date published: 2014-01-01
genre: classical
genre: classical-piano
genre: concerto
isrc code: GBF078641907
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T16:01:57+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0101bd8b920e450feeb1da457446ca17a2930e6c320c5d96a8ddd9be36335f64
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960138
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960138
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078641907
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T19:35:34Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0101bd8b920e450feeb1da457446ca17a2930e6c320c5d96a8ddd9be36335f64. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078641907 — a six-check JSON result.
  date published: 2026-07-29T19:35:34Z
audio: Rhapsody on a Theme of Paganini, Op. 43: Variation 6
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 134.338
  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: 0.259
  additional property: Energy
    type: PropertyValue
    value: 0.058
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.989
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.946
  additional property: Liveness
    type: PropertyValue
    value: 0.401
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.174
  additional property: Loudness (dB)
    type: PropertyValue
    value: -34.219
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Rhapsody on a Theme of Paganini, Op. 43: Variation 7
type: MusicRecording
duration: PT1M16S
duration ms: 76986
explicit: false
by artist: Sergei Rachmaninoff
by artist: Vladimir Ashkenazy
by artist: Philharmonia Orchestra
by artist: Bernard Haitink
in album: Rachmaninov: Complete Works For Piano
  type: MusicAlbum
  date published: 2014-01-01
genre: classical
genre: classical-piano
genre: concerto
isrc code: GBF078641908
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T00:19:13+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdfefea1de4d9a2b52056f8a8f373d5d83eb93478866094b388bbc0151a00b899
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960179
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960179
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078641908
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T00:39:11Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfefea1de4d9a2b52056f8a8f373d5d83eb93478866094b388bbc0151a00b899. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078641908 — a six-check JSON result.
  date published: 2026-07-30T00:39:11Z
audio: Rhapsody on a Theme of Paganini, Op. 43: Variation 7
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 94.554
  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: 0.48
  additional property: Energy
    type: PropertyValue
    value: 0.002
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.982
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.944
  additional property: Liveness
    type: PropertyValue
    value: 0.095
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.608
  additional property: Loudness (dB)
    type: PropertyValue
    value: -39.207
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Rhapsody on a Theme of Paganini, Op. 43: Variation 8
type: MusicRecording
duration: PT0M34S
duration ms: 34106
explicit: false
by artist: Sergei Rachmaninoff
by artist: Vladimir Ashkenazy
by artist: Philharmonia Orchestra
by artist: Bernard Haitink
in album: Rachmaninov: Complete Works For Piano
  type: MusicAlbum
  date published: 2014-01-01
genre: classical
genre: classical-piano
genre: concerto
isrc code: GBF078641909
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T08:39:32+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc35c9f7576b829528a9c88636a89516fd0c7ca827fa934d80bcd3f259a78f365
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957043
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957043
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078641909
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T13:52:39Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35c9f7576b829528a9c88636a89516fd0c7ca827fa934d80bcd3f259a78f365. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078641909 — a six-check JSON result.
  date published: 2026-07-07T13:52:39Z
audio: Rhapsody on a Theme of Paganini, Op. 43: Variation 8
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 155.174
  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: 0.436
  additional property: Energy
    type: PropertyValue
    value: 0.273
  additional property: Speechiness
    type: PropertyValue
    value: 0.036
  additional property: Acousticness
    type: PropertyValue
    value: 0.978
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.899
  additional property: Liveness
    type: PropertyValue
    value: 0.266
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.749
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.117
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Rhapsody on a Theme of Paganini, Op. 43: Variation 9
type: MusicRecording
duration: PT0M31S
duration ms: 31826
explicit: false
by artist: Sergei Rachmaninoff
by artist: Vladimir Ashkenazy
by artist: Philharmonia Orchestra
by artist: Bernard Haitink
in album: Rachmaninov: Complete Works For Piano
  type: MusicAlbum
  date published: 2014-01-01
genre: classical
genre: classical-piano
genre: concerto
isrc code: GBF078641910
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T12:46:50+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9794c1ead16e87944191d723f55e5aaa054d31d2694be4e0e32c9195aa61cc41
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960108
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960108
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078641910
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T13:09:35Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9794c1ead16e87944191d723f55e5aaa054d31d2694be4e0e32c9195aa61cc41. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078641910 — a six-check JSON result.
  date published: 2026-07-29T13:09:35Z
audio: Rhapsody on a Theme of Paganini, Op. 43: Variation 9
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 101.549
  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: 0.395
  additional property: Energy
    type: PropertyValue
    value: 0.233
  additional property: Speechiness
    type: PropertyValue
    value: 0.03
  additional property: Acousticness
    type: PropertyValue
    value: 0.946
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.875
  additional property: Liveness
    type: PropertyValue
    value: 0.455
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.605
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.894
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Rhapsody on a Theme of Paganini, Op. 43: Variation 10
type: MusicRecording
duration: PT0M52S
duration ms: 52733
explicit: false
by artist: Sergei Rachmaninoff
by artist: Vladimir Ashkenazy
by artist: Philharmonia Orchestra
by artist: Bernard Haitink
in album: Rachmaninov: Complete Works For Piano
  type: MusicAlbum
  date published: 2014-01-01
genre: classical
genre: classical-piano
genre: concerto
isrc code: GBF078641911
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T12:55:09+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc18c41b717457356fe73b10b1b61bff4334cea99166ad8445175e31e245e93fb
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960111
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960111
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078641911
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T13:21:01Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18c41b717457356fe73b10b1b61bff4334cea99166ad8445175e31e245e93fb. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078641911 — a six-check JSON result.
  date published: 2026-07-29T13:21:01Z
audio: Rhapsody on a Theme of Paganini, Op. 43: Variation 10
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 146.354
  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: 0.281
  additional property: Energy
    type: PropertyValue
    value: 0.171
  additional property: Speechiness
    type: PropertyValue
    value: 0.036
  additional property: Acousticness
    type: PropertyValue
    value: 0.963
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.937
  additional property: Liveness
    type: PropertyValue
    value: 0.1
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.269
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.107
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Rhapsody on a Theme of Paganini, Op. 43: Variation 11
type: MusicRecording
duration: PT1M44S
duration ms: 104533
explicit: false
by artist: Sergei Rachmaninoff
by artist: Vladimir Ashkenazy
by artist: Philharmonia Orchestra
by artist: Bernard Haitink
in album: Rachmaninov: Complete Works For Piano
  type: MusicAlbum
  date published: 2014-01-01
genre: classical
genre: classical-piano
genre: concerto
isrc code: GBF078641912
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T23:55:39+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x07681b5a0d6136b332acd16030d6352db252b0598f695396d0f753d34a42a3c9
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/GBF078641912
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07681b5a0d6136b332acd16030d6352db252b0598f695396d0f753d34a42a3c9. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078641912 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Rhapsody on a Theme of Paganini, Op. 43: Variation 11
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 107.157
  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: 0.183
  additional property: Energy
    type: PropertyValue
    value: 0.083
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.896
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.734
  additional property: Liveness
    type: PropertyValue
    value: 0.234
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.055
  additional property: Loudness (dB)
    type: PropertyValue
    value: -33.382
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Rhapsody on a Theme of Paganini, Op. 43: Variation 12
type: MusicRecording
duration: PT1M16S
duration ms: 76426
explicit: false
by artist: Sergei Rachmaninoff
by artist: Vladimir Ashkenazy
by artist: Philharmonia Orchestra
by artist: Bernard Haitink
in album: Rachmaninov: Complete Works For Piano
  type: MusicAlbum
  date published: 2014-01-01
genre: classical
genre: classical-piano
genre: concerto
isrc code: GBF078641913
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T20:45:01+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd6e3f80a476de782bc003cd9f39cd9fa64e25d09c8645e74fd7e72a29641ce01
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/GBF078641913
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e3f80a476de782bc003cd9f39cd9fa64e25d09c8645e74fd7e72a29641ce01. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078641913 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Rhapsody on a Theme of Paganini, Op. 43: Variation 12
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 104.052
  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: 0.173
  additional property: Energy
    type: PropertyValue
    value: 0.012
  additional property: Speechiness
    type: PropertyValue
    value: 0.036
  additional property: Acousticness
    type: PropertyValue
    value: 0.99
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.707
  additional property: Liveness
    type: PropertyValue
    value: 0.16
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.098
  additional property: Loudness (dB)
    type: PropertyValue
    value: -35.481
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Rhapsody on a Theme of Paganini, Op. 43: Variation 13
type: MusicRecording
duration: PT0M30S
duration ms: 30373
explicit: false
by artist: Sergei Rachmaninoff
by artist: Vladimir Ashkenazy
by artist: Philharmonia Orchestra
by artist: Bernard Haitink
in album: Rachmaninov: Complete Works For Piano
  type: MusicAlbum
  date published: 2014-01-01
genre: classical
genre: classical-piano
genre: concerto
isrc code: GBF078641914
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T14:19:22+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb659a8f12b32f11390248af90474c5b4b956bb57ab0472f4ccedb7d445fe1797
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960418
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960418
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078641914
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T15:20:15Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb659a8f12b32f11390248af90474c5b4b956bb57ab0472f4ccedb7d445fe1797. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078641914 — a six-check JSON result.
  date published: 2026-07-31T15:20:15Z
audio: Rhapsody on a Theme of Paganini, Op. 43: Variation 13
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 149.19
  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: 0.432
  additional property: Energy
    type: PropertyValue
    value: 0.156
  additional property: Speechiness
    type: PropertyValue
    value: 0.03
  additional property: Acousticness
    type: PropertyValue
    value: 0.952
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.866
  additional property: Liveness
    type: PropertyValue
    value: 0.444
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.701
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.034
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Rhapsody on a Theme of Paganini, Op. 43: Variation 14
type: MusicRecording
duration: PT0M42S
duration ms: 42560
explicit: false
by artist: Sergei Rachmaninoff
by artist: Vladimir Ashkenazy
by artist: Philharmonia Orchestra
by artist: Bernard Haitink
in album: Rachmaninov: Complete Works For Piano
  type: MusicAlbum
  date published: 2014-01-01
genre: classical
genre: classical-piano
genre: concerto
isrc code: GBF078641915
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T10:01:04+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd31b015b03c23a9dfdc7fe2d861ded479870adc9211c444c916fc7ec65e25eee
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957052
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957052
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078641915
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T14:50:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31b015b03c23a9dfdc7fe2d861ded479870adc9211c444c916fc7ec65e25eee. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078641915 — a six-check JSON result.
  date published: 2026-07-07T14:50:41Z
audio: Rhapsody on a Theme of Paganini, Op. 43: Variation 14
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 99.572
  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: 0.346
  additional property: Energy
    type: PropertyValue
    value: 0.227
  additional property: Speechiness
    type: PropertyValue
    value: 0.033
  additional property: Acousticness
    type: PropertyValue
    value: 0.948
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.888
  additional property: Liveness
    type: PropertyValue
    value: 0.138
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.444