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  track: Violin Concerto in D Major, Op. 35, TH 59: III. Finale. Allegro vivacissimo
  track: Eugene Onegin, Op. 24, TH 5 / Act II: Lensky's Aria (Arr. Auer / Orch. Rot)
  track: Six Romances, Op. 6, TH 93: VI. None but the Lonely Heart (Arr. Elman)
  track: Souvenir d'un lieu cher, Op. 42: III. Mélodie (Ed. Herrmann)
  track: Six Pieces, Op. 51, TH 143: VI. Valse sentimentale. Tempo di Valse
  track: Souvenir d'un lieu cher, Op. 42: Ia. Méditation. Introduction (Orch. Glazunov)
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  track: Valse-Scherzo, Op. 34, TH 58 (Arr. Bezekirsky)
track: Salut d'amour, Op. 12
track: La Capricieuse Op. 17
track: Suite bergamasque, L. 75: III. Clair de lune (Arr. Roelens for Violin and Piano)
track: La vida breve: Danse espagnole (Arr. Kreisler for Violin and Piano)
track: Hungarian Dance in D Minor. Allegro non assai, WoO 1/2 (Arr. Klengel for Violin and Piano)
track: Hungarian Dance in D-Flat Major. Vivace, WoO 1/6 (Arr. Klengel for Violin and Piano)
track: 3 Old Viennese Dances: II. Liebesleid
track: Six Pieces, Op. 51, TH 143: VI. Valse sentimentale. Tempo di Valse
track: Melodie from "Orfeo ed Euridice", Wq. 30 (Arr. Kreisler for Violin and Piano)

Six Romances, Op. 6, TH 93: VI. None but the Lonely Heart (Arr. Elman)
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Souvenir d'un lieu cher, Op. 42: III. Mélodie (Ed. Herrmann)
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Salut d'amour, Op. 12
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La Capricieuse Op. 17
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additional property: OTSVerifyInstructions
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  date published: 2026-07-02T11:34:59Z
audio: La Capricieuse Op. 17
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Suite bergamasque, L. 75: III. Clair de lune (Arr. Roelens for Violin and Piano)
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duration: PT4M38S
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by artist: Claude Debussy
by artist: Daniel Lozakovich
by artist: Stanislav Soloviev
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genre: classical
genre: impressionism
genre: post-romantic-era
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additional property: OTSVerifyInstructions
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  date published: 2026-06-13T13:32:09Z
audio: Suite bergamasque, L. 75: III. Clair de lune (Arr. Roelens for Violin and Piano)
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La vida breve: Danse espagnole (Arr. Kreisler for Violin and Piano)
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by artist: Daniel Lozakovich
by artist: Stanislav Soloviev
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:38:34Z
audio: La vida breve: Danse espagnole (Arr. Kreisler for Violin and Piano)
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Hungarian Dance in D Minor. Allegro non assai, WoO 1/2 (Arr. Klengel for Violin and Piano)
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by artist: Daniel Lozakovich
by artist: Stanislav Soloviev
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genre: german-romanticism
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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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  date published: 2026-07-02T11:34:59Z
audio: Hungarian Dance in D Minor. Allegro non assai, WoO 1/2 (Arr. Klengel for Violin and Piano)
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Hungarian Dance in D-Flat Major. Vivace, WoO 1/6 (Arr. Klengel for Violin and Piano)
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by artist: Daniel Lozakovich
by artist: Stanislav Soloviev
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T01:25:57Z
audio: Hungarian Dance in D-Flat Major. Vivace, WoO 1/6 (Arr. Klengel for Violin and Piano)
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3 Old Viennese Dances: II. Liebesleid
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by artist: Daniel Lozakovich
by artist: Stanislav Soloviev
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genre: classical
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additional property: OTSVerifyInstructions
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  date published: 2026-07-02T03:55:08Z
audio: 3 Old Viennese Dances: II. Liebesleid
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Melodie from "Orfeo ed Euridice", Wq. 30 (Arr. Kreisler for Violin and Piano)
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  date published: 2026-07-22T05:29:55Z
audio: Melodie from "Orfeo ed Euridice", Wq. 30 (Arr. Kreisler for Violin and Piano)
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additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 959100
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-22T05:29:55+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN962201510
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 959100
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/959100
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-22T05:29:55+00:00
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

Liveness
type: PropertyValue
value: 0.108

Valence (Positivity)
type: PropertyValue
value: 0.04

Loudness (dB)
type: PropertyValue
value: -25.738

Key Name
type: PropertyValue
value: Eb

Mode Name
type: PropertyValue
value: Major

Violin Concerto in D Major, Op. 35, TH 59: III. Finale. Allegro vivacissimo
type: MusicRecording
duration: PT10M7S
duration ms: 607506
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Daniel Lozakovich
by artist: National Philharmonic Orchestra of Russia
by artist: Vladimir Spivakov
in album: None but the Lonely Heart
  type: MusicAlbum
  date published: 2019-10-18
isrc code: DEN961901513
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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  value: 2026-06-18T18:01:17+00:00
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961901513
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a03a5af5ce882f3c622c034679ccf743394a0c603148ea1aee67e67f89a48f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961901513.
  date published: 2026-07-02T03:30:09Z
audio: Violin Concerto in D Major, Op. 35, TH 59: III. Finale. Allegro vivacissimo
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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    value: 0.953
  additional property: Instrumentalness
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    value: 0.317
  additional property: Liveness
    type: PropertyValue
    value: 0.151
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.292
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.76
  additional property: Key Name
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  additional property: Mode Name
    type: PropertyValue
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Eugene Onegin, Op. 24, TH 5 / Act II: Lensky's Aria (Arr. Auer / Orch. Rot)
type: MusicRecording
duration: PT6M38S
duration ms: 398840
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Daniel Lozakovich
by artist: National Philharmonic Orchestra of Russia
by artist: Vladimir Spivakov
in album: None but the Lonely Heart
  type: MusicAlbum
  date published: 2019-10-18
popularity: 24
isrc code: DEN961901520
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-09T18:09:22+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4b43d127f5c5b7a8cd337902701204b4be220b5c4d9ebcd9b0f9c5f8cf5ab1ef
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953520
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953520
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961901520
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b43d127f5c5b7a8cd337902701204b4be220b5c4d9ebcd9b0f9c5f8cf5ab1ef. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961901520.
  date published: 2026-06-13T13:32:09Z
audio: Eugene Onegin, Op. 24, TH 5 / Act II: Lensky's Aria (Arr. Auer / Orch. Rot)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 118.052
  additional property: Musical Key
    type: PropertyValue
    value: 4
  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: 0.192
  additional property: Energy
    type: PropertyValue
    value: 0.192
  additional property: Speechiness
    type: PropertyValue
    value: 0.047
  additional property: Acousticness
    type: PropertyValue
    value: 0.952
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.281
  additional property: Liveness
    type: PropertyValue
    value: 0.118
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.036
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.008
  additional property: Key Name
    type: PropertyValue
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  additional property: Mode Name
    type: PropertyValue
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Six Pieces, Op. 51, TH 143: VI. Valse sentimentale. Tempo di Valse
type: MusicRecording
duration: PT2M21S
duration ms: 141706
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Daniel Lozakovich
by artist: Stanislav Soloviev
in album: None but the Lonely Heart
  type: MusicAlbum
  date published: 2019-10-18
isrc code: DEN961901550
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-01T15:57:54+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb00821b7cd0475360a74eea2ee589a88e140ba188dc21e38a04a9ccbe49613e2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953513
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961901550
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:47:07Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00821b7cd0475360a74eea2ee589a88e140ba188dc21e38a04a9ccbe49613e2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961901550.
  date published: 2026-06-13T12:47:07Z
audio: Six Pieces, Op. 51, TH 143: VI. Valse sentimentale. Tempo di Valse
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 108.013
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
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    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.252
  additional property: Energy
    type: PropertyValue
    value: 0.058
  additional property: Speechiness
    type: PropertyValue
    value: 0.052
  additional property: Acousticness
    type: PropertyValue
    value: 0.953
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.016
  additional property: Liveness
    type: PropertyValue
    value: 0.072
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.039
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.184
  additional property: Key Name
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  additional property: Mode Name
    type: PropertyValue
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Souvenir d'un lieu cher, Op. 42: Ia. Méditation. Introduction (Orch. Glazunov)
type: MusicRecording
duration: PT1M1S
duration ms: 61440
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Daniel Lozakovich
by artist: National Philharmonic Orchestra of Russia
by artist: Vladimir Spivakov
in album: None but the Lonely Heart
  type: MusicAlbum
  date published: 2019-10-18
isrc code: DEN961901561
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-18T17:55:30+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc08c7a197bef11a79bc8aa50af87016f442e398c31c131d4725db6e35b53a4e2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961901561
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08c7a197bef11a79bc8aa50af87016f442e398c31c131d4725db6e35b53a4e2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961901561.
  date published: 2026-07-02T03:30:09Z
audio: Souvenir d'un lieu cher, Op. 42: Ia. Méditation. Introduction (Orch. Glazunov)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 113.823
  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: 0.115
  additional property: Energy
    type: PropertyValue
    value: 0.03
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.991
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.846
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.037
  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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Souvenir d'un lieu cher, Op. 42: Ib. Méditation (Orch. Glazunov)
type: MusicRecording
duration: PT9M30S
duration ms: 570746
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Daniel Lozakovich
by artist: National Philharmonic Orchestra of Russia
by artist: Vladimir Spivakov
in album: None but the Lonely Heart
  type: MusicAlbum
  date published: 2019-10-18
isrc code: DEN961901562
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-10T18:49:40+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb04a46c6a34bb1fd7507133f1aa5922235b3f8b4ec4f227ce5c831abae9c0b96
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953536
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961901562
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T17:25:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04a46c6a34bb1fd7507133f1aa5922235b3f8b4ec4f227ce5c831abae9c0b96. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961901562.
  date published: 2026-06-13T17:25:41Z
audio: Souvenir d'un lieu cher, Op. 42: Ib. Méditation (Orch. Glazunov)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 117.334
  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.193
  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
    value: 0.038
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.053
  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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Valse-Scherzo, Op. 34, TH 58 (Arr. Bezekirsky)
type: MusicRecording
duration: PT5M45S
duration ms: 345652
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Daniel Lozakovich
by artist: National Philharmonic Orchestra of Russia
by artist: Vladimir Spivakov
in album: None but the Lonely Heart
  type: MusicAlbum
  date published: 2019-10-18
isrc code: DEN961901570
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-18T02:54:13+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5177769a0778fb8fe569b5302642147e3b78a984b22992819a1a930c60330b2b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961901570
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5177769a0778fb8fe569b5302642147e3b78a984b22992819a1a930c60330b2b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961901570.
  date published: 2026-07-02T03:30:09Z
audio: Valse-Scherzo, Op. 34, TH 58 (Arr. Bezekirsky)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 122.158
  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
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  additional property: Acousticness
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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: 0.259
  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
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  additional property: Mode Name
    type: PropertyValue
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Six Pieces, Op. 51, TH 143: VI. Valse sentimentale. Tempo di Valse
type: MusicRecording
duration: PT2M21S
duration ms: 141706
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Daniel Lozakovich
by artist: Stanislav Soloviev
in album: Flora
  type: MusicAlbum
  date published: 2024-05-09
isrc code: DEN961901550
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-01T15:57:54+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb00821b7cd0475360a74eea2ee589a88e140ba188dc21e38a04a9ccbe49613e2
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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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Six Pieces, Op. 51, TH 143: VI. Valse sentimentale. Tempo di Valse
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by artist: Pyotr Ilyich Tchaikovsky
by artist: Daniel Lozakovich
by artist: Stanislav Soloviev
in album: Dark Academia
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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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