Irina Arkhipova
type: MusicGroup
genre: opera
description: Irina Konstantinovna Arkhipova (, 2 January 192511 February 2010) was a Soviet and Russian mezzo-soprano, and later contralto, opera singer. She sang leading roles first in Russia at the Sverdlovsk Op
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followers: 854
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album: Berg: Violin Concerto; Brahms: Tragic Overture; Alto Rhapsody; Kodály: Psalmus Hungaricus
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album: Tchaikovsky: Eugene Onegin
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  date published: 1993-01-01
  track: Eugene Onegin, Op. 24, TH.5 / Act 1: Introduction
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      date published: 1993-01-01
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-02T11:38:34Z
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  track: Eugene Onegin, Op. 24, TH.5 / Act 1: "Slikhali l vi za roschei glas nochnoi"
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-02T03:55:08Z
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  track: Eugene Onegin, Op. 24, TH.5 / Act 2: Scene and Couplets. "Uzhel ya zasluzhil ot nasmyeshku etu?"
  track: Eugene Onegin, Op. 24, TH.5 / Act 1: Peasants' Chorus and Dance. "Bolyat moyi skori nozhenki so pokhodushki" - "Uzh kak po mostu, mostochku"
  track: Eugene Onegin, Op. 24, TH.5 / Act 2: "A cette fête conviés"
  track: Eugene Onegin, Op. 24, TH.5 / Act 2: Finale. "V vashem dome! V vashem dome!"
  track: Eugene Onegin, Op. 24, TH.5 / Act 2: Introduction, Scene and Aria. "Nu, shto zhe?"
  track: Eugene Onegin, Op. 24, TH 5 / Act II: "Kuda, kuda, kuda vi udalilis"
  track: Eugene Onegin, Op. 24, TH.5 / Act 1: Scene and Arioso. "Kak shchastliv, kak shchastliv ya!" - "Ya lyublyu vas"
  track: Eugene Onegin, Op. 24, TH.5 / Act 2: Duel Scene. "A, vot oni!"
  track: Eugene Onegin, Op. 24, TH.5 / Act 1: Closing scene. "A, vot i vi!"
  track: Eugene Onegin, Op. 24, TH.5 / Act 1: Introduction and Scene. "Nu, zaboltalas ya!"
  track: Eugene Onegin, Op. 24, TH.5 / Act 1: Letter scene. "Puskai pogilabnu ya, no pryezhde"
  track: Eugene Onegin, Op. 24, TH.5 / Act 3: "Knyaginya Gremina! Smotrite!"
  track: Eugene Onegin, Op. 24, TH.5 / Act 3: Closing Scene. "O! Kak mnye tyazhelo!"
  track: Eugene Onegin, Op. 24, TH.5 / Act 1: "Kogda bi zhizn domashnim krugom"
track: All-Night Vigil, Op. 37: Psalm 103 (104), "O praise the Lord"
track: The Queen of Spades, Op. 68, Act I Scene 2: Duet "Uzh vecher"

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Eugene Onegin, Op. 24, TH.5 / Act 2: Scene and Couplets. "Uzhel ya zasluzhil ot nasmyeshku etu?"
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Eugene Onegin, Op. 24, TH.5 / Act 2: Scene and Couplets. "Uzhel ya zasluzhil ot nasmyeshku etu?"
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Eugene Onegin, Op. 24, TH.5 / Act 1: Peasants' Chorus and Dance. "Bolyat moyi skori nozhenki so pokhodushki" - "Uzh kak po mostu, mostochku"
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T06:56:49Z
audio: Eugene Onegin, Op. 24, TH.5 / Act 1: Peasants' Chorus and Dance. "Bolyat moyi skori nozhenki so pokhodushki" - "Uzh kak po mostu, mostochku"
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Eugene Onegin, Op. 24, TH.5 / Act 2: "A cette fête conviés"
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subject of: OpenTimestamps Proof of Existence
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Eugene Onegin, Op. 24, TH.5 / Act 2: Finale. "V vashem dome! V vashem dome!"
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by artist: Olga Borodina
by artist: St.Petersburg Chamber Choir
by artist: Orchestre de Paris
by artist: Semyon Bychkov
in album: Tchaikovsky: Eugene Onegin
  type: MusicAlbum
  date published: 1993-01-01
popularity: 7
isrc code: NLA509004920
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T10:49:12+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe1a4cc933bba34c1ddd5529c218683df506fcd5fd541eeb0afe4a9047d7a916d
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/NLA509004920
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a4cc933bba34c1ddd5529c218683df506fcd5fd541eeb0afe4a9047d7a916d. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA509004920.
  date published: 2026-07-07T09:18:01Z
audio: Eugene Onegin, Op. 24, TH.5 / Act 2: Finale. "V vashem dome! V vashem dome!"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 104.956
  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: 0.25
  additional property: Energy
    type: PropertyValue
    value: 0.251
  additional property: Speechiness
    type: PropertyValue
    value: 0.059
  additional property: Acousticness
    type: PropertyValue
    value: 0.981
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.002
  additional property: Liveness
    type: PropertyValue
    value: 0.072
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.189
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.287
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Eugene Onegin, Op. 24, TH.5 / Act 2: Introduction, Scene and Aria. "Nu, shto zhe?"
type: MusicRecording
duration: PT3M16S
duration ms: 196000
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Neil Shicoff
by artist: Sergei Zadvorny
by artist: Orchestre de Paris
by artist: Semyon Bychkov
in album: Tchaikovsky: Eugene Onegin
  type: MusicAlbum
  date published: 1993-01-01
popularity: 6
isrc code: NLA509004921
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T18:38:52+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd3511e931ea222115baa8195cb2296726ad2563f5d7055059d4bf8f7655fcad3
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/NLA509004921
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3511e931ea222115baa8195cb2296726ad2563f5d7055059d4bf8f7655fcad3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA509004921.
  date published: 2026-07-08T03:20:19Z
audio: Eugene Onegin, Op. 24, TH.5 / Act 2: Introduction, Scene and Aria. "Nu, shto zhe?"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 108.253
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 6
  additional property: Danceability
    type: PropertyValue
    value: 0.138
  additional property: Energy
    type: PropertyValue
    value: 0.029
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.983
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.567
  additional property: Liveness
    type: PropertyValue
    value: 0.107
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.061
  additional property: Loudness (dB)
    type: PropertyValue
    value: -31.314
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Eugene Onegin, Op. 24, TH 5 / Act II: "Kuda, kuda, kuda vi udalilis"
type: MusicRecording
duration: PT6M41S
duration ms: 401000
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Neil Shicoff
by artist: Orchestre de Paris
by artist: Semyon Bychkov
in album: Tchaikovsky: Eugene Onegin
  type: MusicAlbum
  date published: 1993-01-01
popularity: 12
isrc code: NLA509004922
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-24T11:18:38+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xaa4de6c654efc5086241ab8a5406ef2bcc5de889d4fb6bd88396b5f6c96372d2
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/NLA509004922
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4de6c654efc5086241ab8a5406ef2bcc5de889d4fb6bd88396b5f6c96372d2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA509004922.
  date published: 2026-07-02T03:55:08Z
audio: Eugene Onegin, Op. 24, TH 5 / Act II: "Kuda, kuda, kuda vi udalilis"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 106.804
  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: 0.184
  additional property: Energy
    type: PropertyValue
    value: 0.113
  additional property: Speechiness
    type: PropertyValue
    value: 0.048
  additional property: Acousticness
    type: PropertyValue
    value: 0.978
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.088
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.04
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.865
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Eugene Onegin, Op. 24, TH.5 / Act 1: Scene and Arioso. "Kak shchastliv, kak shchastliv ya!" - "Ya lyublyu vas"
type: MusicRecording
duration: PT5M40S
duration ms: 340266
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Dmitri Hvorostovsky
by artist: Nuccia Focile
by artist: Neil Shicoff
by artist: Olga Borodina
by artist: Orchestre de Paris
by artist: Semyon Bychkov
in album: Tchaikovsky: Eugene Onegin
  type: MusicAlbum
  date published: 1993-01-01
popularity: 9
isrc code: NLA509004908
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T05:18:24+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9d92bbf1028efa7623abf543371973bb45d2d6861015c95c32b82405bd3b5fb0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956894
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956894
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA509004908
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T07:53:57Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d92bbf1028efa7623abf543371973bb45d2d6861015c95c32b82405bd3b5fb0. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA509004908.
  date published: 2026-07-06T07:53:57Z
audio: Eugene Onegin, Op. 24, TH.5 / Act 1: Scene and Arioso. "Kak shchastliv, kak shchastliv ya!" - "Ya lyublyu vas"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 111.09
  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: 0.251
  additional property: Energy
    type: PropertyValue
    value: 0.098
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.978
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.001
  additional property: Liveness
    type: PropertyValue
    value: 0.076
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.095
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.213
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Major

Eugene Onegin, Op. 24, TH.5 / Act 2: Duel Scene. "A, vot oni!"
type: MusicRecording
duration: PT5M55S
duration ms: 355000
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Dmitri Hvorostovsky
by artist: Neil Shicoff
by artist: Sergei Zadvorny
by artist: Orchestre de Paris
by artist: Semyon Bychkov
in album: Tchaikovsky: Eugene Onegin
  type: MusicAlbum
  date published: 1993-01-01
popularity: 6
isrc code: NLA509004923
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T09:30:40+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfc2a7aed2a58ed8cbb8ad9d44b689880b988e34e7d0f2e263ab562b8f27061a2
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/NLA509004923
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-21T21:20:20Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2a7aed2a58ed8cbb8ad9d44b689880b988e34e7d0f2e263ab562b8f27061a2. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:20:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA509004923.
  date published: 2026-07-21T21:20:20Z
audio: Eugene Onegin, Op. 24, TH.5 / Act 2: Duel Scene. "A, vot oni!"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 103.698
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 6
  additional property: Danceability
    type: PropertyValue
    value: 0.207
  additional property: Energy
    type: PropertyValue
    value: 0.099
  additional property: Speechiness
    type: PropertyValue
    value: 0.056
  additional property: Acousticness
    type: PropertyValue
    value: 0.98
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.001
  additional property: Liveness
    type: PropertyValue
    value: 0.098
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.076
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.683
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Eugene Onegin, Op. 24, TH.5 / Act 1: Closing scene. "A, vot i vi!"
type: MusicRecording
duration: PT2M39S
duration ms: 159733
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Dmitri Hvorostovsky
by artist: Neil Shicoff
by artist: Sarah Walker
by artist: Irina Arkhipova
by artist: Orchestre de Paris
by artist: Semyon Bychkov
in album: Tchaikovsky: Eugene Onegin
  type: MusicAlbum
  date published: 1993-01-01
popularity: 7
isrc code: NLA509004909
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T08:40:52+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x81fa27c022521ffc6faca11db38cf241850710ed4e2a01e79242a31790296e67
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957046
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957046
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA509004909
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T14:04:01Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fa27c022521ffc6faca11db38cf241850710ed4e2a01e79242a31790296e67. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA509004909.
  date published: 2026-07-07T14:04:01Z
audio: Eugene Onegin, Op. 24, TH.5 / Act 1: Closing scene. "A, vot i vi!"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 103.354
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.214
  additional property: Energy
    type: PropertyValue
    value: 0.038
  additional property: Speechiness
    type: PropertyValue
    value: 0.058
  additional property: Acousticness
    type: PropertyValue
    value: 0.977
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.236
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.086
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.74
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Eugene Onegin, Op. 24, TH.5 / Act 1: Introduction and Scene. "Nu, zaboltalas ya!"
type: MusicRecording
duration: PT8M26S
duration ms: 506000
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Nuccia Focile
by artist: Irina Arkhipova
by artist: Orchestre de Paris
by artist: Semyon Bychkov
in album: Tchaikovsky: Eugene Onegin
  type: MusicAlbum
  date published: 1993-01-01
popularity: 7
isrc code: NLA509004910
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T08:55:36+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa57480ab18cd9b769e22cf40de285db7f25144cb69e69514783d2424019e35e2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957075
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957075
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA509004910
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T18:50:38Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57480ab18cd9b769e22cf40de285db7f25144cb69e69514783d2424019e35e2. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA509004910.
  date published: 2026-07-07T18:50:38Z
audio: Eugene Onegin, Op. 24, TH.5 / Act 1: Introduction and Scene. "Nu, zaboltalas ya!"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 105.022
  additional property: Musical Key
    type: PropertyValue
    value: 11
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.233
  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
    value: 0.048
  additional property: Acousticness
    type: PropertyValue
    value: 0.971
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.12
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.038
  additional property: Loudness (dB)
    type: PropertyValue
    value: -31.558
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Eugene Onegin, Op. 24, TH.5 / Act 1: Letter scene. "Puskai pogilabnu ya, no pryezhde"
type: MusicRecording
duration: PT13M17S
duration ms: 797000
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Nuccia Focile
by artist: Orchestre de Paris
by artist: Semyon Bychkov
in album: Tchaikovsky: Eugene Onegin
  type: MusicAlbum
  date published: 1993-01-01
popularity: 30
isrc code: NLA509004911
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-07T07:00:48+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x11366f01751e0b876572f4dd3e5b49569ddad066eac395addf08949a7697412e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953536
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/NLA509004911
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 0x11366f01751e0b876572f4dd3e5b49569ddad066eac395addf08949a7697412e. 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/NLA509004911.
  date published: 2026-06-13T17:25:41Z
audio: Eugene Onegin, Op. 24, TH.5 / Act 1: Letter scene. "Puskai pogilabnu ya, no pryezhde"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 104.794
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
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    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.233
  additional property: Energy
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    value: 0.064
  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
    value: 0.973
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.6
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.039
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.24
  additional property: Key Name
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    value: C#
  additional property: Mode Name
    type: PropertyValue
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Eugene Onegin, Op. 24, TH.5 / Act 3: "Knyaginya Gremina! Smotrite!"
type: MusicRecording
duration: PT2M55S
duration ms: 175666
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Dmitri Hvorostovsky
by artist: Nuccia Focile
by artist: Alexander Anisimov
by artist: St.Petersburg Chamber Choir
by artist: Orchestre de Paris
by artist: Semyon Bychkov
in album: Tchaikovsky: Eugene Onegin
  type: MusicAlbum
  date published: 1993-01-01
popularity: 5
isrc code: NLA509004926
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T23:35:26+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x56d218cd68cb4723968851ccdf2b402108cb8d40a916f33d3741ec007405b771
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/NLA509004926
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d218cd68cb4723968851ccdf2b402108cb8d40a916f33d3741ec007405b771. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA509004926.
  date published: 2026-07-08T03:20:19Z
audio: Eugene Onegin, Op. 24, TH.5 / Act 3: "Knyaginya Gremina! Smotrite!"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 120.145
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.298
  additional property: Energy
    type: PropertyValue
    value: 0.123
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.983
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.164
  additional property: Liveness
    type: PropertyValue
    value: 0.165
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.27
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.569
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major

Eugene Onegin, Op. 24, TH.5 / Act 3: Closing Scene. "O! Kak mnye tyazhelo!"
type: MusicRecording
duration: PT3M41S
duration ms: 221000
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Dmitri Hvorostovsky
by artist: Nuccia Focile
by artist: Orchestre de Paris
by artist: Semyon Bychkov
in album: Tchaikovsky: Eugene Onegin
  type: MusicAlbum
  date published: 1993-01-01
popularity: 5
isrc code: NLA509004929
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T18:17:31+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa56f1e9816169aaf1656ad858d8bb84f6d3caf911edac3c9360e1ac0cd0e5195
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/NLA509004929
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56f1e9816169aaf1656ad858d8bb84f6d3caf911edac3c9360e1ac0cd0e5195. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA509004929.
  date published: 2026-07-07T09:18:01Z
audio: Eugene Onegin, Op. 24, TH.5 / Act 3: Closing Scene. "O! Kak mnye tyazhelo!"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 123.197
  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: 0.313
  additional property: Energy
    type: PropertyValue
    value: 0.04
  additional property: Speechiness
    type: PropertyValue
    value: 0.046
  additional property: Acousticness
    type: PropertyValue
    value: 0.981
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.265
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.071
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.526
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Eugene Onegin, Op. 24, TH.5 / Act 1: "Kogda bi zhizn domashnim krugom"
type: MusicRecording
duration: PT4M16S
duration ms: 256866
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Dmitri Hvorostovsky
by artist: Nuccia Focile
by artist: Orchestre de Paris
by artist: Semyon Bychkov
in album: Tchaikovsky: Eugene Onegin
  type: MusicAlbum
  date published: 1993-01-01
popularity: 14
isrc code: NLA509004915
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-23T02:24:36+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x27209a06c3b1c91bb8a89fefaf9dd85d60a0c4a447aba2a5853d2f0c11925e28
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/NLA509004915
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27209a06c3b1c91bb8a89fefaf9dd85d60a0c4a447aba2a5853d2f0c11925e28. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA509004915.
  date published: 2026-07-02T03:55:08Z
audio: Eugene Onegin, Op. 24, TH.5 / Act 1: "Kogda bi zhizn domashnim krugom"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 104.072
  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: 0.208
  additional property: Energy
    type: PropertyValue
    value: 0.093
  additional property: Speechiness
    type: PropertyValue
    value: 0.051
  additional property: Acousticness
    type: PropertyValue
    value: 0.991
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.011
  additional property: Liveness
    type: PropertyValue
    value: 0.075
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.058
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.246
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

All-Night Vigil, Op. 37: Psalm 103 (104), "O praise the Lord"
type: MusicRecording
duration: PT5M26S
duration ms: 326701
explicit: false
by artist: Sergei Rachmaninoff
by artist: Irina Arkhipova
by artist: State Symphony Capella of Russia
by artist: Valery Polyansky
in album: Rachmaninoff: All-Night Vigil, Op. 37
  type: MusicAlbum
  date published: 2015-11-01
popularity: 10
genre: classical
genre: classical-piano
isrc code: USB8U1521548
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-22T08:50:05+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfce2533b3db5353331b6783c534d43575144cd8300f0215b066e4c937785c77c
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/USB8U1521548
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce2533b3db5353331b6783c534d43575144cd8300f0215b066e4c937785c77c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1521548.
  date published: 2026-07-02T03:55:08Z
audio: All-Night Vigil, Op. 37: Psalm 103 (104), "O praise the Lord"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 108.32
  additional property: Musical Key
    type: PropertyValue
    value: 11
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.1
  additional property: Energy
    type: PropertyValue
    value: 0.048
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
    type: PropertyValue
    value: 0.99
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.78
  additional property: Liveness
    type: PropertyValue
    value: 0.112
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.038
  additional property: Loudness (dB)
    type: PropertyValue
    value: -33.653
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Major

The Queen of Spades, Op. 68, Act I Scene 2: Duet "Uzh vecher"
type: MusicRecording
duration: PT4M21S
duration ms: 261079
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Irina Arkhipova
by artist: Tamara Milashkina
by artist: Boris Khaikin
by artist: Bolshoi Theatre Orchestra
in album: Tchaikovsky: The Queen of Spades, Op. 68
  type: MusicAlbum
  date published: 2013-01-01
isrc code: UK2Y21800859
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T09:50:35+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0c05cb1f680fd9c4cee6eaa282cf1d1acdaa2e5dc5cebf6a0e14ca12d9e8e85f
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957050
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK2Y21800859
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T14:41:13Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c05cb1f680fd9c4cee6eaa282cf1d1acdaa2e5dc5cebf6a0e14ca12d9e8e85f. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK2Y21800859.
  date published: 2026-07-07T14:41:13Z
audio: The Queen of Spades, Op. 68, Act I Scene 2: Duet "Uzh vecher"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 110.346
  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: 0.18
  additional property: Energy
    type: PropertyValue
    value: 0.148
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.989
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.059
  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Mode Name
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