Иван Петров
type: MusicGroup
genre: opera
popularity: 3
followers: 46
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additional property: OTSVerifyInstructions
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  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 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. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-22T02:53:59Z
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album: Borodin: Prince Igor
  type: MusicAlbum
  date published: 2012
  track: Prince Igor, Prologue: Introduction "Knyzya, pora nam vystupat"
  track: Prince Igor, Prologue: Introduction "Pust pridut knyagini i boyaryni"
  track: Prince Igor, Act II: Prince Igor's Aria "Ni sna, ni otdykha"
  track: Prince Igor, Act I Scene 1: Recitative "Knyazyu Galitskomu slava!"
    type: MusicRecording
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    by artist: Alexander Borodin
    by artist: Артур Эйзен
    by artist: хор Большого театра
    by artist: Mark Ermler
    by artist: Оркестр Большого театра
    in album: Borodin: Prince Igor
      type: MusicAlbum
      date published: 2012
    popularity: 1
    genre: classical
    genre: late-romantic-era
    genre: early-modern-classical
    genre: russian-romanticism
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    additional property: OTSVerifyInstructions
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      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-08T03:53:27Z
    audio: Prince Igor, Act I Scene 1: Recitative "Knyazyu Galitskomu slava!"
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  track: Prince Igor, Act I Scene 1: Scene "Stoy, rebyata, slukhay!"
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    duration: PT0M50S
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    by artist: Alexander Borodin
    by artist: Konstantin Baskov
    by artist: Valery Yaroslavtsev
    by artist: хор Большого театра
    by artist: Mark Ermler
    by artist: Оркестр Большого театра
    in album: Borodin: Prince Igor
      type: MusicAlbum
      date published: 2012
    popularity: 1
    genre: classical
    genre: late-romantic-era
    genre: early-modern-classical
    genre: russian-romanticism
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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
    audio: Prince Igor, Act I Scene 1: Scene "Stoy, rebyata, slukhay!"
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  track: Prince Igor, Act II: Polovtsian Dance with Chorus "Uletay na krylyakh vetra"
  track: Prince Igor, Act I Scene 2: Yaroslavna's Arioso "Nemalo vremeni proshlo"
  track: Prince Igor, Act I: Finale "Dobro pozhalovat, boyare"
  track: Prince Igor, Prologue: Introduction "Idem na bran s vragom Rusi!"
album: Tchaikovsky: Eugene Onegin, Op. 24
album: Bolshoi. The Best of Melodiya
album: Сны вечности
album: Mussorgsky: Boris Godunov
album: Сказка о царе Салтане
album: Руслан и Людмила
album: Prokofiev: Cantata for the 20th Anniversary of the October Revolution, Op. 74 & Scythian Suite, Op. 20
album: До твоето дясно рамо

Prince Igor, Prologue: Introduction "Knyzya, pora nam vystupat"
type: MusicRecording
duration: PT5M50S
duration ms: 350394
explicit: false
by artist: Alexander Borodin
by artist: Иван Петров
by artist: Артур Эйзен
by artist: Владимир Атлантов
by artist: Valery Yaroslavtsev
by artist: Konstantin Baskov
by artist: хор Большого театра
by artist: Mark Ermler
by artist: Оркестр Большого театра
in album: Borodin: Prince Igor
  type: MusicAlbum
  date published: 2012
popularity: 2
genre: classical
genre: late-romantic-era
genre: early-modern-classical
genre: russian-romanticism
isrc code: UK2Y21602940
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Prince Igor, Prologue: Introduction "Knyzya, pora nam vystupat"
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Prince Igor, Prologue: Introduction "Pust pridut knyagini i boyaryni"
type: MusicRecording
duration: PT8M8S
duration ms: 488481
explicit: false
by artist: Alexander Borodin
by artist: Иван Петров
by artist: Tatiana Tugarinova
by artist: Владимир Атлантов
by artist: Артур Эйзен
by artist: хор Большого театра
by artist: Mark Ermler
by artist: Оркестр Большого театра
in album: Borodin: Prince Igor
  type: MusicAlbum
  date published: 2012
popularity: 2
genre: classical
genre: late-romantic-era
genre: early-modern-classical
genre: russian-romanticism
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  date published: 2026-07-08T03:53:27Z
audio: Prince Igor, Prologue: Introduction "Pust pridut knyagini i boyaryni"
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Prince Igor, Act II: Prince Igor's Aria "Ni sna, ni otdykha"
type: MusicRecording
duration: PT6M51S
duration ms: 411531
explicit: false
by artist: Alexander Borodin
by artist: Иван Петров
by artist: Mark Ermler
by artist: Оркестр Большого театра
in album: Borodin: Prince Igor
  type: MusicAlbum
  date published: 2012
popularity: 1
genre: classical
genre: late-romantic-era
genre: early-modern-classical
genre: russian-romanticism
isrc code: UK2Y21602960
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  date published: 2026-07-08T08:56:20Z
audio: Prince Igor, Act II: Prince Igor's Aria "Ni sna, ni otdykha"
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Prince Igor, Prologue: Introduction "Idem na bran s vragom Rusi!"
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duration: PT2M27S
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by artist: Alexander Borodin
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by artist: хор Большого театра
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popularity: 2
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  date published: 2026-07-31T10:20:10Z
audio: Prince Igor, Prologue: Introduction "Idem na bran s vragom Rusi!"
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Eugene Onegin, Op. 24, Act III Scene 1: No. 20c, Scene "Knyaginya Gremina!"
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duration: PT2M21S
duration ms: 141419
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by artist: Евгений Белоусов
by artist: Galina Vishnevskaya
by artist: Иван Петров
by artist: хор Большого театра
by artist: Boris Khaikin
by artist: Оркестр Большого театра
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  date published: 2026-08-01T01:44:32Z
audio: Eugene Onegin, Op. 24, Act III Scene 1: No. 20c, Scene "Knyaginya Gremina!"
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Eugene Onegin, Op. 24, Act III Scene 1: No. 20d, Gremin's Aria "Lyubvi vse vozrasty pokorny"
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duration: PT5M41S
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by artist: Иван Петров
by artist: Boris Khaikin
by artist: Оркестр Большого театра
in album: Tchaikovsky: Eugene Onegin, Op. 24
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genre: opera
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  date published: 2026-07-31T15:59:18Z
audio: Eugene Onegin, Op. 24, Act III Scene 1: No. 20d, Gremin's Aria "Lyubvi vse vozrasty pokorny"
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Eugene Onegin, Op. 24, Act III Scene 1: No. 20e, Scene "Itak, poydem, tebya predstavlyu ya"
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duration: PT1M13S
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by artist: Иван Петров
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by artist: Евгений Белоусов
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  date published: 2026-07-31T15:27:29Z
audio: Eugene Onegin, Op. 24, Act III Scene 1: No. 20e, Scene "Itak, poydem, tebya predstavlyu ya"
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Сказка о царе Салтане: У лукоморья дуб зелёный
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  date published: 2026-07-30T18:23:33Z
audio: Сказка о царе Салтане: У лукоморья дуб зелёный
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Danceability
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Prince Igor, Act II: Polovtsian Dance with Chorus "Uletay na krylyakh vetra"
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by artist: Оркестр Большого театра
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  type: MusicAlbum
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popularity: 6
genre: classical
genre: late-romantic-era
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  date published: 2026-07-07T11:02:43Z
audio: Prince Igor, Act II: Polovtsian Dance with Chorus "Uletay na krylyakh vetra"
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Prince Igor, Act I Scene 2: Yaroslavna's Arioso "Nemalo vremeni proshlo"
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popularity: 2
genre: classical
genre: late-romantic-era
genre: early-modern-classical
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    date published: 2026-07-08T03:22:41Z
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    date published: 2026-07-08T03:53:27Z
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track: Eugene Onegin, Op. 24, Act II Scene 1: No. 14b, Scene and Triquet's Couplets "Kakoy prekrasniy etot den"
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track: Eugene Onegin, Op. 24, Act I Scene 1: No. 3b, Olga's Arioso "Ya ne sposobna k grusti tomnoy"
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track: Eugene Onegin, Op. 24, Act III Scene 1: No. 20d, Gremin's Aria "Lyubvi vse vozrasty pokorny"
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e017f99d73f6e06770daddbd437fe08d571d92e094d3dd7c1bb35142e42fbde. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK2Y21309067.
  date published: 2026-07-08T08:56:20Z
audio: Eugene Onegin, Op. 24, Act I Scene 1: No. 2c, Choir "Uzh kak po mostu-mostochku"
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  additional property: Musical Key
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  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.528
  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
    value: 0.035
  additional property: Acousticness
    type: PropertyValue
    value: 0.932
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.303
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.625
  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.741
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Eugene Onegin, Op. 24, Act II Scene 1: No. 15a, Mazurka
type: MusicRecording
duration: PT1M19S
duration ms: 79486
explicit: false
by artist: Георгий Панков
by artist: Boris Khaikin
by artist: Оркестр Большого театра
in album: Tchaikovsky: Eugene Onegin, Op. 24
  type: MusicAlbum
  date published: 2011-01-01
isrc code: UK2Y21801586
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T13:12:57+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8a6f5f8b598b8d9d983d9ae063d0b77c4378571154f1e927faa9e9503dd61d39
additional property: OTSHash
additional property: OTSBitcoinBlock
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  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/UK2Y21801586
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 0x8a6f5f8b598b8d9d983d9ae063d0b77c4378571154f1e927faa9e9503dd61d39. 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/UK2Y21801586.
  date published: 2026-07-08T03:20:19Z
audio: Eugene Onegin, Op. 24, Act II Scene 1: No. 15a, Mazurka
  type: AudioObject
  additional property: Tempo (BPM)
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    value: 170.089
  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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    value: 0.942
  additional property: Loudness (dB)
    type: PropertyValue
    value: -17.526
  additional property: Key Name
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  additional property: Mode Name
    type: PropertyValue
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Eugene Onegin, Op. 24, Act I Scene 1: No. 3a, Scene "Kak ya lyublyu pod zvuki pesen"
type: MusicRecording
duration: PT0M47S
duration ms: 47000
explicit: false
by artist: Galina Vishnevskaya
by artist: Лариса Авдеева
by artist: Boris Khaikin
by artist: Оркестр Большого театра
in album: Tchaikovsky: Eugene Onegin, Op. 24
  type: MusicAlbum
  date published: 2011-01-01
isrc code: UK2Y21309068
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T10:13:20+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd2b6613fc1a07f447032c98a7b3d65f31be22ed97aceb649d4e0bd027cfbf72b
additional property: OTSHash
additional property: OTSBitcoinBlock
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  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/UK2Y21309068
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b6613fc1a07f447032c98a7b3d65f31be22ed97aceb649d4e0bd027cfbf72b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK2Y21309068.
  date published: 2026-07-08T03:22:41Z
audio: Eugene Onegin, Op. 24, Act I Scene 1: No. 3a, Scene "Kak ya lyublyu pod zvuki pesen"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 101.783
  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: 0.442
  additional property: Energy
    type: PropertyValue
    value: 0.148
  additional property: Speechiness
    type: PropertyValue
    value: 0.073
  additional property: Acousticness
    type: PropertyValue
    value: 0.846
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.201
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.377
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.096
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Eugene Onegin, Op. 24, Act II Scene 1: No. 15b, Scene "Ty ne tantsuesh, Lenskiy?"
type: MusicRecording
duration: PT3M15S
duration ms: 195487
explicit: false
by artist: Евгений Белоусов
by artist: Sergei Lemeshev
by artist: Валентина Петрова
by artist: хор Большого театра
by artist: Boris Khaikin
by artist: Оркестр Большого театра
in album: Tchaikovsky: Eugene Onegin, Op. 24
  type: MusicAlbum
  date published: 2011-01-01
isrc code: UK2Y21801587
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T16:41:37+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xde70d2404423c0755f730759a97bb15a277c6a24d1fb35af0bb41493ce030d83
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/UK2Y21801587
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde70d2404423c0755f730759a97bb15a277c6a24d1fb35af0bb41493ce030d83. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK2Y21801587.
  date published: 2026-07-08T03:22:41Z
audio: Eugene Onegin, Op. 24, Act II Scene 1: No. 15b, Scene "Ty ne tantsuesh, Lenskiy?"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 163.477
  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: 0.434
  additional property: Energy
    type: PropertyValue
    value: 0.224
  additional property: Speechiness
    type: PropertyValue
    value: 0.098
  additional property: Acousticness
    type: PropertyValue
    value: 0.958
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.576
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.417
  additional property: Loudness (dB)
    type: PropertyValue
    value: -17.862
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Eugene Onegin, Op. 24, Act I Scene 1: No. 3b, Olga's Arioso "Ya ne sposobna k grusti tomnoy"
type: MusicRecording
duration: PT2M33S
duration ms: 153826
explicit: false
by artist: Лариса Авдеева
by artist: Boris Khaikin
by artist: Оркестр Большого театра
in album: Tchaikovsky: Eugene Onegin, Op. 24
  type: MusicAlbum
  date published: 2011-01-01
isrc code: UK2Y21309069
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T02:56:55+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xad85d55b4e4489bf93c2373cb17dbb40945aa12b6b29ef7a3003c96e18f3a074
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 957124
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957124
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK2Y21309069
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:53:27Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad85d55b4e4489bf93c2373cb17dbb40945aa12b6b29ef7a3003c96e18f3a074. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK2Y21309069.
  date published: 2026-07-08T03:53:27Z
audio: Eugene Onegin, Op. 24, Act I Scene 1: No. 3b, Olga's Arioso "Ya ne sposobna k grusti tomnoy"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 142.196
  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: 0.424
  additional property: Energy
    type: PropertyValue
    value: 0.211
  additional property: Speechiness
    type: PropertyValue
    value: 0.058
  additional property: Acousticness
    type: PropertyValue
    value: 0.935
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.139
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.179
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.31
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Eugene Onegin, Op. 24, Act I Scene 1: No. 4, Scene "Nu ty, moya vostrushka"
type: MusicRecording
duration: PT2M54S
duration ms: 174657
explicit: false
by artist: Валентина Петрова
by artist: Galina Vishnevskaya
by artist: Лариса Авдеева
by artist: хор Большого театра
by artist: Boris Khaikin
by artist: Оркестр Большого театра
in album: Tchaikovsky: Eugene Onegin, Op. 24
  type: MusicAlbum
  date published: 2011-01-01
isrc code: UK2Y21309070
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T13:05:37+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe39cd7f27c8e65530250797d83a4718948e06a1c92e9fb1e89de908ec5cef325
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/UK2Y21309070
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 0xe39cd7f27c8e65530250797d83a4718948e06a1c92e9fb1e89de908ec5cef325. 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/UK2Y21309070.
  date published: 2026-07-08T03:20:19Z
audio: Eugene Onegin, Op. 24, Act I Scene 1: No. 4, Scene "Nu ty, moya vostrushka"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 97.074
  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: 0.518
  additional property: Energy
    type: PropertyValue
    value: 0.106
  additional property: Speechiness
    type: PropertyValue
    value: 0.257
  additional property: Acousticness
    type: PropertyValue
    value: 0.972
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.321
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.264
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.944
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Eugene Onegin, Op. 24, Act II Scene 2: No. 18a, Duel Scene "A, vot oni!"
type: MusicRecording
duration: PT1M55S
duration ms: 115763
explicit: false
by artist: Игорь Михайлов
by artist: Евгений Белоусов
by artist: Boris Khaikin
by artist: Оркестр Большого театра
in album: Tchaikovsky: Eugene Onegin, Op. 24
  type: MusicAlbum
  date published: 2011-01-01
isrc code: UK2Y21801591
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T13:31:21+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xaa17c2386465db406f8c8bace43b13b28e774cc8da39af0725a0881d74509c54
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 957124
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957124
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK2Y21801591
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:53:27Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa17c2386465db406f8c8bace43b13b28e774cc8da39af0725a0881d74509c54. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK2Y21801591.
  date published: 2026-07-08T03:53:27Z
audio: Eugene Onegin, Op. 24, Act II Scene 2: No. 18a, Duel Scene "A, vot oni!"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 165.462
  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: 0.384
  additional property: Energy
    type: PropertyValue
    value: 0.101
  additional property: Speechiness
    type: PropertyValue
    value: 0.055
  additional property: Acousticness
    type: PropertyValue
    value: 0.962
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.11
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.301
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.773
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Eugene Onegin, Op. 24, Act II Scene 2: No. 18b, Duel Scene "Vragi! Davno li drug ot druga?"
type: MusicRecording
duration: PT3M41S
duration ms: 221236
explicit: false
by artist: Евгений Белоусов
by artist: Sergei Lemeshev
by artist: Игорь Михайлов
by artist: Boris Khaikin
by artist: Оркестр Большого театра
in album: Tchaikovsky: Eugene Onegin, Op. 24
  type: MusicAlbum
  date published: 2011-01-01
isrc code: UK2Y21801592
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f37bd91ae8659090fbc3f71fd19742e56e04c889683c85d959b81c21886985. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK2Y21801592.
  date published: 2026-07-08T03:22:41Z
audio: Eugene Onegin, Op. 24, Act II Scene 2: No. 18b, Duel Scene "Vragi! Davno li drug ot druga?"
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Eugene Onegin, Op. 24, Act III Scene 1: No. 19, Polonaise
type: MusicRecording
duration: PT4M24S
duration ms: 264706
explicit: false
by artist: Boris Khaikin
by artist: Оркестр Большого театра
in album: Tchaikovsky: Eugene Onegin, Op. 24
  type: MusicAlbum
  date published: 2011-01-01
genre: opera
isrc code: UK2Y21801593
additional property: CopyrightID
additional property: CopyrightStatus
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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
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9eb9cbe6c1095d61ebedbc995fc5b3cc3557b3ae6aaff9a36808050ec48b72e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK2Y21801593.
  date published: 2026-07-08T08:56:20Z
audio: Eugene Onegin, Op. 24, Act III Scene 1: No. 19, Polonaise
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Eugene Onegin, Op. 24, Act I Scene 1: No. 7, Final Scene
type: MusicRecording
duration: PT2M41S
duration ms: 161986
explicit: false
by artist: Валентина Петрова
by artist: Евгения Вербицкая
by artist: Sergei Lemeshev
by artist: Евгений Белоусов
by artist: Boris Khaikin
by artist: Оркестр Большого театра
in album: Tchaikovsky: Eugene Onegin, Op. 24
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  date published: 2011-01-01
isrc code: UK2Y21309075
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/UK2Y21309075
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T08:56:20Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc9c0949e85ab0b17308c500f28aca73644d7ba76ed82633b9c816ba7f91893. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK2Y21309075.
  date published: 2026-07-08T08:56:20Z
audio: Eugene Onegin, Op. 24, Act I Scene 1: No. 7, Final Scene
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Eugene Onegin, Op. 24, Act III Scene 1: No. 20a, Scene "I zdes, mne skuchno!"
type: MusicRecording
duration: PT1M59S
duration ms: 119514
explicit: false
by artist: Евгений Белоусов
by artist: Boris Khaikin
by artist: Оркестр Большого театра
in album: Tchaikovsky: Eugene Onegin, Op. 24
  type: MusicAlbum
  date published: 2011-01-01
isrc code: UK2Y21801594
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69fcfa99069fdeb7f0ab2fc6ae0b1e1309e1b88b11682f4ffcd7f48ce22bacef. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK2Y21801594.
  date published: 2026-07-08T03:22:41Z
audio: Eugene Onegin, Op. 24, Act III Scene 1: No. 20a, Scene "I zdes, mne skuchno!"
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Danceability
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Eugene Onegin, Op. 24, Act I Scene 2: No. 9, Tatiana's Letter Scene "Puskay pogibnu ya"
type: MusicRecording
duration: PT12M46S
duration ms: 766853
explicit: false
by artist: Galina Vishnevskaya
by artist: Boris Khaikin
by artist: Оркестр Большого театра
in album: Tchaikovsky: Eugene Onegin, Op. 24
  type: MusicAlbum
  date published: 2011-01-01
isrc code: UK2Y21801576
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758f834e676cc6a64621ee8f35ba9b39bac8ec7faa1c8c482292b2ae5fa7790d. 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/UK2Y21801576.
  date published: 2026-07-08T03:20:19Z
audio: Eugene Onegin, Op. 24, Act I Scene 2: No. 9, Tatiana's Letter Scene "Puskay pogibnu ya"
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Eugene Onegin, Op. 24, Act I Scene 2: No. 10, Scene and Duet "Ah, noch minula, vse prosnulis"
type: MusicRecording
duration: PT6M5S
duration ms: 365773
explicit: false
by artist: Galina Vishnevskaya
by artist: Евгения Вербицкая
by artist: Boris Khaikin
by artist: Оркестр Большого театра
in album: Tchaikovsky: Eugene Onegin, Op. 24
  type: MusicAlbum
  date published: 2011-01-01
isrc code: UK2Y21801577
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3a825eac2a731c59c99ff2c98653b14504ac3a134f695ae5b5dbbb8f2ef7f7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK2Y21801577.
  date published: 2026-07-08T03:22:41Z
audio: Eugene Onegin, Op. 24, Act I Scene 2: No. 10, Scene and Duet "Ah, noch minula, vse prosnulis"
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Mode (Major/Minor)
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  additional property: Instrumentalness
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  additional property: Valence (Positivity)
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Bolshoi. The Best of Melodiya
type: MusicAlbum
date published: 2013-01-01
track: The Queen of Spades, Op. 68, Act III Scene 7: Herman`s Aria "Chto nasha zhizn? Igra!"
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  duration: PT2M15S
  duration ms: 135893
  explicit: false
  by artist: Pyotr Ilyich Tchaikovsky
  by artist: Зураб Анджапаридзе
  by artist: Boris Khaikin
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec7600253138360df4ca8cacb7ece3680c377d3529039c73a4c200fbd05e1ec. 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/UK2Y21310549.
    date published: 2026-07-08T03:20:19Z
  audio: The Queen of Spades, Op. 68, Act III Scene 7: Herman`s Aria "Chto nasha zhizn? Igra!"
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    additional property: Danceability
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Сны вечности
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Mussorgsky: Boris Godunov
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Руслан и Людмила
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Prokofiev: Cantata for the 20th Anniversary of the October Revolution, Op. 74 & Scythian Suite, Op. 20
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До твоето дясно рамо
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