Vitalij Kowaljow
type: MusicGroup
genre: opera
description: Vitalij Kowaljow is a bass opera singer living in Switzerland. He initially studied piano as a child, but inspired by his parents, who sang in the choir of his Baptist church in Cherkasy, Ukraine, he
popularity: 26
followers: 224
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subject of: OpenTimestamps Proof of Existence
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album: Tchaikovsky: Iolanta (Live)
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  date published: 2015-01-01
  track: Iolanta Op. 69: Introduction - Live
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    by artist: Pyotr Ilyich Tchaikovsky
    by artist: Slovenian Philharmonic Orchestra
    by artist: Emmanuel Villaume
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      date published: 2015-01-01
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-30T17:23:26Z
    audio: Iolanta Op. 69: Introduction - Live
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  track: Iolanta Op. 69 / 1. Scene And Arioso Of Iolanta: "Moy ptenčik, Iolanta, tï ustala?" - Live
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-29T19:35:34Z
    audio: Iolanta Op. 69 / 1. Scene And Arioso Of Iolanta: "Moy ptenčik, Iolanta, tï ustala?" - Live
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  track: Iolanta Op. 69, TH 11: "Otčego ėto prežde ne znala" - Live
  track: Iolanta Op. 69 / 2. Scene And Chorus: "Polno, ne nado, rodnaya" "Vot tebe lyutiki" - Live
  track: Iolanta Op. 69 / 3. Scene And Chorus: "Brigitta, ėto tï?" - Live
  track: Iolanta Op. 69 / 3. Scene And Chorus: "Spi, pust' angelï krïlami navevayut snï" - Live
  track: Iolanta Op. 69 / 4. Scene And Arioso Of The King: "Prizïvnïy rog" - Live
  track: Iolanta Op. 69 / 4. Scene And Arioso Of The King: "Gospod' moy, esli grešen ya" - Live
  track: Iolanta Op. 69 / 5. Scene And Monologue Of Ibn-Hakia: "Tvoyo lico besstrastno" - Live
  track: Iolanta Op. 69 / 5. Scene And Monologue Of Ibn-Hakia: "Dva mira - plotskiy i dukhovnïy" - Live
  track: Iolanta Op. 69 / 6. Scene And Aria Of Robert: "Ne toropis', zdes' tak temno" "Kto možet sravnit'sya" - Live
  track: Iolanta Op. 69 / 6a. Romance Of Vaudémont: "Net! Čarï lask krasï myatežnoy" - Live
  track: Iolanta Op. 69 / 7. Scene And Duet Of Iolanta And Vaudémont: "Odnako gde že mï?" - Live
  track: Iolanta Op. 69 / 7. Scene And Duet Of Iolanta And Vaudémont: "Vï mne predstali kak viden'e" - Live
  track: Iolanta Op. 69 / 7. Scene And Duet Of Iolanta And Vaudémont: "Tvoyo mol?an'e neponyatno" "?udnïy pervenec tvoren'ya" - Live
  track: Iolanta Op. 69 / 8. Scene: "Net, nazovi mučen'ya, stradan'ya, bol" - Live
  track: Iolanta Op. 69 / 9. Finale: "Prosti menya" - Live
  track: Iolanta Op. 69 / 9. Finale: "Gotfrid, ya vïručat' tebya yavilsya" - Live
  track: Iolanta Op. 69 / 9. Finale: "Gde ya?" - Live
album: Shostakovich: Symphony No. 13, "Babi Yar"

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Iolanta Op. 69, TH 11: "Otčego ėto prežde ne znala" - Live
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Iolanta Op. 69, TH 11: "Otčego ėto prežde ne znala" - Live
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Iolanta Op. 69 / 2. Scene And Chorus: "Polno, ne nado, rodnaya" "Vot tebe lyutiki" - Live
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Iolanta Op. 69 / 2. Scene And Chorus: "Polno, ne nado, rodnaya" "Vot tebe lyutiki" - Live
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Iolanta Op. 69 / 3. Scene And Chorus: "Brigitta, ėto tï?" - Live
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Iolanta Op. 69 / 3. Scene And Chorus: "Brigitta, ėto tï?" - Live
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  additional property: Valence (Positivity)
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    value: 0.04
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.555
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Iolanta Op. 69 / 3. Scene And Chorus: "Spi, pust' angelï krïlami navevayut snï" - Live
type: MusicRecording
duration: PT3M12S
duration ms: 192200
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Theresa Plut
by artist: Nuška Rojko
by artist: Monika Bohinec
by artist: Slovenian Philharmonic Orchestra
by artist: Emmanuel Villaume
by artist: Slovenian Chamber Choir
in album: Tchaikovsky: Iolanta (Live)
  type: MusicAlbum
  date published: 2015-01-01
isrc code: DEN961231206
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T18:41:18+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x49f018932d026fb3a6566a7a930509a65b9ff2545dccf733c494f7fd18d1be5c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960138
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960138
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961231206
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T19:35:34Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f018932d026fb3a6566a7a930509a65b9ff2545dccf733c494f7fd18d1be5c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961231206 — a six-check JSON result.
  date published: 2026-07-29T19:35:34Z
audio: Iolanta Op. 69 / 3. Scene And Chorus: "Spi, pust' angelï krïlami navevayut snï" - Live
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 103.645
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.223
  additional property: Energy
    type: PropertyValue
    value: 0.251
  additional property: Speechiness
    type: PropertyValue
    value: 0.048
  additional property: Acousticness
    type: PropertyValue
    value: 0.981
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.11
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.224
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.588
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Iolanta Op. 69 / 4. Scene And Arioso Of The King: "Prizïvnïy rog" - Live
type: MusicRecording
duration: PT9M13S
duration ms: 553693
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Monika Bohinec
by artist: JunHo You
by artist: Lucas Meachem
by artist: Vitalij Kowaljow
by artist: Luka Debevec Mayer
by artist: Slovenian Philharmonic Orchestra
by artist: Emmanuel Villaume
in album: Tchaikovsky: Iolanta (Live)
  type: MusicAlbum
  date published: 2015-01-01
isrc code: DEN961231207
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T22:11:17+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5af9ae7a8c931f97f855e89549a52df86f28e1888443ca8ecb39a293f7e43484
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960321
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960321
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961231207
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T22:27:30Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af9ae7a8c931f97f855e89549a52df86f28e1888443ca8ecb39a293f7e43484. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961231207 — a six-check JSON result.
  date published: 2026-07-30T22:27:30Z
audio: Iolanta Op. 69 / 4. Scene And Arioso Of The King: "Prizïvnïy rog" - Live
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 125.685
  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: 0.435
  additional property: Energy
    type: PropertyValue
    value: 0.128
  additional property: Speechiness
    type: PropertyValue
    value: 0.063
  additional property: Acousticness
    type: PropertyValue
    value: 0.976
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.101
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.098
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.489
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Iolanta Op. 69 / 4. Scene And Arioso Of The King: "Gospod' moy, esli grešen ya" - Live
type: MusicRecording
duration: PT3M17S
duration ms: 197946
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Vitalij Kowaljow
by artist: Slovenian Philharmonic Orchestra
by artist: Emmanuel Villaume
in album: Tchaikovsky: Iolanta (Live)
  type: MusicAlbum
  date published: 2015-01-01
isrc code: DEN961231208
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T14:52:55+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x16fcc357c5b8794b90a31ee390514c32039e5668d7a222d95cbfbce6d9cbb622
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960418
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960418
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961231208
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T15:20:15Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16fcc357c5b8794b90a31ee390514c32039e5668d7a222d95cbfbce6d9cbb622. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961231208 — a six-check JSON result.
  date published: 2026-07-31T15:20:15Z
audio: Iolanta Op. 69 / 4. Scene And Arioso Of The King: "Gospod' moy, esli grešen ya" - Live
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 101.842
  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: 0.212
  additional property: Energy
    type: PropertyValue
    value: 0.156
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.963
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.002
  additional property: Liveness
    type: PropertyValue
    value: 0.101
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.076
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.744
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Iolanta Op. 69 / 5. Scene And Monologue Of Ibn-Hakia: "Tvoyo lico besstrastno" - Live
type: MusicRecording
duration: PT3M10S
duration ms: 190213
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Lucas Meachem
by artist: Vitalij Kowaljow
by artist: Slovenian Philharmonic Orchestra
by artist: Emmanuel Villaume
in album: Tchaikovsky: Iolanta (Live)
  type: MusicAlbum
  date published: 2015-01-01
isrc code: DEN961231209
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T17:56:06+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x598d70e1d4798eb546e2018e6e62c214ab06f1f500e792e56fcc5c262150d49f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960448
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960448
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961231209
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T18:48:12Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598d70e1d4798eb546e2018e6e62c214ab06f1f500e792e56fcc5c262150d49f. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961231209 — a six-check JSON result.
  date published: 2026-07-31T18:48:12Z
audio: Iolanta Op. 69 / 5. Scene And Monologue Of Ibn-Hakia: "Tvoyo lico besstrastno" - Live
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 110.29
  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: 0.369
  additional property: Energy
    type: PropertyValue
    value: 0.133
  additional property: Speechiness
    type: PropertyValue
    value: 0.047
  additional property: Acousticness
    type: PropertyValue
    value: 0.98
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.193
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.192
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.811
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Iolanta Op. 69 / 5. Scene And Monologue Of Ibn-Hakia: "Dva mira - plotskiy i dukhovnïy" - Live
type: MusicRecording
duration: PT4M28S
duration ms: 268533
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Lucas Meachem
by artist: Vitalij Kowaljow
by artist: Slovenian Philharmonic Orchestra
by artist: Emmanuel Villaume
in album: Tchaikovsky: Iolanta (Live)
  type: MusicAlbum
  date published: 2015-01-01
isrc code: DEN961231210
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T17:49:56+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xba60a38877ba2b286064110dfb07d9bab5d4ba6ddfda5f526995ccb2fc471f09
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960291
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960291
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961231210
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T18:23:33Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba60a38877ba2b286064110dfb07d9bab5d4ba6ddfda5f526995ccb2fc471f09. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961231210 — a six-check JSON result.
  date published: 2026-07-30T18:23:33Z
audio: Iolanta Op. 69 / 5. Scene And Monologue Of Ibn-Hakia: "Dva mira - plotskiy i dukhovnïy" - Live
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 121.425
  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: 0.3
  additional property: Energy
    type: PropertyValue
    value: 0.147
  additional property: Speechiness
    type: PropertyValue
    value: 0.036
  additional property: Acousticness
    type: PropertyValue
    value: 0.971
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.011
  additional property: Liveness
    type: PropertyValue
    value: 0.092
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.117
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.792
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Iolanta Op. 69 / 6. Scene And Aria Of Robert: "Ne toropis', zdes' tak temno" "Kto možet sravnit'sya" - Live
type: MusicRecording
duration: PT5M15S
duration ms: 315213
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Sergey Skorokhodov
by artist: Alexey Markov
by artist: Slovenian Philharmonic Orchestra
by artist: Emmanuel Villaume
in album: Tchaikovsky: Iolanta (Live)
  type: MusicAlbum
  date published: 2015-01-01
isrc code: DEN961231211
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T08:32:41+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x77c5f6c197e96534331e3cdc7edd0fc664a28233b4b700514a6cd865fb0bad67
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960370
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960370
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961231211
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T08:38:45Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c5f6c197e96534331e3cdc7edd0fc664a28233b4b700514a6cd865fb0bad67. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961231211 — a six-check JSON result.
  date published: 2026-07-31T08:38:45Z
audio: Iolanta Op. 69 / 6. Scene And Aria Of Robert: "Ne toropis', zdes' tak temno" "Kto možet sravnit'sya" - Live
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 103.02
  additional property: Musical Key
    type: PropertyValue
    value: 6
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.349
  additional property: Energy
    type: PropertyValue
    value: 0.255
  additional property: Speechiness
    type: PropertyValue
    value: 0.055
  additional property: Acousticness
    type: PropertyValue
    value: 0.98
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.148
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.386
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.62
  additional property: Key Name
    type: PropertyValue
    value: F#
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Iolanta Op. 69 / 6a. Romance Of Vaudémont: "Net! Čarï lask krasï myatežnoy" - Live
type: MusicRecording
duration: PT3M38S
duration ms: 218733
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Sergey Skorokhodov
by artist: Slovenian Philharmonic Orchestra
by artist: Emmanuel Villaume
in album: Tchaikovsky: Iolanta (Live)
  type: MusicAlbum
  date published: 2015-01-01
isrc code: DEN961231212
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T16:36:47+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x766359669939ab45938af503017b986865538fc3dcfb14091aad752428dd84dd
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/DEN961231212
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766359669939ab45938af503017b986865538fc3dcfb14091aad752428dd84dd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961231212 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Iolanta Op. 69 / 6a. Romance Of Vaudémont: "Net! Čarï lask krasï myatežnoy" - Live
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 108.766
  additional property: Musical Key
    type: PropertyValue
    value: 8
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.219
  additional property: Energy
    type: PropertyValue
    value: 0.157
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
    type: PropertyValue
    value: 0.984
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.101
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.102
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.383
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Major

Iolanta Op. 69 / 7. Scene And Duet Of Iolanta And Vaudémont: "Odnako gde že mï?" - Live
type: MusicRecording
duration: PT6M35S
duration ms: 395226
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Anna Netrebko
by artist: Sergey Skorokhodov
by artist: Alexey Markov
by artist: Slovenian Philharmonic Orchestra
by artist: Emmanuel Villaume
in album: Tchaikovsky: Iolanta (Live)
  type: MusicAlbum
  date published: 2015-01-01
isrc code: DEN961231213
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T01:34:40+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x82d5fa78bf810ebcb8fe9be847ac962806aa59d49c3d16555f717531fe829695
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960334
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960334
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961231213
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T02:19:15Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d5fa78bf810ebcb8fe9be847ac962806aa59d49c3d16555f717531fe829695. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961231213 — a six-check JSON result.
  date published: 2026-07-31T02:19:15Z
audio: Iolanta Op. 69 / 7. Scene And Duet Of Iolanta And Vaudémont: "Odnako gde že mï?" - Live
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 96.853
  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: 0.3
  additional property: Energy
    type: PropertyValue
    value: 0.145
  additional property: Speechiness
    type: PropertyValue
    value: 0.072
  additional property: Acousticness
    type: PropertyValue
    value: 0.985
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.461
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.144
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.562
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Iolanta Op. 69 / 7. Scene And Duet Of Iolanta And Vaudémont: "Vï mne predstali kak viden'e" - Live
type: MusicRecording
duration: PT5M29S
duration ms: 329893
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Anna Netrebko
by artist: Sergey Skorokhodov
by artist: Slovenian Philharmonic Orchestra
by artist: Emmanuel Villaume
in album: Tchaikovsky: Iolanta (Live)
  type: MusicAlbum
  date published: 2015-01-01
isrc code: DEN961231214
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T12:29:50+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7d956ca6b63f1d75622fadfde9a42ac75d9bbd6c96bf6b9f9426a5706315ac39
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/DEN961231214
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d956ca6b63f1d75622fadfde9a42ac75d9bbd6c96bf6b9f9426a5706315ac39. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961231214 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Iolanta Op. 69 / 7. Scene And Duet Of Iolanta And Vaudémont: "Vï mne predstali kak viden'e" - Live
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 97.035
  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: 0.296
  additional property: Energy
    type: PropertyValue
    value: 0.194
  additional property: Speechiness
    type: PropertyValue
    value: 0.053
  additional property: Acousticness
    type: PropertyValue
    value: 0.983
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.11
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.083
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.583
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Iolanta Op. 69 / 7. Scene And Duet Of Iolanta And Vaudémont: "Tvoyo mol?an'e neponyatno" "?udnïy pervenec tvoren'ya" - Live
type: MusicRecording
duration: PT8M39S
duration ms: 519699
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Anna Netrebko
by artist: Sergey Skorokhodov
by artist: Slovenian Philharmonic Orchestra
by artist: Emmanuel Villaume
in album: Tchaikovsky: Iolanta (Live)
  type: MusicAlbum
  date published: 2015-01-01
isrc code: DEN961231215
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T10:11:40+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf52ffeeea2ea338325f4ab8f34f544571f08cf0777122048492b64e9eea0c005
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960389
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960389
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961231215
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T10:20:10Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52ffeeea2ea338325f4ab8f34f544571f08cf0777122048492b64e9eea0c005. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961231215 — a six-check JSON result.
  date published: 2026-07-31T10:20:10Z
audio: Iolanta Op. 69 / 7. Scene And Duet Of Iolanta And Vaudémont: "Tvoyo mol?an'e neponyatno" "?udnïy pervenec tvoren'ya" - Live
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 103.577
  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: 0.257
  additional property: Energy
    type: PropertyValue
    value: 0.239
  additional property: Speechiness
    type: PropertyValue
    value: 0.051
  additional property: Acousticness
    type: PropertyValue
    value: 0.975
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.083
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.083
  additional property: Loudness (dB)
    type: PropertyValue
    value: -17.029
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Iolanta Op. 69 / 8. Scene: "Net, nazovi mučen'ya, stradan'ya, bol" - Live
type: MusicRecording
duration: PT4M15S
duration ms: 255520
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Anna Netrebko
by artist: Theresa Plut
by artist: Nuška Rojko
by artist: Monika Bohinec
by artist: Sergey Skorokhodov
by artist: JunHo You
by artist: Lucas Meachem
by artist: Vitalij Kowaljow
by artist: Luka Debevec Mayer
by artist: Slovenian Philharmonic Orchestra
by artist: Emmanuel Villaume
by artist: Slovenian Chamber Choir
in album: Tchaikovsky: Iolanta (Live)
  type: MusicAlbum
  date published: 2015-01-01
isrc code: DEN961231217
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T21:23:37+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2c77c88efcd9ba759ad67292cabab62bb9e8c7a9587305fbe25935e248b6a478
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960317
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960317
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961231217
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T21:35:24Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c77c88efcd9ba759ad67292cabab62bb9e8c7a9587305fbe25935e248b6a478. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961231217 — a six-check JSON result.
  date published: 2026-07-30T21:35:24Z
audio: Iolanta Op. 69 / 8. Scene: "Net, nazovi mučen'ya, stradan'ya, bol" - Live
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 123.87
  additional property: Musical Key
    type: PropertyValue
    value: 8
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 6
  additional property: Danceability
    type: PropertyValue
    value: 0.357
  additional property: Energy
    type: PropertyValue
    value: 0.181
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.971
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.084
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.133
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.758
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Major

Iolanta Op. 69 / 9. Finale: "Prosti menya" - Live
type: MusicRecording
duration: PT2M9S
duration ms: 129080
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Sergey Skorokhodov
by artist: JunHo You
by artist: Vitalij Kowaljow
by artist: Slovenian Philharmonic Orchestra
by artist: Emmanuel Villaume
in album: Tchaikovsky: Iolanta (Live)
  type: MusicAlbum
  date published: 2015-01-01
isrc code: DEN961231218
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T18:52:27+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x98f20b75e2c3acad8765b09ef60ff8662f2e1c31a7f8df6337562755a3096a5e
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/DEN961231218
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f20b75e2c3acad8765b09ef60ff8662f2e1c31a7f8df6337562755a3096a5e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961231218 — a six-check JSON result.
  date published: 2026-07-08T03:22:41Z
audio: Iolanta Op. 69 / 9. Finale: "Prosti menya" - Live
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 109.062
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.43
  additional property: Energy
    type: PropertyValue
    value: 0.238
  additional property: Speechiness
    type: PropertyValue
    value: 0.085
  additional property: Acousticness
    type: PropertyValue
    value: 0.968
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.432
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.566
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.013
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Iolanta Op. 69 / 9. Finale: "Gotfrid, ya vïručat' tebya yavilsya" - Live
type: MusicRecording
duration: PT4M50S
duration ms: 290386
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Theresa Plut
by artist: Nuška Rojko
by artist: Monika Bohinec
by artist: Sergey Skorokhodov
by artist: JunHo You
by artist: Alexey Markov
by artist: Lucas Meachem
by artist: Vitalij Kowaljow
by artist: Luka Debevec Mayer
by artist: Slovenian Philharmonic Orchestra
by artist: Emmanuel Villaume
by artist: Slovenian Chamber Choir
in album: Tchaikovsky: Iolanta (Live)
  type: MusicAlbum
  date published: 2015-01-01
isrc code: DEN961231219
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T20:56:46+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x69b49f2cb829d6c5716acf9ada09d529428053a8b38b9dc6b8a011ca279b9623
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960317
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960317
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961231219
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T21:35:24Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b49f2cb829d6c5716acf9ada09d529428053a8b38b9dc6b8a011ca279b9623. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961231219 — a six-check JSON result.
  date published: 2026-07-30T21:35:24Z
audio: Iolanta Op. 69 / 9. Finale: "Gotfrid, ya vïručat' tebya yavilsya" - Live
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by artist: Slovenian Philharmonic Orchestra
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T21:00:46Z
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-06-13T13:32:09Z
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track: Symphony No. 13 in B-Flat Minor, Op. 113 "Babi Yar": II. Humour. Allegretto
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-29T19:35:34Z
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track: Symphony No. 13 in B-Flat Minor, Op. 113 "Babi Yar": III. In the Store. Adagio
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  subject of: OpenTimestamps Proof of Existence
  audio: Symphony No. 13 in B-Flat Minor, Op. 113 "Babi Yar": III. In the Store. Adagio
track: Symphony No. 13 in B-Flat Minor, Op. 113 "Babi Yar": IV. Fears. Largo
track: Symphony No. 13 in B-Flat Minor, Op. 113 "Babi Yar": V. Career. Allegretto

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OTSVerificationAPI
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OTSTimestamp
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OTSVerifyInstructions
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OpenTimestamps Proof of Existence
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date published: 2026-07-30T06:39:12Z

Symphony No. 13 in B-Flat Minor, Op. 113 "Babi Yar": III. In the Store. Adagio
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Symphony No. 13 in B-Flat Minor, Op. 113 "Babi Yar": IV. Fears. Largo
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by artist: London Philharmonic Choir
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T19:35:34Z
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T13:32:09Z
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