Urmas Sisask
type: MusicGroup
genre: choral
description: thumb|right|Sisask in 2011 thumb|right|Estonian TV Girls' Choir with Urmas Sisask at St Paul's cathedral in London, 2008. Urmas Sisask (9 September 1960 – 17 December 2022) was an Estonian composer.
popularity: 21
followers: 1327
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subject of: OpenTimestamps Proof of Existence
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album: Tapiola Originals - Choral Works Commissioned by the Tapiola Chamber Choir
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  date published: 2000-01-01
album: Lighten mine eyes – Contemporary Choral Music
  type: MusicAlbum
  date published: 2010-02-01
album: Hope in Times of Disquiet
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  date published: 2021-01-18
  track: Cum Sancto Spiritu - Live
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    by artist: International Orange Chorale of San Francisco
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      date published: 2021-01-18
    genre: korean-contemporary-classical
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-06T06:56:49Z
    audio: Cum Sancto Spiritu - Live
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album: 2014 American Choral Directors Association, Western Division (ACDA): Mt. San Antonio College Chamber Singers & Salt Lake Vocal Artists [Live]
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album: Baltic Exchange: Prauliņš - Missa Rigensis and Other Choral Works
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album: KASVASIN KESK KADAKAID
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album: Latviešu, Lietuviešu un Igauņu Kora Mūzika
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  track: Mūsu Tēvs
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-22T18:05:20Z
    audio: Mūsu Tēvs
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  track: Šūpuļdziesma
  track: Heliseb Väljadel
album: Northern Lights Vol. 2 - Music of Contemplation for a New Age [US Version]
album: 2014 American Choral Directors Association, Western Division (ACDA): University of Southern California Thornton School of Music Chamber Singers & Riverside City College Chamber Singers [Live]
album: Nordic Voices
album: Deutscher Jugendkammerchor: Nachtschichten
album: World Sun Songs
album: Urmas Sisask: Starry Sky Cycle: Equatorial Sky
album: Galaxies
album: Gloria Patri... (1988 15 meditative and tranquil hymns for mixed choir a cappella)
album: Urmas Sisask : Gloria Patri..., Magnificat
album: Sisask : Starry Sky Cycle
album: Urmas Sisask: 2 Cosmic Piano Pieces
album: Cosmic Journeys
album: Urmas Sisask: Te Deum, Op. 37
album: 7 Part Cycle The Star Of Bethlehem Capella, Op 56
album: Urmas Sisask: 2 Pieces From New Zodiac
album: Sisask: Jõuluoratoorium (Weihnachtsoratorium), Missa No. 4 Jõulumissa (Weihnachtsmesse)
album: Singing Revolution (Estonia)
album: Omnis Una Gaudeamus
album: Like a Rainbow
album: Mit Menschen- und mit Engelszungen
album: Svētki! (Live)
album: Northern Lights - Music From Scandinavia
album: Tallis - Sisask - Świder - Palestrina - Szymanowski - Rachmaninow
album: invocation
album: Jauchzet dem Herrn alle Welt
album: Scandinavian Choir Music
album: Peace - Music For Reflection And Consolation
album: Immortal
album: A Crown of Rejoicing
album: Zoforbit: A Space Odyssey
album: Weihnachtliche Impressionen, Vol. 4
album: World Peace - Classical

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Šūpuļdziesma
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T13:32:09Z
audio: Šūpuļdziesma
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Heliseb Väljadel
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-21T17:30:53Z
audio: Heliseb Väljadel
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Northern Lights Vol. 2 - Music of Contemplation for a New Age [US Version]
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2014 American Choral Directors Association, Western Division (ACDA): University of Southern California Thornton School of Music Chamber Singers & Riverside City College Chamber Singers [Live]
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track: Sitivit anima mea (Live)
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    date published: 2026-07-02T03:30:09Z
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      type: PropertyValue
      value: -32.062
    additional property: Key Name
      type: PropertyValue
      value: Eb
    additional property: Mode Name
      type: PropertyValue
      value: Major

Nordic Voices
type: MusicAlbum
date published: 2010-10-01
track: 4 Shakespeare Songs: No. 1. Come Away Death
  type: MusicRecording
  duration: PT2M59S
  duration ms: 179400
  explicit: false
  by artist: Jaakko Mäntyjärvi
  by artist: Voces Nordicae
  by artist: Lone Larsen
  in album: Nordic Voices
    type: MusicAlbum
    date published: 2010-10-01
  genre: nordic-contemporary-classical
  isrc code: SEVWU0300213
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-23T09:51:34+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x9cab98de29c9c921246b03756e98dca0e2ffdc22e2fda6fe17a38a5d19f98081
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956304
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956304
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVWU0300213
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:55:08Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cab98de29c9c921246b03756e98dca0e2ffdc22e2fda6fe17a38a5d19f98081. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVWU0300213.
    date published: 2026-07-02T03:55:08Z
  audio: 4 Shakespeare Songs: No. 1. Come Away Death
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 168.078
    additional property: Musical Key
      type: PropertyValue
      value: 6
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.143
    additional property: Energy
      type: PropertyValue
      value: 0.083
    additional property: Speechiness
      type: PropertyValue
      value: 0.046
    additional property: Acousticness
      type: PropertyValue
      value: 0.99
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.001
    additional property: Liveness
      type: PropertyValue
      value: 0.145
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.029
    additional property: Loudness (dB)
      type: PropertyValue
      value: -26.564
    additional property: Key Name
      type: PropertyValue
      value: F#
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: 4 Shakespeare Songs: No. 2. Lullaby
  type: MusicRecording
  duration: PT3M1S
  duration ms: 181320
  explicit: false
  by artist: Jaakko Mäntyjärvi
  by artist: Voces Nordicae
  by artist: Lone Larsen
  in album: Nordic Voices
    type: MusicAlbum
    date published: 2010-10-01
  genre: nordic-contemporary-classical
  isrc code: SEVWU0300214
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-22T04:16:07+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x8e7fddc0f5023cd76e36029df3fb7dee0dc113d04723068fd38ac0cfab765e14
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956304
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956304
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVWU0300214
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:55:08Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7fddc0f5023cd76e36029df3fb7dee0dc113d04723068fd38ac0cfab765e14. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVWU0300214.
    date published: 2026-07-02T03:55:08Z
  audio: 4 Shakespeare Songs: No. 2. Lullaby
    type: AudioObject
    additional property: Tempo (BPM)
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      value: 138.238
    additional property: Musical Key
      type: PropertyValue
      value: 6
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.194
    additional property: Energy
      type: PropertyValue
      value: 0.066
    additional property: Speechiness
      type: PropertyValue
      value: 0.038
    additional property: Acousticness
      type: PropertyValue
      value: 0.967
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.016
    additional property: Liveness
      type: PropertyValue
      value: 0.094
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.058
    additional property: Loudness (dB)
      type: PropertyValue
      value: -29.503
    additional property: Key Name
      type: PropertyValue
      value: F#
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: 4 Shakespeare Songs: No. 3. Double, double toil and Trouble
  type: MusicRecording
  duration: PT3M28S
  duration ms: 208106
  explicit: false
  by artist: Jaakko Mäntyjärvi
  by artist: Voces Nordicae
  by artist: Lone Larsen
  in album: Nordic Voices
    type: MusicAlbum
    date published: 2010-10-01
  genre: nordic-contemporary-classical
  isrc code: SEVWU0300215
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-23T09:45:48+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x5d6fb788e34868ad6c1352c16e17bd3e5c1d61fb3feaee69d30b75fb243e48d0
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: 4 Shakespeare Songs: No. 3. Double, double toil and Trouble
track: 4 Shakespeare Songs: No. 4. Full fathom five

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 956304

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/956304

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVWU0300215

OTSTimestamp
type: PropertyValue
value: 2026-07-02T03:55:08Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6fb788e34868ad6c1352c16e17bd3e5c1d61fb3feaee69d30b75fb243e48d0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVWU0300215.
date published: 2026-07-02T03:55:08Z

4 Shakespeare Songs: No. 3. Double, double toil and Trouble
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 109.858
additional property: Musical Key
  type: PropertyValue
  value: 6
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: 0.238
additional property: Speechiness
  type: PropertyValue
  value: 0.047
additional property: Acousticness
  type: PropertyValue
  value: 0.987
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.291
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.059
additional property: Loudness (dB)
  type: PropertyValue
  value: -19.254
additional property: Key Name
  type: PropertyValue
  value: F#
additional property: Mode Name
  type: PropertyValue
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4 Shakespeare Songs: No. 4. Full fathom five
type: MusicRecording
duration: PT2M22S
duration ms: 142066
explicit: false
by artist: Jaakko Mäntyjärvi
by artist: Voces Nordicae
by artist: Lone Larsen
in album: Nordic Voices
  type: MusicAlbum
  date published: 2010-10-01
genre: nordic-contemporary-classical
isrc code: SEVWU0300216
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T08:04:36+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x05d3c91a83a9b62ea1d078d848385e349f61cded173571553df0ad34cf6f4661
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957819
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957819
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVWU0300216
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-13T07:53:33Z
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 0x05d3c91a83a9b62ea1d078d848385e349f61cded173571553df0ad34cf6f4661. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVWU0300216.
  date published: 2026-07-13T07:53:33Z
audio: 4 Shakespeare Songs: No. 4. Full fathom five
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 110.543
  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: 0.148
  additional property: Energy
    type: PropertyValue
    value: 0.05
  additional property: Speechiness
    type: PropertyValue
    value: 0.04
  additional property: Acousticness
    type: PropertyValue
    value: 0.973
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.141
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.032
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.382
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Major

Deutscher Jugendkammerchor: Nachtschichten
type: MusicAlbum
date published: 2016-10-01

World Sun Songs
type: MusicAlbum
date published: 2008-07-03

Urmas Sisask: Starry Sky Cycle: Equatorial Sky
type: MusicAlbum
date published: 2020-09-09

Galaxies
type: MusicAlbum
date published: 2006-09-22

Gloria Patri... (1988 15 meditative and tranquil hymns for mixed choir a cappella)
type: MusicAlbum
date published: 1997-09-15

Urmas Sisask : Gloria Patri..., Magnificat
type: MusicAlbum
date published: 1994-04-04
track: Sisask : Gloria Patri... 24 Hymns for Mixed Choir : V Laudate Dominum
  type: MusicRecording
  duration: PT3M21S
  duration ms: 201173
  explicit: false
  by artist: Urmas Sisask
  by artist: The Chamber Choir Eesti Projekt
  by artist: Anne-Liis Treimann
  in album: Urmas Sisask : Gloria Patri..., Magnificat
    type: MusicAlbum
    date published: 1994-04-04
  genre: baltic-classical
  isrc code: FIFIN9301005
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T04:10:01+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xb67f136f3514108979d03327a140ec6aa97ed17b002d734be669fa2071b04da7
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956889
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956889
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIFIN9301005
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-06T06:56:49Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67f136f3514108979d03327a140ec6aa97ed17b002d734be669fa2071b04da7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIFIN9301005.
    date published: 2026-07-06T06:56:49Z
  audio: Sisask : Gloria Patri... 24 Hymns for Mixed Choir : V Laudate Dominum
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 108.622
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.156
    additional property: Energy
      type: PropertyValue
      value: 0.05
    additional property: Speechiness
      type: PropertyValue
      value: 0.041
    additional property: Acousticness
      type: PropertyValue
      value: 0.99
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.37
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.048
    additional property: Loudness (dB)
      type: PropertyValue
      value: -27.345
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Sisask : Gloria Patri... 24 Hymns for Mixed Choir : XVII Dominus vobiscum
  type: MusicRecording
  duration: PT5M41S
  duration ms: 341146
  explicit: false
  by artist: Urmas Sisask
  by artist: The Chamber Choir Eesti Projekt
  by artist: Anne-Liis Treimann
  in album: Urmas Sisask : Gloria Patri..., Magnificat
    type: MusicAlbum
    date published: 1994-04-04
  genre: baltic-classical
  isrc code: FIFIN9301017
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-18T21:31:48+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x9bd6a9211ed7bd85542857912fd53b8aa3da8089f7967b2b1ff263aad0f28b4b
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956302
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956302
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIFIN9301017
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:30:09Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0x9bd6a9211ed7bd85542857912fd53b8aa3da8089f7967b2b1ff263aad0f28b4b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIFIN9301017.
    date published: 2026-07-02T03:30:09Z
  audio: Sisask : Gloria Patri... 24 Hymns for Mixed Choir : XVII Dominus vobiscum
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 124.268
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.165
    additional property: Energy
      type: PropertyValue
      value: 0.008
    additional property: Speechiness
      type: PropertyValue
      value: 0.046
    additional property: Acousticness
      type: PropertyValue
      value: 0.992
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.163
    additional property: Liveness
      type: PropertyValue
      value: 0.092
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.029
    additional property: Loudness (dB)
      type: PropertyValue
      value: -35.082
    additional property: Key Name
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      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major

Sisask : Starry Sky Cycle
type: MusicAlbum
date published: 1993-08-16
track: Sisask : Starry Sky Cycle Op.52 - Pleiades : 17. II Maja
  type: MusicRecording
  duration: PT1M28S
  duration ms: 88933
  explicit: false
  by artist: Urmas Sisask
  by artist: Lauri Väinmaa
  in album: Sisask : Starry Sky Cycle
    type: MusicAlbum
    date published: 1993-08-16
  genre: baltic-classical
  isrc code: FIFIN9300417
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-06T13:01:24+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x855f48200e1fa9a731d8e3d8ccdd79eb9bc31b2fcfd38d18d7f05964c916b130
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 953536
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/953536
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIFIN9300417
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-06-13T17:25:41Z
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Urmas Sisask: 2 Cosmic Piano Pieces
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Cosmic Journeys
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Urmas Sisask: Te Deum, Op. 37
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7 Part Cycle The Star Of Bethlehem Capella, Op 56
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Urmas Sisask: 2 Pieces From New Zodiac
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Sisask: Jõuluoratoorium (Weihnachtsoratorium), Missa No. 4 Jõulumissa (Weihnachtsmesse)
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Singing Revolution (Estonia)
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  subject of: OpenTimestamps Proof of Existence
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track: MU ISAMAA ON MINU ARM / MY HOMELAND IS ALL MY JOY
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  subject of: OpenTimestamps Proof of Existence
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Omnis Una Gaudeamus
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Like a Rainbow
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Mit Menschen- und mit Engelszungen
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Svētki! (Live)
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Northern Lights - Music From Scandinavia
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Tallis - Sisask - Świder - Palestrina - Szymanowski - Rachmaninow
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invocation
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Jauchzet dem Herrn alle Welt
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Scandinavian Choir Music
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Peace - Music For Reflection And Consolation
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Immortal
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A Crown of Rejoicing
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Zoforbit: A Space Odyssey
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Weihnachtliche Impressionen, Vol. 4
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World Peace - Classical
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