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description: Pēteris Plakidis (4 March 1947 – 8 August 2017) was a Latvian composer and pianist. Early life Plakidis was born on 4 March 1947 in Riga, Latvia. He was educated at the Emīls Dārziņš College of Music
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  track: Little Concerto for Two Violins: II. Vakara mūzika
album: Musica baltica
album: Zīles ziņa
album: From My Home. Music from the Baltic Countries by Pärt, Tüür, Vasks ...
album: Spectrum 4
album: Pēteris Plakidis: Eternity
album: Music for Winds by Latvian Composers
album: Pēteris Plakidis: Nolemtība
album: Plakidis: Glance Back
album: Kõrvits: Kreek's Notebook
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album: Vasks, Plakidis & Zemzaris: Northwind
album: Latvian Radio Archive: Artūrs Grīnups
album: Ne tikai lirika

Little Concerto for Two Violins: III. Ceļš
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Little Concerto for Two Violins: I. Sadziedāšanās
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Little Concerto for Two Violins: II. Vakara mūzika
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Mūžība
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Mūžība
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Rudenī
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duration: PT2M47S
duration ms: 167168
explicit: false
by artist: P?teris Plakidis
by artist: Latvian Radio Choir
by artist: Sigvards Kļava
by artist: Pēteris Plakidis
in album: Pēteris Plakidis: Eternity
  type: MusicAlbum
  date published: 2021-09-03
popularity: 0
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a58f204d84498961cb91e62e9ac58147f5dc6d8b262f4bdc614c05566efe5e6. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/LVL152103017.
  date published: 2026-07-30T14:44:50Z
audio: Rudenī
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additional property: CopyrightID
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additional property: OTSTimestamp
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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 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

In Memoriam
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duration: PT4M16S
duration ms: 256687
explicit: false
by artist: P?teris Plakidis
by artist: Latvian Radio Choir
by artist: Sigvards Kļava
by artist: Pēteris Plakidis
in album: Pēteris Plakidis: Eternity
  type: MusicAlbum
  date published: 2021-09-03
popularity: 6
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd773fa01c2faa5400315d8c59e97b57cf1433b260df08324832d30d06a573f. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/LVL152103012.
  date published: 2026-07-31T19:53:13Z
audio: In Memoriam
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isrc code: LVL152103012
additional property: CopyrightID
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additional property: OTSTimestamp
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

Liveness
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value: 0.288

Valence (Positivity)
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Loudness (dB)
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Key Name
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Musica baltica
type: MusicAlbum
date published: 2023-09-22
track: Pärt: Cantus in memoriam Benjamin Britten
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  by artist: Paavo Järvi
  by artist: Estonian National Symphony Orchestra
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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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    date published: 2026-07-08T03:22:41Z
  audio: Pärt: Cantus in memoriam Benjamin Britten
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track: Tormis: Swing Songs: No. 4, The Swing Asks for Gifts
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  by artist: Tõnu Kaljuste
  by artist: Estonian Philharmonic Chamber Choir
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    date published: 2023-09-22
  genre: choral
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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 0x096cf3b9570ffd13c3ab7e2357d8561b67ae4cfa219e1dfcb866bcce37ecbd4d. 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/GBAYC9502943.
    date published: 2026-07-08T03:20:19Z
  audio: Tormis: Swing Songs: No. 4, The Swing Asks for Gifts
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track: Pärt: The Beatitudes
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  duration: PT5M56S
  duration ms: 356280
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  by artist: Arvo Pärt
  by artist: Choir of King's College, Cambridge
  by artist: David Goode
  by artist: Stephen Cleobury
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    date published: 2023-09-22
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  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
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  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Pärt: The Beatitudes

OTSBitcoinBlock
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value: 957073

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/957073

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYD9400025

OTSTimestamp
type: PropertyValue
value: 2026-07-07T18:39:05Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6560b7f5f3a893467019053515963228e422747d9321facb67802a88f5666de5. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBAYD9400025.
date published: 2026-07-07T18:39:05Z

Pärt: The Beatitudes
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additional property: Tempo (BPM)
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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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additional property: Energy
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additional property: Speechiness
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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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additional property: Loudness (dB)
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Zīles ziņa
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date published: 1995-01-01
track: Kur tu biji, bāleliņi?
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  by artist: Selga Mence
  by artist: Agris Pilsums
  by artist: Sieviešu koris "Dzintars"
  by artist: Ausma Derkēvica
  in album: Zīles ziņa
    type: MusicAlbum
    date published: 1995-01-01
  popularity: 13
  isrc code: QM6P42212673
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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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    date published: 2026-07-02T03:55:08Z
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From My Home. Music from the Baltic Countries by Pärt, Tüür, Vasks ...
type: MusicAlbum
date published: 1997-01-01

Spectrum 4
type: MusicAlbum
date published: 2005

Pēteris Plakidis: Eternity
type: MusicAlbum
date published: 2021-09-03
track: Mūžība
track: Rudenī
track: In Memoriam

Music for Winds by Latvian Composers
type: MusicAlbum
date published: 2018-06-15

Pēteris Plakidis: Nolemtība
type: MusicAlbum
date published: 2023-04-01

Plakidis: Glance Back
type: MusicAlbum
date published: 2019-10-18

Kõrvits: Kreek's Notebook
type: MusicAlbum
date published: 2013-06-30
track: Kreek's Notebook: I. Nüüd ole, Jeesus, kiidetud
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  duration: PT4M25S
  duration ms: 265960
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  by artist: The Choir of Royal Holloway
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