Karlis Lacis
type: MusicGroup
popularity: 5
followers: 401
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xca159a2842c63a2ef109e1825ca661d93285bde66e0d1d404e1f8f96de166ff1
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954728
additional property: OTSProofURL
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  value: https://artists.proofprofile.net/proofs/artist/f7e51783-fd0b-4b72-89ac-dababbbe0503.ots
additional property: OTSRecordURL
  type: PropertyValue
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca159a2842c63a2ef109e1825ca661d93285bde66e0d1d404e1f8f96de166ff1. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f7e51783-fd0b-4b72-89ac-dababbbe0503.json and https://artists.proofprofile.net/proofs/artist/f7e51783-fd0b-4b72-89ac-dababbbe0503.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T18:08:38Z
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album: Kārlis Lācis: Piano Concerto, Latvian Symphony
  type: MusicAlbum
  date published: 2022-02-18
album: Liepaja Concerti Vol. I
  type: MusicAlbum
  date published: 2018-01-26
album: The Light of Christmas: Latvian Cantatas of the Christmas Season
  type: MusicAlbum
  date published: 2015-09-01
album: Ziedonis.Lācis.Sievietes
  type: MusicAlbum
  date published: 2013-04-15
album: Fresh Evergreen
  type: MusicAlbum
  date published: 2002-01-01
album: Ballet "The Jungle Book" (Live)
  type: MusicAlbum
  date published: 2024-04-12
album: The Visit (Original Theatre cast recording)
  type: MusicAlbum
  date published: 2023-12-01
album: Momenti
  type: MusicAlbum
  date published: 2022-01-21
album: LĀCIS.AIJA.DIVATĀ
  type: MusicAlbum
  date published: 2021-02-01
  track: Pilns kociņš tumšsarkanu ķiršu
album: Theatre
  type: MusicAlbum
  date published: 2020-05-27
album: Stage beauty
  type: MusicAlbum
  date published: 2020-05-26
album: Shakespeare in love
  type: MusicAlbum
  date published: 2020-05-19
album: Mūzikls Žanna d'Arka
  type: MusicAlbum
  date published: 2016-01-29
album: Синяя птица
  type: MusicAlbum
  date published: 2015-05-27
album: Mūzikls Oņegins (Original Theatre Soundtrack)
  type: MusicAlbum
  date published: 2013-02-22
album: Mūzikls Pūt, Vējiņi!
  type: MusicAlbum
  date published: 2011-11-11
  track: Baibas ārija
  track: Pūt Vējiņi! Fināls (Liepājas aktieri)
album: Oskars Stroks. Rīgas Tango
  type: MusicAlbum
  date published: 2006-04-03
album: Corners
  type: MusicAlbum
  date published: 2000-01-01
album: Pilns kociņš tumšsarkanu ķiršu
  type: MusicAlbum
  date published: 2020-11-14
album: Symphony The passion of Christ (Live)
  type: MusicAlbum
  date published: 2020-05-26
album: Nakts
  type: MusicAlbum
  date published: 2020-05-26
album: Vocalization
  type: MusicAlbum
  date published: 2020-05-14
album: String quartet nr.1
  type: MusicAlbum
  date published: 2020-05-04
album: Piano Concert
  type: MusicAlbum
  date published: 2020-05-04
album: Latvju simfonija
  type: MusicAlbum
  date published: 2019-10-04
album: Valsis stīgu kvintetam (Live)
  type: MusicAlbum
  date published: 2017-07-12
album: Rorate Coeli
  type: MusicAlbum
  date published: 2014-12-23
album: Te Deum (Live)
  type: MusicAlbum
  date published: 2014-08-26
album: String quintet nr. 1 (Live)
  type: MusicAlbum
  date published: 2014-08-26
album: Mirkļa iztēles vilinājums (Live)
  type: MusicAlbum
  date published: 2006-03-25
album: Rhythm Drive
  type: MusicAlbum
  date published: 2004-05-27
album: Mēness Balts
  type: MusicAlbum
  date published: 2003-06-11
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    by artist: Andris Kivičs
    in album: Mēness Balts
      type: MusicAlbum
      date published: 2003-06-11
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    additional property: CopyrightStatus
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    additional property: OTSVerificationAPI
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    additional property: OTSTimestamp
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    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bffa6a3db118a7a47732dace08776b2809adb16e943b8a29526eada15a6f0d8. 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/QMBZ92058449.
      date published: 2026-07-02T03:55:08Z
    audio: Veltījums
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      additional property: Tempo (BPM)
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      additional property: Energy
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      additional property: Speechiness
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      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Atnākšana
album: Princešu Ziemas Dziesmas

Pilns kociņš tumšsarkanu ķiršu
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duration: PT3M26S
duration ms: 206193
explicit: false
by artist: Karlis Lacis
by artist: Aija Vītoliņa
in album: LĀCIS.AIJA.DIVATĀ
  type: MusicAlbum
  date published: 2021-02-01
isrc code: GBSMU9443204
additional property: CopyrightID
additional property: CopyrightStatus
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  value: registered
additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSVerificationAPI
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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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:22:41+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa6dc188c039948c9b0dda3aaef5e9783e70b13a0f990045ebe817c7b351dd6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU9443204.
  date published: 2026-07-08T03:22:41Z
audio: Pilns kociņš tumšsarkanu ķiršu
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Time Signature
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  additional property: Danceability
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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: Key Name
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Baibas ārija
type: MusicRecording
duration: PT4M17S
duration ms: 257294
explicit: false
by artist: Karlis Lacis
in album: Mūzikls Pūt, Vējiņi!
  type: MusicAlbum
  date published: 2011-11-11
isrc code: GBSMU8489606
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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  value: 2026-07-07T05:43:10+00:00
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU8489606
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
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additional property: TokenDeploymentConfirmed
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  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
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additional property: BitcoinTime
  type: PropertyValue
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a18eb417d374a33ae47baca69e83ab33445aa4237fa3bd633d270acee4c9c8. 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/GBSMU8489606.
  date published: 2026-07-08T03:20:19Z
audio: Baibas ārija
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  additional property: Mode (Major/Minor)
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    type: PropertyValue
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  additional property: Danceability
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Key Name
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  additional property: Mode Name
    type: PropertyValue
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Pūt Vējiņi! Fināls (Liepājas aktieri)
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duration: PT3M12S
duration ms: 192238
explicit: false
by artist: Karlis Lacis
in album: Mūzikls Pūt, Vējiņi!
  type: MusicAlbum
  date published: 2011-11-11
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f70c043584f43eaee725104046a4138eecd946d91b1ae2a50191bc54751313. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBSMU8489607.
  date published: 2026-07-29T21:09:47Z
audio: Pūt Vējiņi! Fināls (Liepājas aktieri)
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  additional property: Tempo (BPM)
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Valence (Positivity)
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  additional property: Key Name
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isrc code: GBSMU8489607
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: ContentHash
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additional property: BitcoinTime
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU8489607
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960144
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 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

Instrumentalness
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Liveness
type: PropertyValue
value: 0.075

Valence (Positivity)
type: PropertyValue
value: 0.225

Loudness (dB)
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value: -20.933

Key Name
type: PropertyValue
value: D

Mode Name
type: PropertyValue
value: Major

Atnākšana
type: MusicAlbum
date published: 2020-07-14

Princešu Ziemas Dziesmas
type: MusicAlbum
date published: 2009-12-24