Imants Kokars
type: MusicGroup
genre: choral
description: Imants Kokars (16 August 1921 in Gulbene, Latvia – 24 November 2011 in Riga, Latvia) was a Latvian pedagogue and conductor. His twin brother Gido Kokars was also a conductor. Imants Kokar has been chi
popularity: 16
followers: 311
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  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
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album: Ave Maria
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  date published: 2008-08-05
  track: Ave Maria (Sergei Rachmaninov)
  track: Ave Maria (Nicolas Gombert)
  track: Ave Maria (Jacques Arcadelt)
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    by artist: Ave Sol Chamber Choir
    by artist: Imants Kokars
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      type: MusicAlbum
      date published: 2008-08-05
    genre: madrigal
    genre: renaissance
    genre: franco-flemish-school
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    additional property: OTSVerifyInstructions
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      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-08T03:20:19Z
    audio: Ave Maria (Jacques Arcadelt)
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  track: Ave Maria (Tomás Luis de Victoria)
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-08T03:53:27Z
    audio: Ave Maria (Tomás Luis de Victoria)
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  track: Ave Maria (Heinrich Poos)
  track: Ave Maria (Leonids Vigners)
  track: Ave Maria (Javier Busto)
album: Jāzeps Vītols: Kora mūzika
album: Emilis Melngailis: Kora mūzika
album: Dainu zemē
album: Ādolfs Ābele: Kora mūzika
album: Pēteris Plakidis: Nolemtība
album: Mūzai
album: Spring Sounds
album: The Organ of Riga Dom: Антонио Вивальди
album: The Messiah
album: Latviešu tautasdziesmas
album: Jāzeps Vītols: Kora dziesmas
album: Imants Kalniņš: Dzejnieks un nāra
album: Tālivaldis Ķeniņš: 5 kora dziesmas
album: Dambis: Jūras dziesmas
album: Baroque Masterminds
album: Renaissance Masterminds
album: The 50 Most Essential Renaissance Masterpieces
album: Classical Choice: Romantic Italy
album: Dziesmu un deju svētki 1970
album: Evolution of Classical Music: The 16th Century
album: Chorbuch European Folksongs (Gemischter Chor)
album: The 99 Most Essential Choral Masterpieces
album: Hi-Fi Classical: Relaxing Masterpieces
album: Georg Friedrich Handel - Best
album: Handel Famous Pieces
album: 88 Holiday Classical Christmas:A Choral Festival. Celebratory Music for Holidays
album: Classical Music for Children
album: Jānis Kalniņš: Kora mūzika
album: Ave Maria (Live)
album: Music from Da Vinci's Time
album: The 99 Most Essential Handel Masterpieces
album: A Classical Universe! 50 Classical Christmas Favorites
album: Classical Wedding
album: Classical Impressions
album: The Voices of Christmas! Christmas With the Choir, Vol. 2
album: 50 Classical Chillout: Emotional
album: Classical Choice: Music For Wedding
album: The Greatest Hits: Johann Sebastian Bach
album: The Handel Christmas Collection
album: Mīlestība
album: Apliecinājums
album: Zvani
album: Ave Maria, Vol. 2
album: Celestial Voices - Timeless Choir Melodies
album: Eternal Choirs - Voices of Masterworks
album: The 50 Most Essential Handel Masterpieces
album: Handel Top 10
album: Best of Händel Classical Baroque
album: Choral Crescendo - Classical Choir Music

Ave Maria (Sergei Rachmaninov)
type: MusicRecording
duration: PT2M33S
duration ms: 153640
explicit: false
by artist: Sergei Rachmaninoff
by artist: Ave Sol Chamber Choir
by artist: Imants Kokars
in album: Ave Maria
  type: MusicAlbum
  date published: 2008-08-05
genre: classical
genre: classical-piano
isrc code: DEB790301949
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additional property: OTSVerificationAPI
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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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1cd27c81fc5fc1a1ac21ad5a6e7c4e2709384e3e380680afe6e931d4eca73a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB790301949.
  date published: 2026-06-13T15:41:10Z
audio: Ave Maria (Sergei Rachmaninov)
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Ave Maria (Nicolas Gombert)
type: MusicRecording
duration: PT3M22S
duration ms: 202533
explicit: false
by artist: Nicolas Gombert
by artist: Ave Sol Chamber Choir
by artist: Imants Kokars
in album: Ave Maria
  type: MusicAlbum
  date published: 2008-08-05
genre: choral
isrc code: DEB790301942
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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additional property: ProofProfileEvidenceStatus
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T05:09:12Z
audio: Ave Maria (Nicolas Gombert)
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Ave Maria (Heinrich Poos)
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by artist: Ave Sol Chamber Choir
by artist: Imants Kokars
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  date published: 2008-08-05
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:38:34Z
audio: Ave Maria (Heinrich Poos)
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Ave Maria (Leonids Vigners)
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duration: PT3M17S
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by artist: Leonids Vigners
by artist: Ave Sol Chamber Choir
by artist: Imants Kokars
in album: Ave Maria
  type: MusicAlbum
  date published: 2008-08-05
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additional property: CopyrightID
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additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5f8ff33645421256cb1f9ae81d3b3d11742f72aa233e923f0506be361479f60a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956351
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956351
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB790301950
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T11:38:34Z
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 956304
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:55:08+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 0x5f8ff33645421256cb1f9ae81d3b3d11742f72aa233e923f0506be361479f60a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB790301950.
  date published: 2026-07-02T11:38:34Z
audio: Ave Maria (Leonids Vigners)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 98.135
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 6
  additional property: Danceability
    type: PropertyValue
    value: 0.216
  additional property: Energy
    type: PropertyValue
    value: 0.111
  additional property: Speechiness
    type: PropertyValue
    value: 0.046
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.029
  additional property: Liveness
    type: PropertyValue
    value: 0.115
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.031
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.613
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Ave Maria (Javier Busto)
type: MusicRecording
duration: PT2M41S
duration ms: 161760
explicit: false
by artist: Javier Busto
by artist: Ave Sol Chamber Choir
by artist: Imants Kokars
in album: Ave Maria
  type: MusicAlbum
  date published: 2008-08-05
isrc code: DEB790301951
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-23T07:35:53+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe0f9bf9505fa0e350dcf4876994f3beff175013b6a7303a82b4ae073b6d4ab1f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956312
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956312
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB790301951
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T05:09:12Z
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 956304
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:55:08+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 0xe0f9bf9505fa0e350dcf4876994f3beff175013b6a7303a82b4ae073b6d4ab1f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB790301951.
  date published: 2026-07-02T05:09:12Z
audio: Ave Maria (Javier Busto)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 143.7
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 6
  additional property: Danceability
    type: PropertyValue
    value: 0.181
  additional property: Energy
    type: PropertyValue
    value: 0.062
  additional property: Speechiness
    type: PropertyValue
    value: 0.047
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.023
  additional property: Liveness
    type: PropertyValue
    value: 0.146
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.036
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.961
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Ave Maria
type: MusicRecording
duration: PT5M51S
duration ms: 351308
explicit: false
by artist: Riga Chamber Choir Ave Sol
by artist: Imants Kokars
in album: Classical Choice: Romantic Italy
  type: MusicAlbum
  date published: 2022-10-14
isrc code: DEKB72072310
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-24T15:59:51+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8b0d44f302e0ff7812a41391a94f8965d1cf5a61461d2623376cabc4df39802d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956312
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956312
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEKB72072310
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T05:09:12Z
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 956304
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:55:08+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 0x8b0d44f302e0ff7812a41391a94f8965d1cf5a61461d2623376cabc4df39802d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEKB72072310.
  date published: 2026-07-02T05:09:12Z
audio: Ave Maria
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 167.719
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.14
  additional property: Energy
    type: PropertyValue
    value: 0.167
  additional property: Speechiness
    type: PropertyValue
    value: 0.047
  additional property: Acousticness
    type: PropertyValue
    value: 0.981
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.044
  additional property: Liveness
    type: PropertyValue
    value: 0.124
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.035
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.19
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Ave Maria
type: MusicRecording
duration: PT6M58S
duration ms: 418666
explicit: false
by artist: Riga Chamber Choir Ave Sol
by artist: Imants Kokars
in album: Celestial Voices - Timeless Choir Melodies
  type: MusicAlbum
  date published: 2024-08-23
isrc code: DEKB72421107
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-23T09:49:29+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc3eed34ebeda12c3bb68af54c8b0285b011a6be7e8b2d12e66412234eb8fff73
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956312
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956312
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEKB72421107
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T05:09:12Z
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 956304
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:55:08+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 0xc3eed34ebeda12c3bb68af54c8b0285b011a6be7e8b2d12e66412234eb8fff73. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEKB72421107.
  date published: 2026-07-02T05:09:12Z
audio: Ave Maria
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 103.546
  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: 0.129
  additional property: Energy
    type: PropertyValue
    value: 0.244
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.934
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.152
  additional property: Liveness
    type: PropertyValue
    value: 0.089
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.067
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.875
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Instrumentalness
type: PropertyValue
value: 0.003

Liveness
type: PropertyValue
value: 0.28

Valence (Positivity)
type: PropertyValue
value: 0.034

Loudness (dB)
type: PropertyValue
value: -27.008

Key Name
type: PropertyValue
value: E

Mode Name
type: PropertyValue
value: Minor

Jāzeps Vītols: Kora mūzika
type: MusicAlbum
date published: 2023-07-26

Emilis Melngailis: Kora mūzika
type: MusicAlbum
date published: 2023-06-01
track: Spēlē jel, spēlmani
  type: MusicRecording
  duration: PT2M34S
  duration ms: 154466
  explicit: false
  by artist: Emilis Melngailis
  by artist: Imants Kokars
  by artist: Riga Chamber Choir Ave Sol
  in album: Emilis Melngailis: Kora mūzika
    type: MusicAlbum
    date published: 2023-06-01
  isrc code: USHM22367643
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T17:49:11+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x64be4d640d5fa088d858a34b1dfdfbf869332b8d87487fa069c40d9ad0cfe6e0
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957145
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957145
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM22367643
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T08:56:20Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64be4d640d5fa088d858a34b1dfdfbf869332b8d87487fa069c40d9ad0cfe6e0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM22367643.
    date published: 2026-07-08T08:56:20Z
  audio: Spēlē jel, spēlmani
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 109.833
    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: 0.262
    additional property: Energy
      type: PropertyValue
      value: 0.035
    additional property: Speechiness
      type: PropertyValue
      value: 0.047
    additional property: Acousticness
      type: PropertyValue
      value: 0.993
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.123
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.153
    additional property: Loudness (dB)
      type: PropertyValue
      value: -32.53
    additional property: Key Name
      type: PropertyValue
      value: Ab
    additional property: Mode Name
      type: PropertyValue
      value: Major

Dainu zemē
type: MusicAlbum
date published: 2023-05-06

Ādolfs Ābele: Kora mūzika
type: MusicAlbum
date published: 2023-04-14

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

Mūzai
type: MusicAlbum
date published: 2023-03-01
track: Latvijā
  type: MusicRecording
  duration: PT2M27S
  duration ms: 147026
  explicit: false
  by artist: Pēteris Barisons
  by artist: Imants Kokars
  by artist: Riga Chamber Choir Ave Sol
  in album: Mūzai
    type: MusicAlbum
    date published: 2023-03-01
  isrc code: USCGJ2387133
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T06:18:05+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x9cadf5665bf88642c66cadca12fff5b6c86d9212e6fb97653d514278f70d429c
  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/USCGJ2387133
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:22:41Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cadf5665bf88642c66cadca12fff5b6c86d9212e6fb97653d514278f70d429c. 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/USCGJ2387133.
    date published: 2026-07-08T03:22:41Z
  audio: Latvijā
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 99.846
    additional property: Musical Key
      type: PropertyValue
      value: 4
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.213
    additional property: Energy
      type: PropertyValue
      value: 0.035
    additional property: Speechiness
      type: PropertyValue
      value: 0.043
    additional property: Acousticness
      type: PropertyValue
      value: 0.991
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.076
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.038
    additional property: Loudness (dB)
      type: PropertyValue
      value: -29.214
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Major

Spring Sounds
type: MusicAlbum
date published: 2016-02-19

The Organ of Riga Dom: Антонио Вивальди
type: MusicAlbum
date published: 2014-06-04

The Messiah
type: MusicAlbum
date published: 2003-01-01

Latviešu tautasdziesmas
type: MusicAlbum
date published: 1990-04-02

Jāzeps Vītols: Kora dziesmas
type: MusicAlbum
date published: 1988-07-26

Imants Kalniņš: Dzejnieks un nāra
type: MusicAlbum
date published: 1980-08-26

Tālivaldis Ķeniņš: 5 kora dziesmas
type: MusicAlbum
date published: 2024-06-07

Dambis: Jūras dziesmas
type: MusicAlbum
date published: 2023-01-01

Baroque Masterminds
type: MusicAlbum
date published: 2012-01-10
track: Le quattro stagioni (The Four Seasons), Op. 8 - Concerto No. 1 in E Major, RV 269, "La primavera" (Spring): I. Allegro
  type: MusicRecording
  duration: PT3M31S
  duration ms: 211866
  explicit: false
  by artist: Antonio Vivaldi
  by artist: Alun Francis
  by artist: Emmy Verhey
  by artist: Camerata Antonio Lucio
  in album: Baroque Masterminds
    type: MusicAlbum
    date published: 2012-01-10
  popularity: 3
  isrc code: SEWDL0721501
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-20T22:27:07+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x266340f846980e11c7624aec24b63c6e16c0e88c88afd3ad3f4ea074c4523d04
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957124
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957124
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEWDL0721501
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:53:27Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
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track: Tafelmusik in B-Flat Major: Conclusion
track: Solomon, HWV 67: The Arrival of the Queen of Sheba
track: Trumpet Voluntary in D Major (The Prince of Denmark's March)
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Sonata No. 12 in D Minor, Op. 5, "La Follia": Variations over an old Spanish Sarabande
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Solomon, HWV 67: The Arrival of the Queen of Sheba
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Le quattro stagioni (The Four Seasons), Op. 8 - Concerto No. 3 in F Major, RV 293, "L'autunno" (Autumn): I. Ballo e canto de villanelli: Allegro
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
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Stabat Mater in F Minor: Introduction
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
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Libro delle Canzoni: Toccata No. 10
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Concerto in G Major for Viola and Orchestra, TWV 51:G9: I. Largo
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Canon in D Major
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Concerto grosso in D Major, Op. 6,4: I. Adagio - Allegro
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  date published: 2026-07-08T03:22:41Z
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Concerto in D Major for Trumpet and Organ: I. Pomposo
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Le quattro stagioni (The Four Seasons), Op. 8 - Concerto No. 4 in F Minor, RV 297, "L'inverno" (Winter): II. Largo
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by artist: Alun Francis
by artist: Emmy Verhey
by artist: Camerata Antonio Lucio
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:38:34Z
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Renaissance Masterminds
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date published: 2012-02-07
track: My Lady Carey's Dompe
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T08:56:20Z
  audio: My Lady Carey's Dompe
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track: Come Again, Sweet Love Doth Now Invite
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T08:56:20Z
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track: Fantasia, "The Leaves Be Green"
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  subject of: OpenTimestamps Proof of Existence
  audio: Fantasia, "The Leaves Be Green"
track: Ave Maria

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OTSVerifyInstructions
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OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
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date published: 2026-07-08T03:53:27Z

Fantasia, "The Leaves Be Green"
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Ave Maria
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by artist: Ave Sol Chamber Choir
by artist: Imants Kokars
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T13:32:09Z
audio: Ave Maria
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The 50 Most Essential Renaissance Masterpieces
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T03:55:08Z
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track: Vil lieber grüsse süsse
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    additional property: Acousticness
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    additional property: Valence (Positivity)
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track: Saltarello
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  by artist: Freiburger Spielleyt
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  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Saltarello
track: Cantigas de Santa Maria: No. 7 - Santa Maria Amar
track: Lamento d'Arianna from the 6th Book of Madrigals: Lasciate mi morire
track: Io tacero (I fall silent)

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OTSBitcoinBlock
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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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OTSTimestamp
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value: 2026-07-02T05:09:12Z

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 0x5c66a6f8b3112ff51b1b0c081591a8381b9503c9be3568de3517e4ea5e711186. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEWDL0531308.
date published: 2026-07-02T05:09:12Z

Saltarello
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additional property: Musical Key
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additional property: Mode (Major/Minor)
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additional property: Time Signature
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additional property: Danceability
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additional property: Energy
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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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additional property: Key Name
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Cantigas de Santa Maria: No. 7 - Santa Maria Amar
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duration: PT5M42S
duration ms: 342506
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by artist: Alfonso X El Sabio
by artist: Leopold Kern
by artist: Freiburger Spielleyt
in album: The 50 Most Essential Renaissance Masterpieces
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genre: medieval
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additional property: OTSVerificationAPI
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Cantigas de Santa Maria: No. 7 - Santa Maria Amar
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Lamento d'Arianna from the 6th Book of Madrigals: Lasciate mi morire
type: MusicRecording
duration: PT1M39S
duration ms: 99102
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by artist: Claudio Monteverdi
by artist: Lege Artis Chamber Choir
by artist: Boris Abalyan
in album: The 50 Most Essential Renaissance Masterpieces
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  date published: 2011-04-19
genre: classical
genre: early-music
genre: baroque
genre: italian-baroque
genre: italian-renaissance
genre: madrigal
genre: renaissance
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additional property: CopyrightID
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864a6f5dcb23d5538de9a3ee40ef45f8395a6142633460de5a8c9c0e4ecec0c5. 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/SEWDL6019134.
  date published: 2026-07-08T03:22:41Z
audio: Lamento d'Arianna from the 6th Book of Madrigals: Lasciate mi morire
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Io tacero (I fall silent)
type: MusicRecording
duration: PT3M1S
duration ms: 181000
explicit: false
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by artist: Lege Artis Chamber Choir
by artist: Boris Abalyan
in album: The 50 Most Essential Renaissance Masterpieces
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: Io tacero (I fall silent)
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Classical Choice: Romantic Italy
type: MusicAlbum
date published: 2022-10-14
track: Gianni Schicchi: "O mio babbino caro" (Lauretta)
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  additional property: OTSVerificationAPI
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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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    date published: 2026-07-08T03:53:27Z
  audio: Gianni Schicchi: "O mio babbino caro" (Lauretta)
    type: AudioObject
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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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track: Ave Maria

Dziesmu un deju svētki 1970
type: MusicAlbum
date published: 1970-03-13

Evolution of Classical Music: The 16th Century
type: MusicAlbum
date published: 2012-05-08
track: From Liber leviorum Carminum, Antwerp 1572: Pavane sur la bataille
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    date published: 2026-07-07T16:07:00Z
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    additional property: Valence (Positivity)
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track: Ave Maria (Jacques Arcadelt)
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  by artist: Ave Sol Chamber Choir
  by artist: Imants Kokars
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  genre: renaissance
  genre: franco-flemish-school
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  additional property: OTSVerifyInstructions
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    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-06-13T15:41:10Z
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    date published: 2026-07-02T03:55:08Z
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  subject of: OpenTimestamps Proof of Existence
  audio: Mass in B Minor, BWV 232: V. Gloria: Et in terra pax
track: Mass in B Minor, BWV 232: IX. Gloria: Qui tollis peccata mundi
track: Mass in B Minor, BWV 232: XIII. Credo: Credo in unum Deum
track: Mass in B Minor, BWV 232: XVI. Credo: Et incarnatus est
track: Mass in B Minor, BWV 232: XVII. Credo: Crucifixus
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OpenTimestamps Proof of Existence
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date published: 2026-07-02T03:55:08Z

Mass in B Minor, BWV 232: V. Gloria: Et in terra pax
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Mass in B Minor, BWV 232: IX. Gloria: Qui tollis peccata mundi
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
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Mass in B Minor, BWV 232: XIII. Credo: Credo in unum Deum
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
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  date published: 2026-07-02T05:09:12Z
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audio: Mass in B Minor, BWV 232: XVII. Credo: Crucifixus
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Mass in B Minor, BWV 232: XVIII. Credo: Et resurrexit
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Mass in B Minor, BWV 232: XXI. Credo: Et exspecto
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Mass in B Minor, BWV 232: XXII. Sanctus
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Mass in B Minor, BWV 232: XXV. Osanna in excelsis
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Mass in B Minor, BWV 232: XXVII. Dona nobis pacem
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Hi-Fi Classical: Relaxing Masterpieces
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The 99 Most Essential Handel Masterpieces
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