Kazakh State String Quartet
type: MusicGroup
genre: chamber music
popularity: 8
followers: 469
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSTimestamp
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdae2bfbbd3caff4201083b21edd58da7aefc450dd33f2ee890d97a6b78639da. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6d04e9be-008f-4cc0-80f2-faae97f67f8a.json and https://artists.proofprofile.net/proofs/artist/6d04e9be-008f-4cc0-80f2-faae97f67f8a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xcdae2bfbbd3caff4201083b21edd58da7aefc450dd33f2ee890d97a6b78639da","name":"Kazakh State String Quartet","registered_at":"2026-06-17T03:37:27Z","symbol":"NIM1268951","token_address":"0x74d7df4f2a4227e6954a1920fc0fb8f7e4eb21dd","type":"artist","uuid":"6d04e9be-008f-4cc0-80f2-faae97f67f8a"}
album: Kazakh Classical Music: String Quartets
  type: MusicAlbum
  date published: 2015
album: Kazakh Classical Music: String Quartets
  type: MusicAlbum
  date published: 2015
album: Music for String Quartet by Kazakh Composers
  type: MusicAlbum
  date published: 2017-03-03
album: Great Steppe Melodies from Kazakh
  type: MusicAlbum
  date published: 2018-04-06
album: Great Steppe Melodies from Kazakh
  type: MusicAlbum
  date published: 2018-04-06
  track: Saltanat
    type: MusicRecording
    duration: PT4M25S
    duration ms: 265560
    explicit: false
    by artist: Kazakh State String Quartet
    in album: Great Steppe Melodies from Kazakh
      type: MusicAlbum
      date published: 2018-04-06
    genre: chamber music
    isrc code: CH1221550204
    additional property: CopyrightID
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    additional property: OTSVerificationAPI
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    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T03:26:26Z
    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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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb120be8e79a90952d505938c12ecf027d840aa76cc7a48a8f7d18bff6e4a2e. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-17T03:26:26Z), 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/CH1221550204.
      date published: 2026-07-17T03:26:26Z
    audio: Saltanat
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 97.521
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
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      additional property: Energy
        type: PropertyValue
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      additional property: Speechiness
        type: PropertyValue
        value: 0.122
      additional property: Acousticness
        type: PropertyValue
        value: 0.98
      additional property: Instrumentalness
        type: PropertyValue
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      additional property: Liveness
        type: PropertyValue
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      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.679
      additional property: Loudness (dB)
        type: PropertyValue
        value: -15.46
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Minor
  track: Kos Basar
    type: MusicRecording
    duration: PT2M3S
    duration ms: 123560
    explicit: false
    by artist: Kazakh State String Quartet
    in album: Great Steppe Melodies from Kazakh
      type: MusicAlbum
      date published: 2018-04-06
    genre: chamber music
    isrc code: CH1221550205
    additional property: CopyrightID
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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 0x9fc61176db69c7254f0e6793e5b88fcdac7ce8aad0067b00a062d99489a7a8d4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CH1221550205.
      date published: 2026-07-05T01:12:41Z
    audio: Kos Basar
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 95.859
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
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      additional property: Energy
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      additional property: Speechiness
        type: PropertyValue
        value: 0.069
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name

Acousticness
type: PropertyValue
value: 0.99

Instrumentalness
type: PropertyValue
value: 0.921

Liveness
type: PropertyValue
value: 0.149

Valence (Positivity)
type: PropertyValue
value: 0.587

Loudness (dB)
type: PropertyValue
value: -16.183

Key Name
type: PropertyValue
value: A

Mode Name
type: PropertyValue
value: Minor