Silk String Quartet
type: MusicGroup
genre: japanese classical
genre: traditional music
popularity: 6
followers: 260
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x8a3ce7f7de385f732b3e5c73dcd1d045c843f211dbb6b414a99bbd4cc3b416f1
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 953915
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953915
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/19bd0c63-13bb-406a-8006-b2ccc842ccb3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/19bd0c63-13bb-406a-8006-b2ccc842ccb3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/19bd0c63-13bb-406a-8006-b2ccc842ccb3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T08:36:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8a3ce7f7de385f732b3e5c73dcd1d045c843f211dbb6b414a99bbd4cc3b416f1","name":"Silk String Quartet","registered_at":"2026-06-15T22:24:31Z","symbol":"NIM0850568","token_address":"0x407649f1eb437c78aca300ac75f057494ba6b336","type":"artist","uuid":"19bd0c63-13bb-406a-8006-b2ccc842ccb3"}
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 0x8a3ce7f7de385f732b3e5c73dcd1d045c843f211dbb6b414a99bbd4cc3b416f1. Chain 2 (Bitcoin): anchored in block 953915 (2026-06-16T08:36:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/19bd0c63-13bb-406a-8006-b2ccc842ccb3.json and https://artists.proofprofile.net/proofs/artist/19bd0c63-13bb-406a-8006-b2ccc842ccb3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T08:36:32Z
  text: {"copyright_id":"0x8a3ce7f7de385f732b3e5c73dcd1d045c843f211dbb6b414a99bbd4cc3b416f1","name":"Silk String Quartet","registered_at":"2026-06-15T22:24:31Z","symbol":"NIM0850568","token_address":"0x407649f1eb437c78aca300ac75f057494ba6b336","type":"artist","uuid":"19bd0c63-13bb-406a-8006-b2ccc842ccb3"}
album: Silk String Quartet: Contemporary and Traditional Chinese Music
  type: MusicAlbum
  date published: 2007-01-01
album: Silk String Quartet: Contemporary and Traditional Chinese Music
  type: MusicAlbum
  date published: 2007-01-01
  track: Autumn Moon over the Still Lake
    type: MusicRecording
    duration: PT6M29S
    duration ms: 389000
    explicit: false
    by artist: Silk String Quartet
    in album: Silk String Quartet: Contemporary and Traditional Chinese Music
      type: MusicAlbum
      date published: 2007-01-01
    genre: japanese classical
    genre: traditional music
    isrc code: GBCKG0700763
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
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    additional property: CopyrightChainExplorerURL
      type: PropertyValue
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956474
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCKG0700763
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T08:56:35Z
    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 0xefdef35c629c657af6221d8ee17bddc1d8c570fb61d2bb355d15573ab4e2e2fb. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBCKG0700763.
      date published: 2026-07-03T08:56:35Z
    audio: Autumn Moon over the Still Lake
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 103.222
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.469
      additional property: Energy
        type: PropertyValue
        value: 0.302
      additional property: Speechiness
        type: PropertyValue
        value: 0.03
      additional property: Acousticness
        type: PropertyValue
        value: 0.974
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.748
      additional property: Liveness
        type: PropertyValue
        value: 0.106
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.543
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.598
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major