Sonny Clark Memorial Quartet
type: MusicGroup
genre: avant-garde
genre: free jazz
genre: hard bop
popularity: 4
followers: 430
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5c16655b2db8054c25f0a2ada865d06778d08e766a90a8cdb27b4431f884fb93
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954603
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954603
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c26c75c0-5431-4b38-b04d-b7193d97b944.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c26c75c0-5431-4b38-b04d-b7193d97b944.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c26c75c0-5431-4b38-b04d-b7193d97b944
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T21:47:54Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5c16655b2db8054c25f0a2ada865d06778d08e766a90a8cdb27b4431f884fb93","name":"Sonny Clark Memorial Quartet","registered_at":"2026-06-20T19:58:28Z","symbol":"NIM1699692","token_address":"0x5e72ab0e8c6ff55b52b7317186a9011b724ef819","type":"artist","uuid":"c26c75c0-5431-4b38-b04d-b7193d97b944"}
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 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c16655b2db8054c25f0a2ada865d06778d08e766a90a8cdb27b4431f884fb93. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c26c75c0-5431-4b38-b04d-b7193d97b944.json and https://artists.proofprofile.net/proofs/artist/c26c75c0-5431-4b38-b04d-b7193d97b944.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T21:47:54Z
  text: {"copyright_id":"0x5c16655b2db8054c25f0a2ada865d06778d08e766a90a8cdb27b4431f884fb93","name":"Sonny Clark Memorial Quartet","registered_at":"2026-06-20T19:58:28Z","symbol":"NIM1699692","token_address":"0x5e72ab0e8c6ff55b52b7317186a9011b724ef819","type":"artist","uuid":"c26c75c0-5431-4b38-b04d-b7193d97b944"}
album: Voodoo
  type: MusicAlbum
  date published: 1986-12-28
  track: Cool Struttin'
    type: MusicRecording
    duration: PT5M30S
    duration ms: 330200
    explicit: false
    by artist: Sonny Clark Memorial Quartet
    in album: Voodoo
      type: MusicAlbum
      date published: 1986-12-28
    genre: avant-garde
    genre: free jazz
    genre: hard bop
    isrc code: ITC000850712
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-06T03:48:10+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd8b1c782210a2c6836bd6c7fcf7a16329540c92f807df4230d15f1ba87bbdf4d
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956889
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956889
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITC000850712
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T06:56:49Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b1c782210a2c6836bd6c7fcf7a16329540c92f807df4230d15f1ba87bbdf4d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ITC000850712.
      date published: 2026-07-06T06:56:49Z
    audio: Cool Struttin'
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 134.553
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.627
      additional property: Energy
        type: PropertyValue
        value: 0.258
      additional property: Speechiness
        type: PropertyValue
        value: 0.039
      additional property: Acousticness
        type: PropertyValue
        value: 0.404
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.473
      additional property: Liveness
        type: PropertyValue
        value: 0.11
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.339
      additional property: Loudness (dB)
        type: PropertyValue
        value: -20.096
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Voodoo
  type: MusicAlbum
  date published: 1986-12-28