Leigh Kaplan
type: MusicGroup
genre: ragtime
popularity: 5
followers: 23
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x98156a546074afe2583254f168bbe643371234f16b750d417a647ca2090e41a9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954019
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954019
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/37760bdd-c699-4041-951e-3304bb084fe7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/37760bdd-c699-4041-951e-3304bb084fe7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/37760bdd-c699-4041-951e-3304bb084fe7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T23:44:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x98156a546074afe2583254f168bbe643371234f16b750d417a647ca2090e41a9","name":"Leigh Kaplan","registered_at":"2026-06-16T08:52:19Z","symbol":"NIM1000512","token_address":"0xbabc700fb04ed8eb5b08a6d28f38d67e288529ab","type":"artist","uuid":"37760bdd-c699-4041-951e-3304bb084fe7"}
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 0x98156a546074afe2583254f168bbe643371234f16b750d417a647ca2090e41a9. 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/37760bdd-c699-4041-951e-3304bb084fe7.json and https://artists.proofprofile.net/proofs/artist/37760bdd-c699-4041-951e-3304bb084fe7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x98156a546074afe2583254f168bbe643371234f16b750d417a647ca2090e41a9","name":"Leigh Kaplan","registered_at":"2026-06-16T08:52:19Z","symbol":"NIM1000512","token_address":"0xbabc700fb04ed8eb5b08a6d28f38d67e288529ab","type":"artist","uuid":"37760bdd-c699-4041-951e-3304bb084fe7"}
album: Dring, M.: Colour Suite / 3 Pieces / Niehaus, L.: Shades of Dring / Pastel Panache
  type: MusicAlbum
  date published: 1996-01-01
  track: Colour Suite: IV. Blue air
    type: MusicRecording
    duration: PT2M49S
    duration ms: 169800
    explicit: false
    by artist: Leigh Kaplan
    in album: Dring, M.: Colour Suite / 3 Pieces / Niehaus, L.: Shades of Dring / Pastel Panache
      type: MusicAlbum
      date published: 1996-01-01
    genre: ragtime
    isrc code: USJLU0810828
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T18:44:00+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x66379ddc4051ec3f1b4f376c45db93a024ae863ab4a09fab2c9094f5f5d5458c
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958316
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958316
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJLU0810828
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T21:46:06Z
    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 0x66379ddc4051ec3f1b4f376c45db93a024ae863ab4a09fab2c9094f5f5d5458c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:46:06Z), 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/USJLU0810828.
      date published: 2026-07-16T21:46:06Z
    audio: Colour Suite: IV. Blue air
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 83.834
      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
        value: 0.461
      additional property: Energy
        type: PropertyValue
        value: 0.094
      additional property: Speechiness
        type: PropertyValue
        value: 0.047
      additional property: Acousticness
        type: PropertyValue
        value: 0.994
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.946
      additional property: Liveness
        type: PropertyValue
        value: 0.109
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.089
      additional property: Loudness (dB)
        type: PropertyValue
        value: -21.609
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Dring, M.: Colour Suite / 3 Pieces / Niehaus, L.: Shades of Dring / Pastel Panache
  type: MusicAlbum
  date published: 1996-01-01