Harper Knight
type: MusicGroup
popularity: 2
followers: 19
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2891daa37852fdbe2a4d187dc211f7508eaf733339b14546fe74187fe8cce2ea
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954533
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954533
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a28b47de-3be2-4fd6-a779-ab36ed46519a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a28b47de-3be2-4fd6-a779-ab36ed46519a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a28b47de-3be2-4fd6-a779-ab36ed46519a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T08:57:02Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2891daa37852fdbe2a4d187dc211f7508eaf733339b14546fe74187fe8cce2ea","name":"Harper Knight","registered_at":"2026-06-20T06:36:27Z","symbol":"NIM1541276","token_address":"0x6f5a8b4f85c64a29c43c27d8cb0dab84a4b55afe","type":"artist","uuid":"a28b47de-3be2-4fd6-a779-ab36ed46519a"}
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 0x2891daa37852fdbe2a4d187dc211f7508eaf733339b14546fe74187fe8cce2ea. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a28b47de-3be2-4fd6-a779-ab36ed46519a.json and https://artists.proofprofile.net/proofs/artist/a28b47de-3be2-4fd6-a779-ab36ed46519a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T08:57:02Z
  text: {"copyright_id":"0x2891daa37852fdbe2a4d187dc211f7508eaf733339b14546fe74187fe8cce2ea","name":"Harper Knight","registered_at":"2026-06-20T06:36:27Z","symbol":"NIM1541276","token_address":"0x6f5a8b4f85c64a29c43c27d8cb0dab84a4b55afe","type":"artist","uuid":"a28b47de-3be2-4fd6-a779-ab36ed46519a"}
album: The Flamingo Chain
  type: MusicAlbum
  date published: 2022-02-14
  track: The Flamingo Chain
    type: MusicRecording
    duration: PT0M41S
    duration ms: 41746
    explicit: false
    by artist: Harper Knight
    in album: The Flamingo Chain
      type: MusicAlbum
      date published: 2022-02-14
    isrc code: QZTLA2229375
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T19:21:45+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe364e490ee88b7055ed0c2337c14e0e11389a27dc51d3061346c7fe3cba2adb5
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958602
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958602
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTLA2229375
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T19:28:16Z
    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 0xe364e490ee88b7055ed0c2337c14e0e11389a27dc51d3061346c7fe3cba2adb5. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/QZTLA2229375.
      date published: 2026-07-18T19:28:16Z
    audio: The Flamingo Chain
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 142.792
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.489
      additional property: Energy
        type: PropertyValue
        value: 0.122
      additional property: Speechiness
        type: PropertyValue
        value: 0.19
      additional property: Acousticness
        type: PropertyValue
        value: 0.934
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.784
      additional property: Liveness
        type: PropertyValue
        value: 0.136
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.714
      additional property: Loudness (dB)
        type: PropertyValue
        value: -28.944
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: The Pain Peninsula
  type: MusicAlbum
  date published: 2022-02-14
album: Singar Atoll
  type: MusicAlbum
  date published: 2022-02-14
album: Smithsronto Refuge
  type: MusicAlbum
  date published: 2022-02-14