Arthur Kempel
type: MusicGroup
genre: space music
popularity: 5
followers: 162
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x516fa34f671b40fd728fd8967a46a254d69e458d0c477ed672e674bcb50636c6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/71fd072b-c062-47a2-b44a-c441dbccec95.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/71fd072b-c062-47a2-b44a-c441dbccec95.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/71fd072b-c062-47a2-b44a-c441dbccec95
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x516fa34f671b40fd728fd8967a46a254d69e458d0c477ed672e674bcb50636c6","name":"Arthur Kempel","registered_at":"2026-06-17T05:20:50Z","symbol":"NIM1293629","token_address":"0x9405521cc5863bb96f89caa32348f430ed96f0b7","type":"artist","uuid":"71fd072b-c062-47a2-b44a-c441dbccec95"}
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 0x516fa34f671b40fd728fd8967a46a254d69e458d0c477ed672e674bcb50636c6. 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/71fd072b-c062-47a2-b44a-c441dbccec95.json and https://artists.proofprofile.net/proofs/artist/71fd072b-c062-47a2-b44a-c441dbccec95.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x516fa34f671b40fd728fd8967a46a254d69e458d0c477ed672e674bcb50636c6","name":"Arthur Kempel","registered_at":"2026-06-17T05:20:50Z","symbol":"NIM1293629","token_address":"0x9405521cc5863bb96f89caa32348f430ed96f0b7","type":"artist","uuid":"71fd072b-c062-47a2-b44a-c441dbccec95"}
album: Double Impact - Original Motion Picture Soundtrack
  type: MusicAlbum
  date published: 2012-04-25
  track: Feel The Impact
    type: MusicRecording
    duration: PT3M1S
    duration ms: 181626
    explicit: false
    by artist: Arthur Kempel
    in album: Double Impact - Original Motion Picture Soundtrack
      type: MusicAlbum
      date published: 2012-04-25
    genre: space music
    isrc code: QMT281201115
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T04:05:02+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd2c8cae2d66f36a53d60e5409103fdc1a15fbd4c5bda433bbec3d1c81de957d0
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958362
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958362
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMT281201115
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T04:32:48Z
    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 0xd2c8cae2d66f36a53d60e5409103fdc1a15fbd4c5bda433bbec3d1c81de957d0. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QMT281201115.
      date published: 2026-07-17T04:32:48Z
    audio: Feel The Impact
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 113.903
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.747
      additional property: Energy
        type: PropertyValue
        value: 0.566
      additional property: Speechiness
        type: PropertyValue
        value: 0.046
      additional property: Acousticness
        type: PropertyValue
        value: 0.004
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.76
      additional property: Liveness
        type: PropertyValue
        value: 0.247
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.775
      additional property: Loudness (dB)
        type: PropertyValue
        value: -18.77
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Double Impact - Original Motion Picture Soundtrack
  type: MusicAlbum
  date published: 2012-04-25
album: The Arrival - Original Motion Picture Soundtrack
  type: MusicAlbum
  date published: 2012-04-25