Jisk Lieftink
type: MusicGroup
popularity: 9
followers: 129
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7facd1baff53c11b3d19f41e1b8da0030e7407e5a4371afcfa26c2602c05bab6
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/5c206b60-e763-4ce9-bf6c-cd72717bc25a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5c206b60-e763-4ce9-bf6c-cd72717bc25a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5c206b60-e763-4ce9-bf6c-cd72717bc25a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7facd1baff53c11b3d19f41e1b8da0030e7407e5a4371afcfa26c2602c05bab6","name":"Jisk Lieftink","registered_at":"2026-06-16T21:48:29Z","symbol":"NIM1185693","token_address":"0x53379252a5c9ab3187b9ed15f0f645e42681d1a3","type":"artist","uuid":"5c206b60-e763-4ce9-bf6c-cd72717bc25a"}
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 0x7facd1baff53c11b3d19f41e1b8da0030e7407e5a4371afcfa26c2602c05bab6. 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/5c206b60-e763-4ce9-bf6c-cd72717bc25a.json and https://artists.proofprofile.net/proofs/artist/5c206b60-e763-4ce9-bf6c-cd72717bc25a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x7facd1baff53c11b3d19f41e1b8da0030e7407e5a4371afcfa26c2602c05bab6","name":"Jisk Lieftink","registered_at":"2026-06-16T21:48:29Z","symbol":"NIM1185693","token_address":"0x53379252a5c9ab3187b9ed15f0f645e42681d1a3","type":"artist","uuid":"5c206b60-e763-4ce9-bf6c-cd72717bc25a"}
album: Journey of the Birds
  type: MusicAlbum
  date published: 2022-06-03
album: Ocean Waltz
  type: MusicAlbum
  date published: 2024-08-30
album: A Cat's Dance
  type: MusicAlbum
  date published: 2025-01-10
album: Lullaby
  type: MusicAlbum
  date published: 2025-02-20
  track: Lullaby
    type: MusicRecording
    duration: PT3M32S
    duration ms: 212318
    explicit: false
    by artist: Jisk Lieftink
    in album: Lullaby
      type: MusicAlbum
      date published: 2025-02-20
    isrc code: NL5UZ2501550
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T23:04:36+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x656c2b62b3f2c0d9ff86e37ebfb243a49efc8c3fef62b7ddec3d4e7d0632bc32
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958468
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958468
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL5UZ2501550
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T00:27:51Z
    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 0x656c2b62b3f2c0d9ff86e37ebfb243a49efc8c3fef62b7ddec3d4e7d0632bc32. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/NL5UZ2501550.
      date published: 2026-07-18T00:27:51Z
    audio: Lullaby
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 172.374
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.24
      additional property: Energy
        type: PropertyValue
        value: 0.161
      additional property: Speechiness
        type: PropertyValue
        value: 0.038
      additional property: Acousticness
        type: PropertyValue
        value: 0.975
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.911
      additional property: Liveness
        type: PropertyValue
        value: 0.108
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.143
      additional property: Loudness (dB)
        type: PropertyValue
        value: -21.084
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: The Little Snowdrop
  type: MusicAlbum
  date published: 2025-03-13
album: Ocean Waltz (Remastered 2025)
  type: MusicAlbum
  date published: 2025-03-27