John Kanaka & The Jack Tars
type: MusicGroup
genre: medieval
genre: medieval metal
popularity: 2
followers: 240
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x96f4fd04437551059737423d783c9ba6844e4c4c3a1aa1a49fd92a5fda0f450c
additional property: OTSHash
additional property: OTSBitcoinBlock
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  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/a3f6601c-b0dc-49fa-8dad-715da670328a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a3f6601c-b0dc-49fa-8dad-715da670328a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a3f6601c-b0dc-49fa-8dad-715da670328a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T08:57:02Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x96f4fd04437551059737423d783c9ba6844e4c4c3a1aa1a49fd92a5fda0f450c","name":"John Kanaka & The Jack Tars","registered_at":"2026-06-20T06:46:57Z","symbol":"NIM1545214","token_address":"0x7568d64edf5fc4cdb4a346f719e9ca8f3d30780a","type":"artist","uuid":"a3f6601c-b0dc-49fa-8dad-715da670328a"}
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 0x96f4fd04437551059737423d783c9ba6844e4c4c3a1aa1a49fd92a5fda0f450c. 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/a3f6601c-b0dc-49fa-8dad-715da670328a.json and https://artists.proofprofile.net/proofs/artist/a3f6601c-b0dc-49fa-8dad-715da670328a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T08:57:02Z
  text: {"copyright_id":"0x96f4fd04437551059737423d783c9ba6844e4c4c3a1aa1a49fd92a5fda0f450c","name":"John Kanaka & The Jack Tars","registered_at":"2026-06-20T06:46:57Z","symbol":"NIM1545214","token_address":"0x7568d64edf5fc4cdb4a346f719e9ca8f3d30780a","type":"artist","uuid":"a3f6601c-b0dc-49fa-8dad-715da670328a"}
album: Auf das Leben
  type: MusicAlbum
  date published: 2024-03-17
  track: Auf das Leben
    type: MusicRecording
    duration: PT4M43S
    duration ms: 283330
    explicit: false
    by artist: John Kanaka & The Jack Tars
    in album: Auf das Leben
      type: MusicAlbum
      date published: 2024-03-17
    genre: medieval
    genre: medieval metal
    isrc code: QZHN52441776
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
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    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x540fe7ad341f1a3bced78ee23e9a349d4f360b78aa83263e15fc81f6d9f25d43
    additional property: OTSHash
    additional property: OTSBitcoinBlock
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      value: 958827
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958827
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN52441776
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T07:24:25Z
    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 0x540fe7ad341f1a3bced78ee23e9a349d4f360b78aa83263e15fc81f6d9f25d43. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:24:25Z), 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/QZHN52441776.
      date published: 2026-07-20T07:24:25Z
    audio: Auf das Leben
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 83.26
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.502
      additional property: Energy
        type: PropertyValue
        value: 0.326
      additional property: Speechiness
        type: PropertyValue
        value: 0.089
      additional property: Acousticness
        type: PropertyValue
        value: 0.746
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.197
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.493
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.936
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Go to Sea no more
  type: MusicAlbum
  date published: 2024-04-04