Jack de Keyzer
type: MusicGroup
genre: blues
genre: blues rock
genre: modern blues
description: Jack de Keyzer is a British-born Canadian blues guitarist, vocalist, songwriter and producer. He has twice won the Juno Award, Canada's highest musical honour and seven times received Maple Blues Awar
popularity: 4
followers: 50
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x42764aa554094f703ce251e5feff2f5146de11c5c72f737242882634e229891e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953864
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953864
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/05021196-c439-46f1-9b09-ed6c5e2d81b6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/05021196-c439-46f1-9b09-ed6c5e2d81b6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/05021196-c439-46f1-9b09-ed6c5e2d81b6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T00:30:31Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x42764aa554094f703ce251e5feff2f5146de11c5c72f737242882634e229891e","name":"Jack de Keyzer","registered_at":"2026-06-15T15:16:27Z","symbol":"NIM0748445","token_address":"0x0d12c037b3f5f5e06ae57b9ead97bbf6ef805720","type":"artist","uuid":"05021196-c439-46f1-9b09-ed6c5e2d81b6"}
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 0x42764aa554094f703ce251e5feff2f5146de11c5c72f737242882634e229891e. Chain 2 (Bitcoin): anchored in block 953864 (2026-06-16T00:30:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05021196-c439-46f1-9b09-ed6c5e2d81b6.json and https://artists.proofprofile.net/proofs/artist/05021196-c439-46f1-9b09-ed6c5e2d81b6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T00:30:31Z
  text: {"copyright_id":"0x42764aa554094f703ce251e5feff2f5146de11c5c72f737242882634e229891e","name":"Jack de Keyzer","registered_at":"2026-06-15T15:16:27Z","symbol":"NIM0748445","token_address":"0x0d12c037b3f5f5e06ae57b9ead97bbf6ef805720","type":"artist","uuid":"05021196-c439-46f1-9b09-ed6c5e2d81b6"}
album: That's The Way
  type: MusicAlbum
  date published: 2023-05-30
album: Forever
  type: MusicAlbum
  date published: 2023-06-25
album: Soul Lover
  type: MusicAlbum
  date published: 2023-10-13
album: 6 String Lover
  type: MusicAlbum
  date published: 2023-11-12
  track: Soul Lover
    type: MusicRecording
    duration: PT4M25S
    duration ms: 265613
    explicit: false
    by artist: Jack de Keyzer
    in album: 6 String Lover
      type: MusicAlbum
      date published: 2023-11-12
    genre: blues
    genre: blues rock
    genre: modern blues
    isrc code: QZTBD2388522
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T23:56:37+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x1c69f76ecb23acab680f1ee7945b5e0582c9589510b9ac80d41389bca1de1d76
    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/QZTBD2388522
    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 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 0x1c69f76ecb23acab680f1ee7945b5e0582c9589510b9ac80d41389bca1de1d76. 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/QZTBD2388522.
      date published: 2026-07-18T00:27:51Z
    audio: Soul Lover
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 112.056
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.653
      additional property: Energy
        type: PropertyValue
        value: 0.692
      additional property: Speechiness
        type: PropertyValue
        value: 0.032
      additional property: Acousticness
        type: PropertyValue
        value: 0.639
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.177
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.857
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.45
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Minor