Luke Hardcastle
type: MusicGroup
popularity: 5
followers: 43
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x29d2cd30a17ff829edd1c4cb1b862ded3c840dc5ae7e4259ed7832c72b2722fd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954742
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954742
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fdf8bc60-80ba-4150-be1c-dd60b3f3ff4a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fdf8bc60-80ba-4150-be1c-dd60b3f3ff4a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fdf8bc60-80ba-4150-be1c-dd60b3f3ff4a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T20:46:40Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x29d2cd30a17ff829edd1c4cb1b862ded3c840dc5ae7e4259ed7832c72b2722fd","name":"Luke Hardcastle","registered_at":"2026-06-21T18:10:41Z","symbol":"NIM1997435","token_address":"0x2eb0b0f0856f2e1a2b4799aa8d251ed0950fd747","type":"artist","uuid":"fdf8bc60-80ba-4150-be1c-dd60b3f3ff4a"}
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 0x29d2cd30a17ff829edd1c4cb1b862ded3c840dc5ae7e4259ed7832c72b2722fd. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fdf8bc60-80ba-4150-be1c-dd60b3f3ff4a.json and https://artists.proofprofile.net/proofs/artist/fdf8bc60-80ba-4150-be1c-dd60b3f3ff4a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T20:46:40Z
  text: {"copyright_id":"0x29d2cd30a17ff829edd1c4cb1b862ded3c840dc5ae7e4259ed7832c72b2722fd","name":"Luke Hardcastle","registered_at":"2026-06-21T18:10:41Z","symbol":"NIM1997435","token_address":"0x2eb0b0f0856f2e1a2b4799aa8d251ed0950fd747","type":"artist","uuid":"fdf8bc60-80ba-4150-be1c-dd60b3f3ff4a"}
album: Prairie Sky
  type: MusicAlbum
  date published: 2016-06-18
  track: Prairie Sky
    type: MusicRecording
    duration: PT4M24S
    duration ms: 264000
    explicit: false
    by artist: Luke Hardcastle
    in album: Prairie Sky
      type: MusicAlbum
      date published: 2016-06-18
    isrc code: USDY41671930
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T02:57:47+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xf8fb39c5566a5676d7df4a72db2240179df8e047aafb392a7c137380a716e9be
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958690
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958690
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDY41671930
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T07:14:39Z
    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 0xf8fb39c5566a5676d7df4a72db2240179df8e047aafb392a7c137380a716e9be. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USDY41671930.
      date published: 2026-07-19T07:14:39Z
    audio: Prairie Sky
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 100.109
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.564
      additional property: Energy
        type: PropertyValue
        value: 0.916
      additional property: Speechiness
        type: PropertyValue
        value: 0.03
      additional property: Acousticness
        type: PropertyValue
        value: 0.031
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.194
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.442
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.074
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Make Believe
  type: MusicAlbum
  date published: 2023-12-01
  track: Make Believe
    type: MusicRecording
    duration: PT3M11S
    duration ms: 191703
    explicit: false
    by artist: Luke Hardcastle
    in album: Make Believe
      type: MusicAlbum
      date published: 2023-12-01
    isrc code: USY282311745
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T01:00:20+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x8cd6b40ec43fc83afd201da44315fcd181de7c66cd26a69d76bc1e441fa79656
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956639
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956639
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USY282311745
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T11:19:20Z
    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 0x8cd6b40ec43fc83afd201da44315fcd181de7c66cd26a69d76bc1e441fa79656. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USY282311745.
      date published: 2026-07-04T11:19:20Z
    audio: Make Believe
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 159.884
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.451
      additional property: Energy
        type: PropertyValue
        value: 0.492
      additional property: Speechiness
        type: PropertyValue
        value: 0.031
      additional property: Acousticness
        type: PropertyValue
        value: 0.583
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.084
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.084
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name

Loudness (dB)
type: PropertyValue
value: -7.003

Key Name
type: PropertyValue
value: G

Mode Name
type: PropertyValue
value: Major