Matthew John Duncan
type: MusicGroup
popularity: 6
followers: 500
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x07eead4d927e35238d70159fe8fbcae0ecd8b834ef98fc6a58ae8891df811699
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953885
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953885
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0b4dcf44-8924-4ff0-8e55-5d1683d225ad.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0b4dcf44-8924-4ff0-8e55-5d1683d225ad.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0b4dcf44-8924-4ff0-8e55-5d1683d225ad
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T04:12:47Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x07eead4d927e35238d70159fe8fbcae0ecd8b834ef98fc6a58ae8891df811699","name":"Matthew John Duncan","registered_at":"2026-06-15T17:30:41Z","symbol":"NIM0780497","token_address":"0xc985770563c36e0ba6686d5f5fa7888246aabaa8","type":"artist","uuid":"0b4dcf44-8924-4ff0-8e55-5d1683d225ad"}
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 0x07eead4d927e35238d70159fe8fbcae0ecd8b834ef98fc6a58ae8891df811699. Chain 2 (Bitcoin): anchored in block 953885 (2026-06-16T04:12:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0b4dcf44-8924-4ff0-8e55-5d1683d225ad.json and https://artists.proofprofile.net/proofs/artist/0b4dcf44-8924-4ff0-8e55-5d1683d225ad.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-16T04:12:47Z
  text: {"copyright_id":"0x07eead4d927e35238d70159fe8fbcae0ecd8b834ef98fc6a58ae8891df811699","name":"Matthew John Duncan","registered_at":"2026-06-15T17:30:41Z","symbol":"NIM0780497","token_address":"0xc985770563c36e0ba6686d5f5fa7888246aabaa8","type":"artist","uuid":"0b4dcf44-8924-4ff0-8e55-5d1683d225ad"}
album: Coming Home
  type: MusicAlbum
  date published: 2018-11-30
album: Roep
  type: MusicAlbum
  date published: 2020-07-24
album: Stof Tot Stof
  type: MusicAlbum
  date published: 2020-10-23
album: My Kind
  type: MusicAlbum
  date published: 2021-02-19
album: Tell the World
  type: MusicAlbum
  date published: 2022-02-11
album: Weet Jy Raak Moeg Vir My
  type: MusicAlbum
  date published: 2023-09-29
  track: Weet Jy Raak Moeg Vir My
    type: MusicRecording
    duration: PT3M22S
    duration ms: 202654
    explicit: false
    by artist: Matthew John Duncan
    in album: Weet Jy Raak Moeg Vir My
      type: MusicAlbum
      date published: 2023-09-29
    isrc code: QZTAU2324461
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T05:38:33+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc8bbb7338ab31693a9243aab4f7467a3d27e20f9cca004649864252c77ffc4e8
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958245
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958245
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAU2324461
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T05:50:22Z
    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 0xc8bbb7338ab31693a9243aab4f7467a3d27e20f9cca004649864252c77ffc4e8. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAU2324461 — a six-check JSON result.
      date published: 2026-07-16T05:50:22Z
    audio: Weet Jy Raak Moeg Vir My
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 132.017
      additional property: Musical Key
        type: PropertyValue
        value: 3
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.671
      additional property: Energy
        type: PropertyValue
        value: 0.389
      additional property: Speechiness
        type: PropertyValue
        value: 0.029
      additional property: Acousticness
        type: PropertyValue
        value: 0.75
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.1
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.344
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.704
      additional property: Key Name
        type: PropertyValue
        value: Eb
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: In Die Son
  type: MusicAlbum
  date published: 2023-12-08
album: Kom Nader
  type: MusicAlbum
  date published: 2024-04-26
album: Passasier
  type: MusicAlbum
  date published: 2025-09-05