Douglas Penn
type: MusicGroup
popularity: 5
followers: 140
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x23c390f5fbc02a55ed164ed7c55421a1bea4154ebbd7bd8e73370caca615031d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954693
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954693
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e6e4c769-bb03-4437-aea9-d12467b950c7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e6e4c769-bb03-4437-aea9-d12467b950c7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e6e4c769-bb03-4437-aea9-d12467b950c7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T11:50:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x23c390f5fbc02a55ed164ed7c55421a1bea4154ebbd7bd8e73370caca615031d","name":"Douglas Penn","registered_at":"2026-06-21T09:03:36Z","symbol":"NIM1879546","token_address":"0x569094e677932817476007aef3aff36519b57980","type":"artist","uuid":"e6e4c769-bb03-4437-aea9-d12467b950c7"}
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 0x23c390f5fbc02a55ed164ed7c55421a1bea4154ebbd7bd8e73370caca615031d. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e6e4c769-bb03-4437-aea9-d12467b950c7.json and https://artists.proofprofile.net/proofs/artist/e6e4c769-bb03-4437-aea9-d12467b950c7.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T11:50:32Z
  text: {"copyright_id":"0x23c390f5fbc02a55ed164ed7c55421a1bea4154ebbd7bd8e73370caca615031d","name":"Douglas Penn","registered_at":"2026-06-21T09:03:36Z","symbol":"NIM1879546","token_address":"0x569094e677932817476007aef3aff36519b57980","type":"artist","uuid":"e6e4c769-bb03-4437-aea9-d12467b950c7"}
album: Do You Know
  type: MusicAlbum
  date published: 2023-10-17
  track: Do You Know
    type: MusicRecording
    duration: PT4M45S
    duration ms: 285805
    explicit: false
    by artist: Douglas Penn
    in album: Do You Know
      type: MusicAlbum
      date published: 2023-10-17
    isrc code: QZTB52316579
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T14:42:28+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x696db38d29e4660ea0ab41665ace84f2b57979023b07af527c863f26ec5e3c4b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956551
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956551
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB52316579
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T21:18:05Z
    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 0x696db38d29e4660ea0ab41665ace84f2b57979023b07af527c863f26ec5e3c4b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZTB52316579 — a six-check JSON result.
      date published: 2026-07-03T21:18:05Z
    audio: Do You Know
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 139.283
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.502
      additional property: Energy
        type: PropertyValue
        value: 0.343
      additional property: Speechiness
        type: PropertyValue
        value: 0.031
      additional property: Acousticness
        type: PropertyValue
        value: 0.511
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.412
      additional property: Liveness
        type: PropertyValue
        value: 0.412
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.13
      additional property: Loudness (dB)
        type: PropertyValue
        value: -14.131
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major