Wubbaduck & SirMark
type: MusicGroup
genre: deathstep
genre: dubstep
popularity: 5
followers: 875
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x90b24672048ee3507188251aad60dd9bca4e8e1facf1b14f2998fa200a9c6ec2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954631
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954631
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cf4de9ef-364c-45c4-b7fa-b1f9377b823b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cf4de9ef-364c-45c4-b7fa-b1f9377b823b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cf4de9ef-364c-45c4-b7fa-b1f9377b823b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T02:46:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x90b24672048ee3507188251aad60dd9bca4e8e1facf1b14f2998fa200a9c6ec2","name":"Wubbaduck & SirMark","registered_at":"2026-06-21T00:27:12Z","symbol":"NIM1761442","token_address":"0x417b5a0350470fc7bd6e7b4b06beb2a4e0cea613","type":"artist","uuid":"cf4de9ef-364c-45c4-b7fa-b1f9377b823b"}
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 0x90b24672048ee3507188251aad60dd9bca4e8e1facf1b14f2998fa200a9c6ec2. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cf4de9ef-364c-45c4-b7fa-b1f9377b823b.json and https://artists.proofprofile.net/proofs/artist/cf4de9ef-364c-45c4-b7fa-b1f9377b823b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T02:46:24Z
  text: {"copyright_id":"0x90b24672048ee3507188251aad60dd9bca4e8e1facf1b14f2998fa200a9c6ec2","name":"Wubbaduck & SirMark","registered_at":"2026-06-21T00:27:12Z","symbol":"NIM1761442","token_address":"0x417b5a0350470fc7bd6e7b4b06beb2a4e0cea613","type":"artist","uuid":"cf4de9ef-364c-45c4-b7fa-b1f9377b823b"}
album: Nightmare After Christmas
  type: MusicAlbum
  date published: 2016-08-14
  track: Nightmare After Christmas
    type: MusicRecording
    duration: PT4M17S
    duration ms: 257472
    explicit: false
    by artist: Wubbaduck & SirMark
    in album: Nightmare After Christmas
      type: MusicAlbum
      date published: 2016-08-14
    genre: deathstep
    genre: dubstep
    isrc code: QM42K1607920
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-14T23:51:58+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x39dc0be622b0ba9c40a97e8a8d0a74c61928769b6d4005530c867fba70cb9947
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958083
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958083
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM42K1607920
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T01:50:31Z
    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 0x39dc0be622b0ba9c40a97e8a8d0a74c61928769b6d4005530c867fba70cb9947. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QM42K1607920.
      date published: 2026-07-15T01:50:31Z
    audio: Nightmare After Christmas
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 173.958
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.612
      additional property: Energy
        type: PropertyValue
        value: 0.797
      additional property: Speechiness
        type: PropertyValue
        value: 0.056
      additional property: Acousticness
        type: PropertyValue
        value: 0.129
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.094
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.276
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.102
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Nightmare after Christmas
  type: MusicAlbum
  date published: 2016-08-15
album: Nightmare After Christmas
  type: MusicAlbum
  date published: 2016-08-15