Dudu Machado
type: MusicGroup
popularity: 5
followers: 60
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x64ebb20c7e2b05da97cc9756cfde8ade39442d47cbd03e54eb29699cce622814
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c694016e-6665-40df-b0b8-16afae4ff9b5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c694016e-6665-40df-b0b8-16afae4ff9b5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c694016e-6665-40df-b0b8-16afae4ff9b5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x64ebb20c7e2b05da97cc9756cfde8ade39442d47cbd03e54eb29699cce622814","name":"Dudu Machado","registered_at":"2026-06-20T21:37:30Z","symbol":"NIM1718537","token_address":"0x05c87916ef6f2caa3adb9dc3e896260550ea1252","type":"artist","uuid":"c694016e-6665-40df-b0b8-16afae4ff9b5"}
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 0x64ebb20c7e2b05da97cc9756cfde8ade39442d47cbd03e54eb29699cce622814. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c694016e-6665-40df-b0b8-16afae4ff9b5.json and https://artists.proofprofile.net/proofs/artist/c694016e-6665-40df-b0b8-16afae4ff9b5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x64ebb20c7e2b05da97cc9756cfde8ade39442d47cbd03e54eb29699cce622814","name":"Dudu Machado","registered_at":"2026-06-20T21:37:30Z","symbol":"NIM1718537","token_address":"0x05c87916ef6f2caa3adb9dc3e896260550ea1252","type":"artist","uuid":"c694016e-6665-40df-b0b8-16afae4ff9b5"}
album: Demo
  type: MusicAlbum
  date published: 2024-11-15
  track: Nossa dança - demo
    type: MusicRecording
    duration: PT3M27S
    duration ms: 207412
    explicit: false
    by artist: Dudu Machado
    in album: Demo
      type: MusicAlbum
      date published: 2024-11-15
    isrc code: BX7EM2400005
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T16:29:21+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe516de50ad6760cbb9c56c6e3a51adf997f749ac69d6aa584bca971428207b03
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958582
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958582
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX7EM2400005
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T16:47:25Z
    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 0xe516de50ad6760cbb9c56c6e3a51adf997f749ac69d6aa584bca971428207b03. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/BX7EM2400005.
      date published: 2026-07-18T16:47:25Z
    audio: Nossa dança - demo
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 90.571
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.481
      additional property: Energy
        type: PropertyValue
        value: 0.19
      additional property: Speechiness
        type: PropertyValue
        value: 0.053
      additional property: Acousticness
        type: PropertyValue
        value: 0.831
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.134
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.562
      additional property: Loudness (dB)
        type: PropertyValue
        value: -17.685
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Minor