Du Marthaz
type: MusicGroup
genre: kizomba
popularity: 2
followers: 9
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe8cb2c32cf73bbd23fb50c2be716e7ed2557ea543b03ec452c5ae9f5686f1d36
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5050fee6-b5ac-4f8e-bc51-ebb4c049d507.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5050fee6-b5ac-4f8e-bc51-ebb4c049d507.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5050fee6-b5ac-4f8e-bc51-ebb4c049d507
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe8cb2c32cf73bbd23fb50c2be716e7ed2557ea543b03ec452c5ae9f5686f1d36","name":"Du Marthaz","registered_at":"2026-06-16T17:54:08Z","symbol":"NIM1129771","token_address":"0x2024005fbca3bf53d1757ca3d4f75084e8721d8a","type":"artist","uuid":"5050fee6-b5ac-4f8e-bc51-ebb4c049d507"}
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 0xe8cb2c32cf73bbd23fb50c2be716e7ed2557ea543b03ec452c5ae9f5686f1d36. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5050fee6-b5ac-4f8e-bc51-ebb4c049d507.json and https://artists.proofprofile.net/proofs/artist/5050fee6-b5ac-4f8e-bc51-ebb4c049d507.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0xe8cb2c32cf73bbd23fb50c2be716e7ed2557ea543b03ec452c5ae9f5686f1d36","name":"Du Marthaz","registered_at":"2026-06-16T17:54:08Z","symbol":"NIM1129771","token_address":"0x2024005fbca3bf53d1757ca3d4f75084e8721d8a","type":"artist","uuid":"5050fee6-b5ac-4f8e-bc51-ebb4c049d507"}
album: Apaixonado Live (Ao Vivo)
  type: MusicAlbum
  date published: 2024-11-01
album: Ai Minina
  type: MusicAlbum
  date published: 2024-12-14
album: NHA PONTO FRACO
  type: MusicAlbum
  date published: 2025-02-14
  track: NHA PONTO FRACO
    type: MusicRecording
    duration: PT3M38S
    duration ms: 218000
    explicit: false
    by artist: Du Marthaz
    in album: NHA PONTO FRACO
      type: MusicAlbum
      date published: 2025-02-14
    genre: kizomba
    isrc code: USCGH2599731
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-22T05:12:24+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xa279cc64a1ab24a2ee28d36fcce6b246b04c272081ff83e9c2c3d5be6958dd63
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959105
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959105
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGH2599731
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-22T06:33:30Z
    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 0xa279cc64a1ab24a2ee28d36fcce6b246b04c272081ff83e9c2c3d5be6958dd63. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/USCGH2599731.
      date published: 2026-07-22T06:33:30Z
    audio: NHA PONTO FRACO
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 95.026
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.659
      additional property: Energy
        type: PropertyValue
        value: 0.582
      additional property: Speechiness
        type: PropertyValue
        value: 0.029
      additional property: Acousticness
        type: PropertyValue
        value: 0.175
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.163
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.41
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.855
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: SI BU AMOR É MI
  type: MusicAlbum
  date published: 2025-06-20