Douglas Matos
type: MusicGroup
popularity: 11
followers: 1955
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd4ca4080ba42d3b93ef94680ad74ec7052f928db21dfafd1f110456dd7d1d95d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953817
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953817
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fb2b9a24-1d1d-48c2-b072-62687f434497.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fb2b9a24-1d1d-48c2-b072-62687f434497.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fb2b9a24-1d1d-48c2-b072-62687f434497
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T18:10:31Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd4ca4080ba42d3b93ef94680ad74ec7052f928db21dfafd1f110456dd7d1d95d","name":"Douglas Matos","registered_at":"2026-06-15T06:56:54Z","symbol":"NIM0717540","token_address":"0x3700e8841275998643e13364029478ea7b9a864a","type":"artist","uuid":"fb2b9a24-1d1d-48c2-b072-62687f434497"}
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 0xd4ca4080ba42d3b93ef94680ad74ec7052f928db21dfafd1f110456dd7d1d95d. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb2b9a24-1d1d-48c2-b072-62687f434497.json and https://artists.proofprofile.net/proofs/artist/fb2b9a24-1d1d-48c2-b072-62687f434497.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T18:10:31Z
  text: {"copyright_id":"0xd4ca4080ba42d3b93ef94680ad74ec7052f928db21dfafd1f110456dd7d1d95d","name":"Douglas Matos","registered_at":"2026-06-15T06:56:54Z","symbol":"NIM0717540","token_address":"0x3700e8841275998643e13364029478ea7b9a864a","type":"artist","uuid":"fb2b9a24-1d1d-48c2-b072-62687f434497"}
album: Love Love
  type: MusicAlbum
  date published: 2022-12-09
album: Love Love
  type: MusicAlbum
  date published: 2022-12-09
album: Sigilo
  type: MusicAlbum
  date published: 2023-04-21
album: Sigilo (Speed) [Remix]
  type: MusicAlbum
  date published: 2023-04-23
  track: Sigilo (Speed) - Remix
    type: MusicRecording
    duration: PT2M18S
    duration ms: 138165
    explicit: true
    by artist: Douglas Matos
    in album: Sigilo (Speed) [Remix]
      type: MusicAlbum
      date published: 2023-04-23
    isrc code: BXVT82300002
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T18:12:42+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc45d81c86f580af7be237960c1b50b7f1a3a18821438eae7365a09d5ee7787a7
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956826
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956826
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXVT82300002
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T19:27:56Z
    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 0xc45d81c86f580af7be237960c1b50b7f1a3a18821438eae7365a09d5ee7787a7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BXVT82300002.
      date published: 2026-07-05T19:27:56Z
    audio: Sigilo (Speed) - Remix
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 83.953
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.633
      additional property: Energy
        type: PropertyValue
        value: 0.417
      additional property: Speechiness
        type: PropertyValue
        value: 0.055
      additional property: Acousticness
        type: PropertyValue
        value: 0.631
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.001
      additional property: Liveness
        type: PropertyValue
        value: 0.186
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.644
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.914
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Sujo
  type: MusicAlbum
  date published: 2023-12-04