Roberto Barreiros
type: MusicGroup
genre: brega
popularity: 5
followers: 489
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa84c657b462128041d9dd6a26421dcf304b975e74fd7c4e5b9bc769cc85a1d1f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953885
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953885
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0d05cb39-2051-4caf-aed3-923e661bad22.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0d05cb39-2051-4caf-aed3-923e661bad22.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0d05cb39-2051-4caf-aed3-923e661bad22
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T04:12:47Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa84c657b462128041d9dd6a26421dcf304b975e74fd7c4e5b9bc769cc85a1d1f","name":"Roberto Barreiros","registered_at":"2026-06-15T18:00:29Z","symbol":"NIM0787610","token_address":"0xc24fde8c6186636fe55d062321fa14e04b095297","type":"artist","uuid":"0d05cb39-2051-4caf-aed3-923e661bad22"}
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 0xa84c657b462128041d9dd6a26421dcf304b975e74fd7c4e5b9bc769cc85a1d1f. Chain 2 (Bitcoin): anchored in block 953885 (2026-06-16T04:12:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0d05cb39-2051-4caf-aed3-923e661bad22.json and https://artists.proofprofile.net/proofs/artist/0d05cb39-2051-4caf-aed3-923e661bad22.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T04:12:47Z
  text: {"copyright_id":"0xa84c657b462128041d9dd6a26421dcf304b975e74fd7c4e5b9bc769cc85a1d1f","name":"Roberto Barreiros","registered_at":"2026-06-15T18:00:29Z","symbol":"NIM0787610","token_address":"0xc24fde8c6186636fe55d062321fa14e04b095297","type":"artist","uuid":"0d05cb39-2051-4caf-aed3-923e661bad22"}
album: Cansado de Tanto Chorar
  type: MusicAlbum
  date published: 1984-01-01
album: Chupando Jaboticaba
  type: MusicAlbum
  date published: 2002
album: Chupando Jaboticaba
  type: MusicAlbum
  date published: 2002-07-03
album: Ainda Gosto de Você / Junto de Ti
  type: MusicAlbum
  date published: 2019-06-13
album: QUERIDA 1968
  type: MusicAlbum
  date published: 2022-03-07
album: O INTERIORANO 1980
  type: MusicAlbum
  date published: 2022-03-07
album: Dose Dupla
  type: MusicAlbum
  date published: 2022-03-07
album: Raridades Vol.02
  type: MusicAlbum
  date published: 2022-03-11
album: O Carro e a Faculdade
  type: MusicAlbum
  date published: 2022-03-11
album: Sucessos de Ouro
  type: MusicAlbum
  date published: 2022-03-11
album: 1978
  type: MusicAlbum
  date published: 2022-03-11
album: 1967
  type: MusicAlbum
  date published: 2022-03-11
album: 1990
  type: MusicAlbum
  date published: 2022-03-11
album: Roberto Barreiros
  type: MusicAlbum
  date published: 2022-05-23
track: Paraguaya - Guarânia
  type: MusicRecording
  duration: PT3M16S
  duration ms: 196600
  explicit: false
  by artist: Pedro Bento & Zé Da Estrada
  by artist: Roberto Barreiros
  in album: Amigos
    type: MusicAlbum
    date published: 2005-09-01
  isrc code: BRAPI0501214
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T05:51:07+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x308fd26be1a30d46d3c75b515a19245e415c51e207662e7c4db7bd4f58816622
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956894
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956894
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRAPI0501214
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-06T07:53:57Z
  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 0x308fd26be1a30d46d3c75b515a19245e415c51e207662e7c4db7bd4f58816622. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BRAPI0501214.
    date published: 2026-07-06T07:53:57Z
  audio: Paraguaya - Guarânia
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 112.552
    additional property: Musical Key
      type: PropertyValue
      value: 8
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.612
    additional property: Energy
      type: PropertyValue
      value: 0.508
    additional property: Speechiness
      type: PropertyValue
      value: 0.023
    additional property: Acousticness
      type: PropertyValue
      value: 0.452
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.307
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.708
    additional property: Loudness (dB)
      type: PropertyValue
      value: -10.258
    additional property: Key Name
      type: PropertyValue
      value: Ab
    additional property: Mode Name
      type: PropertyValue
      value: Major