Quarteto de Bolso
type: MusicGroup
popularity: 4
followers: 335
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc404b3387dec9a887e1cfaa550193ec031cee59a77934a69cd53af3cbeb4de1e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f1dce66a-08f5-4684-b42d-9fd91352a21e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f1dce66a-08f5-4684-b42d-9fd91352a21e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f1dce66a-08f5-4684-b42d-9fd91352a21e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc404b3387dec9a887e1cfaa550193ec031cee59a77934a69cd53af3cbeb4de1e","name":"Quarteto de Bolso","registered_at":"2026-06-21T13:40:36Z","symbol":"NIM1933754","token_address":"0x7e1465c54931b1618f2fc98060e6145ff3313f49","type":"artist","uuid":"f1dce66a-08f5-4684-b42d-9fd91352a21e"}
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 0xc404b3387dec9a887e1cfaa550193ec031cee59a77934a69cd53af3cbeb4de1e. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f1dce66a-08f5-4684-b42d-9fd91352a21e.json and https://artists.proofprofile.net/proofs/artist/f1dce66a-08f5-4684-b42d-9fd91352a21e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0xc404b3387dec9a887e1cfaa550193ec031cee59a77934a69cd53af3cbeb4de1e","name":"Quarteto de Bolso","registered_at":"2026-06-21T13:40:36Z","symbol":"NIM1933754","token_address":"0x7e1465c54931b1618f2fc98060e6145ff3313f49","type":"artist","uuid":"f1dce66a-08f5-4684-b42d-9fd91352a21e"}
album: Primeiro Bolso
  type: MusicAlbum
  date published: 2010-04-17
album: Primeiro Bolso
  type: MusicAlbum
  date published: 2010-04-17
album: Segundo Bolso
  type: MusicAlbum
  date published: 2011-11-11
album: Segundo Bolso
  type: MusicAlbum
  date published: 2011-11-11
album: Terceiro Bolso
  type: MusicAlbum
  date published: 2013-03-02
album: Terceiro Bolso
  type: MusicAlbum
  date published: 2013-03-02
album: Quarto Bolso
  type: MusicAlbum
  date published: 2016-02-27
album: Quarto Bolso
  type: MusicAlbum
  date published: 2016-02-27
album: Quarenta (Hino Aveirense @ AAUAv)
  type: MusicAlbum
  date published: 2024-04-19
  track: Quarenta (Hino Aveirense @ AAUAv)
    type: MusicRecording
    duration: PT5M4S
    duration ms: 304579
    explicit: false
    by artist: Quarteto de Bolso
    in album: Quarenta (Hino Aveirense @ AAUAv)
      type: MusicAlbum
      date published: 2024-04-19
    isrc code: USDY42483010
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T06:46:14+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xf3cc86035493dec50093da702acb609fc8b75bb195221e4c44ac74a9f94dbf40
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956634
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956634
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDY42483010
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T10:04:33Z
    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 0xf3cc86035493dec50093da702acb609fc8b75bb195221e4c44ac74a9f94dbf40. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USDY42483010.
      date published: 2026-07-04T10:04:33Z
    audio: Quarenta (Hino Aveirense @ AAUAv)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 91.416
      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: 0.51
      additional property: Energy
        type: PropertyValue
        value: 0.405
      additional property: Speechiness
        type: PropertyValue
        value: 0.04
      additional property: Acousticness
        type: PropertyValue
        value: 0.405
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.318
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.151
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.615
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Major