João Paulo e Leandro
type: MusicGroup
popularity: 3
followers: 851
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf31b53472e73e61c007005cdaaed8a71dc0778245a4b9abab9400c9e33f01f7b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8982b2b0-937c-42a2-a2a9-af4617613a79.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8982b2b0-937c-42a2-a2a9-af4617613a79.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8982b2b0-937c-42a2-a2a9-af4617613a79
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf31b53472e73e61c007005cdaaed8a71dc0778245a4b9abab9400c9e33f01f7b","name":"João Paulo e Leandro","registered_at":"2026-06-17T13:35:26Z","symbol":"NIM1411476","token_address":"0x197a910dfe9037a1ca62dc2cee21c6bd58de3698","type":"artist","uuid":"8982b2b0-937c-42a2-a2a9-af4617613a79"}
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 0xf31b53472e73e61c007005cdaaed8a71dc0778245a4b9abab9400c9e33f01f7b. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8982b2b0-937c-42a2-a2a9-af4617613a79.json and https://artists.proofprofile.net/proofs/artist/8982b2b0-937c-42a2-a2a9-af4617613a79.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0xf31b53472e73e61c007005cdaaed8a71dc0778245a4b9abab9400c9e33f01f7b","name":"João Paulo e Leandro","registered_at":"2026-06-17T13:35:26Z","symbol":"NIM1411476","token_address":"0x197a910dfe9037a1ca62dc2cee21c6bd58de3698","type":"artist","uuid":"8982b2b0-937c-42a2-a2a9-af4617613a79"}
album: Verdadeiro Amigo
  type: MusicAlbum
  date published: 2015-06-14
album: Verdadeiro Amigo (Playback)
  type: MusicAlbum
  date published: 2015-10-10
album: Na Direção de Deus (Playback)
  type: MusicAlbum
  date published: 2017-06-14
album: Na Direção de Deus
  type: MusicAlbum
  date published: 2017-06-14
  track: A Revelação
    type: MusicRecording
    duration: PT6M11S
    duration ms: 371533
    explicit: false
    by artist: João Paulo e Leandro
    in album: Na Direção de Deus
      type: MusicAlbum
      date published: 2017-06-14
    isrc code: BXF9P1700006
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T08:29:08+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xa16f552258fa868de98a1dfe163c5c5f2179362609b0ed7668947e6bffd54903
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958987
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958987
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXF9P1700006
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T09:04:56Z
    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 0xa16f552258fa868de98a1dfe163c5c5f2179362609b0ed7668947e6bffd54903. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/BXF9P1700006.
      date published: 2026-07-21T09:04:56Z
    audio: A Revelação
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 150.154
      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: 0.536
      additional property: Energy
        type: PropertyValue
        value: 0.842
      additional property: Speechiness
        type: PropertyValue
        value: 0.064
      additional property: Acousticness
        type: PropertyValue
        value: 0.255
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.267
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.466
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.379
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Quem Te Honra Sou Eu (Playback)
  type: MusicAlbum
  date published: 2018-10-01
album: Quem Te Honra Sou Eu
  type: MusicAlbum
  date published: 2018-10-01
album: Que Tal? (Playback)
  type: MusicAlbum
  date published: 2018-10-22
album: Que Tal?
  type: MusicAlbum
  date published: 2018-10-22
album: Rasga o Céu e Vem (Playback)
  type: MusicAlbum
  date published: 2018-11-01
album: Rasga o Céu e Vem
  type: MusicAlbum
  date published: 2018-11-01
album: Jesus Vem Aí
  type: MusicAlbum
  date published: 2019-01-11
album: Jesus Vem Aí (Playback)
  type: MusicAlbum
  date published: 2019-01-11
album: Eu Me Rendo
  type: MusicAlbum
  date published: 2019-03-11
album: Eu Me Rendo (Playback)
  type: MusicAlbum
  date published: 2019-03-11
album: Que Tal?
  type: MusicAlbum
  date published: 2019-04-26