João cantor
type: MusicGroup
genre: forró
popularity: 4
followers: 73
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbb9250120f2ecf1c6c8fadb13608c8dedb2b30e15530b1fef42f575aa15b36da
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/88f3fa90-0ec7-49fc-9ffa-0875c1cb2c6b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/88f3fa90-0ec7-49fc-9ffa-0875c1cb2c6b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/88f3fa90-0ec7-49fc-9ffa-0875c1cb2c6b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbb9250120f2ecf1c6c8fadb13608c8dedb2b30e15530b1fef42f575aa15b36da","name":"João cantor","registered_at":"2026-06-17T13:29:28Z","symbol":"NIM1410048","token_address":"0xd76b4449641770b0fb0a92a624d9d4a8dd0de7b9","type":"artist","uuid":"88f3fa90-0ec7-49fc-9ffa-0875c1cb2c6b"}
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9250120f2ecf1c6c8fadb13608c8dedb2b30e15530b1fef42f575aa15b36da. 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/88f3fa90-0ec7-49fc-9ffa-0875c1cb2c6b.json and https://artists.proofprofile.net/proofs/artist/88f3fa90-0ec7-49fc-9ffa-0875c1cb2c6b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0xbb9250120f2ecf1c6c8fadb13608c8dedb2b30e15530b1fef42f575aa15b36da","name":"João cantor","registered_at":"2026-06-17T13:29:28Z","symbol":"NIM1410048","token_address":"0xd76b4449641770b0fb0a92a624d9d4a8dd0de7b9","type":"artist","uuid":"88f3fa90-0ec7-49fc-9ffa-0875c1cb2c6b"}
album: Isso É Forró
  type: MusicAlbum
  date published: 2022-12-06
album: Muído de Vaquejada
  type: MusicAlbum
  date published: 2023-08-25
album: Encontro do Caçador
  type: MusicAlbum
  date published: 2023-12-08
album: Rosivaldo Oliveira
  type: MusicAlbum
  date published: 2024-09-07
album: Professora Lucivania - 13777
  type: MusicAlbum
  date published: 2024-09-12
album: CD (PARA LEVANTAR POEIRA)
  type: MusicAlbum
  date published: 2024-12-27
  track: Case Mais Eu
    type: MusicRecording
    duration: PT2M29S
    duration ms: 149075
    explicit: false
    by artist: João cantor
    in album: CD (PARA LEVANTAR POEIRA)
      type: MusicAlbum
      date published: 2024-12-27
    genre: forró
    isrc code: QT3F22470512
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T22:33:47+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xca36e2bdb6c4155c2f2edbba01ea60dcb394d437504375b5db1105bae59b832a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958793
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958793
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3F22470512
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T01:36:40Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca36e2bdb6c4155c2f2edbba01ea60dcb394d437504375b5db1105bae59b832a. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:36:40Z), 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/QT3F22470512.
      date published: 2026-07-20T01:36:40Z
    audio: Case Mais Eu
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 170.007
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.616
      additional property: Energy
        type: PropertyValue
        value: 0.649
      additional property: Speechiness
        type: PropertyValue
        value: 0.049
      additional property: Acousticness
        type: PropertyValue
        value: 0.206
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.004
      additional property: Liveness
        type: PropertyValue
        value: 0.272
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.846
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.674
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major