João Farias
type: MusicGroup
popularity: 5
followers: 114
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3a88237e566a32f3201331e51f3b7b40afb03152bb73adcba36292c852ca6433
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954062
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954062
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/470a6864-10e7-48be-9da1-04956d52471e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/470a6864-10e7-48be-9da1-04956d52471e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/470a6864-10e7-48be-9da1-04956d52471e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T07:39:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3a88237e566a32f3201331e51f3b7b40afb03152bb73adcba36292c852ca6433","name":"João Farias","registered_at":"2026-06-16T14:19:07Z","symbol":"NIM1078464","token_address":"0x6a79169e235c8e2d49de0737273ca6177c0e80af","type":"artist","uuid":"470a6864-10e7-48be-9da1-04956d52471e"}
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 0x3a88237e566a32f3201331e51f3b7b40afb03152bb73adcba36292c852ca6433. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/470a6864-10e7-48be-9da1-04956d52471e.json and https://artists.proofprofile.net/proofs/artist/470a6864-10e7-48be-9da1-04956d52471e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x3a88237e566a32f3201331e51f3b7b40afb03152bb73adcba36292c852ca6433","name":"João Farias","registered_at":"2026-06-16T14:19:07Z","symbol":"NIM1078464","token_address":"0x6a79169e235c8e2d49de0737273ca6177c0e80af","type":"artist","uuid":"470a6864-10e7-48be-9da1-04956d52471e"}
album: Naiara Azevedo
  type: MusicAlbum
  date published: 2024-10-30
  track: Naiara Azevedo
    type: MusicRecording
    duration: PT3M19S
    duration ms: 199480
    explicit: false
    by artist: João Farias
    in album: Naiara Azevedo
      type: MusicAlbum
      date published: 2024-10-30
    isrc code: QZWFW2454781
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-13T00:11:26+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x12a69ebe8cca9ccfc7e1168a88de91515097678aaea10a11a23fa2054e8b0ce5
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957780
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957780
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFW2454781
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-13T00:36:44Z
    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 0x12a69ebe8cca9ccfc7e1168a88de91515097678aaea10a11a23fa2054e8b0ce5. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZWFW2454781.
      date published: 2026-07-13T00:36:44Z
    audio: Naiara Azevedo
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 115.004
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.855
      additional property: Energy
        type: PropertyValue
        value: 0.307
      additional property: Speechiness
        type: PropertyValue
        value: 0.052
      additional property: Acousticness
        type: PropertyValue
        value: 0.564
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.124
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.83
      additional property: Loudness (dB)
        type: PropertyValue
        value: -15.283
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major