Bigu Ferreira
type: MusicGroup
genre: kizomba
genre: zouk
popularity: 2
followers: 5
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x55930e8547e4160d73a347e6fdaa6423a78fcfccd5350c0aea565035d80f40b5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b2096030-362c-423d-a5a7-d3bb1a9725e9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b2096030-362c-423d-a5a7-d3bb1a9725e9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b2096030-362c-423d-a5a7-d3bb1a9725e9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x55930e8547e4160d73a347e6fdaa6423a78fcfccd5350c0aea565035d80f40b5","name":"Bigu Ferreira","registered_at":"2026-06-20T12:42:40Z","symbol":"NIM1614688","token_address":"0x2dcf5d4fdd1ff6ee9b23ce2f8b3f4a9d3eab8821","type":"artist","uuid":"b2096030-362c-423d-a5a7-d3bb1a9725e9"}
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 0x55930e8547e4160d73a347e6fdaa6423a78fcfccd5350c0aea565035d80f40b5. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2096030-362c-423d-a5a7-d3bb1a9725e9.json and https://artists.proofprofile.net/proofs/artist/b2096030-362c-423d-a5a7-d3bb1a9725e9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x55930e8547e4160d73a347e6fdaa6423a78fcfccd5350c0aea565035d80f40b5","name":"Bigu Ferreira","registered_at":"2026-06-20T12:42:40Z","symbol":"NIM1614688","token_address":"0x2dcf5d4fdd1ff6ee9b23ce2f8b3f4a9d3eab8821","type":"artist","uuid":"b2096030-362c-423d-a5a7-d3bb1a9725e9"}
album: Checke Checke
  type: MusicAlbum
  date published: 2020-08-20
  track: Checke Checke
    type: MusicRecording
    duration: PT5M12S
    duration ms: 312293
    explicit: false
    by artist: Bigu Ferreira
    in album: Checke Checke
      type: MusicAlbum
      date published: 2020-08-20
    genre: kizomba
    genre: zouk
    isrc code: ESA011853151
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T12:37:43+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x520fb6c7a935df355b65b3330f81ab37bab075d471c749958e782332f403eff2
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956822
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956822
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA011853151
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T18:48:28Z
    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 0x520fb6c7a935df355b65b3330f81ab37bab075d471c749958e782332f403eff2. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ESA011853151.
      date published: 2026-07-05T18:48:28Z
    audio: Checke Checke
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 96.008
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.677
      additional property: Energy
        type: PropertyValue
        value: 0.798
      additional property: Speechiness
        type: PropertyValue
        value: 0.041
      additional property: Acousticness
        type: PropertyValue
        value: 0.002
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.02
      additional property: Liveness
        type: PropertyValue
        value: 0.189
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.857
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.403
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Minor