Leo Frangioni
type: MusicGroup
genre: nova mpb
popularity: 4
followers: 264
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb7a3d47a25ea62b2e5be871ac56de9f8c4d55d4ccaffadf02a4bb40ad2db30d5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954728
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954728
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fc7127b2-3c85-470f-b077-419a0fb0e4af.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fc7127b2-3c85-470f-b077-419a0fb0e4af.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fc7127b2-3c85-470f-b077-419a0fb0e4af
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T18:08:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb7a3d47a25ea62b2e5be871ac56de9f8c4d55d4ccaffadf02a4bb40ad2db30d5","name":"Leo Frangioni","registered_at":"2026-06-21T17:35:11Z","symbol":"NIM1988470","token_address":"0x5221686751b3c4869eae580814d0e6e2224c6a71","type":"artist","uuid":"fc7127b2-3c85-470f-b077-419a0fb0e4af"}
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 0xb7a3d47a25ea62b2e5be871ac56de9f8c4d55d4ccaffadf02a4bb40ad2db30d5. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fc7127b2-3c85-470f-b077-419a0fb0e4af.json and https://artists.proofprofile.net/proofs/artist/fc7127b2-3c85-470f-b077-419a0fb0e4af.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T18:08:38Z
  text: {"copyright_id":"0xb7a3d47a25ea62b2e5be871ac56de9f8c4d55d4ccaffadf02a4bb40ad2db30d5","name":"Leo Frangioni","registered_at":"2026-06-21T17:35:11Z","symbol":"NIM1988470","token_address":"0x5221686751b3c4869eae580814d0e6e2224c6a71","type":"artist","uuid":"fc7127b2-3c85-470f-b077-419a0fb0e4af"}
album: Laranja com Azul
  type: MusicAlbum
  date published: 2022-08-12
  track: Laranja com Azul
    type: MusicRecording
    duration: PT3M48S
    duration ms: 228099
    explicit: false
    by artist: Leo Frangioni
    in album: Laranja com Azul
      type: MusicAlbum
      date published: 2022-08-12
    genre: nova mpb
    isrc code: BXEWJ2200001
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T06:50:53+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x06ae1102def7b20828cba7120b07e9fd9fb260a2efa101c33ba0a44100b1ff8f
    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/BXEWJ2200001
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ae1102def7b20828cba7120b07e9fd9fb260a2efa101c33ba0a44100b1ff8f. 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/BXEWJ2200001.
      date published: 2026-07-04T10:04:33Z
    audio: Laranja com Azul
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 149.824
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.616
      additional property: Energy
        type: PropertyValue
        value: 0.388
      additional property: Speechiness
        type: PropertyValue
        value: 0.052
      additional property: Acousticness
        type: PropertyValue
        value: 0.369
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.14
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.414
      additional property: Loudness (dB)
        type: PropertyValue
        value: -13.586
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Caia a Baixo (Acústico)
  type: MusicAlbum
  date published: 2022-09-02
album: Música Popular Brasileira Vol. 1 - (Acústico)
  type: MusicAlbum
  date published: 2022-10-04
album: Caia Abaixo
  type: MusicAlbum
  date published: 2024-02-29
album: Rosângela
  type: MusicAlbum
  date published: 2024-04-11
album: Pega o Cipó
  type: MusicAlbum
  date published: 2024-09-20
album: Música Popular Brasileira Vol. 2
  type: MusicAlbum
  date published: 2024-09-27