Clara Castro
type: MusicGroup
genre: nova mpb
popularity: 8
followers: 1219
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbdddb668eacfeee0a7d411d29c7cc66bc80989e4b550d33d28a48b5c1f23a365
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953972
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953972
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2a971323-5756-4c25-b037-9370348b8c34.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2a971323-5756-4c25-b037-9370348b8c34.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2a971323-5756-4c25-b037-9370348b8c34
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T16:31:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbdddb668eacfeee0a7d411d29c7cc66bc80989e4b550d33d28a48b5c1f23a365","name":"Clara Castro","registered_at":"2026-06-16T04:21:45Z","symbol":"NIM0935883","token_address":"0x936bb944cbbdf69dee261a26b7bb895fa2ded2b1","type":"artist","uuid":"2a971323-5756-4c25-b037-9370348b8c34"}
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 0xbdddb668eacfeee0a7d411d29c7cc66bc80989e4b550d33d28a48b5c1f23a365. Chain 2 (Bitcoin): anchored in block 953972 (2026-06-16T16:31:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2a971323-5756-4c25-b037-9370348b8c34.json and https://artists.proofprofile.net/proofs/artist/2a971323-5756-4c25-b037-9370348b8c34.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T16:31:10Z
  text: {"copyright_id":"0xbdddb668eacfeee0a7d411d29c7cc66bc80989e4b550d33d28a48b5c1f23a365","name":"Clara Castro","registered_at":"2026-06-16T04:21:45Z","symbol":"NIM0935883","token_address":"0x936bb944cbbdf69dee261a26b7bb895fa2ded2b1","type":"artist","uuid":"2a971323-5756-4c25-b037-9370348b8c34"}
album: Inverno Astral
  type: MusicAlbum
  date published: 2018-06-15
album: Caostrofobia
  type: MusicAlbum
  date published: 2018-07-20
album: Fome de Gritar
  type: MusicAlbum
  date published: 2021-05-28
album: A Torre
  type: MusicAlbum
  date published: 2021-07-02
album: ANA
  type: MusicAlbum
  date published: 2021-08-06
album: Enquanto os Homens Dormem
  type: MusicAlbum
  date published: 2023-08-24
album: Hora de Acordar
  type: MusicAlbum
  date published: 2024-06-07
album: A Torre
  type: MusicAlbum
  date published: 2024-07-05
album: Perambule
  type: MusicAlbum
  date published: 2024-08-02
  track: A Torre
    type: MusicRecording
    duration: PT3M40S
    duration ms: 220354
    explicit: false
    by artist: Clara Castro
    in album: Perambule
      type: MusicAlbum
      date published: 2024-08-02
    genre: nova mpb
    isrc code: BXN392400002
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T02:04:41+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xaccb7109470ac50cc9938185684c44799a62d98433a00abb5aace90674dc5ae9
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958644
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958644
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXN392400002
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T02:21:25Z
    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 0xaccb7109470ac50cc9938185684c44799a62d98433a00abb5aace90674dc5ae9. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/BXN392400002.
      date published: 2026-07-19T02:21:25Z
    audio: A Torre
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 113.543
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.449
      additional property: Energy
        type: PropertyValue
        value: 0.745
      additional property: Speechiness
        type: PropertyValue
        value: 0.052
      additional property: Acousticness
        type: PropertyValue
        value: 0.039
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.008
      additional property: Liveness
        type: PropertyValue
        value: 0.851
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.295
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.828
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Minor