Cláudia & Joana
type: MusicGroup
popularity: 4
followers: 46
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc357d8b43927946e9a19c9cd724d777b41e0c7b2fcb53584cd1ab4aaa2f7b4c2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7294af24-8956-461a-bedf-1bf3fd168d13.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7294af24-8956-461a-bedf-1bf3fd168d13.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7294af24-8956-461a-bedf-1bf3fd168d13
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc357d8b43927946e9a19c9cd724d777b41e0c7b2fcb53584cd1ab4aaa2f7b4c2","name":"Cláudia & Joana","registered_at":"2026-06-17T05:34:02Z","symbol":"NIM1296784","token_address":"0xaaeabbdc978ce6c3fbc3234e9b3d41c6c1b9abdd","type":"artist","uuid":"7294af24-8956-461a-bedf-1bf3fd168d13"}
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 0xc357d8b43927946e9a19c9cd724d777b41e0c7b2fcb53584cd1ab4aaa2f7b4c2. 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/7294af24-8956-461a-bedf-1bf3fd168d13.json and https://artists.proofprofile.net/proofs/artist/7294af24-8956-461a-bedf-1bf3fd168d13.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xc357d8b43927946e9a19c9cd724d777b41e0c7b2fcb53584cd1ab4aaa2f7b4c2","name":"Cláudia & Joana","registered_at":"2026-06-17T05:34:02Z","symbol":"NIM1296784","token_address":"0xaaeabbdc978ce6c3fbc3234e9b3d41c6c1b9abdd","type":"artist","uuid":"7294af24-8956-461a-bedf-1bf3fd168d13"}
album: Não prestas
  type: MusicAlbum
  date published: 2025-01-03
  track: Não prestas
    type: MusicRecording
    duration: PT3M10S
    duration ms: 190623
    explicit: false
    by artist: Cláudia & Joana
    in album: Não prestas
      type: MusicAlbum
      date published: 2025-01-03
    isrc code: PTES12500206
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T08:26:59+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd2b825bf06e4310300cc47d11e8289534ed891647dd95bae9af065e47317c5ef
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958853
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958853
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PTES12500206
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T11:30:27Z
    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 0xd2b825bf06e4310300cc47d11e8289534ed891647dd95bae9af065e47317c5ef. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:30:27Z), 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/PTES12500206.
      date published: 2026-07-20T11:30:27Z
    audio: Não prestas
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 97.987
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.783
      additional property: Energy
        type: PropertyValue
        value: 0.882
      additional property: Speechiness
        type: PropertyValue
        value: 0.034
      additional property: Acousticness
        type: PropertyValue
        value: 0.21
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.107
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.509
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.945
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Minor