Kauan Afonso
type: MusicGroup
genre: anime rap
genre: nerdcore
popularity: 2
followers: 100
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc594fecb2bec6349f61a22643d5a76d939b3109396a78b1424e03fc737ba20e4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/53582a59-1957-4f80-bdd7-6af18288c591.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/53582a59-1957-4f80-bdd7-6af18288c591.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/53582a59-1957-4f80-bdd7-6af18288c591
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc594fecb2bec6349f61a22643d5a76d939b3109396a78b1424e03fc737ba20e4","name":"Kauan Afonso","registered_at":"2026-06-16T18:46:49Z","symbol":"NIM1142335","token_address":"0x6689a0fcaab844e8c35cbf7e812bc06778c40916","type":"artist","uuid":"53582a59-1957-4f80-bdd7-6af18288c591"}
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 0xc594fecb2bec6349f61a22643d5a76d939b3109396a78b1424e03fc737ba20e4. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/53582a59-1957-4f80-bdd7-6af18288c591.json and https://artists.proofprofile.net/proofs/artist/53582a59-1957-4f80-bdd7-6af18288c591.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0xc594fecb2bec6349f61a22643d5a76d939b3109396a78b1424e03fc737ba20e4","name":"Kauan Afonso","registered_at":"2026-06-16T18:46:49Z","symbol":"NIM1142335","token_address":"0x6689a0fcaab844e8c35cbf7e812bc06778c40916","type":"artist","uuid":"53582a59-1957-4f80-bdd7-6af18288c591"}
album: Aki Hayakawa (Chainsaw Man)
  type: MusicAlbum
  date published: 2022-11-01
  track: Aki Hayakawa (Chainsaw Man)
    type: MusicRecording
    duration: PT2M45S
    duration ms: 165000
    explicit: false
    by artist: Kauan Afonso
    in album: Aki Hayakawa (Chainsaw Man)
      type: MusicAlbum
      date published: 2022-11-01
    genre: anime rap
    genre: nerdcore
    isrc code: USANG2225131
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-27T14:58:10+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe8a072eee46e050cd22f1d65225634b50f6207c62e71c0718bef9265faf4c2a6
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956304
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956304
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USANG2225131
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T03:55:08Z
    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 0xe8a072eee46e050cd22f1d65225634b50f6207c62e71c0718bef9265faf4c2a6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USANG2225131.
      date published: 2026-07-02T03:55:08Z
    audio: Aki Hayakawa (Chainsaw Man)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 172.458
      additional property: Musical Key
        type: PropertyValue
        value: 3
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.653
      additional property: Energy
        type: PropertyValue
        value: 0.516
      additional property: Speechiness
        type: PropertyValue
        value: 0.24
      additional property: Acousticness
        type: PropertyValue
        value: 0.228
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.111
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.519
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.43
      additional property: Key Name
        type: PropertyValue
        value: Eb
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Cuphead
  type: MusicAlbum
  date published: 2023-03-23