Matheus Kennedy
type: MusicGroup
genre: arrocha
genre: forró
popularity: 7
followers: 224
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6cfa995ba8f60dfe8fa42642e8e09716633f3842d83200c8153b0c6928f727ef
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/de64139d-3c4b-4441-b3f4-3494e840a055.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/de64139d-3c4b-4441-b3f4-3494e840a055.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/de64139d-3c4b-4441-b3f4-3494e840a055
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6cfa995ba8f60dfe8fa42642e8e09716633f3842d83200c8153b0c6928f727ef","name":"Matheus Kennedy","registered_at":"2026-06-21T05:37:27Z","symbol":"NIM1836030","token_address":"0xcafeba1d70cf73bc32e15aa0ae6af901922c3c86","type":"artist","uuid":"de64139d-3c4b-4441-b3f4-3494e840a055"}
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 0x6cfa995ba8f60dfe8fa42642e8e09716633f3842d83200c8153b0c6928f727ef. 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/de64139d-3c4b-4441-b3f4-3494e840a055.json and https://artists.proofprofile.net/proofs/artist/de64139d-3c4b-4441-b3f4-3494e840a055.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x6cfa995ba8f60dfe8fa42642e8e09716633f3842d83200c8153b0c6928f727ef","name":"Matheus Kennedy","registered_at":"2026-06-21T05:37:27Z","symbol":"NIM1836030","token_address":"0xcafeba1d70cf73bc32e15aa0ae6af901922c3c86","type":"artist","uuid":"de64139d-3c4b-4441-b3f4-3494e840a055"}
album: Eu Quero Meu Bebê de Volta
  type: MusicAlbum
  date published: 2020-07-03
album: Profissional do Amor
  type: MusicAlbum
  date published: 2020-08-29
  track: Profissional do Amor
    type: MusicRecording
    duration: PT2M43S
    duration ms: 163538
    explicit: false
    by artist: Matheus Kennedy
    in album: Profissional do Amor
      type: MusicAlbum
      date published: 2020-08-29
    genre: arrocha
    genre: forró
    isrc code: BCSIU2000172
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T05:37:49+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xff0e6e1f4ca721c2e10b36b3301d4a8d1f39a6dc25ea0326a306200213e1445a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956776
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956776
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BCSIU2000172
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T10:59:37Z
    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 0xff0e6e1f4ca721c2e10b36b3301d4a8d1f39a6dc25ea0326a306200213e1445a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BCSIU2000172.
      date published: 2026-07-05T10:59:37Z
    audio: Profissional do Amor
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 123.037
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.571
      additional property: Energy
        type: PropertyValue
        value: 0.602
      additional property: Speechiness
        type: PropertyValue
        value: 0.176
      additional property: Acousticness
        type: PropertyValue
        value: 0.249
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.554
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.815
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.857
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Boyzinho do Morro
  type: MusicAlbum
  date published: 2020-11-13
album: Último Tchau
  type: MusicAlbum
  date published: 2025-10-11
  track: Último Tchau
    type: MusicRecording
    duration: PT1M54S
    duration ms: 114236
    explicit: false
    by artist: Matheus Kennedy
    in album: Último Tchau
      type: MusicAlbum
      date published: 2025-10-11
    genre: arrocha
    genre: forró
    isrc code: BRSVB2534782
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T01:27:29+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x419df83585bd83fbba4eedf297c6bc0fb909dd47263f0c93c82b74909418bb8a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958808
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958808
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRSVB2534782
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T02:49:15Z
    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 0x419df83585bd83fbba4eedf297c6bc0fb909dd47263f0c93c82b74909418bb8a. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/BRSVB2534782.
      date published: 2026-07-20T02:49:15Z
    audio: Último Tchau
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 69.177
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.444
      additional property: Energy
        type: PropertyValue
        value: 0.621
      additional property: Speechiness
        type: PropertyValue
        value: 0.101
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name

Acousticness
type: PropertyValue
value: 0.829

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.158

Valence (Positivity)
type: PropertyValue
value: 0.566

Loudness (dB)
type: PropertyValue
value: -5.571

Key Name
type: PropertyValue
value: F#

Mode Name
type: PropertyValue
value: Major