MC Matheuzinho
type: MusicGroup
genre: forró
genre: piseiro
popularity: 7
followers: 17
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8f9e9e085fe02a3b22d0799f5de934a757a870e7b42c2a58f81bf5014dfaf9a4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954097
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954097
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7b37bf7a-c28e-4f51-9b02-f85d57434138.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7b37bf7a-c28e-4f51-9b02-f85d57434138.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7b37bf7a-c28e-4f51-9b02-f85d57434138
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T13:13:51Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8f9e9e085fe02a3b22d0799f5de934a757a870e7b42c2a58f81bf5014dfaf9a4","name":"MC Matheuzinho","registered_at":"2026-06-17T08:27:37Z","symbol":"NIM1338150","token_address":"0xc9a23e96dc8bf9b870b6a7c8f5f9d8189499977c","type":"artist","uuid":"7b37bf7a-c28e-4f51-9b02-f85d57434138"}
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 0x8f9e9e085fe02a3b22d0799f5de934a757a870e7b42c2a58f81bf5014dfaf9a4. Chain 2 (Bitcoin): anchored in block 954097 (2026-06-17T13:13:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b37bf7a-c28e-4f51-9b02-f85d57434138.json and https://artists.proofprofile.net/proofs/artist/7b37bf7a-c28e-4f51-9b02-f85d57434138.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T13:13:51Z
  text: {"copyright_id":"0x8f9e9e085fe02a3b22d0799f5de934a757a870e7b42c2a58f81bf5014dfaf9a4","name":"MC Matheuzinho","registered_at":"2026-06-17T08:27:37Z","symbol":"NIM1338150","token_address":"0xc9a23e96dc8bf9b870b6a7c8f5f9d8189499977c","type":"artist","uuid":"7b37bf7a-c28e-4f51-9b02-f85d57434138"}
album: Tara Metade
  type: MusicAlbum
  date published: 2022-02-05
  track: Tara Metade
    type: MusicRecording
    duration: PT2M35S
    duration ms: 155121
    explicit: false
    by artist: MC Matheuzinho
    in album: Tara Metade
      type: MusicAlbum
      date published: 2022-02-05
    genre: forró
    genre: piseiro
    isrc code: BCSUV2200060
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T11:06:47+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xb2448d770399064134a94c71d93119a2e6af51802024f0525f805b9ebb7b754d
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956545
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956545
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BCSUV2200060
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T19:59:51Z
    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 0xb2448d770399064134a94c71d93119a2e6af51802024f0525f805b9ebb7b754d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BCSUV2200060.
      date published: 2026-07-03T19:59:51Z
    audio: Tara Metade
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 164.003
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.76
      additional property: Energy
        type: PropertyValue
        value: 0.81
      additional property: Speechiness
        type: PropertyValue
        value: 0.061
      additional property: Acousticness
        type: PropertyValue
        value: 0.044
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.031
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.9
      additional property: Loudness (dB)
        type: PropertyValue
        value: -2.234
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Bonde das Novinhas
  type: MusicAlbum
  date published: 2022-02-25
  track: Bonde das Novinhas
    type: MusicRecording
    duration: PT2M9S
    duration ms: 129264
    explicit: false
    by artist: MC Matheuzinho
    in album: Bonde das Novinhas
      type: MusicAlbum
      date published: 2022-02-25
    genre: forró
    genre: piseiro
    isrc code: BCSUV2200071
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T14:48:29+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc0afc6450483c321fcadd40a90e61f6035ade3523933ccf440b7603fdf254677
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956545
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956545
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BCSUV2200071
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T19:59:51Z
    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 0xc0afc6450483c321fcadd40a90e61f6035ade3523933ccf440b7603fdf254677. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BCSUV2200071.
      date published: 2026-07-03T19:59:51Z
    audio: Bonde das Novinhas
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 135.979
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.79
      additional property: Energy
        type: PropertyValue
        value: 0.568
      additional property: Speechiness
        type: PropertyValue
        value: 0.037
      additional property: Acousticness
        type: PropertyValue
        value: 0.188
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name

Liveness
type: PropertyValue
value: 0.09

Valence (Positivity)
type: PropertyValue
value: 0.754

Loudness (dB)
type: PropertyValue
value: -4.291

Key Name
type: PropertyValue
value: D

Mode Name
type: PropertyValue
value: Major