MC ZK
type: MusicGroup
popularity: 4
followers: 59
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x75ac07acccf3869499894e7623af7da3ad7f3729252c9472a4ebc2f5b66cb280
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/5b6478bc-cd19-4548-8f48-cfda870fc73c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5b6478bc-cd19-4548-8f48-cfda870fc73c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5b6478bc-cd19-4548-8f48-cfda870fc73c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x75ac07acccf3869499894e7623af7da3ad7f3729252c9472a4ebc2f5b66cb280","name":"MC ZK","registered_at":"2026-06-16T21:28:29Z","symbol":"NIM1180919","token_address":"0xb05775fe211bce565589f655eaa9e311d52ac9ca","type":"artist","uuid":"5b6478bc-cd19-4548-8f48-cfda870fc73c"}
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 0x75ac07acccf3869499894e7623af7da3ad7f3729252c9472a4ebc2f5b66cb280. 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/5b6478bc-cd19-4548-8f48-cfda870fc73c.json and https://artists.proofprofile.net/proofs/artist/5b6478bc-cd19-4548-8f48-cfda870fc73c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x75ac07acccf3869499894e7623af7da3ad7f3729252c9472a4ebc2f5b66cb280","name":"MC ZK","registered_at":"2026-06-16T21:28:29Z","symbol":"NIM1180919","token_address":"0xb05775fe211bce565589f655eaa9e311d52ac9ca","type":"artist","uuid":"5b6478bc-cd19-4548-8f48-cfda870fc73c"}
album: Diadema Zona Sul
  type: MusicAlbum
  date published: 2024-07-19
album: Não Vacila
  type: MusicAlbum
  date published: 2024-11-20
album: Mó Saudade
  type: MusicAlbum
  date published: 2024-11-21
album: Persistência é o Caso
  type: MusicAlbum
  date published: 2024-11-28
album: Gamou
  type: MusicAlbum
  date published: 2024-12-05
album: Sacrifícios
  type: MusicAlbum
  date published: 2024-12-16
album: Século 21
  type: MusicAlbum
  date published: 2024-12-23
album: Orações
  type: MusicAlbum
  date published: 2024-12-26
album: Lancinho Comigo
  type: MusicAlbum
  date published: 2024-12-28
album: Caminhos
  type: MusicAlbum
  date published: 2025-01-02
album: Papo De Maloqueiro
  type: MusicAlbum
  date published: 2025-01-08
album: Pé na Areia
  type: MusicAlbum
  date published: 2025-02-13
album: Vivência De Milhão
  type: MusicAlbum
  date published: 2025-02-20
album: Céu é o Limite
  type: MusicAlbum
  date published: 2025-02-23
album: Bandido
  type: MusicAlbum
  date published: 2025-03-04
album: Não Olho pra Trás
  type: MusicAlbum
  date published: 2025-03-29
  track: Não Olho pra Trás
    type: MusicRecording
    duration: PT2M44S
    duration ms: 164653
    explicit: false
    by artist: MC ZK
    in album: Não Olho pra Trás
      type: MusicAlbum
      date published: 2025-03-29
    isrc code: BKBSS2500384
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T08:09:15+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xeb40e6c42aed43829b0f8a1d267aa755a4ac193a396238f760656c22ae1de9dd
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956639
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956639
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKBSS2500384
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T11:19:20Z
    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 0xeb40e6c42aed43829b0f8a1d267aa755a4ac193a396238f760656c22ae1de9dd. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BKBSS2500384.
      date published: 2026-07-04T11:19:20Z
    audio: Não Olho pra Trás
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 129.841
      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: 0.887
      additional property: Energy
        type: PropertyValue
        value: 0.345
      additional property: Speechiness
        type: PropertyValue
        value: 0.778
      additional property: Acousticness
        type: PropertyValue
        value: 0.707
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.14
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.79
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.254
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Preto é a Minha Essência
  type: MusicAlbum
  date published: 2025-09-18
  track: Preto é a Minha Essência
    type: MusicRecording
    duration: PT3M12S
    duration ms: 192923
    explicit: true
    by artist: MC ZK
    in album: Preto é a Minha Essência
      type: MusicAlbum
      date published: 2025-09-18
    isrc code: BKBSS2500740
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-13T01:37:42+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x1750755225637c0fe1b8e69d646f89d46598507b9f65178c2fa8d5f9ee2cd78a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957788
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957788
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKBSS2500740
    additional property: OTSTimestamp
    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
    audio: Preto é a Minha Essência
album: Pagar Pra Ver

OTSTimestamp
type: PropertyValue
value: 2026-07-13T02:37:37Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1750755225637c0fe1b8e69d646f89d46598507b9f65178c2fa8d5f9ee2cd78a. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/BKBSS2500740.
date published: 2026-07-13T02:37:37Z

Preto é a Minha Essência
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 129.967
additional property: Musical Key
  type: PropertyValue
  value: 1
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.91
additional property: Energy
  type: PropertyValue
  value: 0.415
additional property: Speechiness
  type: PropertyValue
  value: 0.415
additional property: Acousticness
  type: PropertyValue
  value: 0.008
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.157
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.314
additional property: Loudness (dB)
  type: PropertyValue
  value: -10.45
additional property: Key Name
  type: PropertyValue
  value: C#
additional property: Mode Name
  type: PropertyValue
  value: Minor

Pagar Pra Ver
type: MusicAlbum
date published: 2025-10-07