MR-13
type: MusicGroup
genre: boom bap
genre: brazilian hip hop
popularity: 5
followers: 462
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd85bdcfd2f1254d8c69095666bc3d9073f195631f4ad571648602f56ba04ed2c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954553
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954553
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ab8c46dd-c5b0-4ec7-8957-51e26c7dbfee.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ab8c46dd-c5b0-4ec7-8957-51e26c7dbfee.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ab8c46dd-c5b0-4ec7-8957-51e26c7dbfee
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T11:51:30Z
additional property: OTSCanonicalRecord
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 0xd85bdcfd2f1254d8c69095666bc3d9073f195631f4ad571648602f56ba04ed2c. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab8c46dd-c5b0-4ec7-8957-51e26c7dbfee.json and https://artists.proofprofile.net/proofs/artist/ab8c46dd-c5b0-4ec7-8957-51e26c7dbfee.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T11:51:30Z
album: Nada Mais de Antes
  type: MusicAlbum
  date published: 2019-09-02
  track: Detalhes em Hd
    type: MusicRecording
    duration: PT3M46S
    duration ms: 226290
    explicit: false
    by artist: MR-13
    in album: Nada Mais de Antes
      type: MusicAlbum
      date published: 2019-09-02
    genre: boom bap
    genre: brazilian hip hop
    isrc code: BX5LO1900007
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-06T21:20:36+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xb84862104bba4d1496cb68806efa07c05e1e2ef1c1acac14b70ded5199ded61e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957118
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957118
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX5LO1900007
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-08T03:20:19Z
    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 0xb84862104bba4d1496cb68806efa07c05e1e2ef1c1acac14b70ded5199ded61e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BX5LO1900007.
      date published: 2026-07-08T03:20:19Z
    audio: Detalhes em Hd
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 109.159
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.807
      additional property: Energy
        type: PropertyValue
        value: 0.505
      additional property: Speechiness
        type: PropertyValue
        value: 0.32
      additional property: Acousticness
        type: PropertyValue
        value: 0.468
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.085
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.153
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.526
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Minor
  track: Ciclo Venenoso, Pt. 2
    type: MusicRecording
    duration: PT4M40S
    duration ms: 280250
    explicit: false
    by artist: MR-13
    in album: Nada Mais de Antes
      type: MusicAlbum
      date published: 2019-09-02
    genre: boom bap
    genre: brazilian hip hop
    isrc code: BX5LO1900008
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-07T02:04:00+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x15650401ef5d8c69ddec95038f442e192ed08cc321e3e0c8f7683c016446e016
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957118
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957118
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX5LO1900008
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-08T03:20:19Z
    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 0x15650401ef5d8c69ddec95038f442e192ed08cc321e3e0c8f7683c016446e016. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BX5LO1900008.
      date published: 2026-07-08T03:20:19Z
    audio: Ciclo Venenoso, Pt. 2
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 106.437
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.706
      additional property: Energy
        type: PropertyValue
        value: 0.533
      additional property: Speechiness
        type: PropertyValue
        value: 0.339
      additional property: Acousticness
        type: PropertyValue
        value: 0.439
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.628
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.369
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
track: Enquanto Eu Tiver Voz

Loudness (dB)
type: PropertyValue
value: -11.526

Key Name
type: PropertyValue
value: D

Mode Name
type: PropertyValue
value: Major

Enquanto Eu Tiver Voz
type: MusicRecording
duration: PT5M2S
duration ms: 302751
explicit: false
by artist: PrimeiraMente
by artist: Leal
by artist: Raillow
by artist: MR-13
in album: A um Passo do Precipício
  type: MusicAlbum
  date published: 2014-12-20
genre: brazilian-hip-hop
genre: boom-bap
isrc code: US7VG1476693
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-20T06:43:40+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x42bd36b625171acf4adfad029da74a36384b3872e1a745bf5b659ea51fdbb907
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG1476693
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
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 0x42bd36b625171acf4adfad029da74a36384b3872e1a745bf5b659ea51fdbb907. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US7VG1476693.
  date published: 2026-07-02T03:30:09Z
audio: Enquanto Eu Tiver Voz
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 167.037
  additional property: Musical Key
    type: PropertyValue
    value: 11
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.641
  additional property: Energy
    type: PropertyValue
    value: 0.667
  additional property: Speechiness
    type: PropertyValue
    value: 0.477
  additional property: Acousticness
    type: PropertyValue
    value: 0.248
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.108
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.727
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.22
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Major