Massa Mc
type: MusicGroup
genre: boom bap
popularity: 5
followers: 198
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x57c855bb857a3eccbcc1494e8aeef73b0ab2c07bfd7d102d6ffab128fe416a39
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/56832431-f964-4c28-b204-fc9c694b78ea.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/56832431-f964-4c28-b204-fc9c694b78ea.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/56832431-f964-4c28-b204-fc9c694b78ea
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x57c855bb857a3eccbcc1494e8aeef73b0ab2c07bfd7d102d6ffab128fe416a39","name":"Massa Mc","registered_at":"2026-06-16T19:43:07Z","symbol":"NIM1155774","token_address":"0xa2a0c7a4d511a9ea959e7c2721347affe052eb53","type":"artist","uuid":"56832431-f964-4c28-b204-fc9c694b78ea"}
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 0x57c855bb857a3eccbcc1494e8aeef73b0ab2c07bfd7d102d6ffab128fe416a39. 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/56832431-f964-4c28-b204-fc9c694b78ea.json and https://artists.proofprofile.net/proofs/artist/56832431-f964-4c28-b204-fc9c694b78ea.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x57c855bb857a3eccbcc1494e8aeef73b0ab2c07bfd7d102d6ffab128fe416a39","name":"Massa Mc","registered_at":"2026-06-16T19:43:07Z","symbol":"NIM1155774","token_address":"0xa2a0c7a4d511a9ea959e7c2721347affe052eb53","type":"artist","uuid":"56832431-f964-4c28-b204-fc9c694b78ea"}
album: Antes do Fim do Mundo
  type: MusicAlbum
  date published: 2022-03-21
album: Noites no Brasil
  type: MusicAlbum
  date published: 2023-01-13
album: Pluma
  type: MusicAlbum
  date published: 2023-02-15
album: E Eu Nem Sei Falar de Amor (Porrabaco)
  type: MusicAlbum
  date published: 2023-12-20
album: Pega e Vaza
  type: MusicAlbum
  date published: 2024-07-31
album: Parte De Si
  type: MusicAlbum
  date published: 2025-01-22
  track: Parte De Si
    type: MusicRecording
    duration: PT3M29S
    duration ms: 209741
    explicit: true
    by artist: Massa Mc
    in album: Parte De Si
      type: MusicAlbum
      date published: 2025-01-22
    genre: boom bap
    isrc code: BKDC92500001
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T14:30:24+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xf8c105ffd135bf9331ad5719c9cacb6021bad918e00d425bfc05303b33f66b6d
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956725
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956725
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKDC92500001
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:12:41Z
    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 0xf8c105ffd135bf9331ad5719c9cacb6021bad918e00d425bfc05303b33f66b6d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BKDC92500001.
      date published: 2026-07-05T01:12:41Z
    audio: Parte De Si
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 88.052
      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: 0.687
      additional property: Energy
        type: PropertyValue
        value: 0.483
      additional property: Speechiness
        type: PropertyValue
        value: 0.38
      additional property: Acousticness
        type: PropertyValue
        value: 0.408
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.119
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.661
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.866
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Dádiva
  type: MusicAlbum
  date published: 2025-02-21
  track: Dádiva
    type: MusicRecording
    duration: PT3M24S
    duration ms: 204237
    explicit: false
    by artist: Massa Mc
    in album: Dádiva
      type: MusicAlbum
      date published: 2025-02-21
    genre: boom bap
    isrc code: BKDC92500002
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T01:49:24+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x7be39b33fe18ab36d9bacd39fb2780761090b100e9cf384b5b0def8cca8e21dd
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958951
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958951
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKDC92500002
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T04:51:04Z
    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 0x7be39b33fe18ab36d9bacd39fb2780761090b100e9cf384b5b0def8cca8e21dd. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:51:04Z), 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/BKDC92500002.
      date published: 2026-07-21T04:51:04Z
    audio: Dádiva
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 80.07
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.688
      additional property: Energy
      additional property: Speechiness
      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
album: Allende
album: Calejado
album: Aqui e Agora

Energy
type: PropertyValue
value: 0.355

Speechiness
type: PropertyValue
value: 0.358

Acousticness
type: PropertyValue
value: 0.272

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.11

Valence (Positivity)
type: PropertyValue
value: 0.314

Loudness (dB)
type: PropertyValue
value: -11.86

Key Name
type: PropertyValue
value: C#

Mode Name
type: PropertyValue
value: Major

Allende
type: MusicAlbum
date published: 2025-04-25

Calejado
type: MusicAlbum
date published: 2025-08-20

Aqui e Agora
type: MusicAlbum
date published: 2025-10-01