t. Policarpo
type: MusicGroup
genre: portuguese hip hop
popularity: 9
followers: 254
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbbd8d821a5da46742650a4c84793862a0eb57f52ab2ed06f24193b3dcca31fdf
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/58f9ae48-f6f5-461d-9c52-a29b36e8e3f5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/58f9ae48-f6f5-461d-9c52-a29b36e8e3f5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/58f9ae48-f6f5-461d-9c52-a29b36e8e3f5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbbd8d821a5da46742650a4c84793862a0eb57f52ab2ed06f24193b3dcca31fdf","name":"t. Policarpo","registered_at":"2026-06-16T20:45:14Z","symbol":"NIM1170604","token_address":"0x626d097bf7b70a89b8cfb2765fe698614fa52579","type":"artist","uuid":"58f9ae48-f6f5-461d-9c52-a29b36e8e3f5"}
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 0xbbd8d821a5da46742650a4c84793862a0eb57f52ab2ed06f24193b3dcca31fdf. 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/58f9ae48-f6f5-461d-9c52-a29b36e8e3f5.json and https://artists.proofprofile.net/proofs/artist/58f9ae48-f6f5-461d-9c52-a29b36e8e3f5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xbbd8d821a5da46742650a4c84793862a0eb57f52ab2ed06f24193b3dcca31fdf","name":"t. Policarpo","registered_at":"2026-06-16T20:45:14Z","symbol":"NIM1170604","token_address":"0x626d097bf7b70a89b8cfb2765fe698614fa52579","type":"artist","uuid":"58f9ae48-f6f5-461d-9c52-a29b36e8e3f5"}
album: GREATNESS
  type: MusicAlbum
  date published: 2020-04-17
album: GOING HOME
  type: MusicAlbum
  date published: 2020-06-27
album: Açúcar Mascavado
  type: MusicAlbum
  date published: 2023-11-17
album: Volkswagen Antigo
  type: MusicAlbum
  date published: 2024-04-19
album: Vidros
  type: MusicAlbum
  date published: 2024-09-27
  track: Vidros
    type: MusicRecording
    duration: PT3M14S
    duration ms: 194300
    explicit: false
    by artist: t. Policarpo
    in album: Vidros
      type: MusicAlbum
      date published: 2024-09-27
    genre: portuguese hip hop
    isrc code: QZTBB2428576
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T12:52:13+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xbe69bb07b4d6725e4899d7bd219a862828ae6857903cdde65e99e9026f0b5ffd
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956826
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956826
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBB2428576
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T19:27:56Z
    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 0xbe69bb07b4d6725e4899d7bd219a862828ae6857903cdde65e99e9026f0b5ffd. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZTBB2428576.
      date published: 2026-07-05T19:27:56Z
    audio: Vidros
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 100.48
      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: 0.546
      additional property: Energy
        type: PropertyValue
        value: 0.575
      additional property: Speechiness
        type: PropertyValue
        value: 0.312
      additional property: Acousticness
        type: PropertyValue
        value: 0.673
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.159
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.777
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.892
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Amanhã Falamos
  type: MusicAlbum
  date published: 2025-01-10
  track: Amanhã Falamos
    type: MusicRecording
    duration: PT3M36S
    duration ms: 216388
    explicit: false
    by artist: t. Policarpo
    in album: Amanhã Falamos
      type: MusicAlbum
      date published: 2025-01-10
    genre: portuguese hip hop
    isrc code: QT3F22443165
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T07:37:00+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xdb2b568421636aadb0e9d40bcb58a45e29079511ea1db61ad3e219e08812dc3d
    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/QT3F22443165
    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 0xdb2b568421636aadb0e9d40bcb58a45e29079511ea1db61ad3e219e08812dc3d. 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/QT3F22443165.
      date published: 2026-07-04T11:19:20Z
    audio: Amanhã Falamos
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 169.963
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.529
      additional property: Energy
        type: PropertyValue
        value: 0.632
      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: Algemas

Speechiness
type: PropertyValue
value: 0.095

Acousticness
type: PropertyValue
value: 0.766

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.117

Valence (Positivity)
type: PropertyValue
value: 0.87

Loudness (dB)
type: PropertyValue
value: -8.292

Key Name
type: PropertyValue
value: F

Mode Name
type: PropertyValue
value: Minor

Algemas
type: MusicAlbum
date published: 2025-07-25
track: Algemas
  type: MusicRecording
  duration: PT2M34S
  duration ms: 154926
  explicit: false
  by artist: t. Policarpo
  in album: Algemas
    type: MusicAlbum
    date published: 2025-07-25
  genre: portuguese hip hop
  isrc code: QZWFG2557176
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-20T16:16:28+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xfc8c3df6294d26139683a234e5f8ec200dd0044a7542bff7c512659b4a4c2b77
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958911
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958911
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFG2557176
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-20T19:19:13Z
  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 0xfc8c3df6294d26139683a234e5f8ec200dd0044a7542bff7c512659b4a4c2b77. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:19:13Z), 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/QZWFG2557176.
    date published: 2026-07-20T19:19:13Z
  audio: Algemas
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 88.432
    additional property: Musical Key
      type: PropertyValue
      value: 8
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.566
    additional property: Energy
      type: PropertyValue
      value: 0.475
    additional property: Speechiness
      type: PropertyValue
      value: 0.283
    additional property: Acousticness
      type: PropertyValue
      value: 0.336
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.16
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.321
    additional property: Loudness (dB)
      type: PropertyValue
      value: -7.482
    additional property: Key Name
      type: PropertyValue
      value: Ab
    additional property: Mode Name
      type: PropertyValue
      value: Major