DEF 73
type: MusicGroup
genre: emo rap
popularity: 2
followers: 66
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9424e4b62f4cb6ad784c41f333f5aa08e5cde3b8b046c033d4c51ac2fecc653c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954659
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954659
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/dc1e2f19-3a4d-46aa-87a4-63ca77d892b9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/dc1e2f19-3a4d-46aa-87a4-63ca77d892b9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/dc1e2f19-3a4d-46aa-87a4-63ca77d892b9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T06:14:42Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9424e4b62f4cb6ad784c41f333f5aa08e5cde3b8b046c033d4c51ac2fecc653c","name":"DEF 73","registered_at":"2026-06-21T04:43:33Z","symbol":"NIM1823419","token_address":"0x6890a08d33c68c7217e9c922071254940ad2ebcd","type":"artist","uuid":"dc1e2f19-3a4d-46aa-87a4-63ca77d892b9"}
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 0x9424e4b62f4cb6ad784c41f333f5aa08e5cde3b8b046c033d4c51ac2fecc653c. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dc1e2f19-3a4d-46aa-87a4-63ca77d892b9.json and https://artists.proofprofile.net/proofs/artist/dc1e2f19-3a4d-46aa-87a4-63ca77d892b9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T06:14:42Z
  text: {"copyright_id":"0x9424e4b62f4cb6ad784c41f333f5aa08e5cde3b8b046c033d4c51ac2fecc653c","name":"DEF 73","registered_at":"2026-06-21T04:43:33Z","symbol":"NIM1823419","token_address":"0x6890a08d33c68c7217e9c922071254940ad2ebcd","type":"artist","uuid":"dc1e2f19-3a4d-46aa-87a4-63ca77d892b9"}
album: Coleção de Facas
  type: MusicAlbum
  date published: 2022-10-10
album: See the Light
  type: MusicAlbum
  date published: 2022-12-06
album: Todo Lugar
  type: MusicAlbum
  date published: 2023-01-17
album: Tipo Cocaína II
  type: MusicAlbum
  date published: 2023-01-27
  track: Tipo Cocaína II
    type: MusicRecording
    duration: PT2M26S
    duration ms: 146156
    explicit: true
    by artist: DEF 73
    in album: Tipo Cocaína II
      type: MusicAlbum
      date published: 2023-01-27
    genre: emo rap
    isrc code: BXIV82343490
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T16:14:21+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xbe2bd0f5a3635b3aa79c2532b31dae57f78a316e86e1a5be0fcbdc1236db4713
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959034
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959034
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXIV82343490
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T16:34:25Z
    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 0xbe2bd0f5a3635b3aa79c2532b31dae57f78a316e86e1a5be0fcbdc1236db4713. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/BXIV82343490.
      date published: 2026-07-21T16:34:25Z
    audio: Tipo Cocaína II
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 159.981
      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: 0.387
      additional property: Energy
        type: PropertyValue
        value: 0.496
      additional property: Speechiness
        type: PropertyValue
        value: 0.065
      additional property: Acousticness
        type: PropertyValue
        value: 0.033
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.094
      additional property: Liveness
        type: PropertyValue
        value: 0.172
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.079
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.392
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Poça
  type: MusicAlbum
  date published: 2023-06-14
album: Promessas
  type: MusicAlbum
  date published: 2023-11-04
album: Corredor
  type: MusicAlbum
  date published: 2024-10-10
album: Criaturas
  type: MusicAlbum
  date published: 2024-10-21
album: Neurastenia
  type: MusicAlbum
  date published: 2025-09-03