Dj Efrain
type: MusicGroup
popularity: 5
followers: 75
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf02da99959a1d9e4bf30fa84b8f30757ca74a70f2d3b9803ff08fc89d1d459f1
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/5b3b75bb-ca04-4c15-99ee-a181b6fb0d37.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5b3b75bb-ca04-4c15-99ee-a181b6fb0d37.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5b3b75bb-ca04-4c15-99ee-a181b6fb0d37
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf02da99959a1d9e4bf30fa84b8f30757ca74a70f2d3b9803ff08fc89d1d459f1","name":"Dj Efrain","registered_at":"2026-06-16T21:18:25Z","symbol":"NIM1178520","token_address":"0x45b549da85228c924da9d528594a14acdb17fc5a","type":"artist","uuid":"5b3b75bb-ca04-4c15-99ee-a181b6fb0d37"}
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 0xf02da99959a1d9e4bf30fa84b8f30757ca74a70f2d3b9803ff08fc89d1d459f1. 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/5b3b75bb-ca04-4c15-99ee-a181b6fb0d37.json and https://artists.proofprofile.net/proofs/artist/5b3b75bb-ca04-4c15-99ee-a181b6fb0d37.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xf02da99959a1d9e4bf30fa84b8f30757ca74a70f2d3b9803ff08fc89d1d459f1","name":"Dj Efrain","registered_at":"2026-06-16T21:18:25Z","symbol":"NIM1178520","token_address":"0x45b549da85228c924da9d528594a14acdb17fc5a","type":"artist","uuid":"5b3b75bb-ca04-4c15-99ee-a181b6fb0d37"}
album: YO VOY REMIX
  type: MusicAlbum
  date published: 2023-10-21
album: Toma Tra (Perreo)
  type: MusicAlbum
  date published: 2023-12-01
album: MIX REGGAETON ANTIGUO
  type: MusicAlbum
  date published: 2024-04-22
  track: MIX REGGAETON ANTIGUO
    type: MusicRecording
    duration: PT5M17S
    duration ms: 317662
    explicit: true
    by artist: Dj Efrain
    in album: MIX REGGAETON ANTIGUO
      type: MusicAlbum
      date published: 2024-04-22
    isrc code: QZK6L2480654
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T07:08:38+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x7760fc772a3a60ebaa8d6190a08d420d52d1e9dc0674ca11b01406587e466226
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956634
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956634
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6L2480654
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T10:04:33Z
    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 0x7760fc772a3a60ebaa8d6190a08d420d52d1e9dc0674ca11b01406587e466226. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZK6L2480654.
      date published: 2026-07-04T10:04:33Z
    audio: MIX REGGAETON ANTIGUO
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 96.014
      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: 0.736
      additional property: Energy
        type: PropertyValue
        value: 0.883
      additional property: Speechiness
        type: PropertyValue
        value: 0.054
      additional property: Acousticness
        type: PropertyValue
        value: 0.104
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.329
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.622
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.516
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: PA QUE PERREE
  type: MusicAlbum
  date published: 2024-07-16
album: MIX PERREO 2025
  type: MusicAlbum
  date published: 2024-12-03
album: MIX PERREO SALVAJE 2025
  type: MusicAlbum
  date published: 2025-05-16
album: MIX INTROS DE REGGAETON ANTIGUO
  type: MusicAlbum
  date published: 2025-08-10
album: MIX PERREO INTENSO 2025
  type: MusicAlbum
  date published: 2025-08-29
album: MIX PERREO SALVAJE 2025 (VOL.02)
  type: MusicAlbum
  date published: 2025-11-03