Mashur & Kevlar
type: MusicGroup
genre: dubstep
popularity: 7
followers: 595
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x909fe232dc2f38b924c994af94f2a31783b2085fd281cabc86b93e981e5c4c12
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954516
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954516
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a26d7562-dd65-430e-8c67-dbb5033c2cff.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a26d7562-dd65-430e-8c67-dbb5033c2cff.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a26d7562-dd65-430e-8c67-dbb5033c2cff
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T07:04:44Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x909fe232dc2f38b924c994af94f2a31783b2085fd281cabc86b93e981e5c4c12","name":"Mashur & Kevlar","registered_at":"2026-06-20T06:01:30Z","symbol":"NIM1534307","token_address":"0xcd21bfb36e9e7e93fb347c08be1ffebea68635ff","type":"artist","uuid":"a26d7562-dd65-430e-8c67-dbb5033c2cff"}
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 0x909fe232dc2f38b924c994af94f2a31783b2085fd281cabc86b93e981e5c4c12. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a26d7562-dd65-430e-8c67-dbb5033c2cff.json and https://artists.proofprofile.net/proofs/artist/a26d7562-dd65-430e-8c67-dbb5033c2cff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T07:04:44Z
  text: {"copyright_id":"0x909fe232dc2f38b924c994af94f2a31783b2085fd281cabc86b93e981e5c4c12","name":"Mashur & Kevlar","registered_at":"2026-06-20T06:01:30Z","symbol":"NIM1534307","token_address":"0xcd21bfb36e9e7e93fb347c08be1ffebea68635ff","type":"artist","uuid":"a26d7562-dd65-430e-8c67-dbb5033c2cff"}
album: Too Much Pressure
  type: MusicAlbum
  date published: 2012-11-19
album: Black Hole Joyride
  type: MusicAlbum
  date published: 2013-01-03
album: Finale
  type: MusicAlbum
  date published: 2014-06-16
  track: Finale - Original Mix
    type: MusicRecording
    duration: PT5M38S
    duration ms: 338454
    explicit: false
    by artist: Mashur & Kevlar
    in album: Finale
      type: MusicAlbum
      date published: 2014-06-16
    genre: dubstep
    isrc code: USLZJ1412849
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-30T03:48:18+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xbff259fd03c11ef5ccf39e4bbe82d8e428607bd16aff7be31462bcfb2f20ac83
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956375
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956375
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLZJ1412849
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T16:51:38Z
    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 0xbff259fd03c11ef5ccf39e4bbe82d8e428607bd16aff7be31462bcfb2f20ac83. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USLZJ1412849.
      date published: 2026-07-02T16:51:38Z
    audio: Finale - Original Mix
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 145.003
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.532
      additional property: Energy
        type: PropertyValue
        value: 0.806
      additional property: Speechiness
        type: PropertyValue
        value: 0.037
      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.324
      additional property: Liveness
        type: PropertyValue
        value: 0.132
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.177
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.955
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Minor