D.J. Professor
type: MusicGroup
popularity: 6
followers: 300
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe8cea23c88bf991761635e6e3ceeb25c46d4baa85511f363cd2e28485961befb
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954533
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954533
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a3c81231-a563-40c5-a03f-037796b380cb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a3c81231-a563-40c5-a03f-037796b380cb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a3c81231-a563-40c5-a03f-037796b380cb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T08:57:02Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe8cea23c88bf991761635e6e3ceeb25c46d4baa85511f363cd2e28485961befb","name":"D.J. Professor","registered_at":"2026-06-20T06:43:35Z","symbol":"NIM1544266","token_address":"0x9f898b5523581ddd16dd771c03dc94c08dfd4d29","type":"artist","uuid":"a3c81231-a563-40c5-a03f-037796b380cb"}
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 0xe8cea23c88bf991761635e6e3ceeb25c46d4baa85511f363cd2e28485961befb. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a3c81231-a563-40c5-a03f-037796b380cb.json and https://artists.proofprofile.net/proofs/artist/a3c81231-a563-40c5-a03f-037796b380cb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T08:57:02Z
  text: {"copyright_id":"0xe8cea23c88bf991761635e6e3ceeb25c46d4baa85511f363cd2e28485961befb","name":"D.J. Professor","registered_at":"2026-06-20T06:43:35Z","symbol":"NIM1544266","token_address":"0x9f898b5523581ddd16dd771c03dc94c08dfd4d29","type":"artist","uuid":"a3c81231-a563-40c5-a03f-037796b380cb"}
album: Remixes vol.2
  type: MusicAlbum
  date published: 2009-11-01
album: Runner
  type: MusicAlbum
  date published: 2009-11-01
  track: Runner - Extended Mix
    type: MusicRecording
    duration: PT6M46S
    duration ms: 406693
    explicit: false
    by artist: D.J. Professor
    in album: Runner
      type: MusicAlbum
      date published: 2009-11-01
    isrc code: DEA310909571
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T18:12:32+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xa86187c75b7faf1bcbff4ec31e61dc733b7c2acda81b0329189272d0a8135e76
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958924
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958924
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA310909571
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T21:07:07Z
    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 0xa86187c75b7faf1bcbff4ec31e61dc733b7c2acda81b0329189272d0a8135e76. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:07:07Z), 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/DEA310909571.
      date published: 2026-07-20T21:07:07Z
    audio: Runner - Extended Mix
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 122.988
      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: 0.632
      additional property: Energy
        type: PropertyValue
        value: 0.863
      additional property: Speechiness
        type: PropertyValue
        value: 0.033
      additional property: Acousticness
        type: PropertyValue
        value: 0.032
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.296
      additional property: Liveness
        type: PropertyValue
        value: 0.138
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.56
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.879
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Rock me steady
  type: MusicAlbum
  date published: 2009-11-01
album: Remixes vol.2
  type: MusicAlbum
  date published: 2009-11-01
album: UNRELEASED PROJECTS
  type: MusicAlbum
  date published: 2009-11-01
album: Remixes vol.1
  type: MusicAlbum
  date published: 2009-11-01
album: UNRELEASED PROJECTS
  type: MusicAlbum
  date published: 2009-11-01
album: Rock me steady
  type: MusicAlbum
  date published: 2009-11-01
album: NOW WE ARE PRESENTING.........
  type: MusicAlbum
  date published: 2009-11-01
album: OTHER REMIXES VOL.2
  type: MusicAlbum
  date published: 2009-11-01
album: NOW WE ARE PRESENTING.........
  type: MusicAlbum
  date published: 2009-11-01
album: Remixes vol.1
  type: MusicAlbum
  date published: 2009-11-01
album: OTHER REMIXES VOL.2
  type: MusicAlbum
  date published: 2009-11-01
album: Runner
  type: MusicAlbum
  date published: 2009-11-01
album: Love Me
  type: MusicAlbum
  date published: 2010-09-21
album: We Gotta Do It
  type: MusicAlbum
  date published: 2010-09-21
album: Rock Me Steady
  type: MusicAlbum
  date published: 2010-09-21