Bluelk
type: MusicGroup
genre: k-rap
popularity: 3
followers: 410
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc8d816bc85249572729b986f202f84dbbfb483644fe1698c95b430208c61f9c4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953996
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953996
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/30f4058c-1985-4f0e-b9e8-9fe9cc281636.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/30f4058c-1985-4f0e-b9e8-9fe9cc281636.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/30f4058c-1985-4f0e-b9e8-9fe9cc281636
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T20:04:35Z
additional property: OTSCanonicalRecord
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 0xc8d816bc85249572729b986f202f84dbbfb483644fe1698c95b430208c61f9c4. Chain 2 (Bitcoin): anchored in block 953996 (2026-06-16T20:04:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/30f4058c-1985-4f0e-b9e8-9fe9cc281636.json and https://artists.proofprofile.net/proofs/artist/30f4058c-1985-4f0e-b9e8-9fe9cc281636.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:04:35Z
album: CAN'T WAIT
  type: MusicAlbum
  date published: 2019-05-27
album: CAN'T WAIT
  type: MusicAlbum
  date published: 2019-05-27
album: DUDE！
  type: MusicAlbum
  date published: 2019-10-01
album: DUDE!
  type: MusicAlbum
  date published: 2019-10-01
album: 내일 와
  type: MusicAlbum
  date published: 2019-11-21
album: Work n Love
  type: MusicAlbum
  date published: 2020-03-17
album: Push Me
  type: MusicAlbum
  date published: 2020-07-29
album: Before Dawn
  type: MusicAlbum
  date published: 2020-10-15
album: Look Back
  type: MusicAlbum
  date published: 2021-02-09
album: Flat
  type: MusicAlbum
  date published: 2021-03-24
album: BLUE, YOUR MIND
  type: MusicAlbum
  date published: 2021-10-27
album: Call You Back (feat. Blase)
  type: MusicAlbum
  date published: 2022-03-02
  track: Call You Back (feat. Blase)
    type: MusicRecording
    duration: PT3M6S
    duration ms: 186992
    explicit: false
    by artist: Bluelk
    in album: Call You Back (feat. Blase)
      type: MusicAlbum
      date published: 2022-03-02
    genre: k-rap
    isrc code: KRA252200321
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-06T06:16:02+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xdc03afa0b25da1e0ee1a71bcdf7fe9490271be01a1eaf92cd9af6545bab3db88
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956894
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956894
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA252200321
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T07:53:57Z
    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 0xdc03afa0b25da1e0ee1a71bcdf7fe9490271be01a1eaf92cd9af6545bab3db88. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/KRA252200321.
      date published: 2026-07-06T07:53:57Z
    audio: Call You Back (feat. Blase)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 141.756
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.869
      additional property: Energy
        type: PropertyValue
        value: 0.857
      additional property: Speechiness
        type: PropertyValue
        value: 0.147
      additional property: Acousticness
        type: PropertyValue
        value: 0.604
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.06
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.532
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.818
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: kinda blue at the moment
  type: MusicAlbum
  date published: 2022-06-29
album: Escape!
  type: MusicAlbum
  date published: 2023-01-25
album: In Your Pain
  type: MusicAlbum
  date published: 2023-08-29