Jang Sung Kyu
type: MusicGroup
genre: k-rap
popularity: 4
followers: 262
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe9f27c6b9916dbb308d4efd30cdd6f9326abb6d4ce57d17746107a7be9ff3232
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954549
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954549
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a8f59975-019e-4eaf-8da1-8683c0a49172.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a8f59975-019e-4eaf-8da1-8683c0a49172.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a8f59975-019e-4eaf-8da1-8683c0a49172
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T10:56:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe9f27c6b9916dbb308d4efd30cdd6f9326abb6d4ce57d17746107a7be9ff3232","name":"Jang Sung Kyu","registered_at":"2026-06-20T08:31:33Z","symbol":"NIM1567138","token_address":"0xf9b6dadc36538130c8fc599ba3b6c24805323007","type":"artist","uuid":"a8f59975-019e-4eaf-8da1-8683c0a49172"}
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 0xe9f27c6b9916dbb308d4efd30cdd6f9326abb6d4ce57d17746107a7be9ff3232. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a8f59975-019e-4eaf-8da1-8683c0a49172.json and https://artists.proofprofile.net/proofs/artist/a8f59975-019e-4eaf-8da1-8683c0a49172.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T10:56:20Z
  text: {"copyright_id":"0xe9f27c6b9916dbb308d4efd30cdd6f9326abb6d4ce57d17746107a7be9ff3232","name":"Jang Sung Kyu","registered_at":"2026-06-20T08:31:33Z","symbol":"NIM1567138","token_address":"0xf9b6dadc36538130c8fc599ba3b6c24805323007","type":"artist","uuid":"a8f59975-019e-4eaf-8da1-8683c0a49172"}
album: WORKMAN
  type: MusicAlbum
  date published: 2020-07-01
  track: WORKMAN (feat. Sik-k, Jay Park) (prod. GroovyRoom)
    type: MusicRecording
    duration: PT2M47S
    duration ms: 167906
    explicit: false
    by artist: Jang Sung Kyu
    in album: WORKMAN
      type: MusicAlbum
      date published: 2020-07-01
    genre: k-rap
    isrc code: KRA382002363
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T19:16:59+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x6445819ca6c9beb2e860bc26723bba39a604c40032969a66bfa1dd1944d01339
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956545
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956545
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA382002363
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T19:59:51Z
    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 0x6445819ca6c9beb2e860bc26723bba39a604c40032969a66bfa1dd1944d01339. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/KRA382002363.
      date published: 2026-07-03T19:59:51Z
    audio: WORKMAN (feat. Sik-k, Jay Park) (prod. GroovyRoom)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 119.97
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.784
      additional property: Energy
        type: PropertyValue
        value: 0.714
      additional property: Speechiness
        type: PropertyValue
        value: 0.08
      additional property: Acousticness
        type: PropertyValue
        value: 0.313
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.112
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.961
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.321
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor