Yoo Jongkwon
type: MusicGroup
genre: k-ballad
popularity: 3
followers: 194
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdb425394b95eb8855870e4b5a452773461920086d07ec2ed50bf42c9c999844a
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/6d1042b3-3a5c-423a-a23f-45be1eab57de.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6d1042b3-3a5c-423a-a23f-45be1eab57de.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6d1042b3-3a5c-423a-a23f-45be1eab57de
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xdb425394b95eb8855870e4b5a452773461920086d07ec2ed50bf42c9c999844a","name":"Yoo Jongkwon","registered_at":"2026-06-17T03:39:31Z","symbol":"NIM1269448","token_address":"0xbff203528651b83f256dde3635abaa7a064d126a","type":"artist","uuid":"6d1042b3-3a5c-423a-a23f-45be1eab57de"}
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 0xdb425394b95eb8855870e4b5a452773461920086d07ec2ed50bf42c9c999844a. 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/6d1042b3-3a5c-423a-a23f-45be1eab57de.json and https://artists.proofprofile.net/proofs/artist/6d1042b3-3a5c-423a-a23f-45be1eab57de.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xdb425394b95eb8855870e4b5a452773461920086d07ec2ed50bf42c9c999844a","name":"Yoo Jongkwon","registered_at":"2026-06-17T03:39:31Z","symbol":"NIM1269448","token_address":"0xbff203528651b83f256dde3635abaa7a064d126a","type":"artist","uuid":"6d1042b3-3a5c-423a-a23f-45be1eab57de"}
album: As I Want
  type: MusicAlbum
  date published: 2020-10-20
album: As I Want
  type: MusicAlbum
  date published: 2020-10-20
album: Smaller
  type: MusicAlbum
  date published: 2021-02-20
album: All Up to You
  type: MusicAlbum
  date published: 2023-12-16
album: Love Stays
  type: MusicAlbum
  date published: 2024-03-16
album: Shade of a Tree
  type: MusicAlbum
  date published: 2024-07-22
album: Winter Light
  type: MusicAlbum
  date published: 2024-11-27
track: Last Night (with Yoojongkwon)
  type: MusicRecording
  duration: PT3M58S
  duration ms: 238610
  explicit: false
  by artist: saevom
  by artist: Yoo Jongkwon
  in album: Remember
    type: MusicAlbum
    date published: 2020-02-09
  isrc code: KRMIM2002319
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T16:34:48+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xbae752ea9d45bdb54f05039f2832864c40556f63dc9f9e6c5faceeec7f26f44c
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957118
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957118
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRMIM2002319
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:20:19Z
  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 0xbae752ea9d45bdb54f05039f2832864c40556f63dc9f9e6c5faceeec7f26f44c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/KRMIM2002319.
    date published: 2026-07-08T03:20:19Z
  audio: Last Night (with Yoojongkwon)
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 115.292
    additional property: Musical Key
      type: PropertyValue
      value: 11
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.723
    additional property: Energy
      type: PropertyValue
      value: 0.45
    additional property: Speechiness
      type: PropertyValue
      value: 0.026
    additional property: Acousticness
      type: PropertyValue
      value: 0.328
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.264
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.573
    additional property: Loudness (dB)
      type: PropertyValue
      value: -12.446
    additional property: Key Name
      type: PropertyValue
      value: B
    additional property: Mode Name
      type: PropertyValue
      value: Major