김효근
type: MusicGroup
genre: art pop
popularity: 3
followers: 113
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd692ead89ea1ad3fdb27df6c5b29ddf0712f3c63fba43ec73e78e49e7113fbdf
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954573
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954573
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b56a2054-3687-453a-ac8b-3de0a6b2a190.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b56a2054-3687-453a-ac8b-3de0a6b2a190.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b56a2054-3687-453a-ac8b-3de0a6b2a190
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T15:45:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd692ead89ea1ad3fdb27df6c5b29ddf0712f3c63fba43ec73e78e49e7113fbdf","name":"김효근","registered_at":"2026-06-20T14:14:00Z","symbol":"NIM1631478","token_address":"0x5e7d0e945ad8647ae24154dbe4a2ec8830eec7a1","type":"artist","uuid":"b56a2054-3687-453a-ac8b-3de0a6b2a190"}
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 0xd692ead89ea1ad3fdb27df6c5b29ddf0712f3c63fba43ec73e78e49e7113fbdf. Chain 2 (Bitcoin): anchored in block 954573 (2026-06-20T15:45:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b56a2054-3687-453a-ac8b-3de0a6b2a190.json and https://artists.proofprofile.net/proofs/artist/b56a2054-3687-453a-ac8b-3de0a6b2a190.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T15:45:29Z
  text: {"copyright_id":"0xd692ead89ea1ad3fdb27df6c5b29ddf0712f3c63fba43ec73e78e49e7113fbdf","name":"김효근","registered_at":"2026-06-20T14:14:00Z","symbol":"NIM1631478","token_address":"0x5e7d0e945ad8647ae24154dbe4a2ec8830eec7a1","type":"artist","uuid":"b56a2054-3687-453a-ac8b-3de0a6b2a190"}
album: 송기창 (내 영혼 바람되어 2016)
  type: MusicAlbum
  date published: 2016-11-21
album: ARTPOP SONGS OF HYOGUN KYM - ELLIM HALL LIVE 2019
  type: MusicAlbum
  date published: 2019-10-18
album: The Most Beautiful Song
  type: MusicAlbum
  date published: 2022-04-11
album: WHAT THOUGH LIFE CONSPIRE TO CHEAT YOU
  type: MusicAlbum
  date published: 2022-10-07
album: THE MOST BEAUTIFUL SONG
  type: MusicAlbum
  date published: 2022-10-14
album: Snow
  type: MusicAlbum
  date published: 2022-11-23