김종국
type: MusicGroup
genre: k-ballad
popularity: 2
followers: 183
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfeb366898ebc0cd3a99f336ef3f0c89eea32ad8561b58966f9e1a6f791e92ad5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954002
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954002
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/31f54cbb-702e-485f-9f92-230d11671009.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/31f54cbb-702e-485f-9f92-230d11671009.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/31f54cbb-702e-485f-9f92-230d11671009
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T20:47:12Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xfeb366898ebc0cd3a99f336ef3f0c89eea32ad8561b58966f9e1a6f791e92ad5","name":"김종국","registered_at":"2026-06-16T06:58:51Z","symbol":"NIM0973408","token_address":"0xa0b6d46b362f9a27c707d4276a62c033bf1c03bd","type":"artist","uuid":"31f54cbb-702e-485f-9f92-230d11671009"}
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 0xfeb366898ebc0cd3a99f336ef3f0c89eea32ad8561b58966f9e1a6f791e92ad5. Chain 2 (Bitcoin): anchored in block 954002 (2026-06-16T20:47:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/31f54cbb-702e-485f-9f92-230d11671009.json and https://artists.proofprofile.net/proofs/artist/31f54cbb-702e-485f-9f92-230d11671009.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:47:12Z
  text: {"copyright_id":"0xfeb366898ebc0cd3a99f336ef3f0c89eea32ad8561b58966f9e1a6f791e92ad5","name":"김종국","registered_at":"2026-06-16T06:58:51Z","symbol":"NIM0973408","token_address":"0xa0b6d46b362f9a27c707d4276a62c033bf1c03bd","type":"artist","uuid":"31f54cbb-702e-485f-9f92-230d11671009"}
album: Renaissance
  type: MusicAlbum
  date published: 2001-12-01