조규찬
type: MusicGroup
genre: k-ballad
popularity: 2
followers: 97
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd70a2e80ac6f11bb1bb3f474a058e7b9534df01c5b836942e4a55eb52d371b10
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e62fa79d-d808-43b4-b3bb-ea51864b534e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e62fa79d-d808-43b4-b3bb-ea51864b534e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e62fa79d-d808-43b4-b3bb-ea51864b534e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd70a2e80ac6f11bb1bb3f474a058e7b9534df01c5b836942e4a55eb52d371b10","name":"조규찬","registered_at":"2026-06-21T08:58:11Z","symbol":"NIM1882152","token_address":"0xb6605ade4fe15650207a502b3b919d63c9769e72","type":"artist","uuid":"e62fa79d-d808-43b4-b3bb-ea51864b534e"}
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 0xd70a2e80ac6f11bb1bb3f474a058e7b9534df01c5b836942e4a55eb52d371b10. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e62fa79d-d808-43b4-b3bb-ea51864b534e.json and https://artists.proofprofile.net/proofs/artist/e62fa79d-d808-43b4-b3bb-ea51864b534e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0xd70a2e80ac6f11bb1bb3f474a058e7b9534df01c5b836942e4a55eb52d371b10","name":"조규찬","registered_at":"2026-06-21T08:58:11Z","symbol":"NIM1882152","token_address":"0xb6605ade4fe15650207a502b3b919d63c9769e72","type":"artist","uuid":"e62fa79d-d808-43b4-b3bb-ea51864b534e"}
album: Unplugged - Letter From The Moon
  type: MusicAlbum
  date published: 2009
album: 소녀를 만나다 (With O'z)
  type: MusicAlbum
  date published: 2009-08-03
album: 달에서 온 편지
  type: MusicAlbum
  date published: 2009-12-15
album: 9th
  type: MusicAlbum
  date published: 2010-07-27