홍다연
type: MusicGroup
genre: c-pop
popularity: 2
followers: 58
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdf049e9125d1d795ffa4f00ffa5776110a62dce176790557a457e95fc1495bde
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/326fc0db-8255-4701-ba45-9024078e7122.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/326fc0db-8255-4701-ba45-9024078e7122.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/326fc0db-8255-4701-ba45-9024078e7122
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T20:47:12Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xdf049e9125d1d795ffa4f00ffa5776110a62dce176790557a457e95fc1495bde","name":"홍다연","registered_at":"2026-06-16T07:10:44Z","symbol":"NIM0976249","token_address":"0x961ec9aac3ee8fc54d2f08bf5115feadcf871915","type":"artist","uuid":"326fc0db-8255-4701-ba45-9024078e7122"}
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 0xdf049e9125d1d795ffa4f00ffa5776110a62dce176790557a457e95fc1495bde. 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/326fc0db-8255-4701-ba45-9024078e7122.json and https://artists.proofprofile.net/proofs/artist/326fc0db-8255-4701-ba45-9024078e7122.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xdf049e9125d1d795ffa4f00ffa5776110a62dce176790557a457e95fc1495bde","name":"홍다연","registered_at":"2026-06-16T07:10:44Z","symbol":"NIM0976249","token_address":"0x961ec9aac3ee8fc54d2f08bf5115feadcf871915","type":"artist","uuid":"326fc0db-8255-4701-ba45-9024078e7122"}
album: 온기 3집
  type: MusicAlbum
  date published: 2021-10-27