김서연
type: MusicGroup
popularity: 7
followers: 80
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x28862618211ca104aa5b798a89fb5374f124a65fe825c9a86391257d45f93dec
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954623
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954623
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cc400979-5cb5-4e6d-a48e-687b0658b878.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cc400979-5cb5-4e6d-a48e-687b0658b878.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cc400979-5cb5-4e6d-a48e-687b0658b878
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T23:40:06Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x28862618211ca104aa5b798a89fb5374f124a65fe825c9a86391257d45f93dec","name":"김서연","registered_at":"2026-06-20T23:24:03Z","symbol":"NIM1746220","token_address":"0xa437ae0853b517b2424a2216856097d607d08e52","type":"artist","uuid":"cc400979-5cb5-4e6d-a48e-687b0658b878"}
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 0x28862618211ca104aa5b798a89fb5374f124a65fe825c9a86391257d45f93dec. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cc400979-5cb5-4e6d-a48e-687b0658b878.json and https://artists.proofprofile.net/proofs/artist/cc400979-5cb5-4e6d-a48e-687b0658b878.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T23:40:06Z
  text: {"copyright_id":"0x28862618211ca104aa5b798a89fb5374f124a65fe825c9a86391257d45f93dec","name":"김서연","registered_at":"2026-06-20T23:24:03Z","symbol":"NIM1746220","token_address":"0xa437ae0853b517b2424a2216856097d607d08e52","type":"artist","uuid":"cc400979-5cb5-4e6d-a48e-687b0658b878"}
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  type: MusicAlbum
  date published: 2019-09-22
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  type: MusicAlbum
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