張婉清
type: MusicGroup
popularity: 2
followers: 87
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8a5a9f9bb9767d9743482878b0707fdd9a021fbbc5624672a5d3ec6a34e62fb7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954728
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954728
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f802a7c7-c863-4abb-9faf-318f7c6188bb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f802a7c7-c863-4abb-9faf-318f7c6188bb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f802a7c7-c863-4abb-9faf-318f7c6188bb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T18:08:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8a5a9f9bb9767d9743482878b0707fdd9a021fbbc5624672a5d3ec6a34e62fb7","name":"張婉清","registered_at":"2026-06-21T16:01:23Z","symbol":"NIM1966777","token_address":"0xcf4ae52ed368caa158474d2ea45e02514b9327aa","type":"artist","uuid":"f802a7c7-c863-4abb-9faf-318f7c6188bb"}
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 0x8a5a9f9bb9767d9743482878b0707fdd9a021fbbc5624672a5d3ec6a34e62fb7. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f802a7c7-c863-4abb-9faf-318f7c6188bb.json and https://artists.proofprofile.net/proofs/artist/f802a7c7-c863-4abb-9faf-318f7c6188bb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T18:08:38Z
  text: {"copyright_id":"0x8a5a9f9bb9767d9743482878b0707fdd9a021fbbc5624672a5d3ec6a34e62fb7","name":"張婉清","registered_at":"2026-06-21T16:01:23Z","symbol":"NIM1966777","token_address":"0xcf4ae52ed368caa158474d2ea45e02514b9327aa","type":"artist","uuid":"f802a7c7-c863-4abb-9faf-318f7c6188bb"}
album: 向我
  type: MusicAlbum
  date published: 2018-06-29