ZANG HAOZI
type: MusicGroup
popularity: 11
followers: 4
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xaa7721726cfffb5c393717464898a756f01d25d6ccefb60f20715d2454586c0b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953807
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953807
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f13896e1-be12-4080-9d32-b80d3e2d22dc.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f13896e1-be12-4080-9d32-b80d3e2d22dc.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f13896e1-be12-4080-9d32-b80d3e2d22dc
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T16:39:18Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xaa7721726cfffb5c393717464898a756f01d25d6ccefb60f20715d2454586c0b","name":"ZANG HAOZI","registered_at":"2026-06-15T05:52:42Z","symbol":"NIM0702218","token_address":"0x43d15be96a3034982bbbed4453fea323ab28308c","type":"artist","uuid":"f13896e1-be12-4080-9d32-b80d3e2d22dc"}
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 0xaa7721726cfffb5c393717464898a756f01d25d6ccefb60f20715d2454586c0b. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f13896e1-be12-4080-9d32-b80d3e2d22dc.json and https://artists.proofprofile.net/proofs/artist/f13896e1-be12-4080-9d32-b80d3e2d22dc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T16:45:15Z
  text: {"copyright_id":"0xaa7721726cfffb5c393717464898a756f01d25d6ccefb60f20715d2454586c0b","name":"ZANG HAOZI","registered_at":"2026-06-15T05:52:42Z","symbol":"NIM0702218","token_address":"0x43d15be96a3034982bbbed4453fea323ab28308c","type":"artist","uuid":"f13896e1-be12-4080-9d32-b80d3e2d22dc"}