Qin Qian
type: MusicGroup
description: Qin Qian (born 7 December 1987)Judo Inside is a Chinese judoka who competed at the 2011 World Judo Championships. References External links Category:Living people Category:1987 births Category:
popularity: 2
followers: 3
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4e89cda98b46dc8da02dbc9e3e3dd349a5af0bf65f2dfbc36a110d35f58e2243
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954130
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954130
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7c50a067-3e1a-4047-9a03-6773f1204d17.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7c50a067-3e1a-4047-9a03-6773f1204d17.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7c50a067-3e1a-4047-9a03-6773f1204d17
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T19:07:14Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4e89cda98b46dc8da02dbc9e3e3dd349a5af0bf65f2dfbc36a110d35f58e2243","name":"Qin Qian","registered_at":"2026-06-17T09:00:50Z","symbol":"NIM1346069","token_address":"0x5f065702fe16c4537349c15c13d0fdc83c5c0d8a","type":"artist","uuid":"7c50a067-3e1a-4047-9a03-6773f1204d17"}
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 0x4e89cda98b46dc8da02dbc9e3e3dd349a5af0bf65f2dfbc36a110d35f58e2243. Chain 2 (Bitcoin): anchored in block 954131 (2026-06-17T19:19:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7c50a067-3e1a-4047-9a03-6773f1204d17.json and https://artists.proofprofile.net/proofs/artist/7c50a067-3e1a-4047-9a03-6773f1204d17.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T19:19:19Z
  text: {"copyright_id":"0x4e89cda98b46dc8da02dbc9e3e3dd349a5af0bf65f2dfbc36a110d35f58e2243","name":"Qin Qian","registered_at":"2026-06-17T09:00:50Z","symbol":"NIM1346069","token_address":"0x5f065702fe16c4537349c15c13d0fdc83c5c0d8a","type":"artist","uuid":"7c50a067-3e1a-4047-9a03-6773f1204d17"}