Title:
OUT-OF-CHAIN DATA ACCESS METHOD AND SYSTEM OF BLOCK CHAIN SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/142790
Kind Code:
A1
Abstract:
An out-of-chain data access method and system of a block chain system. The method comprises: a blockchain system can send a first request to an out-of-chain data source, so that the out-of-chain data source can generate first signature information for target out-of-chain data on the basis of an authentication key of the out-of-chain data source; the out-of-chain data source can return a first response carrying the target out-of-chain data and the first signature information to the blockchain system; and after the first signature information is successfully verified, the blockchain system can determine the credibility of the target out-of-chain data. Therefore, the blockchain system can access the target out-of-chain data, so that smart contracts in the blockchain system can be executed in sequence, trusted access and trusted authentication of the out-of-chain data are achieved, the out-of-chain data accesses from an oracle machine in the blockchain system to the chain of the blockchain system, the credibility of the out-of-chain data is guaranteed, and identity privacy of the out-of-chain data source is also guaranteed.
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Inventors:
CHEN YUJIE (CN)
LI HUIZHONG (CN)
ZHANG KAIXIANG (CN)
FAN RUIBIN (CN)
LI HUIZHONG (CN)
ZHANG KAIXIANG (CN)
FAN RUIBIN (CN)
Application Number:
PCT/CN2021/130769
Publication Date:
July 07, 2022
Filing Date:
November 15, 2021
Export Citation:
Assignee:
WEBANK CO LTD (CN)
International Classes:
G06F21/60
Foreign References:
| CN112651037A | 2021-04-13 | |||
| CN112149184A | 2020-12-29 | |||
| CN112084234A | 2020-12-15 | |||
| CN111737724A | 2020-10-02 | |||
| US20180198624A1 | 2018-07-12 |
Attorney, Agent or Firm:
LEADER PATENT & TRADEMARK FIRM (CN)
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