A method and device for credible acquisition and storage of off-chain data
An external data and data technology, applied in the blockchain field, can solve the problems of off-chain data acquisition security and poor credibility, and achieve the effect of solving non-repudiation and data credibility problems and ensuring integrity
Active Publication Date: 2022-06-17
杭州链城数字科技有限公司
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[0003] The purpose of the embodiment of this application is to provide a method and device for credible acquisition and storage of out-of-chain data to solve the problem of poor security and credibility of out-of-chain data acquisition, thereby improving the efficiency of out-of-chain data access
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[0038] Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. When the following description refers to the drawings, the same numerals in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the illustrative examples below are not intended to represent all implementations consistent with this application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as recited in the appended claims.
[0039] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to limit the application. As used in this application and the appended claims, the singular forms "a," "the," and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It will also be understood that the term "and / or" as...
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This application discloses a method and device for credible acquisition and storage of off-chain data, including: receiving a request Req, the request Req is composed of a request for querying off-chain data and a request for depositing a certificate; according to the request for querying off-chain data, Use the off-chain data access contract to initiate a call service to the external data source; according to the unique identifier of the query off-chain data request, check whether there is a request Req that has not been returned, and if it exists, continue to process the query off-chain data request, if does not exist, then receive the external data Res returned by the external data source; combine the request Req, the external data Res and network interaction data to generate an electronic data file; calculate the hash value of the electronic data file; certificate request, call the certificate deposit contract, and upload the hash value of the electronic data file to the chain. The invention solves the problem of low reliability and poor credibility of out-of-chain data acquisition, and realizes the ability to acquire reliable data in an unreliable network system environment.
Description
technical field [0001] The present application relates to the technical field of blockchain, and in particular, to a method and device for trusted acquisition and storage of off-chain data. Background technique [0002] For the security and trustworthiness of data access outside the chain, the usual guarantee method is the centralized access control method endorsed by authoritative organizations, that is, the government or enterprise provides the data access interface, and the notary office endorses the authenticity of the data. Low efficiency, complicated procedures and high cost, poor security and reliability. SUMMARY OF THE INVENTION [0003] The purpose of the embodiments of the present application is to provide a method and device for trusted acquisition and storage of off-chain data, so as to solve the problem of poor security and reliability of off-chain data acquisition, thereby improving the efficiency of off-chain data access. [0004] According to the first asp...
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IPC IPC(8): G06F16/27G06F16/2458G06F21/64
CPCG06F16/27G06F16/2471G06F21/64
Inventor 尹可挺方雯璟汤泉张德辉马振军
Owner 杭州链城数字科技有限公司