一种面向联盟链的链下数据可验证查询方法  

A method of off⁃chain data verifiable query for consortium blockchain

作　　者：孙一萌 范洪博[1] 彭慢煜 牛旭彤 庄金玉 SUN Yimeng;FAN Hongbo;PENG Manyu;NIU Xutong;ZHUANG Jinyu(Faculty of Information Engineering and Automation,Kunming University of Science and Technology,Kunming 650500,China)

机构地区：[1]昆明理工大学信息工程与自动化学院,云南昆明650500

出　　处：《现代电子技术》2023年第19期70-74,共5页Modern Electronics Technique

摘　　要：传统的区块链技术受到共识算法、区块在全网广播的速度等条件的限制,导致区块链的吞吐量性能无法和传统数据库性能相比。文中提出一种面向链下的数据可验证查询方法,将区块链上区块内数据存储在链下数据库中。采用Hyperledger Fabric作为区块链平台,使用Reids作为链下数据库存储区块数据,结合MPT树实现链下数据的查询可验证。通过实验验证了该方案可以实现区块链查询,性能接近数据库查询性能,并且保证了链下数据和链上数据的一致性,以及查询数据的可验证性。The traditional blockchain technology is limited to consensus algorithms and the speed at which blocks are broadcasted throughout the network,which results in a throughput performance that is inferior to traditional databases.Therefore,a method of off⁃chain data verifiable query is proposed,which stores the data in blocks on an off⁃chain database,rather than on the blockchain itself.The Hyperledger Fabric is taken as the blockchain platform and Redis as the off⁃chain database for the store of block data to implement off⁃chain data verifiable query by combining with MPT(Merkle Patricia Tree).Experiments has verified that the method can achieve the result that the blockchain query performance can be close to that of database,and can ensure the consistency between off⁃chain and on⁃chain data,and the verifiability of query data.

关 键 词：区块链 Merkle Patricia Tree 数据库 查询性能优化 吞吐量 数据可验证查询 

分 类 号：TN919-34[电子电信—通信与信息系统]