High Throughput Verifiable Query Method for Blockchain-oriented Off-chain Database
SUI Yuan1，WANG Wei2，3，DENG Xue2
1（Database and Massive Information Processing Laboratory,School of Software,Fudan University，Shanghai 200433，China）2（Database and Massive Information Processing Laboratory,School of Computer Science and Technology,Fudan University，Shanghai 200433，China）3（Fudan Innovation Research Institution of Zhuhai，Zhuhai 518057，China）
Abstract：In recent years，blockchain technology has received extensive attention.The application of blockchain has not only been limited to encrypting digital cash，but also has preliminary applications in traceability，finance，Internet of Things and other fields.Due to the limitation of consensus algorithm，the traditional structure block chain cannot effectively improve the transaction throughput of the network due to a large number of cryptographic computations.This paper proposes a verifiable query mode for the database Off-Chain oriented to the block chain.In this way，the tamper-proof characteristic of the blockchain is combined with the powerful insert，delete，modify and query ability of the Off-Chain database，while ensuring the efficiency and safety of the mode.Based on this mode，this paper proposes a multi-mode verifiable query method，which provides verification query methods with different costs according to the trust degree of each node.In the experiment part，we choose Hyperledger Fabric and HBase as examples of this mode.The experiment shows that this mode has better performance in system throughput and verifiable query.
2021, Vol. 42 
