Blockchain-based verifiable computation with optimized resource allocation  

作　　者：Yang Ruizhe Tian tian Zhang Zheng Li Meng Zhang Yanhua 杨睿哲;Tian tian;Zhang Zheng;Li Meng;Zhang Yanhua(Faculty of Information Technology,Beijing University of Technology,Beijing 100124,P.R.China)

机构地区：[1]Faculty of Information Technology,Beijing University of Technology,Beijing 100124,P.R.China

出　　处：《High Technology Letters》2021年第2期139-145,共7页高技术通讯（英文版）

基　　金：Supported by the National Natural Science Foundation of China(No.61671029);Foundation of Beijing Municipal Commission of Education(No.KM202010005017);Doctoral Fund of Ministry of Education of China(No.2018M640032).

摘　　要：Nowadays,the data that users need to calculate and process increases sharply,however,ordinary users usually lack the required capability.Therefore,resorting to outsourcing computation,they can delegate computing tasks to high-performance nodes over the network to meet their needs.In order to ensure the correctness of outsourcing computations,a verifiable computing scheme based on the blockchain smart contract is proposed,where the primary node and the replica nodes complete the task calculation and verification respectively,and reach a final consensus on the results.Moreover,the computing resources and energy consumption of each node to make the consensus are analyzed,based on which an optimization of resources allocation is proposed to maximize the transaction throughput.The simulation results show the effectiveness of the proposed scheme built on distributed consensus and also the throughput improvement by optimizing.

关 键 词：blockchain verifiable computing practical Byzantine fault tolerance(PBFT) 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论]