Performance analysis and comparison of PoW,PoS and DAG based blockchains

作     者：Bin Cao Zhenghui Zhang Daquan Feng Shengli Zhang Lei Zhang Mugen Peng Yun Li Bin Cao;Zhenghui Zhang;Daquan Feng;Shengli Zhang;Lei Zhang;Mugen Peng;Yun Li

作者机构：The State Key Laboratory of Networking and Switching TechnologyBeijing University of Posts and TelecommunicationsBeijing100876China The State Key Laboratory of Integrated Services Networks(Xidian University)Xian710000China School of Communications and Information Engineering and Chongqing Key Lab of Mobile Communications TechnologyChongqing University of Posts and TelecommunicationsChongqing400065China The Guangdong Key Laboratory of Intelligent Information ProcessingCollege of Electronic and Information EngineeringShenzhen UniversityShenzhen518060China College of Information EngineeringShenzhen UniversityShenzhen518060China School of EngineeringUniversity of GlasgowGlasgowG128QQUK 

出 版 物：《Digital Communications and Networks》 (数字通信与网络（英文版）)

年 卷 期：2020年第6卷第4期

页      面：480-485页

核心收录：

学科分类：08[工学] 0835[工学-软件工程] 081202[工学-计算机软件与理论] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：the National Natural Science Foundation of China under Grant 61701059 Grant 61941114 and Grant 61831002 in part by the Fundamental Research Funds for the Central Universities of New TeachersProject in part by the Chongqing Technological Innovation and Application Development Projects under Grant cstc2019jscx-msxm1322 and in part by the Eighteentg Open Foundation of State Key Lab of Integrated Services Networks of Xidian University under Grant ISN20-05 

主　　题：Blockchain Proof of work Proof of stake Direct acyclic graph Performance comparison 

摘      要：In the blockchain,the consensus mechanism plays a key role in maintaining the security and legitimation of contents recorded in the *** blockchain consensus mechanisms have been ***,there is no technical analysis and comparison as a guideline to determine which type of consensus mechanism should be adopted in a specific scenario/*** this end,this work investigates three mainstream consensus mechanisms in the blockchain,namely,Proof of Work(PoW),Proof of Stake(PoS),and Direct Acyclic Graph(DAG),and identifies their performances in terms of the average time to generate a new block,the confirmation delay,the Transaction Per Second(TPS)and the confirmation failure *** results show that the consensus process is affected by both network resource(computation power/coin age,buffer size)and network load *** addition,it shows that PoW and PoS are more sensitive to the change of network resource while DAG is more sensitive to network load conditions.