FusionChain:基于以太坊的UTXO-Account混合区块链系统  

FusionChain:a UTXO-Account Hybrid Blockchain System Based on Ethereum

作　　者：马元一 周桐[2,3] 赵赫 王硕[1] 李京[1] MA Yuanyi;ZHOU Tong;ZHAO He;WANG Shuo;LI Jing(School of Computer Science,University of Science and Technology of China,Hefei 230026,China;Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,China;Anhui Zhongke Jingge Technologies Co.,Ltd.,Hefei 230088,China)

机构地区：[1]中国科学技术大学计算机科学与技术学院,合肥230026 [2]中国科学院合肥物质科学研究院,合肥230031 [3]安徽中科晶格技术有限公司,合肥230088

出　　处：《小型微型计算机系统》2025年第2期396-402,共7页Journal of Chinese Computer Systems

基　　金：国家重点研发计划项目(2021YFB2700800)资助。

摘　　要：区块链按照记账模型可分为账户模型和UTXO模型.账户模型由于智能合约串行导致吞吐量低下.尽管尝试对合约进行并行处理,也会由于合约模型本身存在的状态冲突问题,导致并行度有限.相对而言,UTXO模型凭借其无状态的特性,可以并行处理交易,然而UTXO模型的功能性相对较弱.本文基于以太坊区块链系统,尝试整合以上两种记账模型,通过扩展以太坊的账户、交易及智能合约的操作方法,建立UTXO-Account混合区块链系统FusionChain,充分利用两种模型的优点,同时避免它们的缺点.在此系统的基础上,提出了一种高效的代币交易实现方法.通过对以太坊历史数据的理论分析,本系统的区块内交易冲突率显著低于以太坊.同时与其它基于UTXO模型的代币交易实现方式相比,基于本系统构建的代币交易具有更高的性能.Blockchain can be classified into two ledger models:the account model and the UTXO model.The account model suffers from low throughput due to the serial execution of smart contracts.Although attempts have been made to parallelize the contracts,the inherent state conflict issue in the contract model limits the degree of parallelism.Conversely,the UTXO model,with its stateless nature,can handle transactions in parallel,but it has relatively limited functionality.This paper attempts to integrate these two ledger models based on the Ethereum blockchain system.By extending Ethereum′s accounts,transactions,and the operation methods of smart contracts,a UTXO-Account hybrid blockchain system,FusionChain,is established.This system fully exploits the advantages of both models while avoiding their drawbacks.On this basis,a highly efficient token transaction implementation is proposed.Theoretical analysis of Ethereum′s historical data shows that the intra-block transaction conflict rate of this system is significantly lower than that of Ethereum.Moreover,compared with other token transaction implementations based on the UTXO model,the token transactions built on this system exhibit superior performance.

关 键 词：区块链 以太坊 ERC20合约 UTXO 交易并行 混合系统 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]