计算机工程2024，Vol.50Issue(10)：61-68,8.DOI:10.19678/j.issn.1000-3428.0068644
基于DeFi消息传递机制的跨链交易关联方法
Cross-chain Transaction Association Method Based on DeFi Message-passing Mechanism
摘要
Abstract
As a new type of foundational blockchain service,cross-chain bridges realize the circulation of assets and data between blockchains,significantly advancing the development of Decentralized Finance(DeFi).However,in practical applications,the opacity of cross-chain bridge transactions and the difficulty in tracking assets have led many criminals to exploit cross-chain technology for money laundering,transferring illegal assets between chains.As a result,cross-chain transaction tracking has become a focal point for academic circles and regulatory authorities.Existing methods primarily use heuristic algorithms for rule matching to associate cross-chain transactions.While effective for matching transactions between specific blockchains,these methods are primarily designed for Centralized Finance(CeFi)cross-chain bridge services and rely heavily on centralized internal Application Programming Interfaces(API),limiting their ability to broadly support multiple cross-chain bridges for transaction association.To address these limitations,this study proposes a transaction association method tailored for DeFi cross-chain bridges services.The method obtains the deposit event log from the source chain based on the cross-chain bridge messaging mechanism and extracts key cross-chain information using expert rules.A target chain transaction search space was then constructed using data crawling technology.Cross-chain transactions were associated through the application of multiple business rules.The method was validated on real transaction datasets[with Ethereum as the source chain and Binance Smart Chain(BSC)as the target chain]from three cross-chain bridges:Celer cBridge,Multichain,and Poly Network.The accuracy rates were 93.6％,95.3％,and 91.6％,respectively,demonstrating high association accuracy.关键词
跨链交易关联/去中心化金融跨链桥服务/启发式算法/消息传递机制/交易追踪Key words
cross-chain transaction association/Decentralized Finance(DeFi)cross-chain bridge service/heuristic algorithm/message-passing mechanism/transaction tracking分类
信息技术与安全科学引用本文复制引用
林丹,郑梓烨,付齐双,吴嘉婧,郑子彬..基于DeFi消息传递机制的跨链交易关联方法[J].计算机工程,2024,50(10):61-68,8.基金项目
国家自然科学基金(62372485,61973325) （62372485,61973325）
广东省自然科学基金(2023A1515011314,2021A1515011661) （2023A1515011314,2021A1515011661）
广州市基础与应用基础研究项目(202102020616). （202102020616）
