Computer Science ›› 2020, Vol. 47 ›› Issue (6): 294-302.doi: 10.11896/jsjkx.191100055

• Information Security • Previous Articles     Next Articles

BitXHub:Side-relay Chain Based Heterogeneous Blockchain Interoperable Platform

YE Shao-jie1, WANG Xiao-yi2, XU Cai-chao2, SUN Jian-ling1   

  1. 1 College of Computer Science and Technology,Zhejiang University,Hangzhou 310027,China
    2 Hangzhou Qulian Technology Co.,Ltd.,Hangzhou 310051,China
  • Received:2019-10-07 Online:2020-06-15 Published:2020-06-10
  • About author:YE Shao-jie,born in 1995,Ph.D candidate,is a member of China Computer Federation.His main research interests include blockchain,distributed database and storage system.
    SUN Jian-ling,born in 1964,Ph.D,professor,Ph.D supervisor,is a senior member of China Computer Federation.His main research interests include database system,machine learning,financial technology and software engineering.

Abstract: In order to make the information between heterogeneous blockchains interact and realize the interoperability of blockchain,a general cross-chain message transfer protocol IBTP is proposed.Based on the protocol IBTP and side-relay chain strategy,this paper constructs a highly scalable,easily compatible,dynamically upgradeable,secure and highly available heterogeneous blockchain cross-chain system called BitXHub,which realizes heterogeneous asset exchange,information interoperability and service complementarity.BitXHub consists of three roles:relay chain,application chain and cross-chain gateway called Pier.It has three core technologies:universal cross-chain transmission protocol,heterogeneous transaction verification engine and multi-layer routing.It ensures the security and flexibility of cross-chain transactions.Compared to Polkadot and Cosmos,BitXHub provides a unified cross-chain contract template for homogeneous and heterogeneous application chains and relay chain contains a dynamically upgradeable verification engine,so it has good heterogeneous blockchain compatibility.Based on distributed hash table,cross-chain gateways form ad hoc network which let BitXHub achieve high scalability,and cross-chain gateways can forward cross-chain messages statelessly.It has been verified by experiments that BitXHub guarantees asynchronous distributed transactions between heterogeneous blockchains,achieving high throughput,low latency,high scalability,and low overhead.

Key words: Heterogeneous blockchain, Interoperability, Universal cross-chain protocol, Stateless, Scalability, Distributed transaction

CLC Number: 

  • TP391
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