区块链跨链技术发展及应用研究综述

区块链经过十多年的深入发展，已经形成了具有不同特性、适用于不同应用场景的区块链网络。由于区块链的孤立性以及链与链之间的高度异构化，因此区块链之间的数据流通、价值转移成为了阻碍区块链技术广泛落地应用的技术瓶颈。区块链的跨链技术是实现区块链互联互通、提升区块链互操作性与可扩展性的重要技术手段。针对区块链间跨链交互难的问题，文章对区块链的跨链技术的发展和应用进行研究，阐述了跨链的基础原理，介绍了现有的跨链核心技术，分析了跨链技术面临的技术难点，总结了跨链技术的安全性风险和实际应用，探讨了当前跨链技术面临的挑战和未来的发展方向。

The Research Summary of the Development and Application of Blockchain Cross-chain Technology

After more than a decade of in-depth development, blockchain has formed a blockchain network with different characteristics and suitable for different application scenarios. Due to the isolation of blockchain and the high degree of isomerization between chains, the data flow and value transfer between blockchains have become the technical bottlenecks that hinder the widespread application of blockchain technology. The cross-chain technology of blockchain is an important technical means to realize the interconnection of blockchain and improve the interoperability and extensibility of blockchain. In view of the difficulty of cross-chain interaction between blockchains,the development and application of blockchain cross-chain technology are studied. The basic principles of cross-chain are explained, and the technical difficulties faced by cross-chain technology are analyzed. The current situation is emphasized. Finally, we summarized some cross-chain core technologies about the security risks and practical applications, and discussed the current challenges and future development directions of cross-chain technology.