Research on Cross-chain Technology of Blockchain

With the continuous development and innovation of blockchain technology, a large number of blockchain networks with different characteristics and adapting to the needs of different scenarios have emerged in the fields of payment settlement, product traceability, identity authentication and so on, forming many islands of value. Blockchain cross-chain technology is an important technical means to realize inter-chain interconnection and value transfer. This paper systematically summarizes the current blockchain mainstream cross-chain technology. Firstly, this paper summarizes the basic knowledge of cross-chain technology, and then introduces the mainstream cross-chain techniques. Finally, this paper analyzes the challenges of cross-chain technology and forecasts its future prospect.