A Review of Cross-Blockchain Solutions

With the development of distributed ledgers, a variety of blockchain projects, with different characteristics, are emerging and working in a broad range of application scenarios. Cross-Blockchain Solutions are designed to solve the issue of interoperability between different blockchains that are usually impossible with existing protocols and standards, those solutions are growing massively which have different properties. However, it is difficult for technicians to weigh the pros and cons and choose the optimal solution. In this paper, to understand the available solutions thoroughly, the protocol mechanisms of three mature cross-blockchain solutions are discussed. Then, four innovative solutions and their new capabilities are introduced, the pros and cons of above solution are identified. Finally, available industrial solutions in the market are discussed.