A Novel Cross-Chain Relay Method Based on Node Trust Evaluation

With the increasing complexity of blockchain network business requirements, there is a growing demand for interconnection mechanisms among different blockchains, leading to the emergence of cross-chain technology. This article discusses three mainstream cross-chain technologies: the notary mechanism, hash time lock, and side chain/relay mode, and highlights their limitations. In order to address issues such as low efficiency in relay chain reorganization and instability in cross-chain systems within the relay mode involving node turnover, this paper proposes a node trust-based cross-chain relay scheme. The scheme includes the construction of a trust model for blockchain nodes, the design of a weighted random election algorithm for relay nodes, and the development of a complete cross-chain transaction process. Simulation experiments are conducted to demonstrate the performance of the proposed scheme.