Cross-chain Supervision Mechanism of Distributed Notaries for Consortium Blockchain

Abstract

In recent years, consortium blockchain has played a significant role in fields such as logistics traceability and data transactions. However, due to the large differences in the underlying implementations of consortium blockchains, it is difficult to establish effective data sharing between different chains. Cross-chain technology is an important means to break the data isolation status of consortium blockchains, but the existing cross-chain technologies cannot meet the requirements of cross-chain supervision of consortium blockchain. There is no clear authority to divide cross-chain requests and inter-chain interoperability, and the contract calls between chains may lead to malicious tampering with ledger data during the cross-chain process, making them unsuitable for cross-chain supervision scenarios. In view of the above problems, this paper propose a cross-chain supervision mechanism of distributed notaries for consortium blockchain. The mechanism selects high-credit nodes from each consortium blockchain to serve as notaries and forms a notary chain as a medium for cross-chain sharing. By grading the identities of access chains, the security of cross-chain operations is ensured, the scalability of cross-chain is realized by modular design, and the communication message protocol designed for cross-chain supervision ensures the security of the supervision process. Finally, we compare and analyze our proposed solution with existing mechanisms and verify the practicability of the proposed scheme through simulation experiments.