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Calculation and selection scheme of node reputation values for notary mechanism in cross-chain

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Abstract

With the growing demand for blockchain data exchange and interoperability, the issue of data silos has become a significant hurdle limiting the widespread application of blockchain technology. As a result, blockchain cross-chain technology has emerged as a critical area of focus within the current blockchain research landscape. Among the various cross-chain mechanisms, the notary mechanism stands out due to its flexibility and widespread adoption. However, the selection of notaries, as a pivotal component of the notary mechanism, presently faces several challenges. These include inadequate calculation of node trust values and unequal distribution of benefits among nodes. Such issues directly undermine nodes’ enthusiasm for maintaining cross-chain value, subsequently impacting the efficiency and security of the cross-chain mechanism. To address these problems, this paper proposes a novel reputation value calculation and node selection model based on verifiable random numbers, an enhanced EigenTrust algorithm, and cumulative probability. Through analytical and simulation experiments, it is demonstrated that the proposed approach yields more reasonable node reputation values compared to other methods. Furthermore, by incorporating historical earnings and reputation values into the node selection process, the model ensures greater fairness and boosts node participation. These improvements ultimately enhance the operational efficiency and security of the cross-chain mechanism.

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All authors contributed to the conceptualization and design of the study. The design of the program, preparation of procedures, analysis, and experiments were carried out by Zhihao Guo. The first draft of the manuscript was written by Zhihao Guo, and all authors commented on previous versions of the manuscript. The final manuscript read and approved by all authors.

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Correspondence to Xiaoming Hu.

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Guo, Z., Hu, X. Calculation and selection scheme of node reputation values for notary mechanism in cross-chain. J Supercomput 80, 18177–18198 (2024). https://doi.org/10.1007/s11227-024-06152-3

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