Blockchain technology leverages distributed ledgers and cryptographic techniques to offer novel solutions for data privacy and transaction security. Among various cross-chain solutions, the notary group-based model has been widely adopted for data exchange across various domains. However, the centralized architecture of traditional notary group models introduces inherent risks and remains susceptible to network fluctuations. To address the centralization issue in notary-based cross-chain technologies, this paper proposes a novel transaction protocol jointly designed by notaries. First, an improved PageRank algorithm is introduced to reduce centralization during notaries selection process. Then, a sub-secret segment table scheme is proposed to optimize the threshold signature algorithm, thereby enhancing the protocol’s robustness under network fluctuations while preserving decentralization. Experimental results show that with 50 participating notaries, the optimized node selection algorithm improves the overall balance of node reputation values by 47.3% compared to traditional approaches. Moreover, under a network packet loss rate of up to 70%, the optimized threshold signature algorithm achieves approximately three times the robustness of standard threshold signature schemes, with negligible additional time overhead and Gas costs. Overall, the proposed protocol significantly enhances decentralization and robustness of cross-chain transactions with minimal impact on transaction costs, demonstrating its practical feasibility.
[1] Morrison R, Mazey N C H L, Wingreen S C. The DAO controversy: the case for a new species of corporate governance? [J]. Frontiers in Blockchain, 2020, 3: 24-25.
[2] 田海博, 叶婉. 跨链数字资产风险管理策略及分析[J]. 计算机科学与探索, 2023, 17(9): 2219-2228. Tian H B, Ye W. Risk management policies and analysis of cross-chain digital assets [J]. Journal of Frontiers of Computer Science and Technology, 2023, 17(9): 2219-2228. (in Chinese)
[3] Poon J, Dryja T. The bitcoin lightning network: scalable off-chain instant payments [EB/OL]. [2024-12-31]. https://lightning.network/lightning-network-paper.pdf.
[4] Casey C M, Kartaltepe J S, Drakos N E, et al. COSMOS-Web: an overview of the JWST cosmic origins survey [J]. Astrophysical Journal, 2023, 954(1): 31.
[5] Abbas H, Caprolu M, Di Pietro R. Analysis of Polkadot: architecture, internals, and contradictions [C]//5th IEEE International Conference on Blockchain, 2022: 61-70.
[6] Zhu S, Chi C, Liu Y. A study on the challenges and solutions of blockchain interoperability [J]. China Communications, 2023, 20(6): 148-165.
[7] Zabka P, Foerster K T, Schmid S, et al. Empirical evaluation of nodes and channels of the lightning network [J]. Pervasive and Mobile Computing, 2022, 83: 101584.
[8] Yin L Y, Xu J, Tang Q. Sidechains with fast cross-chain transfers [J]. IEEE Transactions on Dependable and Secure Computing, 2022, 19(6): 3925-3940.
[9] Westerkamp M, Eberhardt J. zkRelay: facilitating sidechains using zkSNARK-based chainrelays [C]//5th IEEE European Symposium on Security and Privacy, 2020: 378-386.
[10] Wpillai B, Biswas K, Hóu Z, et al. The burn-to-claim cross-blockchain asset transfer protocol [C]//25th International Conference on Engineering of Complex Computer Systems (ICECCS), 2020: 119-124.
[11] Manevich Y, Akavia A. Cross chain atomic swaps in the absence of time via attribute verifiable timed commitments [C]//7th IEEE European Symposium on Security and Privacy, 2022: 606-625.
[12] Malavolta G, Moreno-Sanchez P, Kate A, et al. Concurrency and privacy with paymentchannel networks [C]//24th ACM-SIGSAC Conference on Computer and Communications Security, 2017: 455-471.
[13] Nadahalli T, Khabbazian M, Wattenhofer R. Grief-free atomic swaps [C]//4th IEEE International Conference on Blockchain and Cryptocurrency, 2022: 1-9.
[14] 康博涵, 章宁, 朱建明. 基于区块链的智能服务交易跨链服务框架与通信机制[J]. 网络与信息安全学报, 2021, 7(3): 105-114. Kang B H, Zhang N, Zhu J M. Research on inter-blockchain service framework and communication mechanism based on smart service transaction [J]. Chinese Journal of Network and Information Security, 2021, 7(3): 105-114. (in Chinese)
[15] Zhang S B, Xie T X, Gai K K, et al. ARC: an asynchronous consensus and relay chain-based cross-chain solution to consortium blockchain [J]//9th IEEE International Conference on Cyber Security and Cloud Computing/8th IEEE International Conference on Edge Computing and Scalable Cloud, 2022: 86-92.
[16] Tian H Y, Xue K P, Luo X Y, et al. Enabling cross-chain transactions: a decentralized cryptocurrency exchange protocol [J]. IEEE Transactions on Information Forensics and Security, 2021, 16: 3928-3941.
[17] Lin S F, Kong Y H, Nie S T. Overview of block chain cross chain technology [C]//13th International Conference on Measuring Technology and Mechatronics Automation, 2021: 357- 360.
[18] Xiong A P, Liu G H, Zhu Q Y, et al. A notary group-based cross-chain mechanism [J]. Digital Communications and Networks, 2022, 8(6): 1059-1067.
[19] Cao L F, Zhao S C, Gao Z S, et al. Cross-chain data traceability mechanism for cross-domain access [J]. The Journal of Supercomputing, 2023, 79(5): 4944-4961.
[20] Hejazi-Sepehr S, Kitsis R, Sharif A. Transwarp conduit: interoperable blockchain application framework [DB/OL]. (2019-06-07) [2024-12-31]. https://arxiv.org/abs/1906.03256.
[21] 闫树, 吕艾临. 隐私计算发展综述[J]. 信息通信技术与政策, 2021, 47(6): 1-11. Yan S, Lyu A L. Overview of the development of privacy preserving computing [J]. Information and Communications Technology and Policy, 2021, 47(6): 1-11. (in Chinese)
[22] Wu Z H, Xiao Y, Zhou E Y, et al. A solution to data accessibility across heterogeneous blockchains [C]//26th IEEE International Conference on Parallel and Distributed Systems, 2020: 414-421.
[23] Zamyatin A, Harz, D, Lind J, et al. XCLAIM: trustless, interoperable, cryptocurrency-backed assets [C]//40th IEEE Symposium on Security and Privacy, 2019: 193-210.
[24] 蒋楚钰, 方李西, 朱建明. 基于PageRank改进的公证人节点信用排序算法[J]. 信息安全研究, 2022, 8(1): 9-18. Jiang C Y, Fang L X, Zhu J M. A credit ranking method of notary mechanism based on improved PageRank algorithm [J]. Journal of Information Security Research, 2022, 8(1): 9-18. (in Chinese)
[25] Chen L F, Yao Z H, Si X M, et al. Three-stage cross-chain protocol based on notary group [J]. Electronics, 2023, 12(13): 2804.
[26] Hei Y M, Li D W, Zhang C, et al. Practical AgentChain: a compatible cross-chain exchange system [J]. Future Generation Computer Systems, 2022, 130: 207-218.
