Abstract
The consortium chain is widely used in multi-organization collaboration and data sharing in various industries due to its decentralization, non-tampering, and traceability. With its popularity, supervising these distributed systems has become a challenge for governments. The centralized supervision model destroys the distributed nature of blockchains and cannot provide open and transparent supervision services. Therefore, researchers propose to build a blockchain to supervise multiple consortium chains in one industry. Under this idea, the cross-chain supervision scheme becomes the focus of research. However, most existing cross-chain schemes are designed for digital currency transfer. If applied to a supervision scenario, they suffer from two shortcomings. First, the over-coupled interchain relationship cannot meet flexible supervisory requirements. Second, they cannot guarantee data authenticity during off-chain transmission. Aiming at the shortcomings, we design SCOPE, a cross-chain supervision scheme for consortium chains. The contribution of our work lies in three aspects. Firstly, we deploy a relay chain to implement automatic supervision based on the publish-subscribe model, reducing cross-chain overhead. Secondly, we propose a verification method for the authenticity of cross-chain data by calculating the reputation value of oracle nodes and performing threshold signatures based on reputation weights. Finally, we implement a prototype system and test it. The results show that SCOPE provides good scalability and achieves low latency. Compared with the verification method based on BLS threshold signatures, SCOPE obtains a higher success rate in verifying the authenticity of cross-chain data.
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This work was supported by the National Key R &D Program of China (No.2020YFB1005500).
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Xu, Y., Wang, H., Zeng, J. (2023). SCOPE: A Cross-Chain Supervision Scheme for Consortium Blockchains. In: Wang, D., Yung, M., Liu, Z., Chen, X. (eds) Information and Communications Security. ICICS 2023. Lecture Notes in Computer Science, vol 14252. Springer, Singapore. https://doi.org/10.1007/978-981-99-7356-9_33
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DOI: https://doi.org/10.1007/978-981-99-7356-9_33
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