Abstract Poor privacy and low efficiency of cross-chain transactions are significant problems in the existing blockchain cross-chain schemes. A blockchain cross-chain transaction scheme based on atomic swap is proposed to solve these problems. The matching of cross-chain transactions is achieved by the cross-chain smart contract RCSC deployed on the relay chain. The RS algorithm is constructed by combining the ring signature algorithm with the sharding mechanism to realize the user information hiding. The off-chain storage of cross-chain transaction data is implemented through the IPFS, and the verification of transaction data is completed by SPV lightweight nodes. Experimental results demonstrate that the proposed scheme can effectively protect the anonymous information of both parties in the transaction. The efficiency of the signature and asset verification phase is significantly improved, and the performance of cross-chain transactions is also enhanced.
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Tian et al. (2024) studied this question.
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