A blockchain-based cross-chain data interaction method and a blockchain-based cross-chain data interaction system

Abstract

The invention provides a blockchain-based cross-chain data interaction method. The method comprises a node selection step, an initialization step and a cross-chain data transmission step; when a mainchain transmits cross-chain data to a side chain, an operation node performs main chain block synchronization processing on the main chain, and then performs main chain data synchronization processing on the main chain in a data signature mode; and when the side chain transmits cross-chain data to the main chain, the operation node performs side chain block synchronization processing on the sidechain, and then performs side chain data synchronization processing on the side chain by adopting a data signature mode. According to the cross-chain data interaction method based on the block chain,the multiple operation nodes are adopted, the situation that the consistency of cross-chain data is affected due to the fact that a single operation node has errors is avoided, data synchronization iscarried out on the premise that block synchronization is carried out, and the consistency of cross-chain data interaction is guaranteed. The invention also provides a method for realizing the cross-chain data interaction based on the block chain.

Description

technical field [0001] The invention relates to the technical field of block chains, in particular to a block chain-based cross-chain data interaction method and a cross-chain data interaction system. Background technique [0002] The interaction between blockchain chains is an important part of cross-chain design. Currently, the scalability design of blockchain mainly serves the single-chain transaction process. For the expansion of cross-chain transactions, most of them are based on the model of heterogeneous chains. In order to serve For heterogeneous chains, the scheme design is too complicated, and the efficiency cannot be guaranteed under the premise of ensuring functions. [0003] In the isomorphic chain environment, the side chain operation can be realized without additional economic pledge. Compared with the heterogeneous chain, the operation cost is lower, but most of the existing blockchain expansion solutions are not suitable for isomorphic chains. It is used in...

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Problems solved by technology

[0002] The interaction between blockchain chains is an important part of cross-chain design. Currently, the scalability design of blockchain mainly serves the single-chain transaction process. For the expansion of cross-chain transactions, most of them are based on the model of heterogeneous chains. In order to serve For heterogeneous chains, the scheme design is too complicated, and under the premise of ensuring the function, the efficiency cannot be guaranteed

[0003] In the isomorphic chain environment, the side chain operation can be realized without additional economic pledge. Compared with the heterogeneous chain, the operation cost is lower, but most of the existing blockchain expansion solutions are not suitable for isomorphic chains. It is used in the chain environment, and in the process of cross-chain data interaction between chains, the consistency of cross-chain data interaction cannot be guaranteed

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