Intelligent contract conflict detection method based on directed acyclic graph

Abstract

The invention discloses an intelligent contract conflict detection method based on a directed acyclic graph. The method comprises the following steps: S1, enabling an endorsement node to extract a read-write set of transaction simulation execution results; s2, updating an intelligent contract conflict relation graph according to the read-write set, performing conflict detection, and generating a conflict relation mapping table of a directed acyclic graph; and S3, after transaction verification is completed and the transaction is added to the chain, updating the intelligent contract conflict relation graph and the conflict relation mapping table. The block chain intelligent contract conflict detection method provided by the invention has the beneficial effects that the smart contract in the transaction can be subjected to conflict detection in the endorsement stage, invalid transactions are judged in advance, and the invalid transactions are prevented from entering the sorting and verification stages. According to the invention, the directed acyclic graph is used for conflict detection of the smart contract, so that consumption of system resources can be greatly reduced, the transaction throughput rate of a block chain system can be effectively improved, and the system resource overhead can be reduced.

Description

Technical field[0001]The present invention belongs to the area of ​​the block chain, and specifically, the conflict detection method involving the block chain smart contract.Background technique[0002]The block chain is a multi-center, tamper-proof, represented distributed account. This account is maintained by allocal nodes in the network, and has multi-center, non-tampered, traceable source. The individual nodes in the distributed network maintains the copy of the respective accounts by performing transactions verified by consensus algorithms, and the account is stored in the form of blocks, and each block is connected by a hash value of the previous block.[0003]The earliest extensive range of block chain applications are the encrypted currency of Bitcoin, which is later derived by it, and the block chain is also entered into people's field of view. Tanfri is another category of encrypted currency, its biggest innovation point is to put forward the intelligent contract, deploy the ...

AI Technical Summary

Problems solved by technology

For example, on the basis of sequential execution architecture, execute smart contracts multiple times and compare the execution results of smart contracts to judge smart contract conflicts. Such solutions can solve the problem of conflict detection to a certain extent, but the consumption of system resources is still very high. Large, unable to provide an efficient and cost-effective smart contract conflict detection solution

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