Evolutionary game analysis on transaction of cloud manufacturing service platform based on blockchain

Abstract

To explore how the smart contract should be formulated by the cloud manufacturing service platform to further guarantee the transaction reliability of the platform under the blockchain technology, a game model was built for the transaction strategy of the supplier and the demander executing the smart contract in this platform, and the simulation experiment was carried out by MATLAB. The results showed that when the difference of reputation benefit, information benefit, performance bond reward and risk cost was greater than 0, and the difference of net benefit between no-change strategy and change strategy was greater than 0, both parties' strategies of executing the contract would evolve towards performance. At the same time, the amount of guarantee and reputation feedback had a positive effect on the choice of the performance strategy, and the risk coefficient had a negative effect. The higher the historical transaction quality, the greater the influence of other parameters on the evolution speed.