BCSE: Blockchain-based trusted service evaluation model over big data

The blockchain, with its key characteristics of decentralization, persistence, anonymity, and auditability, has become a solution to overcome the overdependence lack trust for traditional public infrastructure on third-party institutions. Because these characteristics, blockchain is suitable solving certain open problems in service-oriented social network, where unreliability submitted reviews service vendors can cause serious security problems. To solve reviews, this paper first proposes blockchain-based identity authentication scheme new trusted evaluation model by introducing into model. consists scheme, submission module, publicity module. In proposed model, only users who have successfully been authenticated submit vendors. registration records users' are all stored network. analysis shows that ensure credibility vendors, other obtain credible via review experimental results also show lower delay than models.