An efficient blockchain-based privacy preserving scheme for vehicular social networks

•An integrated privacy-preserving architecture is designed for VSNs. Three scenarios that vehicles request data are considered.•We propose two novel mechanisms to evaluate the reliability of message which are broadcasted by vehicles.•An efficient incentive-punishment mechanism is proposed based on game theory. Besides, blockchain technology and consensus mechanism are employed to protect vehicles’ credit information.•Pseudonym and tracking mechanism is proposed for VSNs.