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An intelligent transportation system (ITS) improves traffic safety and efficiency by enabling vehicles to generate and broadcast messages. However, it is not easy to trust the received message's credibility in an untrusted environment or untrusted network. Additionally, there is no reward mechanism for the honest message generator. Hence, to improve safety and network efficiency and encourage more vehicles to participate in network improvisation, we proposed a novel incentive mechanism for vehicles called SmartCoin based on a consortium blockchain. The proposed scheme aims to achieve social welfare, improved transportation, less traffic congestion, reduced road accidents, and a transportation network free from fraud messages. In the proposed scheme, vehicles give the rating to the message source vehicle based on the validity of the message. Some SmartCoins are credited into the vehicle's account at the …