RT info:eu-repo/semantics/article T1 Ethereum-based decentralized car rental system A1 Caballero Gil, Pino Teresa A1 Caballero Gil, Cándido A1 Molina Gil, Jezabel Miriam A1 García Moreno, Néstor K1 Blockchain K1 Smart contract K1 Cyber-physical system AB Blockchain is a pioneering technology that allows the creation of innovative information exchange ecosystems thanks to uniqueproperties, such as immutability, distribution and transparency. By combining this technology with the emergent internet of things (IoT), manyinnovative business models can be created. The main objective of thiswork is to present the design and an initial implementation of a decentralized rental system that takes advantage of smart contracts developed on a public blockchain, combined with the potential of the IoTand its intimate relationship with cyber-physical systems. The logic tobe implemented in the blockchain is applied in this paper by using theEthereum programming language, so that the developed application covers the entire car rental process offered in traditional web applications,but adding more autonomy, functionalities and ease of use for both lesseesand lessors. Following Ethereum application development guidelines, allbusiness logic is located in the smart contracts implemented in the network, where they can be used to control the car rental system. While thisis a work in progress, the results obtained in the first proof of concepthave been very promising. SN 1368-9894 YR 2022 FD 2022 LK http://riull.ull.es/xmlui/handle/915/35245 UL http://riull.ull.es/xmlui/handle/915/35245 LA en DS Repositorio institucional de la Universidad de La Laguna RD 17-may-2024