Sharing Economy Protocol with Privacy Preservation and Fairness Based on Blockchain

摘要

Blockchain, as the core technology of cryptocurrency, provides a novel idea for the sharing economy. A user pays the agreed money to the property owner without any trust third party in blockchain, which leads to the leakage of privacy due to openness of the blockchain. To alleviate the privacy concern, a protocol is proposed to not only protect privacy through breaking the link between the user and the property owner but also ensure the fairness among parties joined in transaction. In addition, double-spending and double-usage are detected and prevented by applying smart contract in the protocol. Compared with the existing related works, the proposed protocol is secure, effective and practical.