Design And Implementation Of Blockchain Based Car-sharing Rental Trading Platform

In recent years,shared travel has gradually become popular,and Internet technology has also promoted the development of the transportation field.This article introduces blockchain technology to the shared travel field,which can effectively reduce the traffic carrying capacity and shorten the commuting time of users.The blockchain system is a decentralized distributed storage database,which has the characteristics of immutability,openness and transparency,trust and reliability,etc.,and has a wide range of applications in digital currency platforms.By adding zeroknowledge proof technology to the blockchain,the blockchain system can protect the user's transaction data and identity information.In addition,the blockchain system is also an underlying platform that can deploy and call smart contracts in the system to achieve certain specific needs.The original car rental platform has some problems:the user transaction process is expensive;the user's transaction information is not open and transparent;the car rental platform has absolute control over the transaction information,and it is easy to tamper with the data;the platform and the user are prone to trust issues.In view of the several technical characteristics of the blockchain,in order to solve the abovementioned practical pain points,this paper proposes a shared car time-sharing transaction platform based on the blockchain,which introduces the actual car rental scene into the blockchain system.All operations of the car rental users and car rental users are completed in the blockchain system,and the whole process becomes efficient and transparent.The realization process is based on the original blockchain system,adding zero-knowledge proof technology,which can ensure the correctness of relevant data in the transaction process without revealing the privacy of parameters.The innovations of this paper are as follows:(1)The original third-party car rental platform will charge a large amount of service fees during the transaction process.By introducing the blockchain system,the entire car rental process achieves the purpose of decentralized transaction.In the process of renting a car,transaction costs can be reduced,and all data is open and transparent.(2)Smart contract technology can ensure the correct division and verification of multi-party car rental fees to ensure fairness and justice;zero-knowledge proof technology is currently a relatively advanced method to protect data privacy,by integrating zero-knowledge proof technology into the blockchain system It can solve some key information that users want to be hidden during the transaction process,and can ensure that the user's transaction information is correct and not leaked.(3)By combining the existing car rental scenarios and blockchain technology,as well as the practical problems that need to be solved,a blockchain-based car time-sharing transaction platform is proposed,including the analysis of the needs of the transaction platform and the construction of the architecture design.,Carried out detailed design and system realization of different modules in the system,and finally carried out system test on different modules to ensure the integrity and effectiveness of the whole system.This platform can be divided into three functional modules:blockchain platform module,zero-knowledge proof module,and smart contract module.Embedding the zero-knowledge proof and smart contract into the blockchain system can ensure that the privacy of the account data of both parties during the transaction is not leaked,and the division and settlement of car rental fees can be completed correctly and efficiently.