Research And Implementation Of Blockchain-Based Supply Chain Finance System

As the underlying technology of digital currency,blockchain has the characteristics of distributed storage,consensus transactions and automatic transaction execution.By using blockchain to realize decentralized supply chain finance system,a series of problems in supply chain finance system,such as isolated information,mutual distrust and performance risk,can be solved,which can bring supply chain finance a broader development prospect and application value.However,there are two key problems in practical application:(1)due to the open and sharing nature of blockchain,it's difficult to protect the privacy of transaction data;(2)since blockchain cannot guarantee the authenticity of information source,it's difficult to guarantee the consistency between on-chain data and off-chain data.To deal with the aforementioned problems,the paper first deeply analyzes the characteristics of blockchain and supply chain finance.Then,leveraging technologies like confidential transactions and theories like game theory,the paper designs a two-phased consensus scheme to process private transaction and an incentive mechanism for participation node in the application scenario of supply chain finance.The researches can contribute to solving problems about transaction privacy and data consistency,and thus provide underlying technical support for the decentralized supply chain finance system.The main contents of the paper include:(1)In order to solve the problems of sensitive data and privacy disclosure in the supply chain finance system,a two phased consensus private transaction processing scheme is designed.In particular,by analyzing the characteristics of supply chain finance transactions and blockchain transaction process,the transaction verification procedure is divided into off-chain consensus and all nodes'consensus to solve the contradiction between privacy and verifiability.As a result,sharing desensitized data in the system is realized,and the privacy and security of the system are effectively improved.Through analyzing the security and privacy of the processing scheme,it's proved that the scheme can satisfy the requirements of privacy protection.Besides,by implementing the test system and conducting comparative tests,it's indicated that the scheme has stronger transaction performance and higher consistency of execution results.(2)In order to solve the problem of data inconsistency between on-chain and off-chain due to the forged transactions,an incentive mechanism for participation node is designed.By adopting evolutionary game theory,the paper analyzes the strategy changes of auditing organization and participation nodes under different rewards and punishments.Then,the paper obtains the reward and punishment conditions that can encourage nodes to upload correct information,which promotes the consistency between on-chain data and off-chain data.Through extensive experiments,the effectiveness is proved and the results indicate that increasing reward and punishment can both accelerate the evolution of consistency between on-chain data and off-chain data.Compared with random incentive mechanism,the designed mechanism can encourage nodes to submit correct information more efficiently and promote the data consistency significantly.Based on the above studies,a series of key problems in the blockchain-based supply chain finance system in terms of submitting data and executing transactions can be solved,the application value of blockchain-based supply chain finance system can be enhanced,and the development of supply chain finance can be promoted.