Blockchain For Personal Credit Business Of Commercial Banks

In recently years,with the ceaseless development of the financial market,and with the rise of credit loans,internet finance and P2 P,the bank's business model is facing transformation.It is against this backdrop that the credit business scenario has become extremely complex.At this stage,the single banking technology makes it impossible for diversified business information to circulate in time.The transformation of the credit model has become a challenge for commercial banks.Blockchain technology is tamper proof and traceable,which can effectively solve the problem of data modification and deletion,and effectively solve the problem of pre-loan information asymmetry by using the peer-to-peer relationship of each node of the blockchain.Smart contract technology ensures that it is enforced under established conditions to realize the automatic flow of business process in loan.As the core of blockchain technology,consensus mechanism can effectively solve the performance problem of developing personal credit platform based on Ethereum.In view of the above problems,this thesis analyzes and studies from two aspects of technical optimization and performance optimization,and puts forward solutions.The main research is as follows:(1)From the aspect of technical optimization,this thesis analyzes the problems of asymmetric information before loan,slow process during loan and difficult supervision after loan in the whole life cycle process of traditional personal credit business,and designs a smart contract scheme based on Ethereum.Analyze the credit process from the perspective of function and business.In terms of function,a comprehensive platform is designed,including the whole life cycle of credit products.In the business logic,the design of smart contract can solve the problems of opaque pre loan data and slow approval process,so as to increase the credibility and transparency of the platform.(2)In terms of system performance,personal credit business involves transaction scenarios,which requires a certain timeliness.Ethereum Po W consensus mechanism has low timeliness and performance bottlenecks,and is not suitable for the actual production environment.Therefore,according to the requirements of this thesis,an improved PC raft algorithm is proposed as the consensus mechanism of blockchain,The leader election and log replication of raft algorithm are analyzed.The pre voting link is added in the leader election stage and the vote counting state is introduced.The role of Co-worker is designed to assist batch processing and pipeline processing in the log replication stage.Finally,a comparative experiment is carried out.The experiment shows that the improved PC-Raft algorithm is more suitable for the actual production environment.(3)Based on the above research,this thesis implements a blockchain platform for personal credit business of commercial banks,uses the improved PC-Raft algorithm as the consensus mechanism in Ethereum,deploys smart contracts as the promotion,builds private chain cluster nodes,uses truffle framework and Vue framework to realize the development of the overall platform,and gives key functional interfaces.Prove the feasibility of the scheme.