Research And Implementation Of Accounts Receivable Supply Chain Financial System Based On Blockchain

With the continuous expansion of the number and scale of small,medium-sized and micro enterprises in China,small,medium-sized and micro enterprises have gradually occupied the leading position in China’s market and made important contributions to maintaining social harmony and stability and rapid development of the national economy.In order to solve the huge financing needs of small,medium-sized and micro enterprises,supply chain finance has gradually developed.The traditional centralized supply chain financial system can not effectively solve the financing difficulties of small,medium-sized and micro enterprises due to the problems of information island,cumbersome financing business and data fraud.Using the characteristics of decentralization,non tampering and traceability of blockchain technology,it can well solve many pain points existing in the traditional centralized supply chain financial system,and provide an efficient and reliable solution for the development bottleneck of supply chain finance.At present,the blockchain supply chain financial system based on alliance chain architecture mainly uses PBFT(Practical Byzantine fault tolerance)consensus algorithm for consensus.However,with the increase of the number of nodes,PBFT consensus algorithm has the problem of rapid growth of communication times and consensus delay.In this paper,an improved dynamic grouping DHE-PBFT consensus algorithm is proposed.The consensus algorithm first reviews and scores the nodes,then randomly averages all nodes in the system,then uses the simplified PBFT consensus algorithm in the group,and finally uses the PBFT consensus algorithm to complete the consensus based on the global consensus results.The consensus algorithm proposed in this paper is compared with PBFT consensus algorithm.When a large number of nodes participate in the consensus,the consensus algorithm proposed in this paper has lower communication times and consensus delay.The current blockchain supply chain financial system has the problem of complex business processes.With the increase of the number of transactions,the stability and throughput of the system will decrease significantly.Taking the accounts receivable model in supply chain finance as an example,this paper uses Chain33 alliance chain technology to develop a supply chain financial system based on blockchain,and uses Chain33 main chain parallel chain architecture to realize the separate execution of consensus and transaction.This architecture effectively reduces the communication pressure of the main chain network and greatly improves the stability and throughput of the system.The system mainly realizes the functions of issuing financial and loan currency,financial and loan currency payment and applying for financing.Through the circulation of different tokens,it realizes the transactions between enterprises in the supply chain and simplifies the business process.Finally,the performance of the system implemented in this paper is tested.The test results show that the system implemented in this paper can complete the work efficiently and stably in a large number of real transaction application scenarios,and has high throughput.