Research And Implementation Of Warehouse Receipts Trading System Based On Blockchain

The essence of the warehouse receipt is a kind of securities.The trade of warehouse receipts facilitate the circulation of warehouse receipts,which is a very important part of the business of warehouse receipts.At present,warehouse receipt trading systems generally adopt a centralized service model and have the following problems: First,the data has the risk of being tampered,which reduces the credibility of the data;second,due to the low credibility of data,the confirmation of right is difficult.Even if the user actually owns warehouse receipts,it is hard to get approval from other agencies.Aiming at the problems of the existing warehouse receipt trading system,this thesis proposes a solution which to build warehouse receipt trading system based on the blockchain.Blockchain is an integrated innovation.Through multi-party maintenance and linked storage of data,it realizes the characteristics of multi-party credibility,difficulty in tampering and traceability.The warehouse order trading system based on blockchain construction has the following characteristics:Firstly,aiming at the performance problems encountered in the process of blockchain and business combination,the system architecture of “off-chain transaction and on-chain settlement” is designed based on the thought of off-chain expansion.So that the system can meet the requirement of performance without affecting the security features of the blockchain;Secondly,this thesis designs and realizes the offline storage and public verification functions of digital assets and related operational data based on spv technology design,and solves the problem of attribution and traceability of data.The main research and design contents of this thesis are as follows:(1)Studing and analyzing the principle and value of the blockchain technology,modifying the FISCO-BCOS alliance chain platform,and combining with the SPV technology of the public chain to make it support the acquisition and verification of data on-chain;(2)Based on the modified FISCO-BCOS platform,according to the design of “off-chain transaction,on-chain settlement”,the part with higher performance requirements such as maintenance of transaction market and achievement of transaction will be processed under the chain,and the settlement and management of digital assets are handled on the chain.In the design process of smart contracts,the problem of the smart contract's upgrading is solved by adopting the method of separating logic from data;(3)Based on the thought of “core organization maintenance data,user local storage of its own data,public supervision data”,with the help of the data credibility characteristics of blockchain,the offline storage and public verification of equity data are designed,and confirmation and traceability issues of warehouse receipts is solved.