Research And Design Of Will Security Deposit System Based On Blockchain Technology

With the improvement of the economic income of our citizens and increasingly serious situation of the aging population,more and more people choose to make wills and distribute their assets in accordance with their own wishes.At present,wills are often confronted with tampering and invalidation,and the probate cases are common as a result.In order to realize the encryption and preservation of the will files,authenticity verification of will files and change of ownership of will assets,this dissertation designs and implements will security deposit system based on blockchain technology.The main work of this dissertation is as follows:(1)A comprehensive use of Ethereum smart contracts,IPFS clustering and cryptography encryption technology to achieve a method of secure storage,extraction and verification of will files,which can store and guarantee the validity of will files.(2)Personal assets are represented in the form of on-chain assets.Users can identify assets such as account deposits,crypto-currencies,and intelligent automobiles on the blockchain,and write the willingness of allocating assets to the smart contract.Once the testator has passed away,the smart contract performs the assets transfer operation according to the established rules.(3)This dissertation designs a functional interaction module based on Ethereum smart contracts,which store the nodes information,will files attributes,will assets information and other related data.At the same time,it realizes the functions of nodes authority verification,access control of the consortium blockchain members,data extraction and other related functions through the interfaces provided by the smart contracts.(4)This dissertation implements the system based on MVC development framework combined with the interfaces to call blockchain services,and provides users with friendly system interaction interfaces.Through the browser interfaces,users perform registration and login,professional consultation,management of personal will files conveniently.In summary,the will security deposit system designed and implemented in this dissertation has good operability,and it can also guarantee the validity of the will files effectively and realize the transfer of personal will assets through the blockchain.The system may solve the problem that the currently falsified will files are difficult to monitor and collect evidence.It may provide some insight for the application of blockchain technology in the field of wills in the future.