Electronic Data Depositing System Based On Blockchain Technology

In the context of the Internet,whether it is daily business or daily social networking,the penetration of electronic data is ubiquitous.In the Internet,financial institutions,government agencies and many other fields,more and more documents,notices,contracts,transaction vouchers,technology and trade secrets are kept in the form of electronic data.However,existing traditional electronic data storage systems often have problems such as third-party trust crisis and data security risks.In order to cope with this challenge,we designed a blockchain-based electronic data depositing system,which fully utilizes the decentralization and non-defective modification of blockchain,effectively solving the tampering of electronic data deposit.And security issues.The system provides users with data upload,download,query,comparison and authorization services.Using the system interaction function,the intelligent contract is written,and the key information of the data is anchored in the main chain to ensure that the electronic data cannot be falsified,and the access rights of different users to the electronic data are constrained.And introduced distributed storage technology and user integration mechanism to increase system reliability.The system utilizes the characteristics of decentralized and de-trusted blockchain technology to effectively solve the problem of electronic data being forged and destroyed.Utilizing Web3 j interactive function,smart contract can be compiled,and the key information after encapsulation can be anchored into structures on the parent blockchain to ensure that the electronic data cannot be tampered with.At the same time,considering that the blockchain will cause privacy leakage due to the transparent disclosure of information,an indexing idea is introduced into the contracting process to restrict different users' access to electronic data.The use of distributed storage fault-tolerance technology to complete the multi-point fragmented storage of electronic data,which ensure each node would safely storage data fragmentation with a small cost of redundancy.The system proposes a scheme for evaluating the performance of user nodes around the network and storage,which provides a reasonable basis for the selection of storage user nodes.Based on the RFM model,reward rules are formulated to increase the reliability of the system by attracting user nodes.In general,the system can protect the privacy of users while ensuring the authenticity,integrity,and uniqueness of electronic data.