Distributed Electronic Data Storage and Proof System Based on Blockchain

In the context of the Internet, whether it is daily business or social networking, the penetration of electronic data is ubiquitous. Internet companies, financial institutions, government agencies and many other fields, more and more documents, notices, contracts, transaction vouchers, technology and trade secrets are stored in the form of electronic data. However, the existing traditional electronic data storage and proof systems are often encountered with third-party trust crisis and potential data security risks. To cope with these challenges, a distributed electronic data storage and proof system is designed, making use of the core features of the blockchain's decentralization and non-tampering to effectively solve the tampering and security problems of electronic data storage and proof. The system encodes and fragments information using Reed-Solomon code. And this system provides users with data uploading, downloading, querying, comparing and authorizing services. By using the system interaction, smart contracts are compiled to anchor key data information on the main chain, ensuring the non-tampering of electronic data. In the meantime, the access rights of different users to electronic data are restricted accordingly. Finally, based on an improved RFM model, the distributed storage nodes are determined to achieve load balancing of storage nodes. It also increases the high availability of the system.