A Blockchain Based Documentation Sharing Framework for Copyright Protection

In the context of the information age, electronic documents have replaced traditional paper documents and become the most commonly used data carrier in work. Compared with traditional paper documents, the cost of electronic documents is lower, and it is convenient for the modification and transmission of information, which brings great convenience to the work of users. However, while electronic documents bring convenience to users, digital copyright infringements are ubiquitous because of their ease of duplication. To protect the user’s document security, this paper develops a decentralized electronic document sharing framework based on blockchain non-fungible token (NFT) technology. We have designed an on-chain and off-chain collaborative storage solution for off-chain storage of source files and on-chain storage proofs for file storage. By setting the challenge period and extracting file keyword groups for file duplication detection, the user's copyright is protected. And develop smart contracts based on solidity language, design access control mechanisms, realize copyright deposit certificates, copyright confirmation, copyright infringement detection, and document sharing.