Abstract:Compared with traditional digital copyright protection technology, block chain has unique advantages because of its characteristics of decentralization, timestamp, distributed accounting, open system, smart contract and so on. Distributed bookkeeping and hashing algorithm can improve the transparency of digital copyright transaction information. Timestamp records can effectively prevent digital works from being pirated, decentralized and smart contracts can increase the revenue of digital creators. In the application of digital copyright protection, the future block chain technology should make breakthroughs in the unified standard of distributed accounts, the expansion of data storage space and the compatibility of national jurisdiction.