The invention discloses a block chain-based electronic copyright protection method, which utilizes a brand-new, decentralized, distributed architecture called block chain and gradually emerging with digital encrypted currencies such as bitcoins. Electronic copyright protection for data calculation methods. The blockchain model usually includes a data layer, a network layer, a consensus layer, etc., which are respectively responsible for completing the tasks of time-stamped data encapsulation, distributed networking propagation mechanism, and consensus algorithm of distributed nodes. At the same time, the application of elliptic curve encryption (ECC), an asymmetric encryption algorithm in the blockchain, requires the use of two different public and private key ciphers for encryption and decryption, which can greatly enhance the security of the copyright database sex. The complete model architecture of the block chain of the present invention makes it have very broad application prospects in the field of electronic copyright protection.