Video copyright protection method and system based on block chain and digital watermarking technology

The invention discloses a video copyright protection method and system based on a block chain and digital watermarking technology, and the method comprises the following steps: storing a robust watermark uploaded by a user into a system database, and obtaining a watermark hash value through a hash algorithm; uploading a ciphertext generated by encrypting the watermark hash value and the user ID of the login user to a block chain and generating a block; and generating a fragile watermark according to the uploaded robust watermark, and respectively embedding the robust watermark and the fragile watermark into the video file to be registered. According to the method, a new copyright protection template is formed in a mode of combining the block chain and the digital watermark technology, the relevance between the watermark and a work owner is stronger, and the traceability is better. And a dual-watermark technology of robust watermarking and fragile watermarking is also adopted, so that confirmation of copyright