Audio copyright protection and traceability system based on block chain

The invention relates to digital copyright management, in particular to audio copyright protection and traceability based on a block chain. The system specifically comprises an audio feature extraction algorithm, a database, a digital currency network, a block chain, a client query module, a client uploading module, a client audio feature extraction module, an audio copyright transaction and authorization module and a server, and is characterized in that the client audio feature extraction module facilitates feature extraction of audio by a creator; the client uploading module is convenient for an audio creator to upload the extracted audio features to the server, the client query module is convenient for a user to query and trace the audio copyright, and the transaction authorization module is used for processing the transaction and authorization of the audio. And the server is used for processing query, uploading, transaction and authorization requests of the client and is in communication connection with t