The invention discloses a copyright
authorization method based on a block chain. The method comprises steps of: 1, uploading a work to a
client so as to enable the work to become a multi-level hash
value code identification document; 2, generating a self identity identifier in a copyright block chain
database; 3, enabling a digital copyright gateway
server to store the generated multi-level hash
value code identification document uploaded by an applicant in self identity into a copyright block chain
database; 4, enabling the applicant to fill in a copyright application agreement in detail through a digital copyright application website; 5, enabling the digital copyright application website
system to search the duplicate records of various levels of digital identification codes in the block chain
database, and to give a copyright
authorization conclusion; 6, determining the ownership of copyright according to the copyright
authorization conclusion, and sending to the applicant a copyright
authorization certificate or an electronic copyright
authorization certificate; and 7, enabling two copyright traders to apply for authorization and an authorization transaction at the digital copyright application website
system. The method solves the shortcomings of conventional copyright authorization and ensures the
high security and reliability of the copyright.