Abstract: Various embodiments of the present invention relate generally to authenticating copies of digital information and support systems and methods for providing this authentication. For example, a system is described that uses the content, timestamp of registration, and user-identifying information of a particular digital content to generate a registration that can be subsequently used to authenticate the content. In certain embodiments, this registration is published to further enhance the strength of authentication and protect from improper changes. For example, a registration may be integrated within a public block chain according to various procedures to authenticate various parameters including time/date of registration, sequence position, content and other parameters known to one of skill in the art.