Abstract: Systems and methods are disclosed for evaluating the veracity of online content, particularly in cases where the online content is signed/authenticated by one or more digital signatures associated with one or more users. Also disclosed are systems and methods for storing and retrieving authenticated content, and displaying authenticated content referencing other authenticated content.

Abstract: Systems and methods are disclosed for providing a chain of authenticated citations, from an original source document available online, through a chain of later documents and posts. Also disclosed are systems and methods of machine scoring of user posts based on metrics related to the expected veracity of cited sources, and the degree to which cited source material or verifiable online content may have been modified.

Abstract: Systems and methods are disclosed for providing a chain of authenticated citations, from an original source document available online, through a chain of later documents and posts. Also disclosed are systems and methods of machine scoring of user posts based on metrics related to the expected veracity of cited sources, and the degree to which cited source material or verifiable online content may have been modified.

Abstract: Systems and methods are disclosed for providing a chain of authenticated citations, from an original source document available online, through a chain of later documents and posts. Also disclosed are systems and methods of machine scoring of user posts based on memos related to the expected veracity of cited sources, and the degree to which cited source material or verifiable online content may have been modified.

Abstract: Systems and methods are disclosed for providing a chain of authenticated citations, from an original source document available online, through a chain of later documents and posts. Also disclosed are systems and methods of machine scoring of user posts based on memos related to the expected veracity of cited sources, and the degree to which cited source material or verifiable online content may have been modified.

Abstract: A server computer storing computer files, each computer file having an associated unique digital signature, receiving requests for access to one or more such computer files, only allows access to the or each computer file if their associated digital signatures are valid. Thus, if a computer file has been tampered with by an unauthorized third party, the digital signature associated with that computer file will prove to be invalid when checked and the server computer will not serve the computer file at all. In this way, a computer file that has been tampered with can never leave the server computer, much improving the security of the stored computer files.