Abstract: A computer-implemented method for evidencing the existence of a digital document has the steps of obtaining one or a plurality of time stamp(s) of the digital document, obtaining one or a plurality of cryptographic hash(es) of the digital document, generating one or a plurality of evidence key(s) based on the time stamp(s) and the cryptographic hash(es), and storing the evidence key(s) to provide one or a plurality of stored evidence key(s). A computer system for evidencing the existence of a digital document is also provided. A computer-implemented tag chain system is also described.

Abstract: A computer-implemented method for evidencing the existence of a digital document has the steps of obtaining one or a plurality of time stamp(s) of the digital document, obtaining one or a plurality of cryptographic hash(es) of the digital document, generating one or a plurality of evidence key(s) based on the time stamp(s) and the cryptographic hash(es), and storing the evidence key(s) to provide one or a plurality of stored evidence key(s). A computer system for evidencing the existence of a digital document is also provided. A computer-implemented tag chain system is also described.

Abstract: A system for information management includes a remotely accessible server configured for receiving a request from a user for a service provided by at least one designated service provider and for receiving a response from the at least one designated service provider; means controlled by the server for providing a first user interface that allows the user to download a preset template, to modify the template with user specific content, and to select the at least one designated service provider with a predetermined set of criteria; means controlled by the server for generating a virtual content module associated with the user that contains the modified template; means controlled by the server for transmitting a first notification message to the at least one designated service provider.