A method includes searching a data instance in a modular interactive document to identify completed digital signatures, validating the identified completed digital signatures, generating a signature information table that associates nodes of the data instance with signature information including an indicator of a digital signature status associated with each of the nodes, retrieving a page of the modular interactive document, retrieving data associated with the page and identifying nodes of data associated with user interface elements of the page, retrieving the digital signature status associated with the identified nodes of data associated with the user interface elements of the page from the signature information table, and presenting the page of the modular interactive document to the user on a display, the presented page including data corresponding to the identified nodes and an indication of the digital signature status associated with the data corresponding to the identified nodes.