Codel's web verification and viewer allows authors to protect and control documents to ensure that those relying on them can verify that they are working with accurate data and the most recent version.  Authors flag the status of their Codelmarked content so that if the relying party verifies and out of date document, they are told that it is no longer valid and re-directed to more up-to-date content. You can download Codel's web application free here.

The following screen shots show some of the webap's features;