The site previously listed provides extensive information as well as other links concerning encryption of digital signatures. This site provides links to the Secretary of State homepages for the majority of states. UCC filing is provided for under the Secretary of State in every state through each states Revised Statutes Annotated. Recall, these state agencies and their associated legislature are the port of entry of the entire monologue. Anthony Stevens of the Corporations Division of the UCC at New Hampshire Secretary of State's office assured me during conversation that NH is in the process of transferring its filed forms to a database file.
Maine has a database through which interested parties can search through filed forms.
Maine also has a website. All of the necessary forms, fees and guides are listed and accessible. Obviously, if just a few more steps were taken filing and searching could be accomplished electronically. It may be that the other states that list their forms and fees on their websites are in the process of compiling their data electronically. These are private companies, however, and a fee is charged for these online services.