Sinsull, you said,

In NYC I always had to show ID and sign the federal list which had a copy of my signature. Standard procedure.

I doubt very much that it was a "federal list". I don't think there is such a thing as a federal voter list, any more than there is a federal list of United States citizens. Even more doubtful than that, a "federal list" of citizens or voters with the address and specimen signatures.

What you signed would be a list generated under state law, by precinct or ward or whatever, under the state's voter registration procedures.

Dave Oesterreich