R.I. Gen. Laws § 44-23-4 — Declarations under penalties of perjury

The oath or affirmation required by the provisions of this chapter as to any report
or written statement is not required if the report or statement to be sworn to contains
or is verified by a written declaration that it is made under the penalties of perjury;
and whoever signs or issues any report or statement containing or verified by a written
declaration is, if the report or statement is willfully false, guilty of perjury.