N.H. Rev. Stat. Ann. § 506:2-a

No action shall be maintained against any person who may have been discharged as a bankrupt under the laws of the United States, or under the laws of this state pertaining to insolvency proceedings or assignments for the benefit of creditors, upon any promise to pay any debt or demand from which he was or shall be released by such discharge, unless such promise is made after such discharge, and is in writing and signed by the party to be charged therewith.