North Carolina General Statutes Chapter 58. Insurance § 58-70-150. Complaint of a debt buyer plaintiff must be accompanied by certain materials

(1) A copy of the contract or other writing evidencing the original debt, which must contain a signature of the defendant. If a claim is based on credit card debt and no such signed writing evidencing the original debt ever existed, then copies of documents generated when the credit card was actually used must be attached.

(2) A copy of the assignment or other writing establishing that the plaintiff is the owner of the debt. If the debt has been assigned more than once, then each assignment or other writing evidencing transfer of ownership must be attached to establish an unbroken chain of ownership. Each assignment or other writing evidencing transfer of ownership must contain the original account number of the debt purchased and must clearly show the debtor's name associated with that account number.