N.C. Gen. Stat. § 47-91
In all cases where the acknowledgment, privy examination of a married woman, or other proof of the execution of any deed, mortgage or other instrument authorized or required to be registered has been taken before any consular agent of the United States, during the time Chapter 35 of Battle's Revisal remained in force and effect, and such acknowledgment, privy examination, or other proof of the execution of such deed, mortgage, or other instrument is in other respects regular and in proper form, and such deed, mortgage, or other instrument has been duly ordered to registration and registered in the proper county, the acknowledgment, probate, and registration of any and every such deed, mortgage, or other instrument is hereby validated as fully and to the same effect as though such acknowledgment, privy examination, or other proof of execution had been taken before one of the officers named in subsection five of section two of said Chapter 35 of Battle's Revisal.
N.C. Gen. Stat. § 47-91