N.C. Gen. Stat. § 47-80
In all cases where any deed concerning lands or any power of attorney for the conveyance of the same, or any other instrument required or allowed to be registered, has been, prior to the twenty-ninth day of January, 1901, acknowledged by the grantor therein, or proved and the private examination of any married woman, who was a party thereto, taken according to law, before any judge of a supreme, superior or circuit court of any other state or territory of the United States where the parties to such instrument resided, and the certificate of such judge as to such acknowledgment, probate or private examination, and also the certificate of the secretary of state of said state or territory instead of the Governor thereof (as required by the laws of this State then in force) that the judge, before whom the acknowledgment or probate and private examination were taken, was at the time of taking the same a judge as aforesaid, are attached to said deed, or other instrument, and the said deed or other instrument, having said certificates attached, has been exhibited before the former judge of probate, or the clerk of the superior court of the county in which the property is situated, and such acknowledgment, or probate and private examination have been adjudged by him to be sufficient and said deed or other instrument ordered to be registered and has been registered accordingly, such probate and registration shall be valid. Nothing herein contained affects the rights of third parties who are purchasers for value, without notice, from the grantor in such deed or other instrument.
N.C. Gen. Stat. § 47-80