R.I. Gen. Laws § 34-23-4: Certificate of possession taken by mortgagee.

Whenever possession shall be taken in the presence of witnesses as provided in § 34-23-3, they shall give to the mortgagee, or other person taking possession under him or her, a certificate of the possession being taken; and the person delivering possession shall acknowledge the delivery have been voluntarily done before a justice of the peace or notary public in the town or city where the mortgaged estate lies, which certificate and acknowledgment shall be recorded in the records of land evidence in the town or city.