and such depository, or other person which itself qualifies as a depository as aforesaid, issues and the purchaser receives, a certificate, document of title, confirmation, or other instrument evidencing that such quantity of precious metals has been delivered to the depository and is being and will continue to be held by the depository on the purchaser's behalf, free and clear of all liens and encumbrances, other than liens of the purchaser, tax liens, liens agreed to by the purchaser, or liens of the depository for fees and expenses, which have previously been disclosed to the purchaser.
N.D.C.C. § 51-23-05