10. a. The lender, or any purchaser, donee, successor, or other assignee of the lender's interest in the property, shall promptly notify the museum in writing of a change in the lender's address or of a change in the title to or interest in the property.
b. A purchaser, donee, successor, or other assignee of the lender's interest shall establish title to or interest in the property by producing reasonable proof satisfactory to the museum.