This topic examines the relevant provisions on signature and loss reporting in the legal system of negotiable instruments. According to the regulations, if the drawer's signature on the bill does not meet the requirements, the bill is invalid, so the expression of option A is wrong: the drawer of the cashier's check uses the special seal for cashier's check approved by the People's Bank of China and the signature or seal of its legal representative or authorized agent on the bill, so the expression of option B is wrong; If the restriction of bill rights is interrupted, it is only valid for the party that restricts the interruption, so option C is wrong; Reporting the loss and stopping payment is not a necessary procedure to remedy the bill rights after the bill is lost, but a temporary preventive measure that the loser can take to prevent the bill from being fraudulently used or defrauded after the bill is lost. The owner can report the loss of the bill and stop payment after it is lost, and then apply for public notice or bring a lawsuit; You can also directly apply to the people's court for public notice or bring a lawsuit without reporting the loss and stopping payment, so the statement of option D is wrong.