Whoever, when acting or purporting to act as a notary public or other public officer, certifies falsely that an instrument has been acknowledged or that any other act was performed by a party appearing before the actor or that as such notary public or other public officer the actor performed any other official act may be sentenced as follows:
(1) if the actor so certifies with intent to injure or defraud, to imprisonment for not more than three years or to payment of a fine of not more than $5,000, or both; or
(2) in any other case, to imprisonment for not more than 90 days or to payment of a fine of not more than $1,000, or both.