Are the cards we receive in January proof of payment of taxes?

Each January you receive a card from the Tax Assessor, intended to inform you of your PROPERTY VALUE, in case you wish to file an appeal of your value. The amount of your prior year’s taxes has been printed on the card, but it merely indicates the amount of taxes that would be due on that value. Even someone who has been delinquent in their taxes all year will receive a card with the full amount of taxes listed on it. The card is NOT proof of paid taxes. It is NOT mailed for that purpose.