To provide a payoff system of a public playing field with high reliability or transparency by providing a payoff management system independently of an operation server managed by the administrator of the playing field, and making the payoff management system deal with payoff.

The payoff management system is provided independently of the operation server managed by the administrator of the playing field. The payoff management system deals with payoff to provide a payoff system of a public playing field with high reliability or transparency. The payoff management server receives from an operation system the amount of digital money used (amount for purchase of betting tickets, payoff for winning tickets) along with a card number and manages the balance of the digital money for each card number. When the balance of digital money in the card does not equal the remaining points the digital money on the card is not paid out. This solves the problems with conventional techniques wherein because payoff and settlement is made using only digital money information, the playing field cannot be prevented from incurring loss if cards are forged or if the amount of money is manipulated; and wherein when payoff and settlement is made using only the information managed by the playing field, fraud on the part of the playing field cannot be checked even if fraud on the part of users can be checked.