A system and method of certifying a check which involves a captured image of the check. An example method includes receiving by a first computer a request from a second computer to certify a check from a payer to a payee, the check serving to withdraw funds from an account of the payer, receiving by the first computer an image file containing an image of the check from the second computer, obtaining an account number and an amount from the image file by the first computer, determining using the account number whether funds equal to the amount are in the account, and when funds equal to the amount are in the account, putting a hold on the funds equal to the amount and issuing a certification number and a password by the first computer.