A method for verifying a transacting entity includes: receiving a verification request including an entity identifier; transmitting a transaction amount; receiving a transaction message for a payment transaction including a controlled payment number, the transaction amount, and the entity identifier; transmitting at least two refund messages including the controlled payment number and a refund amount, where a total of the refund amount included in each refund message equals the transaction amount; receiving a verification message including the entity identifier and two or more return amounts; and verifying that the two or more return amounts correspond to the refund amounts included in the two or more refund messages.