The present disclosure is related to discounting a price of commodities to a consumer based on purchases made by the consumer with a financial card. A consumer registers with a reward program by providing information associated with a financial card to a reward program provider. The reward program provider may validate the financial card with a financial card provider (e.g., a card association), and, in response to a successful validation of the financial card, may receive, from the financial card provider, a token that may be used to identify purchases made by the consumer using the financial card, and the reward program provider may delete the financial information provided by the consumer during the registration process. The reward program provider may receive information that includes the token and indicates purchases made by the consumer and is used to determine rewards earned by the consumer.