Abstract: Methods and apparatus, including computer program products, for verifying a player's eligibility for participation in on-line gaming. A method for verifying a player's eligibility to participate in on-line gaming includes performing one or more verification checks for the player. The method includes, for each verification check, requesting data about the player from one or more data source providers. The method includes receiving the data from the one or more data source providers. The method includes, for each verification check, calculating a check score based on received data from the one or more data source providers. The method includes calculating a verification score that is based on the check scores.