A system for registering a user with multiple websites, the system comprising: at least one processor configured to: a) receive a request to register the user; b) receive an IP address for a computing device being used by the user; c) after receiving the IP address: 1) obtain a location associated with the IP address; and 2) identify whether the user is in a jurisdiction that permits the user to register with a website; d) receive one or more parameters obtained from the user, the one or more parameters comprising characteristics of the user; e) after receiving the one or more parameters: 1) verify an age of the user based on at least one of the one or more parameters; 2) after verifying the age of the user, determine which of the one or more types of transaction activities the user is permitted to conduct on the multiple websites based on the age of the user; 3) query one or more registration attempts over a predetermined previous time period to identify duplicate or similar parameters associated with the one or more registration attempts as the one or more parameters obtained from the user; and 4) verify the user's identity based at least on one of the one or more parameters obtained from the user; f) after: 1) not identifying duplicate or similar parameters from e)3); and 2) verifying the user's identity from e)4), generate a unique user identifier associated with the user; and g) transmit the unique user identifier to the multiple websites. a) receive a request to register the user; b) receive an IP address for a computing device being used by the user; c) after receiving the IP address: 1) obtain a location associated with the IP address; and 2) identify whether the user is in a jurisdiction that permits the user to register with a website; 1) obtain a location associated with the IP address; and 2) identify whether the user is in a jurisdiction that permits the user to register with a website; d) receive one or more parameters obtained from the user, the one or more parameters comprising characteristics of the user; e) after receiving the one or more parameters: 1) verify an age of the user based on at least one of the one or more parameters; 2) after verifying the age of the user, determine which of the one or more types of transaction activities the user is permitted to conduct on the multiple websites based on the age of the user; 3) query one or more registration attempts over a predetermined previous time period to identify duplicate or similar parameters associated with the one or more registration attempts as the one or more parameters obtained from the user; and 4) verify the user's identity based at least on one of the one or more parameters obtained from the user; 1) verify an age of the user based on at least one of the one or more parameters; 2) after verifying the age of the user, determine which of the one or more types of transaction activities the user is permitted to conduct on the multiple websites based on the age of the user; 3) query one or more registration attempts over a predetermined previous time period to identify duplicate or similar parameters associated with the one or more registration attempts as the one or more parameters obtained from the user; and 4) verify the user's identity based at least on one of the one or more parameters obtained from the user; f) after: 1) not identifying duplicate or similar parameters from e)3); and 2) verifying the user's identity from e)4), generate a unique user identifier associated with the user; and 1) not identifying duplicate or similar parameters from e)3); and 2) verifying the user's identity from e)4), generate a unique user identifier associated with the user; and g) transmit the unique user identifier to the multiple websites.