A Covenant Mark is a form of currency developed by the Y'saari that permits travel through the Voidgates. It was developed after the Second Cleax Invasion in order to control and regulate the traffic through the gates. The value of access to the Voidgate system to any civilization is so significant that Covenant Marks have become the only real currency in the Starmourn Sector.
This symbol is used to represent the Covenant Mark: