A ledger of each Keeper's actions is recorded and converted into a reputation value. This represents the value of this Keeper to the users within the ecosystem. Good behavior, such as fill orders, is combined with bad behavior, such as failing to fill orders or cheating, to quantify a reputation. The higher a Keeper's reputation the more likely they are to be greenlit. This encourages Keepers to behave. Bad Keepers will be blacklisted.