XFUEL™ is claimed to be the development token and the first token on the XTRABYTES™ blockchain. It serves as a means to fund XTRABYTES™, encourage project participation, and demonstrate the PoSign consensus algorithm by running on a lite version of PoSign that doesn't require miners to secure the chain. XFUEL™ also acts as a monetary incentive, allowing the project to compensate participants for their time and efforts. Without XFUEL™, starting and building the XTRABYTES™ project would have been impossible, as there was no ICO funding available to reward project contributors. Development would have been limited in scope.

In contrast, XBY is the native currency and protocol coin for the XTRABYTES™ platform. XBY has already been fully distributed and cannot be mined or staked. Like any other cryptocurrency, XBY can be used for purchasing goods and services. Additionally, XBY is required to secure STATIC nodes on the XTRABYTES™ network. The total supply of XBY is 650 million, and its circulating supply is dynamic, consisting of the XBY coins not locked into STATIC nodes.