Theta Fuel (TFUEL) is one of the two native tokens on the Theta blockchain. TFUEL is the second token on the Theta blockchain that serves as the utility token in decentralized video and data delivery, it also acts as a gas token. It is used to power all operations on the Theta blockchain, like payments to relayers for sharing a video stream, for deploying and interacting with smart contracts, and as fees associated with transacting NTFs and DeFi applications.