Ethereum Wrapped Filecoin (EFIL) is an ERC-20 token that represents Filecoin (FIL) on the Ethereum blockchain, enabling its use within Ethereum's DeFi ecosystem. It was created by Gemini to provide more flexibility for FIL holders, allowing them to interact with decentralised protocols while maintaining a 1:1 peg with FIL tokens. EFIL is primarily used to trade, lend, and provide liquidity in DeFi, expanding the utility of Filecoin beyond its native network.