FileMarket.xyz serves as an innovative Web3 platform for file-sharing and marketplaces, enabling users to tokenize, store, sell, and trade digital files as NFTs through its unique Encrypted FileToken (EFT) standard, which ensures full on-chain programmable access and tokenized paywalls. Leveraging the power of Filecoin (FVM/FEVM), IPFS, and multi-chain capabilities including ZkSync and Ethereum, it guarantees perpetual decentralized storage while prioritizing user privacy and ongoing access via smart contracts. Through the use of robust encryption, files are symmetrically stored on Filecoin with the help of Lighthouse, allowing creators to mint NFTs that represent the encrypted content and define access conditions. Buyers can allocate funds within a smart contract, provide their public key, and once the purchase is finalized, they receive an encrypted decryption key to download and unlock the file. A backend listener, along with a fraud-reporting mechanism, is implemented to confirm that only accurately decrypted files are finalized in a transaction, while ownership transitions activate secure exchanges of keys, enhancing the security of the entire process. This ensures a seamless experience for both creators and buyers, fostering trust and efficiency in every transaction.