FIO Protocol (FIO) serves as a decentralized, open-source solution geared towards enhancing the usability of cryptocurrency transactions across all blockchains. It achieves this by replacing intricate wallet addresses with a single, customizable, and human-readable Crypto Handle in the format of username@domain. With FIO Crypto Handles, users can seamlessly execute various cryptocurrency transactions, including sending, receiving, requesting, and signing, akin to sending an email. The primary objective of FIO Protocol is to simplify the utilization of cryptocurrency across diverse tokens and coins by mitigating the risk of human error associated with lengthy wallet addresses on different blockchains and network types. FIO seamlessly integrates into various decentralized applications and boasts a growing partner ecosystem comprising over 75 wallets, exchanges, marketplaces, payment processors, and gaming platforms. This ecosystem includes its proprietary application, FIO Dashboard, further enhancing accessibility and usability for cryptocurrency users.