Web 3 Dollar (USD3) is a blockchain-based cryptocurrency that aims to provide a stable and secure digital asset for online transactions. It is designed to operate on the Web 3.0 infrastructure, offering fast and low-cost transfers with high levels of transparency. USD3 is pegged to the value of the US dollar, making it less volatile compared to other cryptocurrencies. It can be used for various purposes, including online purchases, remittances, and investments.