$USDC USDC (USD Coin) is a fully backed stablecoin that is pegged 1:1 to the U.S. dollar, designed to offer the stability of fiat currency with the flexibility of digital assets. Issued by regulated financial institutions and backed by transparent reserves, USDC enables fast, secure, and low-cost transactions across blockchain networks. It is widely used for trading, payments, and decentralized finance (DeFi) applications, making it a trusted digital dollar in the world of crypto.