$USDC USD Coin (USDC) is a regulated stablecoin issued by Circle and fully backed 1:1 by U.S. dollar reserves. It offers stability in volatile crypto markets and is widely used in decentralized finance (DeFi), cross-border payments, and crypto trading. USDC is built on multiple blockchains, including Ethereum, Solana, and others, ensuring broad compatibility. Circle publishes monthly attestations by independent accounting firms to verify its reserves, enhancing transparency and trust. USDC is a key player in the evolving digital dollar economy.