$USDC USDC (USD Coin) is a stablecoin pegged to the US dollar, meaning one USDC is designed to always be worth $1 USD. Issued by Circle, it's backed by reserves of cash and short-term US Treasury bonds, held in regulated financial institutions. This backing aims to provide stability and transparency, unlike more volatile cryptocurrencies. USDC facilitates fast, low-cost global transactions on various blockchain networks, making it a popular choice for payments, decentralized finance (DeFi), and as a safe haven during market fluctuations.