$USDC It is a stablecoin that is traded against other cryptocurrencies or fiat currencies, such as the US dollar (USD). Its value is backed by US dollars in reserve, which gives it stability and reduces volatility. USDC is used in various decentralized finance (DeFi) applications to conduct fast and secure transactions. Some common pairs that include USDC are USDC/USD, USDC/BTC, and USDC/ETH.