$USDC are cryptocurrencies designed to maintain a stable value, usually pegged to a fiat currency like the US dollar (e.g. USDT, USDC) or to other assets like gold or cryptocurrencies. Unlike Bitcoin or Ethereum, stablecoins are not subject to significant price fluctuations, making them ideal for payments, stores of value, and trading. There are different types: **collateralized** (backed by real reserves), **algorithmic** (regulated by smart contracts), and **hybrid**. They are essential for the DeFi ecosystem and the exchange between crypto and traditional currencies. However, they require transparency and trust in the guarantee mechanisms.