$USDC USD Coin (USDC) is a widely used stablecoin pegged 1:1 to the U.S. dollar, designed to offer the stability of traditional currency with the flexibility of digital assets. Issued by Circle, a U.S.-based fintech company, USDC is fully backed by cash and short-term U.S. Treasury securities held in regulated financial institutions. Monthly attestations by independent accounting firms ensure transparency and trust in its reserves