Circle
Circle is the issuer behind USDC, one of the most important stablecoins on Ethereum and Ethereum L2s.
Category: Regulated stablecoin issuer
Products / brands: USDC, EURC, CCTP, Circle Payments
Circle is the issuer behind USDC, one of the most important stablecoins on Ethereum and Ethereum L2s. USDC is widely used for DeFi trading, onchain settlement, and institutional payment flows–often the “digital dollar” for Web3. DefiLlama lists USDC market cap at ~$61.57B, and Circle has emphasized reserve transparency as stablecoin regulation has matured. For Ethereum adoption, USDC’s footprint across Ethereum mainnet and L2s (Base, Arbitrum, Optimism, Polygon) makes it a major driver of daily user activity, tokenized finance, and TradFi-to-DeFi connectivity.
Key metric: USDC market cap ~ $61.57B (DefiLlama).
Sources: DefiLlama USDC: https://defillama.com/stablecoin/usdc