Circle Review: USDC, Security and Stablecoin Infrastructure

Circle is the financial technology company behind USDC and EURC, two stablecoins designed to maintain a 1:1 value with the U.S. dollar and euro, respectively. Circle backs its stablecoins with reserves that include cash and short-term U.S. Treasuries, with much of USDC’s reserves held through the BlackRock-managed Circle Reserve Fund.

Transparency is a major part of Circle’s business model. Its reserves undergo monthly third-party examinations by Deloitte, with public attestations providing information about the assets supporting USDC in circulation.

Unlike a traditional crypto exchange or brokerage, Circle primarily targets businesses and institutions. Circle Mint allows eligible fintech companies, banks, exchanges, payment processors, custodians and investment firms to mint and redeem USDC and EURC at scale. Opening an account requires a Know Your Business (KYB) process, with documentation requirements varying by company type and jurisdiction.

Circle also operates an expanding stablecoin infrastructure ecosystem. Its products include Cross-Chain Transfer Protocol (CCTP), programmable wallets and the Circle Payment Network, while the company is developing Arc, a Layer 1 blockchain designed around stablecoin-based financial activity.

Regulatory compliance is another central feature. Circle operates under licenses and registrations in multiple markets, including the United States and European Union. The company also became publicly traded on the New York Stock Exchange in June 2025.

Circle’s track record has not been entirely risk-free. In March 2023, USDC temporarily lost its dollar peg after Circle disclosed that $3.3 billion of its reserves were held at failed Silicon Valley Bank. USDC subsequently recovered its peg, and Circle adopted a more diversified reserve approach.

Overall, Circle is primarily suited to fintech firms, financial institutions and developers seeking regulated stablecoin infrastructure rather than everyday retail crypto traders. Its combination of USDC issuance, multichain support, reserve transparency and payments infrastructure makes it a significant provider in the stablecoin market, although institutional onboarding requirements may make Circle Mint less practical for smaller or low-volume businesses.