USD Coin (USDC) — Complete Guide

USDC is the second-largest stablecoin by market cap (~$40–60 billion) and the preferred regulated alternative to USDT for institutions, DeFi protocols, and US-based entities. Issued by Circle Internet Financial and originally co-founded with Coinbase under the Centre Consortium (dissolved 2023), USDC publishes monthly attestations by Deloitte. It is the native stablecoin of Base (Coinbase L2) and the reference currency for many institutional DeFi applications.

Circle holds 100% of USDC reserves in cash and short-duration US Treasury securities held in segregated accounts at US-regulated financial institutions, including BNY Mellon and BlackRock's Circle Reserve Fund. Users mint USDC by sending USD to Circle's banking partners through the Circle Account API or directly via Coinbase. USDC is burned when users redeem with Circle for USD, a process available to verified business accounts. The Cross-Chain Transfer Protocol (CCTP) allows native USDC minting/burning across supported chains without bridges, reducing bridge hack risk.

• +Monthly reserve attestations by Deloitte — highest transparency among fiat stablecoins
• +Native CCTP (Cross-Chain Transfer Protocol) eliminates bridge risk for cross-chain transfers
• +US-regulated issuer (Circle holds multiple money transmitter licenses)
• +Native stablecoin on Base, the fastest-growing Ethereum L2 by TVL growth
• +Preferred collateral for institutional DeFi, MakerDAO, and regulated lending desks
• +Blackrock and Fidelity custody relationships add institutional credibility

• !March 2023: briefly de-pegged to $0.87 when $3.3B of reserves were held at failed Silicon Valley Bank
• !Circle is a private company; regulatory action against Circle could impair USDC operations
• !Lower yield opportunities than USDT due to institutional bias toward capital preservation