A stablecoin is a promise, and the only question that matters is what stands behind it. USDC's answer is the most verifiable in the market: a reserve portfolio of cash and short-duration treasuries, largely held in a government money market fund, attested monthly by a major accounting firm, issued by a company whose financial statements are public.
What the March 2023 depeg actually showed
Circle held $3.3bn of reserves at Silicon Valley Bank when it failed on a Friday. With the banking system closed for the weekend and no confirmation that the deposit would be recovered, USDC traded down to around $0.87. The deposit was made whole on Monday and the peg restored. This was a liquidity event, not a solvency one — and it demonstrated that even fully backed stablecoins depend on the banking rails behind them.
Freezing and what it means
Circle can and does freeze addresses at the request of law enforcement. That capability is inseparable from the regulatory standing that makes USDC acceptable to institutions, and it means USDC is not censorship-resistant money. Users who need that property should hold something else and understand what they are giving up in reserve quality.
Regulatory position
MiCA-compliant in Europe, licensed across major jurisdictions, and structurally aligned with the emerging US stablecoin framework. Circle's public listing adds a layer of disclosure no private issuer matches.
Who should use it
Anyone who wants a dollar on-chain with verifiable backing. It is the default recommendation, with the caveat that reserves sit in banks and banks occasionally fail.