USD Coin is a stablecoin pegged to the US dollar, built so that one USDC is redeemable for one US dollar. It is issued by Circle, a US-based company, and it is widely treated as the more transparency-focused alternative to Tether. Circle announced USDC on May 15, 2018, and it launched that September through Centre, a joint venture between Circle and the exchange Coinbase. In August 2023 the two firms wound down the Centre consortium and Circle took full control of the token. USDC began as an Ethereum ERC-20 token and now also runs on other networks, including Base and Polygon.
USDC does the same core job as any dollar stablecoin: it lets people hold and send dollars on a blockchain without going through a bank wire. Traders use it as the cash side of crypto trades, apps use it to settle payments, and holders move it between exchanges and wallets in minutes, at any hour, including weekends when banks are shut. Because it tracks the dollar, it does not carry the price swings of Bitcoin or Ether, so people often park value in it between trades rather than treating it as an investment. Payment companies have started using it for settlement too; Visa ran a pilot in 2023 to send USDC over the Solana network to payment firms Worldpay and Nuvei. The token's reach across several blockchains is part of why it has become a common settlement layer for crypto apps.
The peg rests on reserves and one-to-one redemption rather than any algorithm. Circle states that USDC can be redeemed for US dollars on a one-for-one basis, and that the majority of the reserve sits in the Circle Reserve Fund, an SEC-registered government money market fund that can hold short-dated US Treasuries, overnight US Treasury repurchase agreements, and cash. The fund's assets are custodied at The Bank of New York Mellon and managed by BlackRock. That structure, short-dated government paper and cash held at a large bank, is the main reason USDC is often described as a conservatively backed stablecoin.
For a reader, USDC is a dollar you can hold and move on a blockchain, backed by reserves a US company reports on rather than by a bank account in your name. Its appeal is the make-up of that backing and the regulatory posture around it. The token stays near a dollar, but it carries no FDIC deposit insurance and no direct claim on a bank.