What is a USD stablecoin and how does it maintain its $1 value?

A USD stablecoin is a cryptocurrency designed to maintain a value of $1 by being backed by real US dollars or equivalent assets held in reserve. Popular examples include USDC and USDT. When demand increases, more stablecoins are issued; when demand decreases, they're removed from circulation. This mechanism keeps the price stable around $1. The issuing company holds actual dollars in bank accounts matching the number of stablecoins in circulation. If a stablecoin loses its peg (trades below $1), it indicates potential problems with reserves or trust. Stablecoins are useful for trading crypto without converting to traditional currency, reducing volatility risk, and transferring value quickly across blockchains.

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