$USDC USDT (Tether) is the most widely used stablecoin in the world of cryptocurrencies, as it is pegged to the US dollar. Crypto pairs with USDT, such as BTC/USDT, ETH/USDT, or SOL/USDT, are ubiquitous on trading platforms. They allow traders to easily measure the value of cryptos in dollars and avoid volatility. Due to its stability, USDT often serves as a temporary refuge during sharp market downturns. It also facilitates arbitrage and quick transfers between platforms. USDT pairs are therefore essential to the liquidity and dynamics of crypto markets.