This document compares the stablecoins USDT and USDC. USDT was the first stablecoin but has faced controversies over a lack of transparency in its reserves. USDC was introduced later and operates under strict regulatory oversight, with complete transparency about its dollar reserves backing each coin. The main distinction is that USDC provides more regulatory compliance and transparency, which builds trust, while USDT has a more established history and availability but has faced scrutiny over its reserves. Both stablecoins are widely used on exchanges and in DeFi applications. The best choice depends on an individual's priorities around transparency, compliance, or familiarity.