Stablecoins: USDT, USDC, DAI — Which to Choose for Exchange

Why Stablecoins Matter in Exchange

A stablecoin maintains a fixed price pegged to the US dollar. They serve as convenient intermediaries in exchanges: BTC → USDT → fiat is faster and cheaper than direct BTC → fiat conversion.

Comparison: USDT vs USDC vs DAI

Key differences: USDT leads with ~$120B market cap, accepts TRC-20 ($0.5–2 fees), partial reserve audits, medium regulatory risk. USDC has ~$45B cap, monthly audits of 100% USD reserves, no TRC-20 but low regulatory risk. DAI has ~$5B cap, fully on-chain crypto-collateralized, maximum decentralization but limited exchange support and no TRC-20.

Practical Recommendations

• Fast exchange and fiat conversion → USDT TRC-20
• Corporate settlements with Western partners → USDC
• DeFi protocol storage → DAI or USDC
• Default choice → USDT: maximum liquidity and exchange support