$BTC BTC and USDT serve distinct roles in the crypto ecosystem, competing indirectly through their use cases. BTC, a decentralized cryptocurrency, aims for value appreciation and acts as a store of value or "digital gold," appealing to investors seeking long-term growth. Its volatility drives speculative trading, but limited supply (21 million coins) fuels scarcity-driven demand. Conversely, USDT, a stablecoin pegged to the U.S. dollar, prioritizes stability for transactions, trading pairs, and hedging against crypto volatility. Its market cap, over $144 billion, reflects its dominance in liquidity provision.