$BTC Bitcoin (BTC) is the main foundation of crypto—stable, institutionally recognized, and leads every bull run. But altcoins (ALT) are big profit engines, especially when market rotations occur and Bitcoin dominance starts to decline. BTC usually rises first, then altcoins follow with potential gains of 5× to 100×, particularly in meme coins or micro alts. In 2025, a smart strategy is a combination: accumulate BTC for stability, and ALT for aggressive growth. BTC is suitable for hedging and long-term security, while ALT provides opportunities to be an early winner from the latest narratives. When BTC has already had a significant rally, retail money usually moves to ALT—this is where FOMO starts, and the biggest profits can be made. BTC for the foundation, ALT for the lift.