Bitcoin is the most popular cryptocurrency in the world. However, it has lost its market dominance and may soon be overtaken by an altcoin. Its value is currently worth more than $3.6 trillion, which is equivalent to 20 percent of U.S. GDP this year. That figure is even more than the combined market capitalization of all altcoins combined. Even with this market cap, there are still plenty of questions surrounding Bitcoin's future.
Many experts believe that the future of Bitcoin is not clear. Some analysts believe that Ethereum will outpace Bitcoin in the next few years, while others argue that Bitcoin will remain the most popular and valuable currency. Ethereum's popularity has led to its current ranking as the second most valuable cryptocurrency by market cap. Its future is also still uncertain, as it is known to be prone to price volatility.