Bitcoin has surged to as high as $73,500, only $300 below its all-time high set more than seven months ago. The world's largest cryptocurrency is now up nearly 75% year-to-date and has more than doubled since last year.Several positive catalysts for this increase have emerged, including the success of spot ETFs, monetary easing across major economies, and rising victory prospects for crypto-friendly presidential candidate Donald Trump.Currently, Bitcoin is trading at $73,000, representing a 4.6% rise over the past 24 hours.This surge marks a pivotal moment in Bitcoin's performance, as it approaches its historical peaks during U.S. trading hours.