Sam Bankman-Fried, the disgraced founder of the now-collapsed cryptocurrency exchange FTX, was sentenced to 25 years in federal prison on Thursday for orchestrating a massive fraud that led to billions in customer losses.U.S. District Judge Lewis Kaplan handed down the sentence in a packed Manhattan courtroom, calling Bankman-Fried's crimes "extraordinarily serious." Prosecutors had sought a sentence of 40-50 years, while defense lawyers argued for no more than 6.5 years.In a meandering statement before the court, the 32-year-old Bankman-Fried apologized for his actions, saying the collapse of FTX "haunts me every day." He admitted to making "a series of bad decisions" as CEO that ultimately led to the company's downfall in November 2022."Customers don't deserve any of that pain," Bankman-Fried said. "It's been excruciating to watch."Once a rising star in the crypto world with an estimated net worth of $26 billion, Bankman-Fried's empire came crashing down after revelations that he used billions in customer funds to prop up his Alameda Research trading firm. In December, he was arrested in the Bahamas and extradited to the U.S. to face fraud charges.After a four-week trial last fall, a jury found Bankman-Fried guilty on seven criminal counts, including wire fraud and conspiracy to commit money laundering. Prosecutors said he misled investors and looted customer deposits to fund a lavish lifestyle and make risky bets through Alameda.Two of Bankman-Fried's closest associates, Caroline Ellison and Gary Wang, pleaded guilty and cooperated with prosecutors in the case against him. In his statement Thursday, Bankman-Fried commended his former colleagues, saying together they had "built something beautiful" before he "threw it all away."The 25-year sentence, while less than prosecutors sought, likely marks the end of Bankman-Fried's once-promising career. Speaking in court, he seemed to acknowledge as much, saying: "My useful life is probably over. It's been over for a while now."The case is seen as a major test of the federal government's ability to police the freewheeling crypto industry. The stunning collapse of FTX, which was valued at $32 billion at its peak, sent shockwaves through the sector and led to calls for tighter regulation.In addition to the prison term, Bankman-Fried was ordered to forfeit assets obtained through his illegal conduct. Authorities have already seized over $700 million worth of cash and assets tied to FTX and Alameda, including Bankman-Fried's stake in the trading app Robinhood.While some FTX customers may eventually recoup a portion of their losses through bankruptcy proceedings and asset forfeitures, the full extent of the financial damage may never be known. The case stands as a cautionary tale about the risks of the nascent crypto space, which remains largely unregulated