Before Snoop Dogg took the stage to DJ, some attendees pulled out their phones to look at an announcement posted by the president-elect on his social media network, Truth Social. He’d created his own cryptocurrency, called Trump. “Have fun!” he wrote, and the price was spiking. Some at the ball were angry they hadn’t gotten a chance to buy in early. Others suspected Trump had been hacked. “It’s not real,” one crypto founder said to a colleague.