Venezuelans’ embrace of digital money is less a matter of choice than of necessity. Their own currency, the bolívar, is now about as valuable as Monopoly money, a casualty of mismanagement by Nicolás Maduro’s socialist government. Inflation is running above 4,000%, the largest currency note, the 50,000-bolívar bill, is equivalent to less than a dime, and a disastrous 15-year experiment with capital controls gave rise to a thriving black market for dollars.