NEW YORK — The founder and former CEO of the cryptocurrency lending platform Celsius Network was sentenced Thursday to 12 years in prison after a prosecutor labeled him a predator who “preyed on hope” by enticing vulnerable customers to risk their life savings for a supposedly safe investment.

Alexander Mashinsky, 59, was sentenced by U.S. District Judge John G. Koeltl, who said a substantial term in prison was necessary for someone who engaged in “extremely serious” crimes that enabled him to pocket over $45 million while some of his customers lost everything and suffered severe psychological harm.

Celsius declared bankruptcy in 2022, exposing risky financial bets Mashinsky had made with some of the $20 billion that thousands of…