President Donald Trump said he knows nothing about Binance founder Changpeng Zhao — or that company’s recent involvement in a cryptocurrency venture linked to Trump’s family — despite granting him a pardon last month.

Asked in a CBS “60 Minutes” interview that aired on Sunday why he pardoned the former crypto executive known as CZ, Trump said, “Okay, are you ready? I don’t know who he is.”

Trump suggested that his decision to pardon CZ was motivated by a desire to make the U.S. more globally competitive in the nascent crypto industry. And he accused the government under his predecessor, former President Joe Biden, of waging a “witch hunt” against CZ, even as Trump repeatedly denied knowledge of his case.

“My sons are involved in crypto much more than I— me. I— I know very little about it, other than one thing. It’s a huge industry,” he said. “And if we’re not gonna be the head of it, China, Japan, or someplace else is.”