In 2013, bitcoin is what I used to pay for the servers pseudonymously," Snowden said Saturday in a virtual appearance
He gained fame in 2013 when he leaked classified information on the National Security Agency's surveillance of U.S. citizens.
Snowden also defended the crypto industry in the face of criticism earlier this month by a group of tech experts who knocked cryptocurrency and blockchain technology in a letter to U.S. lawmakers to counter the industry's lobbying efforts.
Snowden said he believes the signatories were deliberately misunderstanding the crypto industry, recycling a number of the same legacy arguments that have been made repeatedly in the past.