Donald Trump may be banned from social media, but millions still look to him for political leadership. So, it’s worth explaining why the former president’s recent comments on Bitcoin and cryptocurrency are off-base.

For context, cryptocurrency is just what we call decentralized and encrypted digital currencies that are not controlled by any central authority or government. Bitcoin is just the most prominent and well-known cryptocurrency of many. And, apparently, Trump isn’t a fan. In a recent interview with Fox Business, he blasted Bitcoin as a “scam.”