A Bitcoin millionaire is facing prison time for hiding $4 million in gains. The individual, who made a fortune from investing in Bitcoin, tried to evade taxes by not reporting their earnings. This decision has now caught up with them, as they are now facing legal consequences for their actions. It serves as a reminder that even in the world of cryptocurrency, taxes must be paid on any gains made. It is important to follow the law and report earnings accurately to avoid facing serious repercussions.