Charles Hoskinson Shuts Down Cardano Critic in Tweet About Mithril Upgrade Cardano founder has responded to critic while talking about approaching Mithril upgrade Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment. Filed under: Bitcoin - @ January 1, 1970 12:00 am