Surprised by the sudden air pocket below bitcoin? Curious if this was caused by some new, unconfirmed Chinese crackdown on bitcoin traders, exchanges, and other money laundered? No, the answer is Jamie Dimon, who in a angry outburst during the same conference in which he preannounced JPM’s 20% trading revenue drop, lashed out at the crypto currency, calling it a fraud, “worse than tulip bulbs”, says it “won’t end well” and will “eventually blow up”, and that “any trader trading bitcoin” will be fired for being stupid.