Brian Armstrong is worried the Trump Administration is about to send the cryptocurrency industry a parting gift. The Coinbase CEO took to Twitter Wednesday night to blast the U.S. Treasury Department’s rumored plans to attempt to track owners of self-hosted cryptocurrency wallets with an onerous set of data-collection requirements. If the whispers are to be believed, outgoing Treasury Secretary Steven Mnuchin is preparing to tamp down on one of the fundamental tenets of the cryptocurrency ethos: the ability of the individual to hold their crypto (unmolested) themselves.