The entire purpose of the Federal Reserve is to enable a system of monetary expansion or contraction on whim, which is also why the gold / silver standard had to be abandoned (they are contradictory concepts).
The modern central bank, in this case the Federal Reserve, is the very antithesis of the bitcoin / cryptocurrency concept. There can be no union of the concepts. The Fed requires the ability to debase the nation's currency at any time and for any reason it sees fit. Without the current Fed system you can't run the military industrial complex, you can't 'pay for' the entitlement liabilities via inflation, you can't hold consumer and corporate borrowing costs artificially low, you can't run wild budget deficits and then pay hyper low interest rates on that debt via debt monetization / QE, you can't arbitrarily inflate assets to fake prosperity, and so on. There's zero chance the Fed or US Government gives up any of those powers unless they have no other choice.