As long as the government can back it up? Nothing. If the government is unable to deliver the promised BTC when bearers request it, the utility of the governme

As long as the government can back it up? Nothing. If the government is unable to deliver the promised BTC when bearers request it, the utility of the government-printed notes is severely diminished. The gold standard was broken when the US Dollar had sufficient fiat value that people were willing to accept it without the gold backing.