Banknote and Digital Currency {Bitcoin} are all meant to buy things both in physical shops and online vendors. And countries are trying to adapt to the adoption of the digital currency upon all the restrictions many had laid on it but seen the benefits of it, some lift up the ban.
And many people were excited because bitcoin is decentralized and out of government control and bitcoin is volatile and it is store of value. So people became conscious and like bitcoin the more. If bitcoin transaction is low and retail businesses accept bitcoin as a method of payment. Dollar does devalue bitcoin so the price of things will not be influenced by dollar anymore. But the international market might still affect the price of things because there they would still used dollar for exchange unless the vendors are accepting bitcoin at that level as well. In my own understanding if bitcoin is adopted as a legal tender in my country the cost of living will reduce. The cost of in my country is on the peak that those who are receiving $80 as salary is nothing but a peanut which can't buy anything reasonable in the market again. Dollar is just playing with the Banknote in my country. And the best way is for the retail businesses to accept bitcoin if the transaction fee is low so that things will be okay for the poor. I am very happy that within this almost one year period
When it comes to fiat currency, the United States dollars is the world reserve currency, Switching to Bitcoin running economy isn't still the solution to fixing an economy where inflation is high, because as it stands, I don't think if the world is ready to do away with the fiat currency, the need will still be there, I see Bitcoin play more of the role of Gold, that's a store of value and a hedge against inflation than replacing local currency.
However, an economy can be fixed by increasing or encouraging local production, which will automatically increase supply to put pressure on increasing prices of goods and services and further increase exportation, Government should also build things that will attract foreign investors to invest in the country, thereby increasing the demand for one's local fiat currency and further strengthen and appreciate its value.