What do cryptocurrencies do, regardless of blockchain technology? You need to exchange your crypto money in order for what you have to be worth money. So at the end of the day, you have to return to the money that the country prints. If the goal is cheap and fast transfer, there is a solution. Countries issue their own digital currencies all the time. Or if it is to protect the value of what you have against the money printed by countries, then there is real money: Gold.

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