The most straightforward way for the government to control cryptocurrencies is to tax any fiat money used to purchase a virtual token. Furthermore, many early adopters and hardliners prefer cryptocurrencies to traditional fiat currencies as a medium of exchange for fundamental goods and services.

Primarily, cryptocurrencies were designed to be independent of government control, and the government's role in crypto is minor. However, even if the government grants decentralization legitimacy, it can't control crypto.