Government issued currency is called fiat money. It is considered as the legal tender of a country.
For example, in the U.S, dollars are fiat money.
Disclaimer: Crypto products and NFTs are unregulated and can be highly risky. There may be no regulatory recourse for any loss from such transactions. Each investor must do his/her own research or seek independent advice if necessary before initiating any transactions in crypto products and NFTs.
