By any reasonable definition, Bitcoin is a fiat currency. Unlike commodities like gold or silver, it has no inherent value whatsoever, and no applications for industrial use or jewellery.
Bitcoin is a fiat currency because it only has value while some group of humans collectively agree to pretend that is has value. The same as dollars or yen.
Bitcoin is a fiat currency because it only has value while some group of humans collectively agree to pretend that is has value. The same as dollars or yen.