The difference between a digital currency and a cryptocurrency is that the latter is decentralised, meaning it is not issued or backed by a central authority such as a central bank or government. Instead, cryptocurrencies run across a network of computers. Digital currencies have all the characteristics of traditional currencies but exist only in the digital world. They are issued by a central authority.
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Unlike the money you save in a bank insured by the Federal Deposit Insurance Corporation (FDIC), “If a virtual currency company fails – and many have – the government will not cover the loss,” the Consumer Financial Protection Bureau warned in a 2014 notice about cryptocurrency (its most recent guidance).
Now, to be fair to the bitcoin bros (not great) and XRP army (worse), even the World Health Organisation had around that time started pushing the idea that Covid could be being spread by banknotes (while simultaneously recommending that people should not wear masks), now thought to be “very unlikely”. Even if banknotes were a key transmission vector, however, we are not sure that “dirty fiat” itself could be held responsible, given that the vast majority of it only exists in digital form. Why would you use bitcoin, or XRP, or any other crypto token when you can transact digitally using fiat currencies?