FIAT
Non-digital currencies issued and backed by the jurisdictions of various regions. Examples include the US dollar, British pound, Euro, Chinese Yuan, and Japanese Yen.
Impending Central Bank Digital Currency: Data Shows Not All Central Banks Support the Move
The paradox of the situation is that banks with the capacity to push the world into the digital currency era are actually not showing much interest towards adoption; with the reason for their reluctance remaining a question with no answer.