Perhaps CBDCs (Central bank digital currencies) are close to what you're looking at, the concept being digital money issued and verified by a central authority.

Perhaps CBDCs (Central bank digital currencies) are close to what you're looking at, the concept being digital money issued and verified by a central authority. There's been a bunch of research done by the central banks of various countries e.g. https://www.bankofengland.co.uk/research/digital-currencies https://www.bankofengland.co.uk/research/digital-currencies https://www.federalreserve.gov/central-bank-digital-currency.htm https://www.federalreserve.gov/central-bank-digital-currency...