As the economies of the world go digital, cash is being left behind in favour of card or mobile payments. This has prompted central banks to consider issuing digital fiat money. Indeed, 80 per cent of central banks worldwide are looking into digital currencies, while half are already running experiments or pilot schemes, according to a report by the Bank of International Settlements. One interesting scenario would be the creation of a currency that is “blockchain agnostic”, meaning it can exist on public blockchains such as Ethereum. This would allow it to be traded as a crypto asset that is…