1. Infrastructure company pre funds an account with an issuing bank.
2. User sends digital currency to infrastructure company to add to their card.
3. Infrastructure company receives that currency, and alerts bank to debit their account for fiat.
4. Infrastructure company has to find an exchange to trade OTC as often as possible to protect against as much volatility as possible, while keeping in mind the minimum OTC trade size is generally $250k USD.
5. Infrastructure company has to wait 3 days for a wire to then add more funds to the pre funded account.