Maybe some kind of cryptocurrency, but it's unlike to be Bitcoin. When people get paid, they want the value of their payment to not massively go up/down each week.
You can be paid usd amount at the fx at the time of transfer in bitcoin and you can convert it right away if you want. Or use stablecoin for transfers. It's actually relatively trivial to have dozens of options of payment options depending on employee preference (I mean once you have cryptocurrency payroll setup it's not difficult to have all available options... available and customizable by receiver).
