1. Payza is not a digital currency, you have accounts in usd,euro etc.
2. Payza is owned by a U.K. based company
3. Payza has a license to operate in the United States as a money transfer service
4. Payza is designed to be a rival to paypal
Liberty Reserve did not even have a license to operate in Costa Rica,whereas Payza works hard to make sure they are legal in every country they operate in. The company that bought payza(formerly alertpay) is a consultant company in the field of advanced payments.
There is no need to worry about Payza being shut down, the people that claim it may be shut down, do not know what they are talking about.