It is Digital Gold team and ticker from token is GOLD.

From what Iknow the team indeed provides/supports liquidity onthe Bitmex market.

To answer your second question in my opinion it is always tohave an alternative nomatter what.

As for now it is not possible to receive USDT or any other stable coin in the Digital Gold Maekrtplace but team is working to add new cryptocurrencies and already made announcements in this thread some time ago.