I see QRK and QRK2 coins in the exchanges.
I have read the last pages of this thread and from what I understood there was an upgrade to move from the original Quark algorithm to a masternode system.
However, on the exchanges websites, there are two coins listed, QRK and QRK2. Are these the same thing ?
Not the same thing at all.
QRK2 was another quark clone with the Pivx MN built on top.
It has been rebranded Pivx Lite.
The original Quark is always QRK. It now has in addition the Dash MN code.
Hope that helps.