GreenPay is 100% Proof-Of-Stake. The rest of the 91% come into existence by means of the yearly interest on the existing 9% of GreenPay credits.
How can this coin be
100% Proof-Of-Stake but ALSO be mined with GPU via the wallet and multipools???
It's a multipool. What it does is mine the most profitable coin, and then trade it (via exchanges) for GP. It's not mining GP.