How to earn DNP?

[EventHorizon]

So I went to the cash shop earlier and discovered that we can now purchase anything from the cash shop using DNP.
The question is, where can we earn DNP for Free? xD
I can't provide any pictures because when I press my print screen button my DN will not respond.
You can see for yourself.

[SadisticEin]

Afaik not obtainable now, for future events probably yes