At least we know NXT is untrustworthy now plus a major security flaw in its code.
I know how to attack Bitcoin with a 30 GH/s mining rig but noone paid me bounty in advance.
Well, at least we know BTC is untrustworthy now plus a major security flaw in its code...
If they had invited you to a forum and you spent a few days testing your theory which would benefit them by helping secure their network , they would owe you something for your efforts.
And I would call them welchers too.