Congratulations to the winner and since I've got time to check, I've seen that the winner is claiming that you've sent it to the wrong person. I can't tell if this guy is legitly telling that you sent it to the wrong one or he's just trying to ask for another 0.009
BTC.
Well, do you have plans of giving away $50 worth of bitcoin again in some other ways? if you want to gain exposure with your app, you should also start a signature campaign here in the forum.
Edit:
I guess you should require a bitcoin signed message for the address since many can claim that they're the winner like just what happened on your previous draw, mentioning the username isn't enough.
If not, you'll be dealing a lot of problems instead.
Yeah, you just posted to me earlier with few secs.
We don't know if that guy is telling the truth and the prize was sent to the wrong one. But for cryptoapp, they already paid it and no way that they will pay for another one.