I'm too stupid, I sent 500 000 dgb on cryptsy .... but did my deposit with dogecoin adress !
The 500 000 coins are gone of my wallet and transaction is confirmed but of course are not on my cryptsy wallet. Wonder if I can recover them

I did that on coinmarket but with only 50000DGB, only Cryptsy can recover them but i wouldn't get your hopes up since they may not be willing to go to the effort required.