It finally happened, someone managed to successfully doublesped almost 80,000 QuatlooCoin on @Bittrex Exchange. From my point of view, the coin is officially DEAD until the damn shitcoin is replaced with a Bitshares, Ethereum or soon to come, Golos or Steem Issued Tokens.
This just show how vulnerable POW-Coins are for 51% attacks. Be aware! @Bittrex has disabled the wallet for deposits and withdraw, and AFAIK the Coin-Dev and the QuatlooCoin community has not yet been informed.
I obtained the following information by accident/confusion - so you might be one of the first people to know about this major fuckup.