Quote from: cintrondigital on June 28, 2018, 05:12:19 PM

For those of you wondering why the dev team instructed cryptopia to put the wallet in maintenance mode.
Quoted from Telegram

Quote

@everyone We have placed the TOK wallet of cryptopia on maintenance as we will be now Rolling back the entire blockchain so that the 3 to 4 wallets that had got a lot of TOK coins in this masternode-bug-hack will be excluded from the system, rendering their falsely won coins of no use at all. We will soon update the wallet and let you all know on how to update your wallets so that we roll back the blockchain and fix the bug too. Please have patience as this will need proper testing. Thanks to the hackers that they did not yet dumped those falsely won coins.

"rolling back" seems like it goes against everything that crypto stands for. Who gets to decide when to roll back? Why is the blockchain mutable?