Largest Bitcoin exchange MtGox shut down after it had announced to have suffered technical issues that forced the exchange to suspend withdrawals for a week. Mark Karpeles has resigned from the board of the Bitcoin Foundation has confirmed in the official statement: Effective immediately, Mt. Gox has submitted their resignation from the. board of directors. We are very sorry for the delays and deeply appreciate your kind understanding and continuous support The situation appears critical, the official Twitter account stoppedall the trading systems were shut down.”]