Digital currency wallet and digital currency system

A digital currency wallet, comprising:

• a storage unit comprising digital currency and a digital currency wallet mode;
• and
• a transaction unit is configured to check the stored digital currency wallet mode before using the digital currency in a digital currency exchange;
• the digital currency wallet supporting a first digital currency wallet mode, the first digital currency wallet mode being a normal digital currency wallet mode, and a second digital currency wallet mode;
• the transaction unit, when using the digital currency in a digital currency exchange in the normal digital currency wallet mode, is configured to create and/or receive exchange data and to store the exchange data in the storage unit;
• wherein:
• the second digital currency wallet mode is a crisis digital currency wallet mode;
• the digital currency wallet is configured to switch from the normal digital currency wallet mode to the crisis digital currency wallet mode, if crisis switching data are received,
• the crisis switching data being public crisis switching data, and
• the public crisis switching data will be published and/or distributed in a crisis situation.