Electrum wallet is a software interface for operations with Bitcoin cryptocurrency. There are client versions for bitcoin forks: Litcoin, Bitcoin Cash, Dash, and Vertcoin. The main feature of the wallet is speed, low resource use, and simplicity. It starts instantly, as it works in conjunction with high-performance servers that handle the most complex tasks of the Bitcoin system. The blockchain is stored and updated on the company’s server, and the client interacts with it through special software for stationary and mobile devices.