Ethereum is the second most important and largest cryptocurrency after Bitcoin. If Bitcoin is considered digital gold, then Ethereum would be digital oil, as it facilitates economic activity. Through the Ethereum Virtual Machine (EVM), developers can deploy smart contract computer programs that run on the network. Ethereum is designed as a general-purpose programmable blockchain that operates a virtual machine capable of executing code of arbitrary and unbounded complexity. It is a decentralized, open-source blockchain platform with smart contract functionality.