Ethereum is a decentralized Web 3.0 platform for the peer-to-peer creation and publishing of smart contracts created in a Turing-complete programming language. The cryptocurrency linked to it, Ether, is second in capitalization behind Bitcoin. In order to run on the peer-to-peer network, Ethereum contracts pay for the use of its computational power through a unit of account, called Ether, which therefore acts both as a cryptocurrency and as fuel.

Unlike many other cryptocurrencies, Ethereum is not just a network for exchanging monetary value, but a network for running Ethereum-based contracts. These contracts can be used securely to perform a vast number of operations: electoral systems, domain name registration, financial markets, crowdfunding platforms, intellectual property, etc. The community of enthusiasts supporting Ethereum has quickly grown to include 111 groups in 83 cities in over 34 countries. Groups of enthusiasts are organized via the Meetup platform.