What Is Ethereum?

Ethereum is the world’s second-largest crypto project by market capitalization and was the first to introduce smart contract functionality to the industry.
By Alyssa Hertig
Sep 9, 2021
Crypto Explainer+

Ethereum is a blockchain-based software platform that is primarily used to support the world’s second-largest cryptocurrency by market capitalization after Bitcoin. Like other cryptocurrencies, Ethereum can be used for sending and receiving value globally and without a third party watching or stepping in unexpectedly.

Value exchange is the main use case of the Ethereum blockchain today, often via the blockchain’s native token, ether. But many of the developers are working on the cryptocurrency because of its long-term potential and the ambitious vision of its developers to use Ethereum to give users more control of their finances and online data. The ambitious idea – which sometimes leads to Ethereum being referred to as “world computer” – has been met with its share of critics who say it probably won’t work. But if this experiment rolls out as planned, it would spawn apps very different from Facebook and Google, which users knowingly or unknowingly trust with their data.

Ethereum enthusiasts aim to hand control back to users with the help of a blockchain, a technology that decentralizes data so that thousands of people around the world are handed a copy. Developers can use Ethereum to build leaderless applications, which means that a user’s data cannot be tampered with by the service’s creators.

Ethereum was first proposed in 2013 by developer Vitalik Buterin, who was 19 at the time, and was one of the pioneers of the idea of expanding the technology behind Bitcoin, blockchain, to more use cases than transactions.

While Bitcoin was created with the goal of disrupting online banking and day-to-day transactions, Ethereum’s creators aim to use the same technology to replace internet third parties – those that store data, transfer mortgages and keep track of complex financial instruments. These apps aid people in innumerable ways, such as paving a way to share vacation photos with friends on social media. But they have been accused of abusing this control by censoring data or accidentally spilling sensitive user data in hacks, to name a couple of examples.

The platform officially launched in 2015, turning the idea of Ethereum into a real, functioning network.