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Ethereum is a decentralized platform enabling smart contracts and decentralized applications (dApps), revolutionizing finance and technology.

About this subject

Ethereum was proposed by Vitalik Buterin in 2013 at age 19 and officially launched on July 30, 2015, as a programmable blockchain. Unlike Bitcoin, which focuses on being a digital currency, Ethereum is a Turing-complete platform that executes smart contracts. The Ethereum Virtual Machine (EVM) allows developers to create decentralized applications (dApps) that run exactly as programmed without censorship, fraud, or third-party interference.

The native cryptocurrency, Ether (ETH), serves as fuel for transactions and contract execution, paid in the form of gas fees. In September 2022, Ethereum underwent a major upgrade called The Merge, transitioning from Proof-of-Work (PoW) to Proof-of-Stake (PoS), reducing energy consumption by approximately 99.95%. This milestone improved blockchain sustainability and paved the way for future scalability improvements like sharding.

The Ethereum ecosystem has driven innovations such as decentralized finance (DeFi), offering financial services without intermediaries; non-fungible tokens (NFTs), representing unique digital assets; and decentralized autonomous organizations (DAOs), enabling community governance. Additionally, Ethereum supports the ERC-20 token standard, which fueled an explosion of cryptocurrencies and utility tokens. In 2021, the DeFi market peaked with over $100 billion in total value locked, mostly on Ethereum-based protocols.

Fun facts: Ethereum's whitepaper was published in 2013, and its initial coin offering (ICO) in 2014 raised about $18 million, selling ETH at roughly $0.40 each. The Ethereum community is one of the largest in crypto, with thousands of developers worldwide. Despite competition from blockchains like Solana and Avalanche, Ethereum remains the leading smart contract platform by total value locked and developer adoption.

Frequently Asked Questions

What differentiates Ethereum from Bitcoin?

Bitcoin is primarily a decentralized digital currency, while Ethereum is a programmable platform enabling smart contracts and decentralized applications (dApps). Ethereum supports tokens, NFTs, DeFi, and more, making it a general-purpose platform.

How does Ethereum's transition to Proof-of-Stake work?

In September 2022, Ethereum transitioned from Proof-of-Work to Proof-of-Stake via 'The Merge' upgrade. Now, validators (stakers) lock ETH as collateral to propose and validate blocks, earning rewards. This reduced energy consumption by 99.95% and prepares the network for future scalability improvements.

What are smart contracts on Ethereum?

Smart contracts are self-executing programs that run on the Ethereum blockchain. They contain terms written in code and automatically execute when predefined conditions are met, without intermediaries. They are used in DeFi, NFTs, DAOs, and any other dApp.