# Ethereum

By [airdrophin](https://paragraph.com/@airdrophin) · 2023-10-04

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Ethereum is a decentralized open-source blockchain platform that allows developers to build and deploy smart contracts and decentralized applications (DApps). As the second-largest cryptocurrency by market capitalization, Ethereum offers a wide range of use cases beyond mere digital currency. Its native cryptocurrency, Ether (ETH), is used to power transactions and incentivize participants in the network.

One of Ethereum's groundbreaking features is its ability to execute self-executing smart contracts, which automate interactions and eliminate the need for intermediaries. This enables the creation of DApps that operate without censorship or downtime. Ethereum's platform has spurred the growth of various innovative projects, including decentralized finance (DeFi), non-fungible tokens (NFTs), and decentralized exchanges (DEXs).

However, Ethereum faces challenges such as scalability and high transaction fees. To address these issues, Ethereum is currently undergoing a transition from a proof-of-work (PoW) consensus mechanism to a more energy-efficient proof-of-stake (PoS) model with the introduction of Ethereum 2.0. This upgrade aims to improve scalability, reduce costs, and increase transaction speed on the network.

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*Originally published on [airdrophin](https://paragraph.com/@airdrophin/ethereum)*