# Unichain

> Unichain is a DeFi-native Ethereum Layer-2 blockchain, optimizing liquidity, efficient markets, and quick cross-chain settlements through an optimistic rollup f...

- Canonical URL: https://iq.wiki/wiki/unichain
- Categories: Projects & Protocols
- Tags: Layer 1, Infrastructure
- Created: 2024-10-11T12:53:13.805Z
- Last updated: 2024-10-28T22:17:30.294Z
- Source: IQ.wiki — the world's largest blockchain and crypto encyclopedia (https://iq.wiki)

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**Unichain** is a [DeFi](https://iq.wiki/wiki/defi)-native [Ethereum](https://iq.wiki/wiki/ethereum)[ Layer-2](https://iq.wiki/wiki/layer-2) blockchain, built to be the home for liquidity across chains. [\[1\]](#cite-id-jjcq1qmiqbo)[\[2\]](#cite-id-w2qjiwng5u)  
  
# Overview  
  
Unichain is an [optimistic rollup](https://iq.wiki/wiki/optimistic-rollup) optimized for efficient markets by delivering efficient state updates, offering a framework for applications to internalize MEV (maximal extractable value), and providing an economic finality system for quick settlement across [blockchains](https://iq.wiki/wiki/blockchain). [\[4\]](#cite-id-t33zu6vl3q)  
  
Launched on October 10, 2024, the development of Unichain is a collaborative effort across many organizations: [Uniswap](https://iq.wiki/wiki/uniswap) Labs - is the primary technical provider for Unichain and operates the Unichain Sequencer and Uniswap Foundation - provides grants and support for developers. [\[3\]](#cite-id-t3f15umku69)  
  
Unichain includes open-source code contributions from [Optimism](https://iq.wiki/wiki/optimism), Flashbots, and Paradigm research teams. [\[3\]](#cite-id-t3f15umku69)  
  
Unichain, including the block builder and node software, is open source (MIT licensed) and available for other chains to adopt. [\[5\]](#cite-id-tznd9gv64v)  
  
The chain is said to provide instant transactions, reduced cost and further decentralization, and cross-chain liquidity. [\[6\]](#cite-id-n8k73lu8w5e)  
  
# Use Cases  
  
* Writing [smart contracts](https://iq.wiki/wiki/smart-contract)  
* Deploying an [ERC-20](https://iq.wiki/wiki/erc-20) contract  
* Creating a [Pool](https://iq.wiki/wiki/liquidity-pool)[\[2\]](#cite-id-w2qjiwng5u)[\[3\]](#cite-id-t3f15umku69)