> ## Documentation Index
> Fetch the complete documentation index at: https://docs.theblockchainlibrary.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Arbitrum

> Arbitrum scales Ethereum with optimistic rollups and an EVM-compatible execution environment.

# Arbitrum

Arbitrum scales Ethereum with optimistic rollups and an EVM-compatible execution environment.

**The leading Ethereum optimistic rollup by TVL.**

Arbitrum scales Ethereum with optimistic rollups and an EVM-compatible execution environment.

## Resource details

* **Organization:** Offchain Labs
* **Category:** Layer 2
* **Difficulty:** intermediate
* **Official:** Yes
* **Editorial label:** Solid Reference

## Official resource

[Visit Arbitrum](https://arbitrum.io)

## Related knowledge

* [Base](/generated/v2/resources/base) — resource
* [Base](/generated/v2/resources/base) — related-resource
* [Ethereum.org](/generated/v2/resources/ethereum-org) — resource
* [Ethereum.org](/generated/v2/resources/ethereum-org) — related-resource
* [Optimism](/generated/v2/resources/optimism) — resource
* [Optimism](/generated/v2/resources/optimism) — related-resource

***

**Canonical knowledge ID:** `resource:arbitrum`