# Arbitrum Orbit

XR One is an Arbitrum Orbit Layer 3 blockchain which settles onto [Arbitrum One](https://arbitrum.io/rollup).

Orbit chains permissionlessly scale Ethereum through custom app-chains, where execution layers are isolated, but the consensus layer is shared.

XR One has been built with the following configuration:

* Dedicated throughput
* EVM+ compatibility
* Developer roadmap independence
* Reliable gas prices
* Support for ERC-4337 Account Abstraction
* XR as gas token
* Expanded decentralisation via [Hero Nodes](../../nodes/hero-nodes)
* Security

Learn more about Arbitrum Orbit chains [here](https://docs.arbitrum.io/launch-orbit-chain/orbit-gentle-introduction).
