> For the complete documentation index, see [llms.txt](https://docs.arrng.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.arrng.io/introduction.md).

# Introduction

Key features:

* Signed and verifiable off-chain rng
* Uses class-leading random.org
* Response and signature on-chain
* Multi-chain
* Easy to use
* No subsription contract
* No tokens to buy
* No complicated setup
* Quick and efficient