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

# Chainstack updates: June 27, 2023

> Optimism Mainnet archive nodes are now available on Chainstack, unlocking access to historical Optimism state for indexers, analytics, and forensic tools.

**Protocols**. Archive nodes are now available for Optimism Mainnet.