> ## 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: September 16, 2026

> Arc Mainnet is now available on Chainstack Global Nodes and Dedicated Nodes, and Global Nodes now show an Extended label for Full nodes that keep more ledger history than a standard full node.

**Protocols**. Arc Mainnet is now available on Chainstack. Arc is Circle's USDC-native, EVM-compatible L1 for stablecoin payments. You can deploy [Global Nodes](/docs/global-elastic-node) and [Dedicated Nodes](/docs/dedicated-node) for Arc Mainnet, in Full and Archive modes with debug and trace.

**Nodes**. Global Nodes now show an **Extended** label for Full nodes that keep more ledger history than a standard full node — more retention than Full, without being a complete Archive. It adds no pricing or request-unit change.