> ## 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 4, 2026

> Chainstack TON Global Nodes now serve TON API v4 — REST and WebSocket — alongside v2 and v3 on the same endpoint and auth token, on Mainnet and Testnet.

**Protocols**. Chainstack TON Global Nodes now serve TON API v4 — REST and WebSocket — alongside v2 and v3 on the same endpoint and auth token, on Mainnet and Testnet. v4 adds block-pinned, cacheable URLs for blocks, account state, and get-method calls, and WebSocket streams of new blocks and of the accounts changed in each block. See [TON API v4](/docs/ton-choosing-v2-or-v3#ton-api-v4).