> ## 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 1, 2021

> Binance Smart Chain mainnet and testnet node support, two-factor authentication for Chainstack accounts, and a BSC BEP-1155 contract tutorial.

* **Protocols**. Binance Smart Chain support. You can now deploy full Binance Smart Chain nodes on mainnet and testnet.
* **2FA**. You can now add an extra layer of security to Chainstack account with two-factor authentication (2FA). Once enabled, you will be prompted to enter a code generated by your mobile device each time you log in.
* **Documentation**. Binance Smart Chain general description, operations, BEP-1155 contract tutorial.