Common public chains: Ethereum Chain (ETH), Binance Smart Chain (BSC), Huobi Ecological Chain (HECO), Terra Chain, FTM, OKChain, etc. https://chainlist.org  chainlist website can query some common public chain nodes and add settings.

Method 1: Add via Chainlist

Take the Avalanche chain as an example.Open https://chainlist.org/  in your browser to search for the Avalanche chain to add it.

Method 2: Manual setting

Enter the extension custom RPC to add it manually.

The following chain already exists in the OneKey browser extension, and it can be switched automatically. The list is only for reference.

Binance Smart Chain: Network name Binance Smart Chain

New RPC URL: https://bsc-dataseed1.binance.org:443

ChainID: 56

Symbol: bnb

Block explorer: https://bscscan.com/

Huobi Smart Chain: Network name HECO mainnet

New RPC: https://http-mainnet.hecochain.com

Chain ID: 128

Symbol: HT

Block explorer: https://scan.hecochain.com

Fantom chain: network name fantom mainnet

Added RPC: https://rpcapi.fantom.network

Chain ID: 250

Symbol: FTM

Block explorer: https://ftmscan.com