Question 1

What is the chain ID for OPN Chain Mainnet?

Accepted Answer

The chain ID for OPN Chain Mainnet is 222.

Question 2

What is the native currency of OPN Chain Mainnet?

Accepted Answer

The native currency of OPN Chain Mainnet is IOPN.

Question 3

How many RPC endpoints does OPN Chain Mainnet have?

Accepted Answer

OPN Chain Mainnet has 4 HTTP RPC endpoints available for testing on rpchub.top.

Question 4

How to add OPN Chain Mainnet to MetaMask?

Accepted Answer

Visit rpchub.top/chain/222 and click the "Add to Wallet" button to add OPN Chain Mainnet to MetaMask with one click.

OPN Chain Mainnet