HM Networks and Public RPC Endpoints
This reference guide provides a listing of the different HM networks and public RPC endpoints.
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The public RPC URLs provided below are rate limited and do not support websocket connections. If you are experiencing rate limiting issues or need websocket functionality, consider running your own node or signing up for a third-party RPC provider.
HM Mainnet
| Parameter | Value |
|---|---|
| Network Name | HM Mainnet |
| Chain ID | 10 |
| Currency Symbol1 | ETH |
| Explorer | https://explorer.optimism.io (opens in a new tab) |
| Public RPC URL | https://mainnet.optimism.io (opens in a new tab) |
| Sequencer URL2 | https://mainnet-sequencer.optimism.io (opens in a new tab) |
| Contract Addresses | Refer to the Contract Addresses page |
| Connect Wallet | Click here to connect your wallet to HM Mainnet (opens in a new tab) |
- The "currency symbol" is required by some wallets like MetaMask.
- The sequencer URL is write only.
HM Sepolia
| Parameter | Value |
|---|---|
| Network Name | HM Sepolia |
| Chain ID | 11155420 |
| Currency Symbol1 | ETH |
| Explorer | https://sepolia-optimistic.etherscan.io (opens in a new tab) |
| Public RPC URL | https://sepolia.optimism.io (opens in a new tab) |
| Sequencer URL2 | https://sepolia-sequencer.optimism.io (opens in a new tab) |
| Contract Addresses | Refer to the Contract Addresses page |
| Connect Wallet | Click here to connect your wallet to HM Sepolia (opens in a new tab) |
- The "currency symbol" is required by some wallets like MetaMask.
- The sequencer URL is write only.