MetaMask Wallet

How to add networks on MetaMask Wallet

Visit OpenOcean trading interface, and select the chain you would like to swap, then click MetaMask. OpenOcean supports automatic configuration of networks. If it's your first time connect this chain, you only need to click Approve on the pop-up wallet window. Then you don't need to add the network again next time.

After Approve, you will see your wallet address has connected to the chain on OpenOcean. Now you can start to swap!

How to manually add networks on MetaMask Wallet

In most cases, you can add the networks on wallets automatically. But somtimes, the automatically configured RPC nodes may be abnormal. Then you can choose manually add networks MetaMask or modify RPC by your own. Please see the following way to restore the network connection of the MetaMask wallet.

• Expand view, click my account then Settings

• Click “Networks” on the right side then you can modify RPC or add a network

• After entering the info, then click "Save" in the wallet

Ethereum Settings

Ethereumsetting parameters：

Network Name: Ethereum Mainnet

New PCR URL: https://mainnet.infura.io/v3/

ChainID: 1

Symbol: ETH

Block Explorer: https://etherscan.io

Recommended RPC URL:

• https://mainnet.infura.io/v3/

• https://rpc.ankr.com/eth

• https://cloudflare-eth.com

More RPC URL references:https://chainlist.org/en

BNB Chain Settings

BNB Chainsetting parameters：

Network Name: BNB Mainnet

New PCR URL: https://bsc-dataseed1.binance.org

ChainID: 56

Symbol: BNB

Block Explorer: https://bscscan.com/

Recommended RPCURL:

• https://bsc-dataseed.binance.org

• https://bsc-dataseed1.binance.org

• https://rpc.ankr.com/bsc

More RPC URL references:https://chainlist.org/en

Polygon(Matic) Settings

Polygon(Matic) Chain Networksetting parameters：

Network Name: Matic Mainnet

New PCR URL: https://rpc-mainnet.maticvigil.com

ChainID: 137

Symbol: Matic

Block Explorer: https://polygonscan.com

Recommended RPCURL:

• https://rpc-mainnet.maticvigil.com

• https://polygon-rpc.com

• https://rpc.ankr.com/polygon

More RPC URL references:https://chainlist.org/en

Fantom Settings

Fantom Chain Networksetting parameters：

Network Name: Fantom Mainnet

New PCR URL: https://rpcapi.fantom.network

ChainID: 250

Symbol: FTM

Block Explorer: https://ftmscan.com

Recommended RPCURL:

• https://rpcapi.fantom.network

• https://rpc.ftm.tools

• https://rpc.ankr.com/fantom

More RPC URL references:https://chainlist.org/en

AVAX C-Chain Settings

AVAX C-Chain Networksetting parameters：

Network Name: AVAX C-Chain Mainnet

New PCR URL: https://api.avax.network/ext/bc/C/rpc

ChainID: 43114

Symbol: AVAX

Block Explorer: https://cchain.explorer.avax.network/

Recommended RPCURL:

• https://api.avax.network/ext/bc/C/rpc

• https://cchain.explorer.avax.network/

• https://rpc.ankr.com/avalanche

More RPC URL references:https://chainlist.org/en

Optimism Settings

Optimism Chain Networksetting parameters：

Network Name: Optimism Mainnet

New PCR URL: https://mainnet.optimism.io

ChainID: 10

Symbol: ETH

Block Explorer: https://optimism.io/

Recommended RPCURL:

• https://mainnet.optimism.io

• https://rpc.ankr.com/optimism

More RPC URL references:https://chainlist.org/en

Arbitrum Settings

Arbitrum Chain Networksetting parameters：

Network Name: Arbitrum Mainnet

New PCR URL: https://arb1.arbitrum.io/rpc

ChainID: 42161

Symbol: ETH

Block Explorer: https://arbiscan.io

Recommended RPCURL:

• https://arb1.arbitrum.io/rpc

• https://rpc.ankr.com/arbitrum

Aurora Settings

Aurorasetting parameters：

Network Name: Aurora Mainnet

New PCR URL: https://mainnet.aurora.dev

ChainID: 1313161554

Symbol: aETH

Block Explorer: https://arbiscan.io

Recommended RPCURL:

• https://mainnet.aurora.dev

Boba Settings

Bobasetting parameters：

Network Name: Boba Mainnet

New PCR URL: https://mainnet.boba.network

ChainID: 288

Symbol: OETH

Block Explorer: https://blockexplorer.boba.network

Recommended RPCURL:

• https://mainnet.boba.network

• https://lightning-replica.boba.network

Harmony Settings

Harmonysetting parameters：

Network Name: Harmony Mainnet

New PCR URL: https://rpc.ankr.com/harmony

ChainID: 16666600000

Symbol: ONE

Block Explorer: https://explorer.harmony.one/

Recommended RPCURL:

• https://rpc.ankr.com/harmony

• https://api.harmony.one

• https://harmony-0-rpc.gateway.pokt.network

More RPC URL references:https://chainlist.org/en

Gnosis(xDAI) Settings

Gnosis(xDAI)setting parameters：

Network Name: Gnosis Mainnet

New PCR URL: https://rpc.gnosischain.com

ChainID: 100

Symbol: xdai

Block Explorer: https://blockscout.com/xdai/mainnet

Recommended RPCURL:

• https://rpc.ankr.com/gnosis

• https://rpc.gnosischain.com

• https://xdai-archive.blockscout.com

More RPC URL references:https://chainlist.org/en

HECO Settings

Hecosetting parameters：

Network Name: Heco Mainnet

New PCR URL: https://http-mainnet.hecochain.com

ChainID: 128

Symbol: ht

Block Explorer: https://hecoinfo.com

Recommended RPCURL:

• https://http-mainnet.hecochain.com

• https://hecoapi.terminet.io/rpc

OKC Settings

OKCsetting parameters：

Network Name: OKE Mainnet

New PCR URL: https://exchainrpc.okex.org

ChainID: 66

Symbol: okt

Block Explorer: https://www.oklink.com/okexchain

Recommended RPCURL:

• https://exchainrpc.okex.org

Cronos Settings

Cronos setting parameters：

Network Name: Cronos Mainnet

New PCR URL: https://evm-cronos.crypto.org

ChainID: 25

Symbol: CRO

Block Explorer: https://cronos.crypto.org/explorer

Recommended RPCURL:

• https://evm.cronos.org

• https://evm-cronos.crypto.org

Moonriver Settings

Moonriver setting parameters：

Network Name: Moonriver Mainnet

New PCR URL: https://rpc.moonriver.moonbeam.network

ChainID: 1285

Symbol: movr

Block Explorer: https://moonriver.moonscan.io

Recommended RPCURL:

• https://rpc.moonriver.moonbeam.network

• https://moonriver.api.onfinality.io/public

• https://moonriver.public.blastapi.io

More RPC URL references:https://chainlist.org/en