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Arbitrum Bridge

Arbitrum Bridge

What is Arbitrum Bridge?

Arbitrum Bridge

Arbitrum Bridge is the main gateway to transfer ETH and ERC-20 tokens from Ethereum (Layer 1) to Arbitrum (Layer 2).

You only need to connect your wallet to initiate the bridging process on Arbitrum Bridge.


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Bridge to Arbitrum

1. Connect to Arbitrum Bridge with your wallet

  • Go to Arbitrum Bridge at
  • Click ”Connect Wallet’, choose ‘Wallet Connect’
  • Scan the QR with KEYRING PRO
  • On KEYRING PRO app, choose Ethereum chain, tap ‘Connect’



2. Choose either Arbitrum One or Arbitrum Nova to bridge to

pick network on arbitrum bridge


3. Select a token to bridge from Ethereum Network

choose token on arbitrum bridge


4. Enter the amount of ETH/token, then click ‘Move funds to Arbitrum’

enter the amount of token on arbitrum bridge


5. On KEYRING PRO, tap ‘Confirm’


You will receive the bridged token from Arbitrum Bridge in less than 1 hour.


What is Arbitrum?

The concept of Arbitrum

The aggressive growth of Ethereum in the last few years has led to frequent network congestion and soaring transaction fees.

This issue is so-called the problem of scalability due to network infrastructure limitation.

Therefore, various scaling solutions such as Layer 2, sidechains have been introduced to support the Ethereum network (Layer 1).

Those new chains help users to transfer assets to a faster and cheaper environment that running parallelly to the Ethereum blockchain.

Arbitrum is one of those projects. It uses the idea of optimistic rollups to lower gas fees for transactions.

Basically, optimistic rollups allow smart contracts to “roll up” off-chain transactions into bundles, which spreads the costs of the bundled transactions efficiently.

As a result, Arbitrum optimistic rollups can lower gas fees and reduce network congestion, while enduring high security standards.

Arbitrum Optimistic Rollups

Arbitrum was developed by Offchain Labs, a New York-based company.

The network was built with certain advantages.

  • Trustless security: Security established by Ethereum network, with interoperability results between Layer 1 and Layer 2.
  • Compatibility with Ethereum: Capable of running unmodified EVM contracts, or unmodified Ethereum transactions.
  • Scalability: Shift contracts’ computation and storage off the main Ethereum chain, allowing much higher throughput.
  • Minimum cost: Minimize cost per-transaction incomparison to Ethereum.


Arbitrum Team



Arbitrum project raised a $20 million Series A in April 2021, promptly followed up by a $100 million Series B guided by Lightspeed Venture Partners that closed in August 2021.

Other investors include Pantera Capital, Ribbit Capital, Polychain Capital, Redpoint Ventures, Alameda Research and Mark Cuban.

Arbitrum Investor Image


Arbitrum RPC

Arbitrum One RPC

  • Chain ID: 42161
  • Network Name: Arbitrum One
  • RPC:
  • Currency Symbol: ETH
  • Block Explorer URL:


Arbitrum Nova RPC

  • Chain ID: 42170
  • Network Name: Arbitrum Nova
  • RPC:
  • Currency Symbol: ETH
  • Block Explorer URL:


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Add Arbitrum RPC to KEYRING PRO

Arbitrum is supported natively on KEYRING PRO, but you may learn how to add RPC on KEYRING PRO in the steps below.

  1. Download KEYRING PRO on iOS, Android, APK, Huawei App Gallery, or Mac M1
  2. Create a multichain account
  3. Add RPC

add rpc on keyring pro app

  • On home screen, tap ‘Menu’ icon
  • Choose ‘Manage Chains’
  • Tap on the ‘+’ icon
  • Insert RPC parameters, please refer to the RPC section above.
  • Tap ‘Add’
  • On the home screen, choose an address you want to use on the newly added chain, or you can create a new account
  • Choose ‘Use this address with other chains’
  • Choose the newly added chain
  • Tap ‘Create’


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