The growing diversity of applications on the Ethereum blockchain has created the urgent need to address many conventional issues. As the number and variety of applications on the Ethereum blockchain continue increasing, the network experiences issues due to congestion. Imagine thousands of users sending transactions for verification on the Ethereum blockchain through smart contracts. You might be wondering about the relationship between an Arbitrum bridge tutorial and congestion on the Ethereum network. 

Both of them have a significant relationship, and you can learn more about it in an introduction to the Arbitrum Bridge. Is Arbitrum the same as other blockchain bridges? What are the problems it solves and the challenges it aims to address? The following discussion will help you find a detailed guide to Arbitrum and its functionalities. You can learn more about its general functionality and the uses of Arbitrum Token Bridge alongside the related challenges. 

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Definition of Arbitrum

The first highlight in any discussion about Arbitrum would refer to its definition. Ethereum is undoubtedly the second most popular blockchain network and the first preference for developing dApps. However, the cost of popularity comes in the form of network congestion. The answers to “What is an Arbitrum Bridge?” solve the problems due to high network congestion. It aims to offer a reliable answer to the issues of rising transaction fees on the Ethereum network. 

One of the important highlights of Ethereum transactions refers to the implementation and execution of smart contracts. Therefore, you would need to pay a specific transaction fee, which helps in providing rewards to network participants storing programmable smart contracts on their machines. The transaction fee climbs up when the network has to process more transactions. Furthermore, the Ethereum blockchain also implies the necessity for making the code and data of every contract public, which also imposes additional costs on the users. 

Arbitrum is a layer 2 scaling solution for helping you deal with problems in scalability. Anyone seeking an Arbitrum bridge airdrop must know that Arbitrum can reduce network transaction costs and congestion. It achieves the same by offloading computation work and data storage from the mainnet or layer 1 of the Ethereum blockchain. Arbitrum Bridge follows the mechanism of layer 2 scaling solutions by developing over Ethereum blockchain with the facility of off-chain data storage.

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Architecture of Arbitrum

The important points you need to cover before using the Arbitrum bridge MetaMask extension would focus profoundly on the Arbitrum architecture. You can find four crucial components in the Arbitrum ecosystem, suitable for different functions. The four components refer to important roles such as verifiers, key, virtual machine, and manager. Here is a brief overview of their functions within the Arbitrum ecosystem.

  • Verifier

The Verifier is a global entity or distributed protocol responsible for checking the legitimacy of transactions and taking responsibility for the publication of accepted transactions. 

  • Key

The Key points at a protocol member capable of currency ownership alongside proposing transactions. You can rely on the hash of the public key as the identification mark. Furthermore, the key also helps in proposing transactions by signing them with private keys on the transaction. 

  • Virtual Machine

The Virtual Machine or VM in Arbitrum is a virtual participant in the protocol with the required code and data for defining operations of the virtual machine. 

  • Manager

The Virtual Machine manager is an individual responsible for maintaining track of the progress of the virtual machine. In addition, the manager also ensures that the VM performs according to the desired expectations. 

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How Does Arbitrum Work?

Before you dive into details about the fast Arbitrum bridge, you need to learn about the basics of how Arbitrum works. It follows a basic cryptocurrency design, wherein interested parties could facilitate the implementation of smart contracts as a virtual machine. Virtual Machines are programs operating on the Arbitrum Virtual Machine or AVM architecture. The designer of the virtual machine allocates a group of managers for the concerned virtual machine. 

It is important to note that an honest manager could force the virtual machine to work according to the code. The parties associated with the outcome of the virtual machine could select individuals to take on the role of managers or ensure direct management. Furthermore, the working of Arbitrum can also imply reasonable limits on a generally acceptable collection of managers for different contracts. 

The best Arbitrum bridge working explanation would also showcase how it does not force all validators to replicate the execution of each VM. On the contrary, managers can help in moving ahead the state of a VM at a considerably lower cost for verifiers. In such cases, verifiers only need to track the hash for the state of the virtual machine rather than the complete state. Managers receive an incentive for agreeing to the virtual machine’s functionality.

Verifiers would accept the state modifications with the support of all managers. In the case of disagreement among two managers regarding the actions of a VM, verifiers can use the bisection technique to reduce the disagreement. How? The working of Arbitrum bridge involves executing a single instruction followed by a manager offering simple proof of the concerning instruction. In addition, the virtual machines and the involved parties could send currency and messages to each other. In the event of a manager making a debatable remark and being challenged by another manager, the bisection protocol starts working. 

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How Does Arbitrum Achieve Scalability?

The primary highlight in an Arbitrum Bridge tutorial would reflect on how it helps in achieving scalability. Any decentralized application running on the Arbitrum chain would offer the facility for the selection of validator groups to carry out the consensus mechanism. In comparison to Ethereum, the validator on the Arbitrum chain could not interact with other Arbitrum apps. With the help of such a localized technique, the Arbitrum Bridge can ensure limited connection among nodes while ensuring faster transaction processing. Subsequently, it can contribute better results in terms of scalability.

The working of Arbitrum follows the same approach as other layer 2 scaling solutions. Layer 2 or L2 scaling solutions are developed over the Ethereum blockchain, to reduce network congestion and transaction fees. Insights on working of Arbitrum Bridge MetaMask extension would showcase the limitations for scalability on Layer 1. 

For example, more approved transactions could end up compromising the security and decentralization aspects of Ethereum. In the short term, alternatives to Ethereum 2.0 become essential, and the Arbitrum bridge delivers the ideal pick. It is an L2 expansion rollup or optimistic rollup on the Ethereum blockchain. 

You must note that optimistic rollups like Arbitrum assume that all the new additions to a chain are authentic unless challenged by another user. On the contrary, ZK-rollups or zero-knowledge rollups depend on cryptographic proofs for validating every new block added to the network. ZK-rollups present significant value advantages, albeit with more complexities in comparison to optimistic rollups.

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Examples of Projects on Arbitrum

The outline of the best Arbitrum bridge projects and applications could also shed further light on the tool. Some of the notable projects using Arbitrum include Curve, Sushiswap, Synapse, Abracadabra, and AnySwap. In addition, Uniswap had recently conducted a poll among governance token holders to check whether they want to port the DEX to Arbitrum One.

Interestingly, Uniswap had planned to introduce Optimism as the layer 2 solution. However, voters expressed a different verdict as they selected Arbitrum as their choice of layer 2 solutions. On the other hand, Uniswap went with Optimism due to a lack of finality in the governance vote. It would take some time before the decentralized exchange adopts Arbitrum.

How Does the Token Bridge Work?

The discussion on “What is an Arbitrum Bridge?” would also bring the topic of the token bridge into concern. The layer 2 scaling solution of Arbitrum is referred to as Arbitrum One. On the other hand, the token bridge refers to a channel for transferring ETH and ERC-20 tokens to Arbitrum One. Any user who wants to send a particular transaction by using Arbitrum could send it to one of the contracts on the EthBridge Inbox. 

At the same time, the Outbox contract would help in accepting data from Arbitrum as the input. Subsequently, the Outbox contract adds the data to the Ethereum blockchain for reverse interaction. The public verification of EthBridge inputs and outputs can help in the identification and verification of off-chain activities. 

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Steps for Using the Token Bridge

The introductory guide to Arbitrum would also draw attention to the use of the Arbitrum token bridge for transferring ETH tokens. You must know how to use a token bridge in the Arbitrum scalability solution to reap its true benefits. Here are the important steps for transferring ETH tokens to layer 2 solutions from layer 1 networks. 

  • Make sure that you have a crypto wallet such as MetaMask, or any other wallet. Load the wallet with the necessary amount of ETH on the Ethereum main blockchain you want to transfer to a layer 2 solution through the token bridge.
  • Now, you need to add the ‘Arbitrum One’ network before your start offloading to the layer 2 solutions. Access the “” website, and you can start the journey of adding the ‘Arbitrum One’ network. 
  • Choose the Arbitrum network in the drop-down menu, associated with the “Chain’s logo.”
  • Carry out all tasks under the flow, starting with MetaMask, then moving towards Approve and adopting the Switch Network instructions.
  • Upon switching networks, you can notice the Arbitrum Bridge Metamask logo on top of the wallet. 
  • You have successfully set the Arbitrum One scalability platform and integrated it with a wallet. Access the website “” for connecting token assets and ensure that you have the wallet connected to Ethereum mainnet. 

How Can You Bridge the Tokens?

Setting up Arbitrum One does not necessarily tell you how to use Arbitrum as a reliable token bridge. You can use the following steps to ensure faster bridging of ETH tokens through the Arbitrum platform. 

  • Open Arbitrum and locate the “L1” field, where you can enter details regarding the amount of ETH/tokens users want to transfer to an L2 solution. 
  • Click on “Deposit,” followed by submitting your transaction. 
  • On the next page, the transaction would move to Arbitrum One according to the network traffic. The duration of the transfer can vary from ten minutes to an hour on the basis of network traffic. 
  • Users must also ensure seamless connectivity between the Metamask wallet and the Arbitrum One network. It ensures that the fast Arbitrum bridge does not keep you in the dark about the arrival of your funds. You can rely on your own crypto wallet for monitoring and keeping track of ETH token transfers to layer 2 networks. 

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Can You Buy an Arbitrum Token?

The functionalities of Arbitrum show that users might have some curiosity regarding Arbitrum tokens. Interestingly, Off-chain Labs, the founders of Arbitrum, do not have a native token of the Arbitrum platform. In addition, the Arbitrum founders don’t have any plans for introducing a native Arbitrum token anytime soon. The company behind Arbitrum simply didn’t want to develop another token and allows the use of any Ethereum-based cryptocurrency. Therefore, you must be careful of any Arbitrum exchange airdrop scheme which might be a scam in disguise. 

Transaction Fees on Arbitrum

The biggest problem that Arbitrum aims to solve in blockchain networks points to transaction fees. What is the mechanism for determining transaction fees with Arbitrum? Arbitrum relies on ArbGas for maintaining track of the execution costs for different transactions on the Arbitrum network. It is also important to note that all Arbitrum virtual machine instructions need an ArbGas cost. 

The cost of a specific transaction is the total amount of ArbGas fees for the instructions in the transactions in comparison to the gas limit of Ethereum. Therefore, it is evident that you do not have any specific predefined limit for ArbGas expenses. Most important of all, ArbGas is comparatively cheaper in comparison to the ETH gas fee for a specific transaction. 

The ArbGas fee helps in the compensation of chain validators for their expenses alongside verifying all instructions by the Arbitrum Virtual Machine. So, users must always ensure that the EthBridge never exceeds the layer 1 gas limit through estimates of layer 1 gas required for the EthBridge. In addition, estimating the emulation time is also significant for rollup chain throughput, as it helps in finding the speed limit of the chain. 

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Bottom Line

The introductory aspects related to Arbitrum Token Bridge and the applications of Arbitrum One show the possibilities for transforming blockchain. Ethereum has been struggling with issues with scalability due to network congestion and high transaction fees. As the introduction of layer 2 solutions brings new hope to the blockchain community, blockchain developers and users must figure out the best alternatives. The Arbitrum Bridge is an optimistic rollup, a simple scaling solution that helps in offloading transactions and data storage to layer two networks. 

The detailed overview of the Arbitrum Bridge tutorial also showed how the new L2 scaling solution offers significant ease of use. Integrate with your wallet and follow the simple on-screen instructions for transferring ETH tokens to Arbitrum One through the token bridge. Learn more about layer 2 scaling solutions and blockchain bridges to understand them in detail.

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*Disclaimer: The article should not be taken as, and is not intended to provide any investment advice. Claims made in this article do not constitute investment advice and should not be taken as such. 101 Blockchains shall not be responsible for any loss sustained by any person who relies on this article. Do your own research!