stablecoin inflows looking good for the programmable economy
Arbitrum
Ethereum optimistic rollup securing over $12B with ~0.25-second block times and Stylus Rust contracts
4.2/ 5
Our score
Very good
Layer
Layer 2
Consensus / design
Optimistic rollup
Native token
ARB
Block time
~0.25 seconds
EVM compatible
Yes
What is Arbitrum?
Arbitrum is an Ethereum Layer-2 optimistic rollup suite anchored by its flagship network, Arbitrum One. Built on Nitro technology developed by Offchain Labs, the network scales Ethereum transactions offchain while settling fraud proofs directly on Ethereum L1. By mid-2026, Arbitrum One secured over $12.3 billion in total value across its ecosystem.
Founding and backing
The network was founded in 2021 by Steven Goldfeder and is built by Offchain Labs. Backers include Coinbase Ventures, IOSG Ventures, OKX Ventures, ParaFi Capital, and Standard Crypto. Protocol governance operates through the Arbitrum DAO.
How the network operates
Arbitrum processes transactions using an offchain sequencer with block times around 0.25 seconds. Gas fees are settled in ETH. The platform provides full EVM compatibility and includes Arbitrum Stylus, an execution environment allowing developers to deploy contracts written in Rust, C, and C++ alongside standard Solidity contracts. In addition to Arbitrum One, the ecosystem includes Arbitrum Nova, an AnyTrust chain designed for low-cost social and gaming transactions, and the Arbitrum Orbit framework, which enables developers to deploy dedicated Layer-2 and Layer-3 chains under the Arbitrum Expansion Program.
Ecosystem economics and track record
Third-party Orbit networks deployed under the Arbitrum Expansion Program contribute 10 percent of net protocol revenue to the ecosystem, with 8 percent going to the DAO treasury and 2 percent to the Arbitrum Developer Guild. In July 2026, Robinhood Chain launched on mainnet under this program. Across the first half of 2026, the Arbitrum DAO generated $6.19 million in revenue with gross margins above 97 percent. By mid-2026, Arbitrum had processed 478 million transactions in six months, reaching 2.7 billion lifetime transactions.
Risks and technical limitations
Arbitrum relies on a centralized sequencer model to process and order transactions, presenting a single point of failure for real-time transaction ordering. In addition, staking ARB through the DAO's stARB framework does not distribute protocol fees directly to holders. Token unlock schedules also introduce circulating supply pressure, with roughly 19.5 percent of the total ARB supply remaining non-circulating going into late 2026.
Founders
Steven GoldfederFounder
Holds a PhD in computer science from Princeton University and co-founded Offchain Labs.
Ed FeltenCo-founder
Professor of computer science and public affairs at Princeton University and former Deputy U.S. Chief Technology Officer.
Harry KalodnerCo-founder
PhD candidate in computer science at Princeton University specializing in blockchain security.
Best for:High-frequency DeFi tradersRust and Solidity smart contract developersTeams launching dedicated Orbit appchains
Pros and cons
Pros
- Secured over $12.3B in value with 2.7 billion lifetime transactions by mid-2026
- Supports smart contracts in Rust, C, and C++ alongside standard EVM Solidity
- Fast sub-second block times around 0.25 seconds with gas settled in ETH
Cons
- Sequencer remains centralized, creating liveness and transaction ordering dependencies
- ARB staking through the DAO does not distribute protocol fee revenue to holders
- Substantial non-circulating ARB supply remains subject to scheduled token unlocks
Our review
4.2/5
Very good
Arbitrum supports DeFi applications on Ethereum, but ARB staking distributes no protocol fees.
Arbitrum operates as an optimistic rollup scaling Ethereum, processing transactions offchain before posting bundled batches to Layer 1. Built on Offchain Labs' Nitro technology, the network executes transactions with roughly 0.25-second block times. Gas fees on Arbitrum One are settled in ETH, while maintaining EVM compatibility. Developers can deploy unmodified Solidity contracts or write in Rust, C, and C++ via the Stylus multi-VM environment.
Ecosystem adoption remains Arbitrum's primary advantage. By mid-2026, the network logged 2.7 billion lifetime transactions, with 478 million settled in the first half of 2026 alone. DeFi protocols including GMX, Uniswap, Aave, and Camelot anchor its liquidity, while external rollups like Robinhood Chain deploy through the Arbitrum Orbit framework. Orbit chains contribute directly to the DAO treasury under an Expansion Program licence, which routes 10% of net protocol revenue back to the network, split between the treasury (8%) and the Developer Guild (2%). In the first half of 2026, the Arbitrum DAO booked $6.19 million in net revenue at gross margins above 97%.
Several trade-offs affect users and token holders. Centralized sequencer operation highlights operational dependencies. Governance rights belong to the ARB token, but the ARB staking infrastructure finalized in 2024 deliberately left protocol fee distribution inactive, meaning stakers receive no direct revenue share. ARB token supply dynamics include scheduled unlocks, with roughly 19.5% of the supply non-circulating as of late 2026 across recurring release cliffs.
Arbitrum suits DeFi traders seeking low transaction costs and deep liquidity, as well as smart contract developers targeting multi-language runtimes.
Sources (2)
Specs
| Layer | Layer 2 |
|---|---|
| Consensus / design | Optimistic rollup |
| Native token | ARB |
| EVM compatible | Yes |
| Smart contract languages | Solidity, Rust (Stylus) |
| Block time | ~0.25 seconds |
| Finality | ~7 days (dispute window) · unverified |
| Mainnet since | 2,021 · unverified |
| Sequencer | Centralized · unverified |
| Data availability | Ethereum L1 calldata / EIP-4844 blobs · unverified |
| Gas paid in | ETH · unverified |
Not disclosed by the provider: Typical transaction fee, Validators / sequencer, Throughput (TPS).
Data from the provider's website and public sources. Fees and availability change; confirm on the official site before you sign up.
Key features
Arbitrum One rollup
The core Layer-2 optimistic rollup settles batches on Ethereum, processing transactions with block times around 0.25 seconds using ETH for gas fees.
Arbitrum Stylus execution
Stylus provides a multi-VM environment that executes smart contracts written in Rust, C, and C++ alongside standard EVM Solidity contracts.
Arbitrum Nova
A specialized AnyTrust chain that routes data availability through an offchain committee to reduce gas costs for gaming and social applications.
Arbitrum Orbit deployments
Orbit allows teams to launch custom L2 or L3 rollup chains, sharing 10% of net protocol revenue with the Arbitrum DAO and Developer Guild.
Timeboost transaction ordering
A sequencer mechanism that allows users to pay an optional priority fee for faster transaction inclusion.
Inside Arbitrum
Arbitrum One
The primary Layer-2 optimistic rollup that hosts DeFi applications and smart contracts with settlements posted directly to Ethereum.
Arbitrum Nova
A specialized Layer-2 chain using AnyTrust technology to provide ultra-low transaction costs for gaming and social apps.
Arbitrum Stylus
A multi-VM execution environment that lets developers deploy smart contracts written in Rust, C, and C++ alongside standard Solidity EVM code.
Arbitrum Orbit
A deployment framework enabling developers to launch custom Layer-2 and Layer-3 rollup chains that can license Arbitrum technology and route revenue back to the DAO.
What users say about Arbitrum
User inquiries include questions regarding transaction history export details and bridging tokens between networks.
Based on 3 Reddit posts and comments from the last 12 months, checked Oct 20, 2026. These are posts by users on other sites, not reviews submitted on CryptoReview.
User reviews
No user reviews yet. Have you used Arbitrum? Share your experience below.
Funding and investors
$143.7MTotal raised
2Rounds
5Investors
-
Series B Aug 2021 $120M
-
Funding round Amount undisclosed
FAQ
Who founded Arbitrum?
Arbitrum was founded in 2021 by Steven Goldfeder alongside the team at Offchain Labs. The network operates under decentralized governance via the Arbitrum DAO.
What token does Arbitrum use for gas and governance?
Arbitrum uses ETH to pay for transaction gas fees on Arbitrum One. ARB is the network's native governance token, and holders use it to vote on Arbitrum DAO proposals.
Do ARB stakers earn protocol fee distributions?
No, ARB token holders receive no fee share from the protocol. While the DAO finalized staking infrastructure and the stARB liquid staking token in August 2024, fee distribution remains disabled.
What is the difference between Arbitrum One and Arbitrum Nova?
Arbitrum One is the flagship rollup used for DeFi and general smart contracts with data posted directly to Ethereum. Arbitrum Nova relies on AnyTrust technology to cut transaction costs further for gaming and social applications.
Latest from Arbitrum on X
This week on Arbitrum:
The programmable economy train is full steam ahead
> Tokenized funds reach $1.1B in market cap with issuers @Spiko_finance, @FTDA_US, @Securitize and more leading growth
> More than $56M of @FTDA_US’s BENJI money market fund is now on Arbitrum
> $USDG lending TVL on @Morpho reaches $140M+ on Arbitrum
> ArbiVerse kicks off November 2nd in Mumbai with talks on Arbitrum's growth, advancements, founder support programs and more - apply today
> Applications for Arbitrum’s Stablecoin Growth Program are now open - bring $USDG to your lending, yield, AMM, or payments app on Arbitrum and get performance-based incentives and a shot at 2M ARB prize pool
> @rolly_onchain launched on Arbitrum One
> @Pumpfun is now live on Arbitrum enabling users to trade any Arbitrum token
> @variational_io hit an all-time high of $448B in cumulative trading volume across RWA and crypto markets
> @AquaZero0 drops it’s season 0 with rewards claimed in $USDG on Arbitrum
> @Dolomite_io now supports $USDG on Arbitrum allowing users to supply, borrow or use it as collateral
The programmable economy train is full steam ahead
> Tokenized funds reach $1.1B in market cap with issuers @Spiko_finance, @FTDA_US, @Securitize and more leading growth
> More than $56M of @FTDA_US’s BENJI money market fund is now on Arbitrum
> $USDG lending TVL on @Morpho reaches $140M+ on Arbitrum
> ArbiVerse kicks off November 2nd in Mumbai with talks on Arbitrum's growth, advancements, founder support programs and more - apply today
> Applications for Arbitrum’s Stablecoin Growth Program are now open - bring $USDG to your lending, yield, AMM, or payments app on Arbitrum and get performance-based incentives and a shot at 2M ARB prize pool
> @rolly_onchain launched on Arbitrum One
> @Pumpfun is now live on Arbitrum enabling users to trade any Arbitrum token
> @variational_io hit an all-time high of $448B in cumulative trading volume across RWA and crypto markets
> @AquaZero0 drops it’s season 0 with rewards claimed in $USDG on Arbitrum
> @Dolomite_io now supports $USDG on Arbitrum allowing users to supply, borrow or use it as collateral
Over the next five years on the Arbitrum Platform:
> Robinhood Chain continues to grow its stock token business
> Dozens of teams build success stories in their own verticals
> Each contributes revenue back to the ArbitrumDAO
Robinhood Chain is just the first of many https://t.co/CuZQVN8uax
> Robinhood Chain continues to grow its stock token business
> Dozens of teams build success stories in their own verticals
> Each contributes revenue back to the ArbitrumDAO
Robinhood Chain is just the first of many https://t.co/CuZQVN8uax
The Arbitrum Security Council has taken emergency action to rescue the 74,559,805 ARB and 8,425 ETH being held in the address on Arbitrum One that is identified as connected to the Binance exploit. The Security Council acted by weighing its commitment to the security and integrity of the Arbitrum community and Arbitrum governance without impacting any Arbitrum users or applications.
After significant technical diligence and deliberation, the Security Council identified and executed a technical approach to move funds to safety without affecting any other chain state or other Arbitrum users.
As of October 30, 2026 time, the funds have been successfully transferred to an intermediary frozen wallet. They are no longer accessible to the address that originally held the funds, and can only be moved by further action of the Security Council or a vote of Arbitrum DAO governance, which will be coordinated with relevant parties.
After significant technical diligence and deliberation, the Security Council identified and executed a technical approach to move funds to safety without affecting any other chain state or other Arbitrum users.
As of October 30, 2026 time, the funds have been successfully transferred to an intermediary frozen wallet. They are no longer accessible to the address that originally held the funds, and can only be moved by further action of the Security Council or a vote of Arbitrum DAO governance, which will be coordinated with relevant parties.
Arbitrum Autumn is in full swing 🍂
Meet the newest teams growing the programmable economy on Arbitrum:
> @Paxos and @global_dollar
> @Pumpfun
> @GenLayer
> @aeroxyz
> @fhenix
> @functionspaceHQ
> @rolly_onchain
> @keeper_wallet
> @equitylayer
> @isometricfi
> @symbiosis_fi
> @alloxdotai
> @DptPay
> @twynexyz
Onwards to November
Meet the newest teams growing the programmable economy on Arbitrum:
> @Paxos and @global_dollar
> @Pumpfun
> @GenLayer
> @aeroxyz
> @fhenix
> @functionspaceHQ
> @rolly_onchain
> @keeper_wallet
> @equitylayer
> @isometricfi
> @symbiosis_fi
> @alloxdotai
> @DptPay
> @twynexyz
Onwards to November
Recent public posts from @arbitrum, shown as published. Not reviewed or endorsed by CryptoReview.
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