Arbitrum is an Ethereum Layer 2 scaling network that processes transactions off the main chain while inheriting Ethereum's security model. Built as an optimistic rollup, it batches transactions and posts compressed data back to Ethereum, which significantly reduces gas costs while preserving a development environment that closely mirrors Ethereum's. Arbitrum hosts one of the largest Layer 2 ecosystems by total value locked, supporting a wide range of decentralized applications, including decentralized exchanges, perpetual trading platforms, lending protocols, and liquid staking services. The ARB token functions as the governance token of the Arbitrum DAO. Holders can vote on proposals that shape the protocol's direction, including technical upgrades, treasury allocations, and parameter changes. The token is deployed on Ethereum and serves as the primary coordination mechanism for the Arbitrum community, which also includes the Arbitrum Nova chain designed for cost-sensitive applications. As one of the flagship Ethereum scaling projects, Arbitrum is positioned within the broader Ethereum and smart contract platform landscape, with backing from a number of notable crypto investment firms.
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Optimistic rollups still dominate the L2 stack, but aggregate TVL is back to early-2023 levels, suggesting capital rotation out of L2s while Ethereum mainnet holds the bid.
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A mainnet live since July 1 is already generating around $25M a week, putting Robinhood Chain alongside established L1s and validating its Arbitrum-based L2 bet.
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The Arbitrum bridge itself held, but five hot-validator signatures cleared the quorum on a third-party bridge and let the attacker walk away with the protocol's entire TVL.
Blockaid flags the loss to a third-party bridge, not Arbitrum's native one, and Offchain Labs says the core bridge is unaffected while it investigates.
The attacker bridged the stolen stablecoin to Ethereum and swapped into 12,467 ETH before the team could respond, a textbook cross-chain drain pattern.
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The brokerage-backed L2 lands with Alchemy, Chainlink, and LayerZero already wired in, framing the launch as a TradFi bridge rather than a generic EVM clone.
Regulatory deadlines, macro releases and governance votes converge as exchange spot volume rebounds and RWA perpetual trading reaches a record.
The pitch stitches together Robinhood's Arbitrum-built L2, BlackRock and JPMorgan tokenization work, and a ~6,000-developer bench into an Amazon/Nvidia 1.0-to-2.0 analog that prices ETH at $25K to…
Coinbase is restructuring Base around trading, payments and tokenized assets after losing ground to Robinhood's new layer-2, whose first $3.1B week was 80% memecoin trading.
The chain now sits behind only Solana and BNB in 24-hour on-chain trading volume, ahead of Base, Ethereum, Hyperliquid and Arbitrum.
L2Beat called the project "clearly absurd" and flagged the token as "heavily manipulated," yet RAIN still ranks as Arbitrum's largest TVS asset at roughly $2.6B, above USDC and ETH.
Where Zipp's editorial desk has weighed in on this token.
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Arbitrum is one of the leading Ethereum scaling solutions bringing cheap transactions to tens of thousands of users in an environment that feels very similar to Ethereum.
Arbitrum (ARB) is categorised as: Smart Contract Platform, Arbitrum Ecosystem, Ethereum Ecosystem.
The official Arbitrum site is https://arbitrum.io/.
Most recent Arbitrum coverage: "CoinMarketCap Holds Top 10 as MON, FET Enter Top 100" — read at /en-US/a/coinmarketcap-holds-top-10-as-mon-fet-enter-top-100.
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