A former White House technology advisor and two Princeton researchers looked at Ethereum's 15-transactions-per-second limit and said: we can fix that. Arbitrum processes thousands of transactions per second at a fraction of the cost, settles everything on Ethereum for security, and has more total value locked than any other Layer 2. The ARB airdrop in 2023 distributed billions of dollars in tokens to early users. If Ethereum is the highway, Arbitrum built the express lane. The question is whether there is room for 10 express lanes or if winner-takes-most dynamics apply. So far, Arbitrum is winning.
Founded
2018
HQ
New York, New York (Offchain Labs)
Total Raised
$123.7 million
Founder
Ed Felten, Steven Goldfeder, Harry Kalodner
Status
Decentralized protocol (ARB token, Arbitrum DAO governance)
Website
arbitrum.ioTHE ORIGIN STORY
Ed Felten (former White House Deputy CTO under Obama), Steven Goldfeder, and Harry Kalodner — all Princeton researchers — founded Offchain Labs in 2018 to solve Ethereum's scalability problem. Ethereum could only process roughly 15 transactions per second, which was not enough for mainstream adoption.
Arbitrum launched in August 2021 and quickly became the most popular Layer 2 solution. Within months, it had more total value locked than any competing L2.
The ARB governance token was airdropped in March 2023 — one of the largest airdrops in crypto history.
WHAT THEY ACTUALLY DO
Arbitrum is a Layer 2 scaling solution for Ethereum — it processes transactions off the main Ethereum chain, making them faster and cheaper, then settles them back on Ethereum for security. Think of it as an express lane for Ethereum.
Users pay a fraction of the gas fees they would on Ethereum mainnet. Arbitrum uses "optimistic rollup" technology.
The protocol generated over $60 million in sequencer revenue in 2023. Offchain Labs (the company behind Arbitrum) also launched Orbit — a toolkit for anyone to create their own Layer 3 chains on top of Arbitrum.
THE PRODUCTS
Arbitrum One (main L2 rollup), Arbitrum Nova (high-throughput chain for gaming), Arbitrum Orbit (custom chain toolkit), Stylus (multi-language smart contract support)
HOW THEY GREW
Become the default Layer 2 ecosystem. Arbitrum is not just a single chain — Orbit lets anyone launch custom chains on top of Arbitrum, creating a network of interconnected L2s and L3s.
Major projects like GMX (decentralized perpetuals), Treasure (gaming), and Camelot (DEX) have built on Arbitrum. The strategy: win the developer ecosystem war.
THE HARD PART
Competition from other L2s. Optimism, zkSync, StarkNet, and Base (Coinbase) are all competing for the same market.
The technology is converging — optimistic rollups and ZK rollups are becoming more similar. Arbitrum needs to maintain its developer ecosystem and TVL lead as competitors catch up technically.
The long-term question: will there be one dominant L2 or many coexisting ones?
MONEY TRAIL
Series A
2021 · Led by
$20M raised
Series B
2021 · Led by
$120M raised
Token
2023 · Led by
$0 raised
WHO BACKED THEM
Lightspeed Venture Partners, Polychain Capital, Pantera Capital, Mark Cuban, Coinbase Ventures
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