The Defiant - DeFi Podcast

Arbitrum Uncovered: Steven Goldfeder on Ethereum L2s, Rollups, and the Future of DeFi

Jul 11, 2025
Steven Goldfeder, co-founder and CEO of Offchain Labs, shares insights on Arbitrum's success as a leading Ethereum Layer 2 solution. He discusses his journey from academia to pioneering blockchain, emphasizing the role of optimistic rollups in enhancing Ethereum's scalability. AJ Warner highlights the exciting partnership with Robinhood and the seamless integration of Arbitrum's technology. The duo engages in intriguing debates about ZK and optimistic rollups, the future of decentralized finance, and how Ethereum's Layer 2 solutions can significantly bolster the ecosystem.
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ANECDOTE

Steven's Early Crypto Journey

  • Steven Goldfeder first heard about Bitcoin in 2013 during his PhD at Princeton when a professor gave a talk on it.
  • Later, he co-founded Offchain Labs to build Arbitrum, inspired by research started as an academic project at Princeton.
INSIGHT

How Rollups Scale Ethereum

  • Rollups scale Ethereum by running computation off-chain and submitting proofs on-chain.
  • The key difference between optimistic and ZK rollups is the type of proof used to validate results on Ethereum.
INSIGHT

Arbitrum's Tech Philosophy

  • Arbitrum chooses the best technology available rather than committing permanently to optimistic rollups.
  • Steven envisions a hybrid approach merging optimistic and ZK proof advantages for Ethereum scaling.
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