0xResearch
March 17, 2025

How Arbitrum is Pushing the Limits | Steven Goldfeder

Steven Goldfeder, co-founder and CEO of Offchain Labs, joins 0xResearch to discuss Arbitrum's recent developments, including Timeboost, interoperability solutions, and the overall L2 landscape. Goldfeder shares insights into the challenges and opportunities facing the Ethereum ecosystem, emphasizing the importance of user experience and long-term vision.

Timeboost: A Novel Transaction Ordering Policy

  • “Timeboost tries to straddle both of these worlds and give you the best of both worlds... There’s going to be a notion of an express lane... You can buy, for a short period of time, an express lane which gives you slight priority.”
  • Faster Block Times for All: Maintains Arbitrum’s fast block times (250 milliseconds) for regular users, with worst-case inclusion in the block after the next.
  • Prioritized Express Lane: Users can bid for express lane access, guaranteeing inclusion in the very next block.
  • Value Capture for the Chain: Internalizes MEV (maximal extractable value) that’s currently being externalized to cloud providers and others.

Rethinking Interoperability: It's a UX Problem

  • “I think many in the community view interop as this very, very deep, deep technical research problem. I think there’s an aspect of that, but I would actually argue that probably 90% of it is a UX problem.”
  • UX Over Deep Tech: While research is important, a seamless user experience is key to unlocking interoperability's potential. Wallets should abstract away complexities and present users with a simplified cross-chain experience.
  • Universal Intent Engine: Offchain Labs’ intent-based system, coupled with a solver loan program, aims to enable sub-3-second interoperability between participating chains.
  • Collaboration is Key: A unified, multi-party solution is crucial for broad adoption. No single team can solve interoperability alone.

The Arbitrum Advantage: Long-Term Conviction and Ecosystem Neutrality

  • “We have to have, like, very long-term convictions in what’s important and what’s not important… We didn't go very heavily after [memecoins] like other ecosystems did.”
  • Resisting Short-Term Trends: Arbitrum’s focus on fundamentals, such as DeFi and gaming, positions it for long-term success, even amidst market volatility.
  • Ecosystem Neutrality: A fair and open environment fosters competition and allows for organic growth, as demonstrated by Arbitrum’s diverse stablecoin and protocol landscape.
  • Stylus: A Sleeping Giant: This Rust, C, and C++ smart contract language unlocks significant efficiency gains, particularly for computationally intensive applications like zero-knowledge protocols.

Key Takeaways:

  • Timeboost could reshape the MEV landscape on Arbitrum, benefiting both regular users and the chain itself.
  • Interoperability hinges on improving user experience, not just on developing complex technical solutions.
  • Arbitrum’s long-term vision and commitment to ecosystem neutrality are key differentiators in the competitive L2 market.

For further insights and detailed discussions, watch the full podcast: Link

This episode explores Arbitrum's strategic positioning within the evolving L2 landscape, focusing on the Time Boost proposal, interoperability challenges, and the balance between short-term trends and long-term vision in the Ethereum ecosystem.

1. Arbitrum's Recent Developments & Pillars

  • Arbitrum Stylus: Enables developers to write smart contracts in Rust, C, and C++ alongside Solidity (EVM), fostering application composability.
  • Bold: A recently launched challenge protocol on mainnet, Bold opens up validation on Arbitrum chains to everyone, enhancing security through permissionless participation.
  • Time Boost: A new transaction ordering policy proposal, currently under DAO voting, aims to balance fast block times with MEV (Maximal Extractable Value) internalization.

Goldfeder emphasizes a focus on contributing to Arbitrum and Ethereum development, highlighting the rollup-centric roadmap and interoperability efforts. He states, "We've been working a lot on interoperability... I think a lot of it is a narrative problem, but there's also obviously some technical truth to it."

2. Deep Dive into Time Boost

  • Current Sequencer Policies: Goldfeder explains existing sequencer policies: first-come, first-served (Arbitrum's current approach) and MEV auctions (prioritizing highest bidders).
  • The Problem with First-Come, First-Served: MEV searchers currently externalize value by paying cloud providers for faster access to the sequencer, bypassing the chain.
  • Time Boost Solution: Introduces an "express lane" where users can bid for priority inclusion in the next block, while regular users still experience fast block times (potentially delayed by one block).
  • Private Mempool Preservation: Time Boost maintains Arbitrum's private mempool, preventing front-running and ensuring fairness for regular users.

Goldfeder highlights the healthy debate around Time Boost, acknowledging concerns about its novelty while emphasizing its unique value proposition. He mentions, "It's a new system that kind of deviates from... the priority fee like systems that others are using today."

3. Interoperability: UX and Technical Challenges

  • User Perception: Many users perceive L2s as complex, despite easy onboarding through exchanges like Coinbase and Binance.
  • Universal Intent Engine: Offchain Labs' solution for sub-3-second interoperability between participating chains (initially five), using intent-based bridging and a Solver Loan Program to incentivize liquidity.
  • Wallet-Level Abstraction: Goldfeder stresses the need for wallets to abstract away the complexities of cross-chain interactions, allowing users to seamlessly trade assets across different chains.

He dismisses real-time proving as a crucial interop solution, arguing that L1 finality (which takes 12-18 minutes) is the ultimate requirement for trustless cross-chain transactions. "What you really need is finality, and it turns out that L1 finality is not something we can do in real time."

4. Wallet Abstraction and Collaboration

  • Multi-Party Solution: Interoperability requires a collaborative approach, involving multiple parties and avoiding walled-garden solutions.
  • Partnership with Espresso Systems: Highlights the importance of working with neutral parties to create an interoperability stack for the broader Ethereum ecosystem, not just Arbitrum.
  • Bias Towards Action: Goldfeder emphasizes the need for immediate solutions, stating, "I don't want to spend a year writing the absolute best spec... I want to say hey, this is what works today, we're building this right now."

5. Ethereum's Future and Enshrined Primitives

  • Rollup-Centric Roadmap: Allows execution innovation to happen within rollups, while Ethereum focuses on core improvements like pre-compiles.
  • Diversity and Experimentation: Goldfeder values the diversity of core development teams in Ethereum, contrasting it with ecosystems dominated by one or two teams.
  • Historical Perspective: Recalls the early days of Offchain Labs, when rollups were not yet a concept, and State Channels/Plasma were considered the only scaling solutions.

He emphasizes the importance of allowing innovation to flourish, stating, "The only way that we know that Ethereum will be safe in the future... is if we allow that innovation to happen."

6. Balancing Security and Innovation in Ethereum

  • Layered Architecture: Enables innovation in different layers without dependencies, allowing the consensus client layer to move slowly while execution layers (like Arbitrum) evolve rapidly.
  • Rollup-Centric Roadmap Benefit: Allows for execution changes within rollups without requiring system-wide changes, fostering both stability and rapid progress.

7. DYDX's North Star and Outlook

  • North Star Metric: Number of active traders, prioritizing accessibility and broader user adoption over pure trading volume.
  • 2025 Outlook: Focus on quality and novel product development, aiming to diverge from traditional exchange models and leverage web3's unique capabilities.
  • Crypto's Potential: Expresses excitement for crypto's potential to branch out beyond trading and become a significant part of people's daily lives.

8. Competing in the L2 Landscape

  • Long-Term Convictions: Goldfeder emphasizes the importance of long-term vision and not being swayed by short-term trends like meme coin cycles.
  • Arbitrum's Strengths: Highlights Arbitrum's resurgence in DeFi volume, its focus on real-world assets (RWAs) and gaming, and its commitment to neutrality and fairness.
  • Stablecoin Adoption: Mentions USDT's expansion with Arbitrum as a hub and upcoming announcements regarding new stablecoin adoption.

He states, "We have to have like very long-term convictions and what's important and what's not important."

9. Arbitrum Governance and Alignment

  • Differentiating Roles: Emphasizes the need to distinguish between Arbitrum-aligned entities and service providers, advocating for a clear conflict of interest policy.
  • Alignment and Incentives: Stresses the importance of ensuring that those making strategic decisions in the DAO are aligned with Arbitrum's success.
  • Neutrality and Fairness: Highlights Arbitrum's historical commitment to neutrality and providing a fair environment for all applications, regardless of size or established status.

"I want everyone that's making decisions to want Arbitrum to win and to be aligned for that outcome."

10. Native vs. Multi-Chain Ecosystems

  • Both/And Approach: Goldfeder believes in supporting both native Arbitrum projects and multi-chain protocols, recognizing the importance of both for Arbitrum's success.
  • Uniswap Example: Highlights Uniswap's significant volume on Arbitrum, demonstrating the importance of Arbitrum for even multi-chain behemoths.
  • Incentivizing Innovation: Emphasizes the need to make Arbitrum an attractive home for new projects, fostering innovation and preventing Arbitrum from becoming solely a chain for established protocols.

11. Future Initiatives and Upgrades

  • Stylus as a Sleeping Giant: Sees potential for Stylus to drive innovation in areas like on-chain dark pools (Renegade Finance example) and as a scaling solution for computationally expensive applications.
  • Time Boost Monitoring: Encourages monitoring the Time Boost vote and its potential impact on MEV markets.
  • Ecosystem Development: Reiterates Arbitrum's long-term commitment to DeFi, TradFi, RWAs, and gaming, even if these areas are not currently the most popular trends.

"Stylus is definitely still a sleeping giant today."

The episode underscores the critical need for L2s like Arbitrum to balance short-term market dynamics with a long-term strategic vision. Crypto AI investors and researchers should closely monitor Arbitrum's developments in interoperability, governance, and application-layer innovation (particularly Stylus), as these factors will significantly shape Arbitrum's competitive positioning and the broader Ethereum ecosystem's evolution. The key takeaway is to focus on projects with long-term utility and vision, rather than short-term hype.

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