Offchain Labs

We just dropped episode 4 of Core Notes from Core Devs! In this episode, we sit down with our Ethereum core developers to dive into the most recent updates and insights in Ethereum development. Today, we’re joined by Emmanuel and ???? James He, who share their lessons from navigating tough challenges as Ethereum Core Developers and offer thoughtful advice to their younger selves. Hosted by David Chen—tune in now for an inside look at the world of Ethereum innovation!

Excited to reveal Onchain Labs! While we continue to innovate on scaling infrastructure, today, we’re also focused on empowering the Arbitrum application layer. We’ve generated many ideas for game-changing applications but recognize that we cannot build all of these ourselves. Through Onchain Labs, we’re dedicating resources to support developers who want to rapidly expand the application layer by ideating with them from the ground up, bringing the best user experiences to Arbitrum. There’s one thing that we won’t compromise on: Fair launches only. The extractive, zero-sum game that we’ve seen across crypto is simply not what this technology should be about. We believe in shared success and community alignment. Please note that Onchain Labs projects are experimental and can be very volatile. Users are encouraged to do their own research before purchasing any related tokens. The first projects will emerge from stealth soon. Talented teams looking for support can apply through our form. Excited to further contribute to the Arbitrum ecosystem. ?? Read more here: https://lnkd.in/eErA6bsz Apply here: https://lnkd.in/eAcPfv7U

What does Ethereum interoperability look like for both Arbitrum and Ethereum blockchains? Listen in with Spencer H. from our Product team and hear how we’re bringing Ethereum interoperability to users, developers, and solvers across all EVM chains with the Universal Intents Engine. ?? Read more about it here: https://lnkd.in/ez8abSBJ

Calling all Developer Relations people! We're seeking an energetic and ambitious Lead Developer Relations passionate about building and supporting developer communities to join our team and lead our 0-1 developer experience growth on Arbitrum. You will be working alongside our team internally and builders in the ecosystem to solve challenges involved in using and integrating with Arbitrum technology and accelerating their development. If you're looking to kick-start your journey in one of the most innovative and vibrant ecosystems on Ethereum, apply today! https://lnkd.in/ergEHxmE

#RaylsWebinar | Rayls x Arbitrum - Scaling blockchain for finance ????? ? Join us for an exclusive webinar diving into the integration between Rayls and Arbitrum, exploring how this collaboration is shaping the future of blockchain solutions for financial institutions.? ? ??? Hosted by Peter Bidewell, Head of Product at Parfin*, featuring:? ? ?? Alex B., CPTO and Co-Founder at Parfin*? ?? Austin Ballard , Associate Partnerships Manager at Offchain Labs? ? *Parfin is the first core developer of Rayls? ? Key discussion points:? ? ? Why Rayls chose Arbitrum Orbit as its Layer 2 solution? ? How this integration enhances scalability, privacy, and institutional adoption? ? The future of TradFi and DeFi, and how we’re building the UniFi vision together? ? This is a must-watch for blockchain enthusiasts, financial leaders, and developers looking to understand how real-world finance is moving on-chain.? ? ?? Save the date & join us live!?#Webinar #live #linkedinlive

We want a unified Ethereum and we’re making it happen. This means we want Ethereum to feel like one platform where anyone can have a seamless experience regardless of which EVM blockchain users are interacting with, and we believe the technology is there to make this a reality. Hear from our Co-Founder and Chief Scientist Ed Felten how the Universal Intents Engine can solve fragmentation and bring seamless UX experience to both Arbitrum and Ethereum blockchains.

In a joint work with Ben Berger, Ph.D., Ed Felten and Benny Sudakov, we study censorship attack during a challenge protocol of an optimistic rollup. Block proposers, who control transaction inclusion on base layer, can be bribed by an adversary to exclude honest party's transactions. The challenge period gives the defender an edge, as the attacker must censor continuously while the defender only needs to succeed a few times, potentially exhausting the attacker's resources. The study models this as a multi-round strategic game between the attacker and the defender, analyzing three variants based on the number of proposers and their behavior. Each variant is parameterized by the number of total rounds/blocks, required wins for an honest party, and budgets, aiming to determine the budget ratios needed for victory of honest party. The simplest variant assumes a single, myopic proposer per round, which conducts an auction won by the highest bidder. This yields a linear budget inequality for victory. The second variant introduces "special rounds" where the attacker must outbid the defender by a factor of k, reflecting Ethereum's default inclusion policies, increasing censorship costs. The third variant involves multiple proposers, where the defender wins if at least one includes its transaction, raising the attacker's required budget significantly. Namely, the increase is asymptotically equal to a number of proposers. The paper identifies optimal and near-optimal strategies, offering insights into extending optimistic rollup security against such attacks. For details check out the paper: arxiv.org/pdf/2502.20334 and research forum post: https://lnkd.in/drBJHPGn. Any feedback is welcome.

At Tandem by Offchain Labs, we support projects that solve key challenges in the Web3 space. One such team is Xai Games, a gaming-focused blockchain built with Arbitrum technology that tackles some of the most difficult challenges related to scalability and performance in blockchain gaming. Xai’s mission is to onboard the next billion gamers into web3. Seamless, low-cost, and scalable gaming experiences are needed to achieve this. The Xai team partnered with Offchain Labs and customized Arbitrum technology to enable a tailored, efficient blockchain environment for gaming. This collaboration ensured that every technical challenge was met with a strategic solution. The result? - High throughput for uninterrupted gameplay. - EVM compatibility, making development easier for teams. - Scalability and flexibility for future growth. But the results aren’t just technical. More recently, the team revealed that over 40,000 PC games are coming to Xai, opening the door for over 100,000,000 PC users to join the Xai network. Xai’s success is evidence that with the right tech, the proper support, and strong collaboration, ambitious blockchain projects can not only scale but thrive. Interested in learning more about how Tandem can help bring your blockchain vision to life? Reach out today to discuss potential partnership opportunities!

Our 3rd day at #ETHDenver is here, and we have an awesome lineup packed with speakers from our team! ?? Altlayer Agentic Crypto Day with Ed Felten - 11:00am - 5:00pm MST Our Co-Founder and Chief Scientist Ed will be talking about what does AI need from blockchain and how we can provide it. Register Here: https://lnkd.in/gjK8WdVH ?? Proof Point and Aggregation Day with Matt Pearring - 12:00pm and 2:00pm MST Matt from Product will be talking about modularity and interoperability with L2s Register Here: https://lu.ma/pl8me76j ?? Zeeve's Rollup and Appchain Day with Cooper Midroni - 1:30pm - 1:50pm MST Cooper from our Product team will be talking about emerging trends and what's coming for rollups and appchains in 2025. ?? AI Hype(r)House and AiFi Summit Denver with Chase Allred - 11:00am - 11:00pm MST Hear from Chase from Partnerships and learn about Decentralized Finance and how AI is powering the next revolution of DeFi apps and much more! Register Here: https://lu.ma/hyperhouse ?? Ethereum Denver Conference with Chris Cordle - 11:00am - 5:00pm MST Catch Chris from our Integration Engineer team at the BUIDL Squad Stage! He will be talking all about Zigitrum: Fast and Simple Smart Contracts in Zig. Register Here: https://t.co/hcOXnC7dYb ?? Cantina x Ethereum Foundation Hacker House with Terence Terence will be giving a code walkthrough, joining a Q&A panel on Ethereum, and much more! Register Here: https://lnkd.in/ejCZGP7f We will also be at Arbitrum's ArbiBurger event throughout the day! We're very excited to meet with all the builders! See everyone there!

?? Ringing The Bell For All Builders??? We’re Hiring Engineers at Offchain Labs ?? February is already over and we’re just getting started ?? If you're an expert in Golang, Rust, Solidity, or Kubernetes and enjoy finding big solutions for big problems, then why aren’t we talking?! We have huge goals and initiatives and looking for top tier talent searching for their next ??? to scale Multiple open roles for multiple hires across multiple teams ?? Feel free to apply at the link below ???Golang Engineer ???Rust Engineer ???Blockchain Engineer, Smart Contracts ?? Site Reliability Engineer ?? QA Lead If you’re heading to ETHDenver, we’ll be there. Reach out to Justin Kinging and Kyle DeValdivielso If you’re heading to your desk, DM me for questions Tag someone who would love to see this post Like or reshare to expand reach??? LinkedIn Community, you rock! Thank you for your support ?? Please let me know how I can return the favor. Whether it is an intro, career advice, interview tips or resume review, I'm here!