Technical resource hub for all @arbitrum developers. Tutorials, updates, and technical announcements.

PGA + Fast Feed are now live on Arbitrum One. PGA enables priority fees for earlier execution, while Fast Feed gives subscribers faster access to ordered sequencer data. Here’s how they unlock new opportunities for traders & DeFi 👇
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How Arbitrum’s New Ordering Mechanism Creates More Opportunities for Traders & DeFi Primitives

Blockchains lack native CRON jobs or automated triggers, so when market conditions change, like when a token price moves on one exchange and not another, DeFi’s stability relies on having economic

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Arbitrum Developers retweeted
Arbitrum's Elara upgrade just shipped bigger contract limits and new tooling for orbit chains, and ecosystem activity is climbing with it. The programmable economy is growing, and with more builders, means more demand on your RPC. Start building on the @arbitrum platform now.
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Arbitrum Developers retweeted
Crypto World's Fair livestreams continue tomorrow at 10am PDT with @0xjesstech from the @Arbitrum Foundation. Join the workshop "Find Your Wedge with Arbitrum, in collaboration with Robinhood Chain" on our Discord server.👇 discord.com/events/127374346…
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We’re excited to support builders in the Arbitrum and Robinhood Chain tracks at @colosseum Top teams will be: > Invited to our in-person Founder House Singapore, hosted in collaboration with Robinhood Chain (Oct 23–25) and compete for $300K in prizes & grants > Advanced to the final interview round for the 2nd Cohort of our Mentorship Program (to be announced soon) > Connected with our DevRel + Ecosystem teams through workshops and dedicated founder support Colosseum builders - join us for a shot at these opportunities 👇 luma.com/openhouse-singapore…
1/ Crypto World's Fair has commenced! 🎡 🌍Our online hackathon is open to builders & founders across blockchain ecosystems 💰Over $800k in total prizes and $2.5 million from Colosseum's venture fund 🏁Product submissions due by October 12, 2026 Join: colosseum.com/worldsfair
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Hello! Nitro v3.12.0 is now available on Docker Hub as a stripped, binary only release. Docker image: offchainlabs/nitro-node:v3.12.0-ebe9e83-stripped As usual, we recommend node operators for any Arbitrum chain (incl. Robinhood and Arbitrum One) upgrade to this version to stay up to date. Like our last few releases, the source code and full release will follow in the coming business days. If you maintain a fork and would rather wait for the full release, you may choose to do so. This is a node software release only: it does not involve chain consensus changes, and nodes on the current version will continue to sync normally in the meantime. We'll share an update as soon as the full version is published.
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Arbitrum Developers retweeted
Arbitrum Founder House is a perfect opportunity for ambitious founders test new ideas, experiment and find early product market fit @wazarat, founder of CanHav Research, came into Founder House NYC with an exciting idea around agentic finance. The following year, the team returned to Founder House London where they: > Tested and refined their agentic idea through mentorship and feedback from fellow founders > Built an agentic platform for navigating complex DeFi markets and reached 25 active beta users > Won the Agentic Track, taking home 2nd place and $6K in prizes If your team is innovating around tokenization, AI, or programmable finance, join us at Founder House in Singapore from October 23–25th Register today: luma.com/openhouse-singapore…
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The Open House online Buildathon is currently ongoing Before you submit, ask yourself: > Who has this problem, and what do they do about it today? > Why is your approach hard to copy in a weekend? > What did you cut, and why? @hummusonrails' article breaks down how to create a compelling submission with AI-generated code as part of it 👇
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If you’re building something you want to take beyond the Buildathon: Selected teams will have the opportunity to join Founder House Singapore, an in-person program designed to help founders refine their product, sharpen their GTM, and take the next step toward launch Learn more & apply 👇 luma.com/openhouse-singapore…
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Arbitrum Developers retweeted
Having experienced firsthand what it means to build, stress-test, and scale underwritten infrastructure inside the @arbitrum ecosystem during Open House, we can’t recommend this enough for serious technical founders. ​When we participated, those intensive days of direct ecosystem mentorship and rapid iteration gave our agentic credit architecture the sharp focus it needed to move fast. ​If your team is building at the intersection of AI, autonomous agents, and financial primitives, do not sleep on this: ​• Direct Mentorship: Real-time feedback from core engineering leaders and top-tier partners. • High-Velocity Execution: Three focused days to ship features, validate risk models, and stress-test assumptions. • Ecosystem Alignment: Deep integration into the premier scaling home for institutional finance. ​Applications for the upcoming Arbitrum Open House are live. Build where the infrastructure actually scales.
Arbitrum Founder House is just one month away Together with Robinhood Chain, we’re inviting founders to Singapore to bring their products onchain with technical, product and GTM support + $300K in prizes and grants Here’s a glimpse of what founders can expect Register today: luma.com/openhouse-singapore…
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Arbitrum Developers retweeted
Catch us at @arbitrum's Founders Eve during Token2049 on October 7th in Singapore! Our very own @allred_chase will be there to support teams with ZeroDev’s smart accounts, embedded wallets and programmable wallet stack All teams are welcome. Register below 👇
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Building on Arbitrum One or Robinhood Chain? This is your opportunity to work directly with ecosystem experts, refine your product, and compete for $300K in prizes and grants Secure your spots today 👇 luma.com/openhouse-singapore…
Arbitrum Founder House is just one month away Together with Robinhood Chain, we’re inviting founders to Singapore to bring their products onchain with technical, product and GTM support + $300K in prizes and grants Here’s a glimpse of what founders can expect Register today: luma.com/openhouse-singapore…
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If you’re attending #TOKEN2049, join us at Arbitrum Founders Eve on October 7 to connect with founders and ecosystem leaders We’ll also be hosting a live startup pitch competition with @DeFiFounders, where top teams will win a sponsored trip to Founder House Singapore👇 luma.com/arbitrum-founders-e…
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Arbitrum Developers retweeted
Arbitrum Founder House is just one month away Together with Robinhood Chain, we’re inviting founders to Singapore to bring their products onchain with technical, product and GTM support + $300K in prizes and grants Here’s a glimpse of what founders can expect Register today: luma.com/openhouse-singapore…
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Agent has a wallet ≠ Agent can pay Before an agent can buy anything, both sides need to agree on the payment terms, verify authorization, and settle the transaction. @hummusonrails breaks down how the Machine Payments Protocol, or MPP, handles that flow on Arbitrum 👇
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Arbitrum Developers retweeted
Building a successful onchain product starts with understanding your users and doubling down on the one use case that matters most Hear @queenofeng1and at @zerodev drop tips for founders on how to make their products 10x better for the upcoming Founder House Singapore 👇
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We're hosting Arbitrum Founders Eve during #TOKEN2049 On October 7, founders will join us to: - Get the latest updates on the Arbitrum ecosystem - Discover more about our founder support program - Pitch their startup live in a competition hosted with @DeFiFounders Winners will get a sponsored trip to our in-person Founder House in Singapore happening on October 23-25 RSVP here 👇🏻 luma.com/arbitrum-founders-e…
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Arbitrum Developers retweeted
Applications for Founder House Singapore are open Starting Oct 23, selected teams will spend 3 focused days to: > refine their product & strengthen their GTM strategy > receive hands-on product, techncal, infra, & GTM support > compete for a share of $300K in prizes + grants Building across AI, privacy, or payments on Arbitrum One or Robinhood Chain? Apply below 👇 luma.com/openhouse-singapore…
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