Builder's Block #014: ArbiLink Agentic Bounty is Live & Mentorship Program Partners Announced
🤝 Partners announced for the Arbitrum Mentorship Program
🤖 Join the Agentic Bounty Challenge and win a trip to Open House London
📊 Arbitrum Foundation's 6th annual report is now live
📣 Announcements
Key updates from the Arbitrum ecosystem and Foundation.
Variational, USD.AI, and Pendle Join Arbitrum Mentorship Program
Three ecosystem leaders are joining as mentors for the Arbitrum Mentorship Program, covering product strategy, go-to-market, liquidity, and fundraising. If you're building on Arbitrum and want structured support from teams who've done it, this is worth applying for. Applications are open now.
➡️ Apply for the Mentorship Program Now
Arbitrum Foundation Publishes 6th Annual Transparency Report
The Foundation's 6th annual report covers protocol upgrades, DAO activity, treasury usage, and ecosystem growth across 2025.
Beyond performance gains, the focus shifted toward building open, sustainable infrastructure at scale while continuing to ship meaningful upgrades. Worth a read if you want the full picture on where the protocol stands.
➡️ Read the Annual Transparency Report
📚 Learn & Build
New learning drops and hands-on resources from across the Arbitrum ecosystem.
Deploy AI Agents with LangChain on Arbitrum
Learn how to wire up dynamic contract tools with LangChain, connect to Arbitrum, and send transactions out with an AI Agent in under 8 minutes. Covers the full loop from tool registration to on-chain execution, with working code you can fork.
➡️ Watch the Video
Avail x Arbitrum Workshop: Cross-Chain Liquidity for Arbitrum dApps
The recorded workshop walks through how Arbitrum apps can query and verify data from any chain using Avail's DA layer.
Useful if you're building cross-chain infrastructure or need cheap, verifiable off-chain data access.
➡️ Watch the Workshop
Rust vs Solidity: Business Logic Efficiency with Arbitrum Stylus
Discover the scoring engine to measure Rust vs. Solidity performance head-to-head: a standard Rust API owns the business rules in a DB and calls a Stylus contract on Arbitrum as the compute layer. The video breaks down when it's worth reaching for Rust in your backend.
➡️ Read the Thread
🔦 Ecosystem Highlights
Fresh launches and standout threads from around the Arbitrum ecosystem.
OWS Now Supports Arbitrum for AI Agent Wallets
The Open Wallet Standard (OWS) by MoonPay is a cross-chain wallet standard built with AI agents in mind. It handles key storage, wallet management, and transaction signing locally and policy-gated, so your agent can operate on-chain without you compromising on spending controls.
Arbitrum support is now live. Worth looking at if you're building autonomous agents and custody is a concern.
➡️ Read about the Announcement
🛠️ Dev Tooling & Infra
Updates to SDKs, CLIs, and developer workflows across the stack.
Arbitrum Sepolia Node Operators: Upgrade to Nitro 3.9.8 Now
On March 23, Arbitrum Sepolia experienced a partial outage. Functionality was restored the same day. Out of an abundance of caution, all node operators across all Arbitrum chains are encouraged to upgrade to Nitro 3.9.8 at their earliest convenience. The release is available as a Docker image on Docker Hub.
➡️ Read the Thread
🗓️ Events
Workshops, hackathons, and ecosystem meetups to watch.
Agentic Bounty Challenge: Build AI x Onchain, Win up to $250 USDC or a Trip to Open House London
The Agentic Bounty is live and open to everyone online. Build something that connects AI agents to Arbitrum: deploying contracts, using wallets, reading onchain data, bridging assets, or interacting with ecosystem protocols, all in scope.
🏆 $250 USDC for top 3
✈️ Chance to win a funded trip to Arbitrum Open House London
🌍 Open to everyone (online)
🗓 Starts now → Ends Apr 3, 19:30 CET
➡️ Join the Challenge
ArbiLink at ETHCC Cannes: Happening Today
ArbiLink Cannes is designed to create real connections and highlight what’s happening across Arbitrum today.
- Insightful talks and panels featuring ecosystem leaders
- Real-world use cases and enterprise adoption conversations
- High-signal networking with builders and founders
- A relaxed, social atmosphere with drinks and canapés
➡️ Register on Luma
🧵 Forum & Community Discussions
What builders are debating and proposing this week.
Security Council Elections: 12 Nominees Advance to Compliance Stage
The nominee selection phase concluded, with 12 applicants moving forward to the compliance stage. If you're following the Security Council election cycle, the qualified nominee list is now public.
➡️ View Qualified Nominees:
ArbOS 60 Elara Upgrade Proposed for Arbitrum One and Nova
A constitutional AIP is up for temperature check proposing to upgrade both Arbitrum One and Arbitrum Nova to ArbOS 60 Elara. Worth tracking if you're maintaining contracts or infrastructure that could be affected by protocol-level changes.
➡️ View the Temp-Check
DAO Proposes Transitioning Code of Conduct to a Living Document
A temp-check proposes moving the Code of Conduct and DAO Procedures away from a trial-based framework and into a persistent, living document maintained by the OpCo. Relevant if you participate in governance or submit AIPs.
➡️ View the Temp-Check
Proposed Enhancements to the Arbitrum Audit Program
A new proposal introduces operational improvements to the Arbitrum Audit Program. If you're planning to go through an audit or are involved in the security review process, the proposed changes are worth reviewing before they move to a full vote.
➡️ View Proposal
That’s all from Builder’s Block #014. Thank you for reading, and keep building. Arbitrum Everywhere.