Builder's Block #008 - Porting Solana to Arbitrum, Prysm Post-Mortem & WASM performance
🔹 Prysm Post-Mortem on Fusaka
⚙️ Why WASM is the answer to execution models
💲 Gas is the new Vitalik's discussion
📣 Announcements
Key updates from the Arbitrum ecosystem and Foundation.
Prysm Mainnet Post-Mortem
Technical analysis of the "Fusaka" incident on Mainnet. Details the root cause, the impact on network participation, and the patches implemented in v7.0.1+ to prevent recurrence.
➡️ Read post-mortem
📚 Learn & Build
New learning drops and hands-on resources from across the Arbitrum ecosystem.
Discover how WASM Elevates Performance Beyond the EVM
A deep dive into how Stylus uses WebAssembly to complement EVM execution limitations. Explains how WASM enables more efficient computing and lower gas costs while maintaining full interoperability.
➡️ Read article
Optimized Redstone Oracles: A technical deep dive
New technical analysis from RedStone integration with Arbitrum Stylus to process oracle data with lower latency and cost.
➡️ Read on X
5 hands-on sessions on Arbitrum Stylus
A full course on YouTube, including an intro to Stylus, a speedrun, Uniswap fork in Stylus-based coding, Stylus data types, and the Stylus CLI.
➡️ Watch it on YT
Building Agentic Payment Flows Session
If you’re building for x402 and AP2, this session is a must watch. CapxAI and Arbitrum have prepared a full workshop on Agentic Payment Flows and Private AI Inference.
➡️ Watch it on X
Migrate Solana applications to Ethereum liquidity
Solana teams looking to expand into Ethereum liquidity without ditching Rust: StylusPort is a practical handbook + CLI/MCP assistant for bringing Rust programs to Arbitrum Stylus with familiar tooling.
➡️ Watch it on YT
🔦 Ecosystem Highlights
Fresh launches and standout threads from around the Arbitrum ecosystem.
L2 vs L1 Economic Models
A breakdown of the fundamental differences between Ethereum L1 and L2 economics. Analyzes long-term sustainability, sequencer revenue models, and data availability costs.
➡️ Read thread
Confidential Payments and Lending Auctions Talk
Technical exploration of implementing confidential stablecoins and sealed-bid lending auctions directly on Arbitrum by Peyman Momeni from Fairblock.
🗓️ Events
Workshops, hackathons, and ecosystem meetups to watch.
Meet Steven Goldfeder
Join Offchain Labs' CEO at the end-of-year special event, in person in Tel Aviv or online. There is a surprise planned.
➡️ Grab Your Spot Now
🧵 Forum & Community Discussions
What builders are debating and proposing this week.
Vitalik on Trustless Gas Prediction Markets
Vitalik Buterin discusses architecture for trustless gas prediction markets. A technical approach to optimizing fee estimation and improving block market efficiency on L2s.
➡️ Read on X
AIP: Activate ArbOS 51
Constitutional proposal to activate ArbOS 51 "Dia". Includes support for Ethereum's Fusaka upgrade changes, gas pricing improvements, and critical node optimizations.
➡️ Vote on Tally
Proposal: Stablecoin Fast Lane
Forum discussion on creating a transaction fast lane (similar to TimeBoost) specifically optimized for stablecoin payments to reduce latency in financial transactions.
➡️ Read proposal
That’s all from Builder’s Block #008. Thank you for reading, and keep building. Arbitrum Everywhere.