OpenBuild Dev Digest #91 | EVMBench Audit Insights & Crypto-AI Adaptation & Ethereum App Layer Vision
February 28 - March 6
Welcome to OpenBuild Dev Digest #91!
This week’s digest covers core topics of Web3 and AI integration, sharing new insights into smart contract security, industry transformation survival, and public chain ecosystem development: OpenZeppelin audited EVMBench (co-launched by OpenAI and Paradigm), pointing out its methodological flaws and invalid vulnerability classifications, with at least four high-severity labeled issues being practically unexploitable; A crypto practitioner faces AI-driven industry changes head-on, turning job-loss anxiety into proactive leverage of AI, and proving AI is not a career replacement but an amplifier of individual capabilities; Vitalik defines the development direction of the Ethereum ecosystem, advocating adherence to L1's core features such as censorship resistance and open source, and reconstructing the application layer with a bolder and more open mindset to adapt to the AI era.
StableHacks: Building Institutional Stablecoin Infrastructure on Solana
📅 January 26 - March 22 📍Online 💸 202,000USD Apply
StableHacks 2026 is an online, global hackathon for startups and experienced developers building institutional-grade stablecoin infrastructure on Solana.
The hackathon targets real-world, scalable use cases at the intersection of DeFi and TradFi, with a focus on regulatory-aligned, security-first, production-ready solutions.
Focus areas:
Institutional Permissioned DeFi Vaults
Cross-Border Stablecoin Treasury
Programmable Stablecoin Payments
RWA-Backed Stablecoin & Commodity Vaults
BUIDL BATTLE #2 | The Bitcoin Builders Tournament
📅 March 2 - March 21 📍Online 💸 20,000USD Apply
Let’s get ready to build! Buidl Battle is a competition designed to celebrate and strengthen innovative projects built on Bitcoin. This three-week virtual event invites builders to put their projects in the spotlight, connect with investors and accelerators, and engage with other builders in the Bitcoin builder community.
During Buidl Battle, projects and builders will gain the spotlight and momentum to level up their work, while fresh talent will be welcomed into the ecosystem. Much more than a competition, Buidl Battle is a celebration and a launching point for the next wave of Bitcoin builders 🚀🚀
OneHack 3.0 | AI & GameFi Edition
📅 February 8 - March 28 📍Online 💸 16,100USD Apply
OneHack 3.0 is a global, builder-first hackathon organized by OneChain, focused on creating GameFi and AI-powered applications on OneChain’s Move-based infrastructure.
This hackathon is designed for developers who want to move beyond ideas and ship real, working MVPs. Participants are encouraged to build production-oriented applications with clear use cases, strong execution, and meaningful integration within the OneChain ecosystem.
✍️ We Audited OpenAI's EVMBench. Here's What We Found. 👉Read(EN)
If you’ve been following recent AI smart contract security news, you’ve likely seen EVMBench, the new benchmark from OpenAI in partnership with Paradigm. We reviewed the dataset and identified methodological flaws and invalid vulnerability classifications including at least four issues labeled high severity that are not exploitable in practice.
✍️ AI stole my job (and how I’m using it get it back) 👉Read(EN)
AI hit me hard when I lost my job, leaving me anxious and uncertain. I once believed the era of hard work was over and that AI would replace us all. But I soon realized: AI only replaces those who are replaceable. It is not an enemy, but an amplifier. By building my own systems and letting AI handle repetitive work, I am taking back control, betting on myself, and using AI to rebuild my career and future.
✍️ Vitalik: Ethereum should adhere to the core characteristics of L1 while adopting a bolder and more open mindset at the application layer 👉Read(EN)
I think it's healthy for us in the Ethereum world to have a more bold and open mindset to many things, particularly on the application layer and on how we see ourselves in the world.
💸Optimism
Maximum Bounty $2,000,042 👉 Apply
Optimism is a blockchain infrastructure provider that enables developers and enterprises to launch scalable, secure and customizable networks and applications. The company serves fintechs, payment providers, institutions and crypto companies creating the next generation of onchain products. Optimism's open-source OP Stack delivers Ethereum-grade security, nearly-free transactions, and the flexibility to meet complex business needs at scale.
💸 Parallel
Maximum Bounty $250,000 👉 Apply
Parallel is a capital-efficient, modular stablecoins protocol that allows the creation of over-collateralized, decentralized stablecoins. The protocol consists of several different modules, which can be added or removed over time by the DAO, from which stablecoins can be issued or minted.
💸 Chainlink
Maximum Bounty $3,000,000 👉 Apply
Chainlink is the industry-standard Web3 services platform. It has enabled trillions of dollars in transaction volume across DeFi, on-chain finance, gaming, NFTs, and other major industries. As the leading decentralized oracle network, Chainlink empowers developers to build feature-rich Web3 applications with seamless access to real-world data and off-chain computation across any blockchain.
Selected open courses from technical skills to practical tasks, accessible to everyone with no cost!
🌟 Linera Dev Hands-On Open Series
OpenBuild is an open-source community and platform for Web3 developers. Our aim is to bring more Web2 developers into the Web3 space while helping existing Web3 developers to better build and achieve commercial success through our products! Join us on more platforms: OpenBuild Linktree