- ETHGlobal Buenos Aires - November 21 - 23, 2025
LayerZero is an omnichain interoperability protocol that enables seamless communication between different blockchains. It allows developers to build omnichain applications (OApps) that can interact across multiple chains as if they were on a single chain.
Why build with LayerZero at a hackathon?
- Reach More Users: Deploy your dApp once and interact with users and assets across all supported chains.
- Unify Liquidity: Avoid fragmented liquidity; build DEXes, lending platforms, etc., that leverage a shared cross-chain pool.
- Simplify Development: Build complex cross-chain logic using familiar tools (Hardhat, Foundry, etc.) and LayerZero's contract standards (OApp, OFT, ONFT). Get started quickly with the
create-lz-oappCLI. - Enhance Security: Benefit from a configurable, decentralized security model using Decentralized Verifier Networks (DVNs).
- Improve User Experience: Abstract away cross-chain complexities, offering seamless interactions without users needing multiple wallets or bridging steps.
- Innovate: Explore novel use cases like cross-chain governance, gaming, data queries (
lzRead), and complex multi-step workflows (Composability).
- 💬 Join LayerZero Discord - Get support, ask questions, and connect with the team and other builders.
- 📖 LayerZero Docs - Start with docs. Covering OApp, OFT, ONFT standards, configuration, tooling.
- 🛠️ CLI Quickstart Guide - Fastest way to start building with
create-lz-oapp. Quickly scaffold a Hardhat/Foundry project. - ⚙️ Core Concepts
- 💡 Example Projects - Example projects can be found in devtools/examples repo, including OApp, ONFT, lzRead, and multiple VM-specific or use case-specific examples.
- 🔍 LayerZero Scan - Transaction explorer for Mainnet and Testnet
- 📹 Tutorials & Workshop Recordings:
- There's usually a live workshop before the hackathon starts. It's a good idea to attend this. If you miss it, here are some recordings of past workshops:
- Intro to LayerZero V2 & Omnichain Apps for Beginners
- Mastering Cross Chain State Retrieval
- Innovation & Creativity: How novel is the idea? Does it leverage LayerZero's unique capabilities in interesting ways?
- Technical Implementation: Quality of the code, effective use of LayerZero protocols (OApp, OFT, ONFT, lzRead, Composability), smart contract security, and overall technical soundness.
- Impact & Usefulness: How valuable is the application? Does it solve a real-world problem or have significant potential?
- Omnichain Aspect: How core is LayerZero to the application? Does it solve a real cross-chain problem or enable a truly omnichain experience?
- User Experience (UX): How easy and intuitive is the application to use? Does it successfully abstract away cross-chain complexity?
- Presentation & Demo: Clarity of the project presentation and effectiveness of the live demo.
Examples of past hackathon projects built with LayerZero:
ETHGlobal Buenos Aires 2025
ETHGlobal New York 2025 Best Omnichain DeFi Primitive
ETHGlobal New York 2025 Best Omnichain Interaction
ETHGlobal Cannes 2025 Best Omnichain Interaction
ETHGlobal Cannes 2025 Best Omnichain DeFi Primitive
ETHGlobal Prague 2025 lzRead Track
ETHGlobal Prague 2025 Composibility Track
ETHGlobal Prague 2025 General Track
ETHGlobal Bangkok 2024 - Best Omnichain Solutions
ETHGloabal Bangkok 2024 - Best LayerZero Read
ETHGlobal San Francisco 2024 - Most Innovative Omnichain Solution
ETHGlobal Singapore 2024 - Most Innovative Omnichain Solution
ETHOnline 2024 - Most Innovative Omnichain Solution
ETHGlobal Brussels 2024 - Best Omnichain Implementation
- Primary Support Channel - LayerZero Discord - Start with
#dev-generalchannel. - LayerZero Team - Find members of our team at LayerZero table in the hackathon venue. Talk to them about your project, ask questions, get help.