About
Yellow Network lets you deposit crypto once and make lightning-fast transactions without waiting for blockchain confirmations or paying gas each time. It combines the best of both worlds — the speed of off-chain systems and the security of smart contracts.
💡 How it works: When you send funds or interact with an app, your transfers happen off-chain through a secure network of Yellow nodes that keep balances in sync. It feels instant, like using a regular web app. Smart contracts on each blockchain act as safes: they hold your deposit, verify everything, and make sure your money is protected. If you ever stop using the app or want to withdraw, your final balance is settled on-chain. Your session is protected by unique digital keys that only you control. No one can change your balance or take your funds. Even if something goes wrong, your assets automatically return to you.
🚀 Key features:
- Works as a Layer-2 network, not a new blockchain
- Enables real-time, gasless payments that still settle safely on your preferred chain
- Designed for games, apps, and tools that need instant user actions and smooth UX
- Includes built-in liquidity pools to make sure there’s always capital available for fast transactions
- Compatible with all EVM chains, Solana and others coming soon.
Prizes
Use the Yellow SDK and Nitrolite protocol to build a mini-app or feature that showcases instant, session-based transactions - all happening off-chain and settling on-chain when needed.
💥 How to participate
- Integrate the Yellow SDK, connect to the Nitrolite test environment and create a wallet session.
- Implement off-chain logic: simulate sending or spending assets instantly between users or in-app actions.
- Show on-chain settlement: finalize balances through smart-contract calls when users end their session.
🛍️ Example App Ideas
- In-Game Wallet: players deposit once and buy items or earn rewards instantly during gameplay.
- Tipping System: users send 0.01 USDC per like, emoji, or message without gas or delay.
- Pay-Per-Use App: charge users per API call, minute, or read action - settle once at the end of session.
- Cross-App Wallet: one balance shared across multiple dApps (browser plugin, Telegram mini-app, etc.).
💎 Why Build on Yellow
- Gas-free & instant: off-chain state channels = Web2 speed, Web3 security.
- Session-based logic: define allowances for in-game or in-app use.
- Multi-chain ready: works with all EVM chains; Solana support coming soon.
Qualification Requirements
✅ Qualification Requirements - to qualify for the Yellow Network Prize, your project must:
- Use the Yellow SDK / Nitrolite protocol in your submission.
- Demonstrate off-chain transaction logic — e.g., instant payments, session-based spending, or settlement finalized via smart contracts.
- Deploy or simulate a working prototype showing how Yellow improves transaction speed, UX, or efficiency.
- Include a 2–3 minute demo video showing your integration and user flow.
- Submit your project under the “Yellow Network” prize track on ETHGlobal and include a repo link.
🏆 Judging Criteria Projects will be evaluated based on:
- Problem & Solution: clarity of the problem addressed and creativity of the solution.
- Yellow SDK Integration: depth and impact of integration with Yellow technology.
- Business Model: clarity and sustainability of the project’s value or revenue model.
- Presentation: ability to communicate the idea clearly and persuasively.
- Team Potential: team’s skill, passion, and commitment to continue post-hackathon.
