For the project that demonstrates the most powerful and creative use of omnichain contract interactions. This prize specifically targets non-token transfer use cases that leverage LayerZero’s core messaging rails. We are looking for projects where contracts on different chains communicate and trigger complex actions with one another. Think beyond asset transfers and focus on building applications that synchronize state, share logic, or create a single, cohesive experience across multiple networks. Ideal submissions will solve problems in areas like: - Omnichain Governance: Allowing a DAO on one chain to control contracts or treasuries on others. - Cross-Chain Account Abstraction: Creating a single "smart account" that can execute transactions on any connected chain. - Omnichain Identity & State: Managing a user's data or application state (e.g., game progress, user profiles) seamlessly across chains. Omnichain Data Synchronicity: Ensuring data consistency, replicating critical states, or synchronizing off-chain data feeds across different blockchain environments. To win, your project must showcase an advanced use of OApp (push-based messaging), lzRead (pull-based messaging), and/or Composer (subsequent messaging) to facilitate this interaction. Projects that creatively combine these messaging models will be viewed favorably.

For the most advanced and practical financial application built using LayerZero’s token standards. This prize is for projects focused on the secure and efficient omnichain transfer of value. We are looking for builders who are creating novel DeFi primitives, extending the functionality of existing tokens (e.g., ERC20, ERC4626, ERC721), or building new types of omnichain infrastructure. Your goal is to demonstrate how LayerZero can eliminate liquidity fragmentation and create a more unified crypto ecosystem. Ideal submissions will build novel solutions like: - Omnichain Yield-Bearing Tokens: Creating or extending an ERC4626 vault or similar yield-bearing token, allowing users to deposit on one chain and have their liquidity put to work on another. - Advanced Tokenization: Implementing a creative use of the OFT Standard to bring new utility to an existing token or using the ONFT standard to represent unique financial positions or assets. - Complex Value Transfer: Using Composer to build sophisticated, multi-step financial transactions. For example, a cross-chain swap that allows a user to send Token A on Chain X and seamlessly receive Token B on Chain Y. - Cross-Chain Lending & Collateral: Building a protocol where assets on one chain can be used as collateral for borrowing assets on a different chain. To win, your project must be built upon the OFT or ONFT standards. Implementations that leverage Composer for subsequent value transfer operations will be highly regarded.

Build a novel extension for 1inch Cross-chain Swap (Fusion+) that enables swaps between Ethereum and one of the following non-EVM chains: Sui, Aptos, Bitcoin/Bitcoin cash/Doge/Litecoin, Tron, Ton, Monad, Near, Starknet, Cardano, Stellar, XRP Ledger, ICP, Tezos, Polkadot, EOS, or Cosmos.

Build advanced strategies and hooks for the 1inch Limit Order Protocol. Project ideas: - Develop an options hook - Integrate concentrated liquidity - TWAP swap - Other creative projects are welcome Existing examples built on top of Limit Order Protocol include ranged sells and dutch auctions (links in hackathon documentation)

Utilize 1inch's infrastructure to help build your application - Build with our swap protocols (1inch Cross-chain Swap (Fusion+), Intent-based Swap (Fusion), Classic Swap, limit order protocol) - Build with any of our data APIs (price feeds API, wallet balances API, token metadata API, and many more) - Use our Web3 API to interact with the blockchain

Show us your best Mini Apps! Projects that build and deploy a Mini App using MiniKit are eligible for this prize.

This pool prize is for all projects that build within the World ecosystem (and don't receive another prize from World)!

Please note: The Oasis Foundation reserves the right to adjust the reward structure based on the quality and relevance of the submissions received. What to build: ROFL (Runtime Off-chain Logic) apps run inside a Trusted Execution Environment (TEE). They rely on Sapphire for registration, billing, virtual machine management, and secure storage of secrets and configuration. Execution within ROFL takes place entirely off-chain, making it ideal for compute-intensive or always-on services such as secure decentralized oracles, bridges, AI agents, LLM chatbots, and more. Redundancy is possible with native support for replicas. Apps running in ROFL can also access its key management service, allowing Sapphire smart contracts to verify that a transaction was genuinely signed from within the TEE.

Support our continued improvement of developer experience by providing useful feedback to us.

The best project that deploys on Zircuit will win this prize. The code should be well engineered, tested, and have a compelling use case. These gems are the projects that will inspire future hackathon projects because of their outstanding quality. Remember: deploying on Zircuit is as easy as changing your endpoint in your favorite development framework. As long as the contracts are deployed on Zircuit and verified, the project is eligible. A successful submission will include a functional prototype that solves the problem it’s intended to address. It will showcase some innovation/creativity, either through technological or UI improvements. It may be complete and solve a long-standing open problem or introduce something with a lot of potential for future development. Either way, it has an impact on the Zircuit ecosystem. Winning projects should have a user-centered design that makes it easy for the target audience. This can be end users or developers integrating the project into their own codebase. The best may also include clean and consistent visual designs. Any interesting blockchain applications are welcome. Novel ideas are more impressive than clones of existing projects, though there are certainly times where clones include significant improvements. Those that are very technical may impress the judges if done correctly but simpler ideas may be easier to do well. This bounty will be judged based on completeness, execution, and creativity.

Zircuit is an early adopter of EIP-7702 which brings some account abstraction on-chain. This bounty is to use this functionality in a new and complete way on-chain. This can include deploying contracts to delegate to, interfaces to use the new transaction types, and more. Remember: deploying on Zircuit is as easy as changing your endpoint in your favorite development framework. You may need to use command line tools to use 7702 functionality (see the links!). A successful submission will include a functional prototype that solves the problem it’s intended to address. It will showcase some innovation/creativity, either through technological or UI improvements. It may be complete and solve a long-standing open problem or introduce something with a lot of potential for future development. Either way, it has an impact on the Zircuit ecosystem. Winning projects should have a user-centered design that makes it easy for the target audience. This can be end users or developers integrating the project into their own codebase. The best may also include clean and consistent visual designs. Any interesting blockchain applications are welcome. Novel ideas are more impressive than clones of existing projects, though there are certainly times where clones include significant improvements. Those that are very technical may impress the judges if done correctly but simpler ideas may be easier to do well. This bounty will be judged based on completeness, execution, and creativity.

Have a world-changing idea but not necessarily any code? This is your chance to shape the future of the Zircuit ecosystem with nothing but your creativity and strategic thinking. The best submission will be a compelling, well-architected concept for a “killer app” on Zircuit—an application so impactful it inspires builders, excites users, and becomes a reference point for future innovation. This prize is for visionary thinkers, and code isn’t required. We're looking for: - A clear and detailed problem statement - A compelling solution that leverages Zircuit’s unique capabilities (Sequencer level security, account abstraction support, or simply the network performance) - A functional architecture diagram or component layout (this can be text or image based, but be sure to convince us that you’ve thought about the pieces) - A well-written pitch: how it works, why it matters, and who it’s for. Winning projects may also include user journeys, token mechanics (if applicable), market research, and plans for future development.

Build something awesome using Chainlink CCIP and/or CCT Standard! This track purely focuses on implementations that make sense in a multi-chain world and use CCIP and/or CCT standard to enable seamless interoperability. - The Chainlink Cross-Chain Interoperability Protocol (CCIP) provides a single simple interface through which dApps and web3 entrepreneurs can securely meet all their cross-chain needs, including token transfers and arbitrary messaging. - The Cross-Chain Token (CCT) standard offers a streamlined and decentralized approach to enabling token transfers across blockchains using Chainlink's Cross-Chain Interoperability Protocol (CCIP). Traditionally, token developers had a friction-laden and manual process to enable their tokens for cross-chain operations. Use our CCIP Local to speed up your development on your local Hardhat, Foundry or Remix network, then use our Faucet to easily get testnet funds when you're ready for testnet. Links to both at the bottom in the 'Resources' Section!

Build something awesome using Chainlink! Anything that came from the Chainlink Documentation counts - using Price Feeds, Data Streams, PoR, VRF, Automation or Chainlink Functions!

Use protocols on Flare blockchain in an innovative and world changing way! Build DApps utilising at least one of Flare’s Enshrined Data Protocols: * FTSO (Flare Time Series Oracle) for price feeds. * FDC (Flare Data Connector) for Web3 and Web2 data sources, * Flare’s Secure Random Number Generator, or * FAssets to build dApps that use FXRP (synthetic XRP on Flare) bringing non-smart-contract XRP into DeFi.

Most innovative external data source use case or most innovative cross chain application secured by Flare’s protocols.

Make smart contract interactions more transparent by implementing the ERC-7730 standard. Help drive adoption of transparent transaction signing in the Ethereum ecosystem. Example Projects: - Create ERC-7730 JSON files for major DeFi protocols → Win a Ledger Flex! - Build tooling around ERC-7730 to simplify development or drive adoption - Implement Clear Signing in your ETHGlobal hackathon project - Provide feedback on the ERC-7730 standard implementation

Integrate Ledger hardware wallet support using our new Device Management Kit . Build secure dApps, Device Apps, or Plugins that leverage hardware wallet capabilities. Example Projects: - Integrate Ledger hardware wallet support in your dApp - Implement the Ledger Device Management Kit in popular Ethereum Connector libraries (ethers.js, wagmi, RainbowKit, web3-react, Reown AppKit, Web3Auth...) - Build an app for Ledger devices or integrate one in Ledger Live

Help improve Ledger's developer experience by providing comprehensive feedback on our documentation and standards. Provide feedback on our developer resources (Clear Signing docs, ERC-7730 specification, Device Management Kit docs, etc).

Consumer-oriented “killer apps” have the power to define and lead entire industries by solving real user pain points at scale—think of how ChatGPT made AI accessible to hundreds of millions. Flow is designed for mass adoption and consumer-grade experiences, so we’re looking for the next breakthrough application that can capture the interest of millions (or billions!) of everyday users. This is a very broad bounty and eligible projects include everything from AI Agents and RWA to games and social apps. Tip: Many Flow-based consumer apps use Privy for seamless, email-based onboarding and embedded wallets. We highly recommend integrating Privy + Flow to get the best of smooth UX and onchain power.

The future of DeFi is cross-chain and Flow is ready to be at the center of it. This prize is for the most compelling projects that unlock cross-chain DeFi on Flow, whether it’s bridging liquidity, creating cross-chain yield strategies, or inventing seamless UX between Flow and other EVM ecosystems. We want to see projects that: • Bridge liquidity between Flow and other chains • Integrate Flow into cross-chain DeFi protocols • Invent new primitives that rely on multi-chain flows of assets or data Build the next generation of DeFi that breaks silos and brings Flow into the global liquidity network.

Build an application that enables multichain USDC payments and payouts using Fast Transfers from CCTP V2. * Please note that CCTP V2 currently supports Avalanche, Arbitrum, Base, Ethereum, Linea, Sonic * Bonus points if CCTP V2 hooks are used Example Use Cases -> Liquidity Provider Intent System - Enable liquidity providers to send and receive USDC across multiple chains. -> Multichain Treasury Management - Help businesses manage USDC balances across multiple chains -> Universal Merchant Payment Gateway – Implement a multi-chain checkout system for merchants to accept -> USDC payments across various blockchains which rebalance to desired chain via CCTP V2.

Develop an application that enables users to pay network fees in USDC instead of native tokens by leveraging Circle Paymaster. *Please note that Circle Paymaster currently supports Arbitrum, Avalanche, Base, Ethereum, Optimism, Polygon and Unichain Example Use Cases -> DeFi Protocols - Enable USDC as the default gas payment token for transaction activitiy in dApps like Lido, AAVE, etc. -> Simplified transactions - Make it easier for users to perform transactions in USDC or other tokens while network fees are paid from their USDC balance.

Leverage Circle Wallets and the Gas Station feature to create a fully gas sponsored user experience.

Leverage Circle Wallets and the Compliance Engine feature to implement dynamic security controls for USDC transactions. Example Use Case -> Risk-Based Authentication - Implement dynamic authentication where transactions require passkey authentication and implemented risk policies.

Most people understand ENS' simple use cases (name → address lookup, address → name lookup, etc.), but few explore what else it can be used for. For inspiration, consider naming AI agents, storing interesting data in text records (like verifiable credentials or zk proofs), or auto-rotating addresses on each name resolution for privacy applications.

Any type of ENS integration is eligible for this prize. Get creative! An example of a successful project may be a smart contract wallet that mints an ENS subname on L2 and sets its primary name upon deployment. If you're building an AI project, consider how ENS can be used to name autonomous agents. Come by our booth for help brainstorming ways to integrate ENS into your project!

Use Walrus for decentralized storage in a new Web3 app. Try to focus on an app idea where decentralized storage solves a current pain point. For example, hosting for NFTs, democratization of AI models, or crowdsourced video streaming.

Create a new tool for developers integrating with Walrus. Walrus is a chain-agnostic decentralized storage network, and therefore presents a lot of opportunities for useful developer tooling. For example, SDKs, caching layers, streaming tools or blob management tools. Check out the Awesome Walrus repo for existing developer tools, to check that your idea doesn't currently exist. Check in with the Walrus team at the hackathon to verify your idea before you get in too deep!

🥇 1st place $1000 Objective: Build a decentralized application that utilizes the GRC-20-ts TypeScript library to publish offchain knowledge to the Knowledge Graph. This bounty rewards creative use of the GRC-20-ts library to attach meaningful metadata of contracts, protocols, or dapps to knowledge graph Example Use Cases: • Publishing protocol descriptions or governance rules • Publishing offchain data through GRC20-ts to the Knowledge Graph

🥇 1st place $3,000 🥈 Runner up: $2,000 Build a high-impact application using the Knowledge Graph Framework to organize and query public web3 data in a composable and structured way. Examples and ideas: • Crypto Projects Directory: Structured registry of projects organized by category, type, and industry • Investment Graph: Dataset mapping project-investor relationships into a rich network • Dapp Registry: Extensible list of decentralized applications by domain and function • DAO Governance Explorer: Visualization of governance proposals, voting, and outcomes across DAOs

🥇 1st place $2,500 🥈 Runner up: $1,500 Build an innovative project that integrates The Graph’s data products—Subgraphs, Substreams, or Token API—to deliver real-world utility, insight, or AI-enhanced functionality. Projects should demonstrate technical creativity and effective use of onchain data. Bonus points for AI-driven solutions that leverage MCP servers to enable agentic or natural-language capabilities. Remember: extra points if you build AI-driven solutions, such as agents!

Using the Self.xyz SDK, allows a user to disclose their country, age (or range), that they are not on OFAC or from a sanctioned country, and verify that proof that onchain on the Celo network.

Integrate Self offchain SDK into your application so users can prove their identity! Check out the Quickstart to see how quickly you can implement the Self SDK into your dApp.

The first-place winners will receive a cash prize of $5,000. This award recognizes the team or individual that has demonstrated exceptional innovation, technical prowess, and a deep understanding of the challenge statement. Their solution should exemplify the ability to create AI agents that can interpret complex, open-ended goals and execute them flawlessly. The second-place winners will be awarded $3,000. This prize acknowledges a highly impressive solution that shows a strong grasp of the challenge and delivers a functional, effective AI agent capable of understanding and acting on user intentions. While not the top winner, their work is still of high caliber and deserving of significant recognition. The third-place winners will take home $2,000. This award is for a solution that demonstrates a good understanding of the challenge and delivers a viable AI agent. Although it may not be as polished or comprehensive as the first and second-place solutions, it still shows promising potential and a solid foundation for future development.

Build innovative applications, agents, tooling, or infrastructure that combine AI/ML (including LLMs and autonomous agents) with Hedera network services. The focus is on demonstrating novel AI‑blockchain integrations that create real utility for developers or end‑users.

Build and deploy innovative Smart Contract based applications on Hedera. The focus is on leveraging Hedera's EVM compatibility and integration into the Ethereum ecosystem.

The Overall Winner is the best project out of both AI and EVM tracks. See more detailed descriptions in the respective track's section above.

Develop an innovative and efficient Gaming, DeFi, RWAs, or Stablecoin related project that seamlessly integrates the Avail Nexus SDK to share and transfer liquidity across chains. Top 2 projects that integrates Nexus SDK in a meaningful manner in their project is eligible for the prize. Integrate your dApp with the Avail Nexus SDK and use its crosschain features in your project for Gaming, DeFi, RWAs, Stablecoins, etc. Check out Project Ideas below for inspirations

One of the most powerful functionalities of the Avail Nexus SDK is bridgeAndExecute() that allows you to source funds from multiple chains and then call any arbitrary smart contract function in one SDK call. The project that displays the most innovative use of bridgeAndExecute() function while using the Nexus SDK shall win this prize. Check out Project Ideas below for inspiration

For the app that best showcases what’s possible when crypto fades into the background. This prize goes to the most compelling user-facing experience, something your non-crypto friends would actually want to use. Think intuitive design, smooth onboarding, and a clear user benefit.

This prize celebrates the most creative and useful application of stablecoin. Whether it’s payments, tipping, yield, or programmable finance, we’re looking for apps that showcase stablecoin as intuitive, scalable money rails.

For the sharpest onchain trading experience, whether it’s bots, dashboards, signal tools, or swap interfaces. This prize goes to the project that makes interacting with markets smarter, faster, or more user-friendly.

Build an application that sets the benchmark for simplicity and user experience in web3. We are looking for innovative solutions across the DeFi, Web3 Gaming and AI Agents domains.

Build your project using Hardhat 3 alpha as the main Solidity testing and network simulation tool

Intmax is an l2 for private and nearly free payments (think Tornado Cash + Plasma), the Intmax sdk is easy to use with deposit, transfer and withdrawal functions, implemented on the client side in around 100 lines of code. Perfect to add to any project that needs to make payments and transactions. Testnet app: https://beta.testnet.app.intmax.io/ Workshop: https://youtu.be/ZmKx8ey4uV4?si=RC5uEDloW-M8dAcH Team: @adompeldorius @LeonaHioki @electriceel21 The winners of this price should - Make use of INTMAX's Clientside SDK. - Focus on UX, for non-technical users. Example github: https://github.com/InternetMaximalism/intmax2-client-sdk/blob/main/examples/node/index.js

Delta-Neutral LP Strategies Create automated rebalancing systems for uncorrelated pairs. Pooled EulerSwap Instances Build shared liquidity management platforms. Custom AMM Implementations Design novel curve types for specific market conditions.

For DeFi, payments, stablecoins, or anything pushing the future of onchain finance.

For applications with an undeniable use-case and exceptional user experience.

We’re looking for sticky, culture-driven products — something fun, useful, and interactive. If it runs on Ronin and users want to try it out, we want to see it.Ship something real for a chain where users actually show up and use what you build.

Build a mobile-native ZK app using Mopro. We’re looking for projects that showcase seamless, user-friendly experiences that bring ZK into everyday mobile use. You’re free to choose any ZK circuit language—Circom, Halo2, Noir, or others—and any ZK protocol, such as Semaphore, MACI, zkEmail, Self Protocol, zkTLS, etc. Your app can be built in Swift, Kotlin, React Native, Flutter, or any other mobile framework. The only requirement is that the ZK proof must be generated client-side. Surprise us with your creativity—and show how ZK can feel invisible yet powerful to users.

This track rewards developers who demonstrate creative and impactful use cases leveraging 0G's unique capabilities - whether that's utilizing our storage throughput, infinitely scalable DA layer, decentralized AI compute network, or EVM-compatible chain. We want to see projects that couldn't exist without 0G's infrastructure. Example project categories (but not limited to): - AI-powered dApps with verifiable computation - Decentralized machine learning platforms - Storage solutions for massive datasets - On-chain gaming with AI components - DeFi protocols enhanced with AI

VibeJam – Build Freely with the Katana Starter Kit For flowstate coders, AI prompt wranglers, and vibesmiths who want to create without constraints. The VibeJam celebrates experimental, creative, and playful building using the Katana Starter Kit - a local, LLM-enabled developer kit that spins up a snapshot of the Katana chain for fast iteration and testing. There’s no rigid spec and no requirement to use specific primitives. Just build something cool, composable, and fun. Your project might be: - A new DeFi primitive with a unique mechanism - An AI-agent flow using Katana state - A meme-based yield game - A tool that helps other Katana hackers - A custom frontend for a Katana vault The only requirements: - Use the Katana Starter Kit - Deploy something to Katana Tips: - Join us for Forge on July 1st for demos, onboarding, and free Cursor licenses for qualifying hackers - Need inspiration? Explore the Katana Flywheel simulator (https://flywheel.bruno.id) or browse the starter kit repo for example contracts

A total of $2,000 [$1,000 cash prize + $1,000 in Fluence Credits] will be awarded to the most impactful use of Fluence for AI workloads. Goal Demonstrate a working AI project using CPU-only VMs from Fluence. Expectations > Efficient AI application deployed on Fluence VMs. > Examples: small/quantized models, inference APIs, agentic LLM backends. > Ideally, build toward CPU-only compatibility, no GPUs required.

A total of $2,000 [$1,000 cash prize + $1,000 in Fluence Credits] will go to the team that creates the most versatile and production-grade custom image Goal Provide a VM image or stack that is easy to reuse or build upon. Expectations - Create a reusable VM image or toolchain. - Examples: dev-ready LLM stack, RPC nodes,Vaidator nodes, e.g., sentry pattern or clustering across VMs, or decentralized indexers. - Include image reference, Terraform/Ansible deploy and usage docs. - Must be modular and forkable by others.