Provided by Aleph CloudProvided by Amazon Web Services (AWS)LayerZero is an omnichain interoperability protocol that enables smart contracts to read from and write state to different blockchains. Developers can build omnichain applications (OApps) that can push/pull state, transfer value, and call smart contracts on other networks as if they were on a single blockchain.
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.
How to Qualify
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.
How to Qualify
In this workshop, you’ll learn how to move ERC20 tokens, and other data types, between blockchains in under five mi...
06:00 PM CEST — Friday, Jul 4, 2025 in Workshop Room 1
1inch provides a suite of powerful tools that enable developers to build smooth DeFi experiences on Ethereum, Ethereum L2s, and beyond. Hackers can utilize our open-source SDKs, smart contract protocols, and robust APIs to build onchain applications. In this hackathon, we are giving builders three distinct challenges:
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.
Requirements:
Build advanced strategies and hooks for the 1inch Limit Order Protocol.
Project ideas:
Existing examples built on top of Limit Order Protocol include ranged sells and dutch auctions (links in hackathon documentation)
Requirements:
Judging criteria:
Utilize 1inch's infrastructure to help build your application
Requirements:
Judging Criteria:
We will dive into the design of 1inch's various swap protocols. This includes Classic Swap (AMM/PMM aggregation), F...
06:00 PM CEST — Friday, Jul 4, 2025 in Workshop Room 2
Building a mini app means you will get instant exposure to the 23 million World App users. All World App users already have an integrated wallet and free transaction fees on World Chain (part of the super chain). We will be working closely with teams that want to build a real app reaching millions of people this weekend. To be considered for the Mini App bounties you MUST use any of the Minikit SDK commands found on our docs. Learn more: https://www.youtube.com/watch?v=QJ0htHP6lb0
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)!
Oasis technology provides everything you need for verifiable, confidential compute. It is designed to support all your needs either onchain via Sapphire or offchain via ROFL leveraging Trusted Execution Environments (TEEs). It is completely chain agnostic and creates the optimal environment for building and running DeFi, AI, RWA and many other applications in different sectors that need high integrity, security and privacy.
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.
Qualification Requirements
Support our continued improvement of developer experience by providing useful feedback to us.
Awarded to the project/individual who provided the most useful developer experience feedback to any part of our stack.
Dive into Oasis Sapphire and ROFL with this workshop! You'll learn to build secure, efficient apps using encrypted ...
03:30 PM CEST — Friday, Jul 4, 2025 in Workshop Room 2
Zircuit is the AI powered blockchain for secure, automated finance. All transactions on Zircuit are protected by AI, making it the safest environment for both users and developers. Zircuit is designed for internet scale transactions and applications, with maximum trust and scalability.
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:
Winning projects may also include user journeys, token mechanics (if applicable), market research, and plans for future development.
This workshop will give you an introduction to winning prizes using Zircuit. We’ll cover what we think makes a top ...
04:00 PM CEST — Friday, Jul 4, 2025 in Workshop Room 3
Chainlink is the industry-standard decentralized computing platform powering the verifiable web. Chainlink has enabled over $19 trillion in transaction value by providing financial institutions, startups, and developers worldwide with access to real-world data, offchain computation, and secure cross-chain interoperability across both private and public blockchains. Chainlink powers verifiable applications and highly reliable markets for banking, DeFi, global trade, gaming, and other major sectors.
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!
Each project must use a Chainlink service in some form to make a state change on a blockchain, otherwise it will not be eligible for the Chainlink core prizes. This means that a front end simply reading from Chainlink Data Feeds doesn't count. Using Chainlink inside your smart contracts is required.
While all project submissions are evaluated holistically, there will be bonus points given to projects that use multiple Chainlink services in a meaningful way.
Please let us know how you use Chainlink in the project description.
Join us and learn how to leverage the Cross-Chain Token (CCT) standard with Chainlink CCIP to create cross-chain to...
04:30 PM CEST — Friday, Jul 4, 2025 in Workshop Room 1
The ``Flare Time Series Oracle (FTSO) provides decentralized data feeds to the Flare network. The Flare Data Connector (FDC) validates external data for Flare's EVM state (it's Web2Json attestation types can fetch arbitrary Web2 data). The Secure Random protocol generates a secure random number on-chain every 90 seconds. The FAssets bridge XRP to Flare to use in smart contracts and build DeFi apps. See more info on notion - https://www.notion.so/flare-network/Flare-Hackathon-Guide-ETHGlobal-Cannes-204d502e6fa680d284e3e6d8df6f695d
Use protocols on Flare blockchain in an innovative and world changing way! Build DApps utilising at least one of Flare’s Enshrined Data Protocols:
DApps must make use of at least one of Flare's enshrined Data Protocols.
Dapps must address real-world problems, or cater to specific use cases to be impactful.
Add Feedback in the README describing your experience with building on Flare.
Most innovative external data source use case or most innovative cross chain application secured by Flare’s protocols.
Show innovation by utilizing real world data in an on chain application.
If you are using an external data source, provide a link to it's API.
Can be combined with MAIN track or other bounties.
In this workshop we will demonstrate how you can bring arbitrary Web2 data onto the Flare chain, using the Flare Da...
03:30 PM CEST — Friday, Jul 4, 2025 in Workshop Room 3
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:
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:
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).
What we're looking for:
Come at our workshop to have an overview of our tracks explained. During this workshop you will know which are the ...
04:30 PM CEST — Friday, Jul 4, 2025 in Workshop Room 3
Flow is a layer one blockchain with a powerful smart contract language (Cadence) and full EVM equivalence (any Solidity, smart contract, or protocol that works on Ethereum or an EVM L2 works on Flow). The network was designed from the ground up to enable consumer crypto applications that scale to mainstream audiences and seamlessly connect to digital ecosystems. It is based on a unique, multi-role architecture, and designed to scale without sharding, allowing for massive improvements in speed and throughput while preserving a developer-friendly, ACID-compliant environment.
Flow has been architected with a clear vision for the future of consumer crypto, and meticulously designed to address the shortcomings of earlier blockchains to ensure scalability, usability, and efficiency are not simply an afterthought. By incorporating critical protocol-level primitives, such as account abstraction and on-chain randomness, as well a powerful transaction model and scalability without sharding, Flow sets itself apart as a blockchain made for those interested in building apps for widespread adoption and developer-friendly innovation.
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.
• Deploy a smart contract or run transactions on Flow Testnet or Flow Mainnet
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.
• Deploy a smart contract or running transactions on Flow Testnet or Flow Mainnet • Your submission must showcase a meaningful cross-chain DeFi use case
Want to ship faster? In this hands-on workshop, we’ll show you how to deploy Solidity contracts to Flow EVM in minu...
05:30 PM CEST — Friday, Jul 4, 2025 in Workshop Room 1
Circle's developer platform gives you the tools to integrate USDC and blockchain-based payments into your application, with a suite of smart contracts, APIs, and SDKs designed to get you off the ground quickly and securely
Build an application that enables multichain USDC payments and payouts using Fast Transfers from CCTP V2.
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.
Submissions will be evaluated based on the following parameters. Please be clear what bounty you are submitting for as a part of your submission!
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.
Submissions will be evaluated based on the following parameters. Please be clear what bounty you are submitting for as a part of your submission!
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.
During this session, attendees will learn how to build with USDC and the Circle Platform — a full-stack suite of de...
05:00 PM CEST — Friday, Jul 4, 2025 in Workshop Room 2
ENS (Ethereum Name Service) is a decentralised naming protocol for the new internet.
ENS enables you to have a portable web3 username and profile. Use it to establish an online identity, simplify crypto payments for any blockchain, host decentralised websites, and more. ENS supports all DNS names (.com, .xyz, etc.) in addition to our native .eth TLD.
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.
It should be obvious how ENS improves your product and is not just implemented as an afterthought. Your demo must be functional and not just include hard-coded values. Upon submission, your project showcase must have a video recording or link to a live demo (ideally both).
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!
It should be obvious how ENS improves your product and is not just implemented as an afterthought. Your demo must be functional and not just include hard-coded values. Upon submission, your project showcase must have a video recording or link to a live demo (ideally both).
Learn all about ENS (Ethereum Name Service), the decentralised naming protocol used by Coinbase, Uniswap, Venmo, an...
03:30 PM CEST — Friday, Jul 4, 2025 in Workshop Room 1
The Sui Stack is a modular ecosystem of composable infrastructure layers purpose-built for trustless coordination, privacy-preserving data workflows, and scalable app logic. Rather than provide a one-size-fits-all platform, the stack empowers builders to compose decentralized functionality — storage, access control, compute, and coordination — based on their specific use case.
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!
In this workshop, we’ll introduce Walrus, a decentralized storage network designed to power the next generation of ...
04:30 PM CEST — Friday, Jul 4, 2025 in Workshop Room 2
The Graph is the open, universal data layer for web3. Since launch, The Graph has powered a growing decentralized ecosystem and become the industry standard for onchain data indexing through Subgraphs. As AI and new use cases emerge, The Graph is evolving, expanding its capabilities to support developers, analysts, AI agents, and more. With real-time access to blockchain data via Substreams, plug-and-play data from the Token API, and a growing suite of AI-driven tools, The Graph helps teams build faster using high-quality, composable data. Stay informed about The Graph's innovations and join the community shaping the decentralized future.
🥇 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
Qualification Requirements: • Your project must include the grc20-ts library in its codebase (package.json) • You must demonstrate usage of the library to post structured offchain knowledge about your dapp to the Knowledge Graph • You must clearly document what was published and how it improves composability or transparency
🥇 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
Qualification Requirements: • The application must use the Knowledge Graph Framework • Data must be structured as entity-relations using the GRC-20 standard
Bonus points for: • Creativity • Composability with other apps or spaces • Integration across multiple datasets
Note: Meet us at The Graph’s booth for more information! 👀
🥇 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!
NOTE: Subgraphs or Substreams purely created with "subgraph init" are not eligible for submission.
Hypergraph is an application development framework that enables builders to create projects that draw from private,...
05:00 PM CEST — Friday, Jul 4, 2025 in Workshop Room 3
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, or offchain, without sharing any private information with third parties.
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.
To be eligible projects must:
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.
To be eligible projects must:
Fetch.ai's vision as a founding member of the ASI Alliance is to create a open AI Agent marketplace. We are empowering developers to build on our platform that can connect services and APIs without any domain knowledge. Our infrastructure enables ‘search and discovery’ and ‘dynamic connectivity’. It offers an open, modular, UI agnostic, self-assembling of services.
Our technology is built on four key components: uAgents - uAgents are autonomous AI agents built to connect seamlessly with networks and other agents. They can represent and interact with data, APIs, services, machine learning models, and individuals, enabling intelligent and dynamic decision-making in decentralized environments. Agentverse - serves as a development and hosting platform for these agents. Fetch Network - underpins the entire system, ensuring smooth operation and integration. ASI:One - A Web3-native large language model (LLM) optimized for agent-based workflows.
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.
In order to qualify participants must ensure the following criteria is met:
For detailed explainer on project submissions please view our hackpack: https://fetch.ai/events/hackathons/eth-global-cannes/hackpack or simply follow official Eth Global project submission criteria:
A complete showcase of the Fetch.ai and ASI Alliance technology suite with a focus on AI Agents: The workshop will ...
03:00 PM CEST — Friday, Jul 4, 2025 in Workshop Room 2
*Hedera also has SDKs for Go and Swift!
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.
Utilise at least one Hedera service: Smart Contracts (EVM), Token Service, Consensus Service, Scheduled Transactions, or Mirror Node.
Incorporate AI in a material way e.g. Hedera Agent Kit SDK, Hedera Eliza Plugin, Federated Learning, AI Data Marketplaces.
Provide all source code in public GitHub repo(s)
Verify any smart contracts on Hashscan
Include a demo video (≤ 5 minutes) explaining what was built and how to run it
Optional enhancements earn extra points:
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.
Deploy a Smart Contract on Hedera Mainnet, Testnet, or Previewnet using the Hedera EVM.
Verify all Smart Contracts on Hashscan
Provide all source code in public GitHub repo(s)
Include a demo video (≤ 5 minutes) explaining what was built and how to run it
Optional enhancements earn extra points:
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.
For this track, you must qualify for either the AI on Hedera Track OR the Hedera EVM Track. See more detailed descriptions in the respective track's section above, including optional enhancements to earn extra points.
Join us for an exciting 20-minute live coding session where we'll collaboratively build a Hedera dApp in real-time!...
05:30 PM CEST — Friday, Jul 4, 2025 in Workshop Room 2
The Avail Stack helps you build powerful apps faster. Scale and connect apps between multiple networks effortlessly, share liquidity, tap into existing app functionality and consolidate tokens spread across multiple networks into a single, unified token balance.
During this EthGlobal hackathon, Avail is unveiling the v0 release of Avail Nexus, which enables the following features that developers can leverage:
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
Avail is unveiling the v0 release of Avail Nexus, which enables the following features that developers can leverage...
05:00 PM CEST — Friday, Jul 4, 2025 in Workshop Room 1
Privy is customizable wallet infrastructure that helps developers build secure and scalable user-friendly apps on crypto rails with low-level APIs and end-to-end SDKs.
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.
Saga offers developers the unique ability to launch their own EVM-compatible Layer 1 blockchains, known as Chainlets, with infinite horizontal scalability. Saga provides recycled gas tokens, enabling developers to implement zero-gas transactions for their users. This infrastructure is particularly well-suited for building high-performance applications like games, entertainment platforms, DeFi protocols, and social applications, where dedicated resources and customizable environments are crucial.
By building on a Saga Chain, developers gain the power of a dedicated blockchain without the traditional complexities and costs, unlocking unprecedented scalability and customization for their projects.
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.
Hardhat is a development environment to compile, deploy, test, and debug your Ethereum software.
Hardhat 3 introduces Solidity tests, performance critical components in Rust, multichain support across the board, OP Stack simulation, revamped build system, a modernized CLI and plugin system, and a lot more.
Build your project using Hardhat 3 alpha as the main Solidity testing and network simulation tool
Usage of a Hardhat release 3.0.0-next.*. Usage of Hardhat 2 won't qualify.
INTMAX is a next-generation Ethereum Layer 2 solution designed for ultra-scalable and privacy-preserving payments. Unlike traditional rollups, INTMAX is a stateless zk-rollup that uses a radical architecture inspired by Plasma but rebuilt with modern zero-knowledge proofs. It enables transactions with as little as ~5 bytes of on-chain data per user, making it highly efficient even under heavy network congestion.
INTMAX prioritizes:
- Privacy by default – transactions are unlinkable and off-chain
- Constant Near-zero gas fees – no matter how many users are transacting
- Decentralized scalability – without compromising Ethereum security
It also introduces Privacy Mining, an innovative incentive system that rewards users for helping others stay private — turning privacy into a public good.
INTMAX supports developers through its Developers Hub, offering ecosystem grants, technical advisory, business growth support, and access to funding and marketing resources.
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
Example github: https://github.com/InternetMaximalism/intmax2-client-sdk/blob/main/examples/node/index.js
EulerSwap is a revolutionary DEX that combines automated market making with Euler's lending infrastructure and Uniswap v4's hook architecture. It creates a unified system where the same capital can facilitate swaps, earn lending yield, and serve as collateral - eliminating capital fragmentation.
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.
Mantle is building the largest sustainable hub for on-chain finance with core innovative pillars Mantle Network, mETH Protocol, Function BTC and Mantle Banking. Mantle Network, being one of the primary pillars, is a general-purpose L2 with a vision to support the most killer applications in consumer finance and beyond.
For DeFi, payments, stablecoins, or anything pushing the future of onchain finance.
For applications with an undeniable use-case and exceptional user experience.
Ronin is the #1 EVM-compatible gaming chain, and is expanding to a full-fledged consumer ecosystem. If you’re looking for real users to give you dApp a shot, you’re in the right place at the right time.
• Top gaming chain by real users with 800K MAU and a crypto native userbase • Battle-tested distribution network spanning Southeast Asia, USA, and Latin America • Easy mainnet deployment with robust developer tools and third-party infrastructure available • Cult-like community that loves to experiment with new projects • Possible grant and BD support from Sky Mavis, inventors of Axie Infinity and Ronin Network
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.
Mopro is a developer-friendly toolkit that makes building native mobile apps simple and efficient.
We believe native apps offer better performance and user experience than browser-based solutions, and we’re here to remove the friction of mobile development. Mopro provides: 🚀 Easy-to-use CLI tools 🧱 Ready-to-go templates 📚 Helpful documentation No need to be a mobile expert—just focus on your idea.
We initially support zero-knowledge (ZK) proof systems including: Circom, Halo2 and Noir. Using UniFFI, you can also bring in any Rust crate and define the functions you want to run natively on mobile.
Tap into native mobile capabilities—such as biometrics , GPS 📍, NFC 💳, camera 📸, photo gallery 🌅, Bluetooth 🛜, push notifications 🔔, and more—to expand what Web3 apps can do beyond the browser.
Let’s redefine what’s possible on mobile!
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.
0G is the first decentralized AI operating system (dAIOS) that provides the complete infrastructure stack for building AI-powered applications on-chain. Developers can leverage 0G's four core components: 0G Storage , 0G DA (infinitely scalable data availability layer), 0G Compute Network (decentralized AI inference and training), and 0G Chain (EVM-compatible blockchain).
Build anything from AI-powered dApps and intelligent NFTs to decentralized machine learning platforms and on-chain games. 0G offers necessary SDKs, making integration seamless for Web3 developers looking to add AI capabilities to their applications.
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):
Technical Integration: Must integrate at least ONE core 0G component. Integration must be functional and demonstrate real usage
Working Prototype (REQUIRED) Fully functional demo deployed on 0G testnet. Must be accessible for judging (provide access credentials if needed)
katana's edge we designed katana for what actually matters to defi users and builders:
real yield
deep liquidity
productive capital
katana is built to make capital productive by aligning users, core apps, and protocol revenue yield: from protocol-native revenue
liquidity: owned by the network
incentives: sustained, and flowing to active users via core apps and KAT holders via vote-escrow
no token printing, no mercenary capital, no fractured liquidity
just a system designed for the total value not to be locked, but productive: productive TVL
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:
The only requirements:
Tips:
Judging Criteria:
Learn to dive into Katana development with speed and efficiency and - most importantly - safe AI use!
05:30 PM CEST — Friday, Jul 4, 2025 in Workshop Room 3
Fluence is a DePIN enabling a cloudless compute platform that provides a resilient, open and low-cost alternative to traditional cloud computing. The platform aggregates CPU resources from enterprise-grade data centers around the world in a global, decentralizde, resilient and cost-effective DePIN platform, allowing users to go cloudless and avoid vendor lock-in and subjective deplatforming.
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.
Keep your repository private until submission. Add @justprosh as collaborator before the deadline.
Include a `README.md with:
What it does: Project purpose and overview. How to set it up: Full setup instructions. How to run it: Runtime guidance and usage steps. Examples: Demo inputs/outputs, screenshots, or API calls.
You must:
Deploy your project on Fluence Virtual Servers Provide one of the following: - A public endpoint + usage instructions + VM id or - A Terraform or Ansible script to launch your environment on a Fluence VM
Include an open-source license (e.g., MIT or Apache 2.0).
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
Keep your repository private until submission. Add @justprosh as collaborator before the deadline.
Include a `README.md with:
What it does: Project purpose and overview. How to set it up: Full setup instructions. How to run it: Runtime guidance and usage steps. Examples: Demo inputs/outputs, screenshots, or API calls.
You must:
Deploy your project on Fluence Virtual Servers Provide one of the following: - A public endpoint + usage instructions + VM id or - A Terraform or Ansible script to launch your environment on a Fluence VM
Include an open-source license (e.g., MIT or Apache 2.0).
Unlock 75% Cost Savings with Decentralized Infrastructure — join our hands-on workshop to deploy dApps on Fluence's...
04:00 PM CEST — Friday, Jul 4, 2025 in Workshop Room 1
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