DEVMatch Hackathon 2025

**Objective**: Build the most impressive and complete project that showcases the full potential of the Sui ecosystem. **Key Tasks**: - Combine multiple Sui technologies (e.g., zkLogin, Move smart contracts, Kiosk, Walrus, Seal) to deliver a cohesive solution. - Focus on delivering strong technical execution, creative problem-solving, and practical utility. - Ensure smooth user experience, scalability, and thoughtful design. **Bonus Points**: - Seamless integration of two or more Sui-native tools or standards. - Demonstrates real-world relevance or potential for future growth. - Clean codebase and well-documented architecture. This track is perfect for teams who want to build beyond the constraints of a single use case and demonstrate the best of what’s possible on Sui. ### Project Submission Form - [**https://go.sui.io/suibounty-devmatch2025**](https://go.sui.io/suibounty-devmatch2025) ### **Submission Requirements** - GitHub repository - Technical documentation - 5 minute demo video walkthrough. - Must be open-source and meet basic security and usability standards.

- **Objective**: Build an on-chain marketplace utilizing Sui smart contracts as the backend. - **Key Tasks**: - Design and implement core marketplace smart contracts using Move. - Support basic functionality (listing, purchasing, transferring assets). - You can either use the Kiosk standard, or implement another form of trading - **Resources:** - [Sui Move Intro Course](https://github.com/sui-foundation/sui-move-intro-course) (lesson 4 and 5) - [Sui Kiosk Standard](https://docs.sui.io/standards/kiosk) ### Project Submission Form - [**https://go.sui.io/suibounty-devmatch2025**](https://go.sui.io/suibounty-devmatch2025) ### **Submission Requirements** - GitHub repository - Technical documentation - 5 minute demo video walkthrough. - Must be open-source and meet basic security and usability standards.

- **Objective**: Create a password manager using Walrus and Seal as backend infrastructure. - **Key Tasks**: - Integrate Walrus and Seal for secure, privacy-preserving storage. - Implement user-friendly encryption and retrieval workflows. - Ensure compliance with best practices in data security. - **Resources:** - https://github.com/MystenLabs/walrus-docs - https://github.com/MystenLabs/seal ### Project Submission Form - [**https://go.sui.io/suibounty-devmatch2025**](https://go.sui.io/suibounty-devmatch2025) ### **Submission Requirements** - GitHub repository - Technical documentation - 5 minute demo video walkthrough. - Must be open-source and meet basic security and usability standards.

- **Objective**: Create an application that integrates and utilizes zkLogin. - **Key Tasks**: - Implement zkLogin as the authentication method. - Showcase a real-world use case or user flow with zkLogin. - Provide seamless UX and secure session handling. - **Resources:** - https://docs.sui.io/concepts/cryptography/zklogin - https://docs.enoki.mystenlabs.com/ ### Project Submission Form - [**https://go.sui.io/suibounty-devmatch2025**](https://go.sui.io/suibounty-devmatch2025) ### **Submission Requirements** - GitHub repository - Technical documentation - 5 minute demo video walkthrough. - Must be open-source and meet basic security and usability standards.

Prize Description: This track celebrates teams who ship the most creative or technically impressive application using Scaffold-ETH 2, the modern developer stack for rapid Ethereum dapp development. Whether you’re building a DeFi app, DAO dashboard, or NFT experience, we want to see you push the limits of what SE-2 can do. What We’re Looking For: - On-chain app bootstrapped using Scaffold-ETH 2 - High-quality implementation of smart contracts and frontend integration - Clear use of SE-2 features like hooks, components, local chains, deploy flows, etc. - Thoughtful UX and developer ergonomics - Bonus points for extending Scaffold-ETH 2 with custom modules or contributing improvements upstream

Prize Description: This track rewards the best application that leverages stablecoins on Ethereum to enable fast, cost-effective, and user-friendly micropayments. What We’re Looking For: - Apps using stablecoins (e.g. USDC, DAI, GHO) for payments below <$1 - Emphasis on user experience and cost-efficiency - Integration with Layer 2s (e.g. Optimism, Base, Arbitrum) or account abstraction for smoother UX - Use cases could include: tipping platforms, in-game payments, metered APIs, recurring payments, etc. - Bonus points for novel monetization models or integrations with open source/public goods

Prize Description: Prediction markets are powerful tools for aggregating collective intelligence, and Ethereum has the infrastructure to make them more trustless and permissionless. This track recognizes the best developer tooling, libraries, or infrastructure that improves how prediction markets are built, run, or interacted with on Ethereum. What We’re Looking For: - Tools that help developers or market creators (e.g. oracles, UI kits, liquidity tools, analytics dashboards) - Integrations with protocols like Polymarket - Support for creating or resolving markets in a decentralized fashion - Innovations in market UX, automated market makers (AMMs), or dispute resolution

**Reward pool**: 2,000 USD **Reward structure:** Up to 750 USD Up to 500 USD Up to 250 USD **Participation reward:** Up to 500 USD shared among all participants Please note: The Oasis Foundation reserves the right to adjust the reward structure based on the quality and relevance of the submissions received. **Judging Criteria** Potential Impact: How big an impact could the project have? Confidentiality: Does the project utilize the unique capabilities of ROFL and Sapphire to solve an important problem? UX: Does the design make the user experience seamless? Innovation: How well does the project combine or extend ROFL with technologies that weren’t used before? Implementation Quality: Submitted code is working and uses Oasis tooling correctly. Bonus ROFL-Sapphire integration points: Your dApp correctly authenticates ROFL transactions via the roflEnsureAuthorizedOrigin subcall and uses Sapphire’s unique precompiles and confidentiality to assure that confidential data never leaks out of the TEE. **Qualification Requirements** - Demo video up to three minutes long - A text description explaining the features and functionality of your project - An open-source Github repository with a complete README - A way to test the project, including a link to the app or testing instructions - Complete the submission form by the final deadline - Optional: Present your hack at the booth that you don’t get overlooked Workshop dates 21st July - 1st Aug (weekends included) from 6pm to 9pm Workshop 1 (Sapphire) - 23rd July 7pm GMT+8 (Bernhard) Workshop 2 (Rofl) - 30th July 7pm GMT+8 (Bernhard) **What to build:** Explore the Oasis Network’s familiar development environment with industry-leading confidentiality. Discover a new world of opportunities for developers across all EVM networks. New teams who are building in crypto are invited to integrate Oasis technology into their early-stage application to improve user experience and on-chain data confidentiality. Builders who have already launched applications in crypto are also invited to explore Oasis confidential computing for the benefits it could add to your existing userbase. **What is Sapphire:** Oasis Sapphire — the first and only confidential EVM in production — provides developers with the ability to build EVM-based dApps with customizable levels of privacy. Sapphire’s confidential computing gives builders the tools to integrate privacy at any point of the spectrum: 100% private, 100% public, or anywhere in between. **What is ROFL:** ROFL (Runtime Off-Chain Logic) is a framework that adds support for off-chain components to runtimes like Oasis Sapphire. It enables non-deterministic behavior and access to remote network resources. ROFL also allows for off-chain components to seamlessly communicate with the onchain realm to bring about full composability across different blockchain platforms and off-chain computation stacks.

 ROFL enables decentralized agents powered by AI to have private state and interact with the world including other agents via transactions, queries and oracles, making it much easier to run complex workloads in a decentralized fashion. **Ideas to Get Started** **AI Agents** With Sapphire, you can store agent private keys on-chain and then build logic within a smart contract, and with ROFL, you can verify offchain agent workloads, in order to pursue use cases in trading, admin, security, wallets, collaborative art, etc. Oasis provides you all the tools to build truly autonomous and trustless agents. Generate private keys from within a TEE, store secrets on the Confidential EVM and let your agent loose on socials or DeFi dApps. **Trustless Oracles ** Because the ROFL framework enables verifiable and confidential off-chain computation with internet access to web2 and web3 APIs, governed by the policies stored on-chain, there’s no need to trust the Oracle operator for fetching the price quotes and much more. You can even submit transactions to other chains. **DeFi** Privacy-preserving applications around dark pools, cross-chain liquidity, dutch auctions for tokens, ICO price discovery via auctions, DEX & cross-chain swaps, and more! **Gaming** Break the link between in-game profiles and on-chain accounts, create trustless, hidden fog of war mechanics, explore the agent-gaming design space, all to build captivating games! **Other** Account abstraction and gasless wallets. Trustless cryptography with confidential contracts. Applications for encrypted metadata, secrets, and key management. **Resources** Oasis Cheatsheet https://drive.google.com/file/d/1Ab1mt-tYi5J72xcylB3OlwfpFGfd-NdU/view Technical Workshop — Understanding the Oasis Privacy Layer https://www.youtube.com/watch?v=gD-_cgV3Nz4 Sapphire 101: Working with a confidential EVM https://www.youtube.com/watch?v=c_N8edT41-Q Oasis Testnet Faucet (extra TEST tokens for ROFL developers on-demand) https://faucet.testnet.oasis.io/ Oasis ROFL Framework https://docs.oasis.io/rofl/ Oasis Sapphire Paratime (EVM Compatible) https://docs.oasis.io/dapp/sapphire/ Oasis Social Media Channels https://docs.oasis.io/get-involved/ Oasis Network Documentation https://docs.oasis.io/ Demo Dapp https://github.com/oasisprotocol/demo-chat Oasis Github (Sapphire) https://github.com/oasisprotocol/sapphire-paratime ROFL Explorer https://explorer.oasis.io/testnet/sapphire/rofl/app Example agent framework implementations: Oasis TEE in Eliza: https://github.com/elizaOS/eliza/blob/v0.25.19/docs/docs/advanced/eliza-in-tee-oasis.md Oasis TEE in Virtuals' GAME: https://github.com/game-by-virtuals/game-node/tree/main/game-starter

**Acceptance Criteria** - Create a new Subgraph - Developers must create a Subgraph that indexes on-chain data of supported or unsupported networks. This data must be used in your application. - Developers must provide a GitHub repository with the source code of the Subgraph. - (Nice-to-have) Developers can also convert their Subtreams into Subgraphs for more complex applications. - Use an existing Subgraph - Developers must link to the Subgraph they are using from the mainnet or testnet explorer. - (Bonus) Developers can build and convert Substreams into Subgraphs. Developers must clearly state where they are using the Subgraph in their source code. - (Bonus) Use Token API Developers must clearly state where and how they are using the Token API in their source code. - Developers must use the Token API to fetch token metadata (e.g., symbol, name, decimals, price) and demonstrate its usage within your application logic. -(Optional) Fallback to a published Subgraph for token metadata if Token API is not applicable on the selected network. # **Resources for Developers** – How to Get Started with Subgraphs & Token API **Subgraph** Subgraphs are an indexing solution provided by The Graph protocol. They allow you to efficiently query on-chain data from supported blockchains like Ethereum, Polygon, Arbitrum, and more. Subgraphs process blockchain data and make it available via GraphQL APIs for your dApp. 🔴 More about How to Build and How to Query a subgraph: https://thegraph.com/blog/hackathon-resources/ **Token API** The Token API provides a unified and simplified way to retrieve token metadata like symbol, name, decimals, and price. It’s especially useful when working with tokens across multiple DeFi and NFT protocols. 🔴 More info and examples: https://github.com/graphprotocol/examples/tree/main/token-api

Up to 2,000 USD (paid out in USDT/C) total prize pool for the BGA Track, with breakdown: 🥇 First Place – 1000 USD 🥈 Second Place – 600 USD 🥉 Third Place – 400 USD Selected winners may receive invites into BGA's incubation program* with benefits such as: ✅ Equity-free grants ✅ Access to BGA’s global mentor & advisor network ✅ Co-marketing and amplification opportunities ✅ Pitch support and fundraising exposure ✅ A feature article in the BGA Pulse ✅ Invite to the global BGA Web3 Oscar *note that it is very rare for hackathon projects to enter our incubation as we face a pipeline of institutional and established projects. However, our eyes are always open to unique, powerful prototypes and ideas for real-world good. Will your project be the first? 🌱 Suggested Focus Areas We are aligned closely with the United Nations 17 Sustainable Development Goals (find out more here). In your submission, do let us know which of the 17 SDGs you are mainly focused on! Some suggested further focus areas are: Security and Transparency: Blockchain-based supply chain tracking ensures authentic product origins and prevents fakes. Global Education Development: Verifiable blockchain credentials issued by institutions to prevent diploma fraud and increase global accessibility. Life and Health: Medical record sharing across borders via encrypted blockchain to enable faster, more accurate diagnosis and treatment. Sustainable Development: Carbon credit registries for transparent emissions tracking, allowing businesses to prove and trade verified carbon offsets. Reduction of Inequality: Decentralized ID systems for underserved populations, allowing access to financial services, aid distribution, and social benefits. 🛠 Track Rules ✔ Projects must align with the mission of blockchain for public good ✔ Submit a pitch deck + demo video before the deadline in the application form ✔ Must be an original build created during the hackathon Project Submission Form - [**https://moledao.io/event/186a7a1c-274b-4d26-9679-c738f73033e7**](https://moledao.io/event/186a7a1c-274b-4d26-9679-c738f73033e7)

🏆 5 Winning Teams | 💰 $100 Cash + $100 Subscription Vouchers per Team ✅ Submission Criteria Web3 Focus: Projects must leverage Web3 technologies such as: - Blockchain - Smart contracts - Decentralized applications (dApps) - DAOs - Token economies - DeFi or decentralized identity systems **Real-World Relevance**: Solutions should address a practical problem or use case with potential for real-world impact or adoption. **Originality**: Projects should demonstrate creativity, innovation, or a unique twist on an existing concept. **Functionality**: A working demo or prototype is expected — even a basic one — to show core features in action. 💡 **Bonus Criteria** Teams that integrate Non-Fungible Agents (NFAs) into their projects will receive bonus points. Example use cases: - On-chain trading AI Agents - Wallet portfolio AI Agents Project Submission Requirements : 1. A screen recording as a proof the published app is built by using ChatAndBuild from scratch. ( Youtube, Twitter, Instagram Reels, etc.). Please tag ChatAndBuild in the post. 2. Provide the published app link generated with ChatAndBuild. 3. Builders' stories submission, according to a list of questions provided.

Select this track if you're building on Ethereum to be eligible for the prizes!