Give your users the power of efficient cross-chain swaps with our brand new Fusion+ mode! Skip bridging entirely with 1inch Fusion+. Your users simply pick the tokens they want to swap, sign a message, and let our Fusion+ system do the rest. The funds on the destination chain will be available in seconds!

The Developer Portal APIs are the gateway to all things 1inch. Use it to get quotes from our multiple swap protocols and explore all the ways it can save you time and effort when building your dApp by giving you the onchain data you need with a simple REST call. --- Available APIs include: - Wallet balances - Token prices - Transaction history - Transaction traces - and more! --- Explore all the APIs in our documentation (linked below) and find how to incorporate them into your project!

Did you know 1inch can efficiently track portfolio performance for wallets across Ethereum and many L2s? Integrate our portfolio API into your application and give your users visibility into their balances and profits!

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)!

Build practical DeFi applications on Rootstock and/or RIF technologies. We’re looking for accessible, efficient tools that redefine everyday finance, with a special emphasis on yield optimization to maximize user returns. 🔸Lending protocols 🔸Decentralized exchanges (DEXs) 🔸Yield farming strategies 🔸Liquidity pools 🔸Insurance protocols 🔸Decentralized credit scoring 🔸Trading bots

Build high-quality decentralized applications (dApps) on Rootstock and unleash your creativity. We’re looking for innovative solutions, and while not required, integrating AI-driven tools or techniques will earn you bonus points for showcasing advanced innovation. 🔸Ai-powered smart contracts or analytics 🔸Ai Agents 🔸Real World Assets (RWA) tokenization 🔸Decentralized Physical Infrastructure Networks (DePIN) 🔸Privacy-preserving smart contracts

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.

Flow is seeing an explosion of growth in DeFi on the network with some of the fastest TVL growth in recent months. Flow offers many benefits for DeFi applications such as fast transactions, low costs, and mainstream scalability, are available natively, without any additional code changes to solidity contracts. This bounty is looking for projects that take DeFi to the next level and make it more accessible to everyday people. Interested in building an app that integrates with Flow’s premiere token launchpad? Come by our booth to get connected.

Cadence is an ergonomic ‘resource oriented’ smart contract development language that allows developers to extend their EVM apps in powerful ways, unlocking cutting-edge UX as well as functionality. Cadence makes it easy to batch transactions natively, easily get onchain random values without needing an oracle, sponsor transaction fees and so much more.

Create a practical, high-impact application utilizing the Base blockchain and Nodit's advanced suite of development tools. Projects should highlight innovative ways to harness blockchain data, improve user experience, and demonstrate significant real-world utility. Winning applications will effectively showcase Base’s capabilities integrated seamlessly with Nodit's infrastructure.

Develop an useful multi-chain application that maximizes interoperability across various EVM-compatible blockchains, leveraging Nodit's comprehensive Web3 Data APIs and tools. Submissions should emphasize innovative methods for data integration, analysis, and insight generation, showcasing how Nodit's infrastructure enables powerful cross-chain functionality. Projects ideally will address existing multi-chain interoperability challenges and provide sophisticated solutions to enrich the broader Web3 ecosystem.

No rules, no limits — just build something awesome on Polygon. If it runs on Polygon, it’s eligible. We want to see your creativity, your hustle, and your edge. This is the open category for hackers who think outside the box. Here are some 🧰 Resources You Can Use: • Use the Polygon MCP Server. Model Context Protocol (MCP) is an open protocol that allows large language models to subscribe to and consume structured data from various sources (e.g. APIs, on-chain data, filesystems). Build adapters that connect agents to real-time data (e.g., blockchain state, weather APIs, docs, Slack, Notion, Discord). • Use GOAT SDK by Crossmint - the largest agentic finance toolkit for AI agents. GOAT leverages blockchains, cryptocurrencies (such as stablecoins), and wallets as the infrastructure to enable agents to become economic actors. • Use the Social Agent Toolkit by Sentient to create your own AI agents on Twitter, Discord, and Telegram. Make your agents verifiable by deploying inside AWS Nitro Enclaves with the Sentient Enclaves Framework. • Use the AI wearable by Omi (omi.me) to transcribe your live conversations and use agents to take real-time actions based on keywords like vibing code without even touching the keyboard (actionitem.app). • Use one of the Polygon SDKs: Polygon.js, Web3.js, Ethers.js • Use one of these Infra tools: Alchemy, The Graph, Chainlink, IPFS • Use any of these Libraries: Hardhat, Foundry, OpenZeppelin, Thirdweb, Scaffold-ETH

Build a seamless web3 payment experience that feels as smooth and familiar as using a Web2 app like Venmo or Cash App. Your mission is to remove the typical friction points in crypto payments—wallet setup, gas fees, complex UX—and design something your non-crypto friends would actually use.

Bring real-world value on-chain using Polygon’s fast, low-cost infrastructure. Whether it’s Pokémon-style digital collectibles, tokenized real estate, yield-bearing stablecoins, or DeFi products backed by real-world assets—your goal is to make RWA accessible, liquid, and programmable for anyone, anywhere. 🛠️ What You Can Build Some ideas to inspire you: • Collectibles: Tokenized physical or IP-based items (Pokémon-style NFTs, luxury goods, etc.) • Real Estate: On-chain marketplaces for fractional property ownership or real estate-backed tokens • Stablecoins: Region-specific or asset-backed coins, especially those with innovative yield or governance mechanics • Perpetuals & Synthetic Assets: Tradeable instruments backed by RWAs, like stocks, bonds, or commodities • Bonus points for: Chainlink data feeds, zk-proof attestation layers, or compliance tooling

Build an application that enables multichain USDC payments and payouts using Fast Transfers from CCTP V2. *Please note that CCTP V2 currently supports Ethereum, Avalanche and Base. 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 and Base 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.

Integrate modular wallets using Circle plugins and the Compliance Engine to implement dynamic security controls for USDC transactions. *Please note that Passkey is currently the only feature enabled by Modular Wallet. Example Use Case Risk-Based Authentication - Implement dynamic authentication where transactions require passkey authentication and implemented risk policies.

Develop an application that automates follow-on actions after a cross-chain USDC transfer by leveraging CCTP Hooks, enabling seamles, programmable workflows.

ENS is simple on the surface, but there are a number of backend infrastructure pieces that could make ENS even easier to use for developers! We'd love to see you get creative, but will get you started with two ideas: • A backend service that indexes ENS resolver smart contracts for events where people attach an IPFS hash to their name, and automatically pins those files. Build this as an easy-to-self-host Docker container so anybody can run their own instance! • An API that relays signatures to multiple L2 chains for setting reverse records. This feature is only on testnet right now, but building the API now could lead to it being a core piece of ENS infrastructure when it's launched on mainnet in the coming weeks!

Every app needs identity, and Durin makes it easy to build that with ENS on L2s. We want to see the smoothest experience you can come up with for creating subnames in your app. Think about a smart account that creates an ENS subnames (like basenames) at the time of deployment, or AI agents that each have a rich profile powered by ENS text records.

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!

Your goal is to create applications that showcase compliance innovation, helping to seamlessly integrate blockchain technology with traditional finance and regulatory requirements. We're looking for projects that leverage blockchain advantages while strictly adhering to regulatory frameworks, demonstrating HashKey Chain's compliance DNA and technical capabilities. Some creative directions: - Compliant digital asset custody solutions with integrated KYC/AML processes - Regulatory-friendly DeFi products with built-in compliance reporting - Cross-border trade finance platforms with auditable money flows and smart contracts - Digital identity verification and privacy protection systems that meet regulatory requirements - Compliant tokenized securities trading platforms supporting dividend distribution and voting rights

Your goal is to create innovative applications that bring real-world assets (RWA) to blockchain in a secure and compliant manner, showcasing HashKey Chain's technical advantages and regulatory strength in connecting on-chain and off-chain assets. We're looking for projects that address core challenges such as asset verification, compliance auditing, and liquidity enhancement. Some creative directions: - Compliant real estate tokenization platforms supporting fractional ownership and yield distribution - Supply chain finance and trade asset securitization solutions with regulatory audit trails - Art and collectibles compliant digitization and authentication systems - On-chain representation and trading mechanisms for traditional financial assets (bonds, stocks, etc.) - RWA-based decentralized lending platforms with compliant risk control and credit assessment

Your goal is to build innovative infrastructure projects that enhance blockchain's underlying architecture while ensuring regulatory compliance, showcasing HashKey Chain's technical advantages in compliant infrastructure. We're looking for projects that improve blockchain performance, security, interoperability, and compliance. Some creative directions: - Compliance-oriented cross-chain communication protocols supporting auditable cross-chain asset transfers Layer 2 scaling solutions with built-in privacy protection and compliance auditing - Regulation-friendly decentralized identity infrastructure (DID) supporting verifiable credentials and tiered permissions - Compliance-oriented modular smart contract architecture with built-in regulatory parameters and upgradeability - High-performance consensus mechanisms for institutional-scale adoption with transaction traceability and compliance tracking - Regulatory-compliant data storage and data privacy protection networks - Oracle solutions for financial institutions providing verifiable and compliant data sources

The grand prize will be given to the most compelling submissions made during the hackathon. It can qualify under any of the categories below, so be sure to read them to get some ideas! Think of the grand prize as an extension of the category prizes.

The Open Intents Framework (OIF) is designed to make cross-chain execution seamless by enabling intent-based transactions. Instead of users having to manually bridge assets or approve multiple transactions, OIF lets them express what they want, and solvers handle execution behind the scenes. For this category, we're looking for the best integration of OIF using Hyperlane.

This category is for building infrastructure that either enhances Hyperlane or makes use of Hyperlane's capabilities. Maybe you’ll build a customized Deploy tool to bundle Hyperlane with any OP Chain deployment? Or perhaps you’d build a way to more easily connect chains with Hyperlane? Maybe you’ll build a tool to allow any chain to get access to oracle feeds from any chain? You decide!

Celo just launched as an L2 and this needs to be celebrated. Everyone who deploys on Celo Mainnet and can showcase that their contract is working will be eligible for the prize pool!

Build any AI agent on Celo focused on real world use cases. Examples: - Microloans - ReFi - DeFi - User Experience

CxAI just launched on Celo and we are looking for AI Infra or Tooling on Celo. Be creative. Think outside of the box. Be the next big infra project on Celo.

Building for a Bitcoin-backed economy requires Bitcoin-first financial applications - ₿apps as we call it. In this track, we will be rewarding unique ideas & experimentations that shapes around Bitcoin and Citrea. Some ideas are: - Yield-bearing Bitcoin Stablecoins - Lending/Borrowing Protocols - Markets - DEXes

You have some other ideas that fits to the spirit of Bitcoin? Private unstoppable money? Bitcoin x AI x Citrea? RWAs using Bitcoin? Or do you believe your unique DeFi idea is way too good? This track is for you then!

Integrate Self onchain SDK into your application so users can prove their identity! Check the docs linked below to understand how to integrate the Self SDK into your Smart Contract.

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 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.

This bounty is all about using AI on-chain to solve a problem. This bounty is to leverage Zircuit’s AI potential to build a DeFAI project, deploy unique agents, build interesting integrations, and more. The AI can reside off-chain, but some part of the app should be on-chain. 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. 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.

Build faster. Scale smarter. Win bigger. MultiBaas simplifies Web3 development by handling smart contract interactions, transaction management, cloud wallets, and more—so you can focus on building. With support for networks like Celo, Polygon, and Zircuit, MultiBaas not only accelerates your project, but might also help you win other prizes! 🤫 💡Some Ideas to Explore💡      🎮 NFT Character Games – Create unique, on-chain characters with evolving traits      📊 DeFi Dashboards – Build real-time analytics tools with live blockchain data      🌐 SocialFi Platforms – Design a DeSoc network with tokenized engagement      🏛 On-Chain Governance – Enable decentralized decision-making through DAOs Of course, these are just suggestions — we can’t wait to see your creativity in action!

AI is changing the way we interact with Web3. With MultiBaas’ REST API, integrating blockchain functionality into AI-powered applications is easier than ever—no need to wrestle with complex Web3 libraries. Whether you're building an AI agent, an AI-enhanced dApp, or a Web3 automation tool, MultiBaas helps you bridge the gap between AI and blockchain seamlessly. 💡 Some Ideas to Explore 💡 🤖 AI-powered transactions – "Transfer 10 ETH to Bob" using an AI-driven voice or chat interface 🤖 On-chain AI analytics – AI models analyzing real-time blockchain data via MultiBaas APIs 🤖 AI-enhanced NFT platforms – AI-generated artwork, on-chain AI curation, or predictive pricing models 🤖 Automated DeFi strategies – AI-driven trade execution or risk assessment 🤖 AI-enabled DAOs – Smart governance decisions based on AI insights We’re excited to see how you push the boundaries of AI and Web3!

MultiBaas Spreadsheet is a no-code solution, an add-on for Google Sheets that provides custom spreadsheet functions and real time read/write access to the blockchain via MultiBaas. Anything you can normally do in a spreadsheet can be used with MultiBaas Spreadsheet: creating charts, comparing one smart contract's data to another, and signing transactions using the Cloud Wallet functionality integrated into MultiBaas. 💡 Some Ideas to Explore 💡 🈸 Create DeFi or blockchain apps – get real-time blockchain data and sign transactions right from the spreadsheet. MultiBaas Spreadsheet supports advanced transaction composition, plus optional on-chain multisig wallet and off-chain enterprise wallet support. 🧮 Build complex financial models – backtest crypto trading strategies with MultiBaas Spreadsheet’s unlimited historical blockchain data. The state cache enables complex aggregations and data analysis by providing quick access to historical smart contract data on any supported blockchain. It also manages chain re-orgs and node issues. We’re excited to see how you utilize MultiBaas Spreadsheet in your project!

Build faster. Deploy smarter. Win more. MultiBaas makes it easy to develop on Arbitrum, Celo, Polygon, and Zircuit, so you can focus on innovation rather than blockchain complexities. Whether you're creating DeFi protocols, NFT apps, SocialFi platforms, or on-chain governance tools, MultiBaas helps you get there faster—and might even give you an edge in other hackathon prizes! 💡 Some Ideas to Explore 💡      🚀 DeFi dashboards – Real-time on-chain analytics & portfolio tracking      🎮 NFT character games – Cross-chain assets & dynamic in-game interactions      📢 SocialFi platforms – Tokenized communities & reputation-based rewards      🏛 On-chain governance – DAOs, quadratic voting, or AI-assisted proposals Bring your best idea—we’re excited to see what you build!

Projects in this category must implement meaningful integrations using Uniswap v4 Hooks. Whether optimizing LP profitability or introducing new financial mechanisms, the goal is to demonstrate the power of Hooks in DeFi.

Leverage SuperchainERC20 to build seamless cross-chain DeFi interactions on Unichain. Focus on seamless user flows, real utility, and impactful technical implementation.

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.

Create a tokenized app using metal. Metal lets you create tokens, spin up user wallets and manage transactions seamlessly from our simple apis. --- Available APIs include: - Create Token - Get Or Create Holder - Distribute Token - Get Token Holders --- Refer to the docs for more in depth info.