Unite Defi

1inch

$500,000

1inch.io
1inch
Open page β†’

About

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 applications with extensive use of 1inch API * Extend our Limit Order protocol with creative trading strategies for users * Expand the reach of 1inch Cross-chain Swap (Fusion+) to one of the following EVM and 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.

Prizes

🍾 Expand Limit Order Protocol ⸺ $65,000
πŸ₯‡
1st place
$10,000 Γ—3
πŸ…
2nd place
$7,000 Γ—3
πŸ…
3rd place
$3,500 Γ—4
1inch Limit Order Protocol is an onchain orderbook that can be extended to do much more. Build advanced strategies and hooks for the 1inch Limit Order Protocol like options, concentrated liquidity, TWAP swaps, etc.

Qualification Requirements

Requirements: - Onchain execution of strategy should be presented during the final demo - Custom Limit Orders should not be posted to official Limit Order API - Consistent commit history should be in the GitHub project. No low or single-commit entries allowed! Stretch goals (not hard requirements): - UI

πŸ“ˆ Build a full Application using 1inch APIs βΈΊ $30,000
πŸ₯‡
1st place
$5,000 Γ—3
πŸ…
2nd place
$3,000 Γ—3
πŸ…
3rd place
$1,500 Γ—4
1inch offers a variety of REST APIs that make building onchain applications simpler. Create a full dApp using as many 1inch APIs as possible. Example integration points: - Add swap functionality with one of our swap protocols (1inch Cross-chain Swap (Fusion+), Intent-based Swap (Fusion), Classic Swap, or Limit Order protocol) - Source onchain data using our data APIs (price feeds API, wallet balances API, token metadata API, and many more) - Post transactions our Web3 API to interact with the blockchain

Qualification Requirements

- Application should use 1inch API as much as possible - Consistent commit history should be in the GitHub project. No low or single-commit entries allowed!

πŸš€ Extend Fusion+ to Aptos βΈΊ $32,000
πŸ₯‡
1st place
$12,000
πŸ₯ˆ
2nd place
$7,500
πŸ₯‰
3rd place
$5,000
πŸ…
4th place
$4,000
πŸ…
5th place
$3,500
Build a novel extension for 1inch Cross-chain Swap (Fusion+) that enables swaps between Ethereum and Aptos.

Qualification Requirements

Requirements: - Preserve hashlock and timelock functionality for the non-EVM implementation - Swap functionality should be bidirectional (swaps should be possible to and from Ethereum) - Onchain (mainnet/L2 or testnet) execution of token transfers should be presented during the final demo (EVM testnets will require the deployment of Limit Order Protocol contracts) Stretch goals (not hard requirements): - UI - Enable partial fills

πŸͺ™ Extend Fusion+ to Bitcoin (Doge/LTC/etc.) βΈΊ $32,000
πŸ₯‡
1st place
$12,000
πŸ₯ˆ
2nd place
$7,500
πŸ₯‰
3rd place
$5,000
πŸ…
4th place
$4,000
πŸ…
5th place
$3,500
Build a novel extension for 1inch Cross-chain Swap (Fusion+) that enables swaps between Ethereum and one of the following chains: - Bitcoin - Dogecoin - Litecoin - Bitcoin Cash

Qualification Requirements

Requirements: - Preserve hashlock and timelock functionality for the non-EVM implementation - Swap functionality should be bidirectional (swaps should be possible to and from Ethereum) - Onchain (mainnet/L2 or testnet) execution of token transfers should be presented during the final demo (EVM testnets will require the deployment of Limit Order Protocol contracts) Stretch goals (not hard requirements): - UI - Enable partial fills

🌌 Extend Fusion+ to Cosmos ⸺ $32,000
πŸ₯‡
1st place
$12,000
πŸ₯ˆ
2nd place
$7,500
πŸ₯‰
3rd place
$5,000
πŸ…
4th place
$4,000
πŸ…
5th place
$3,500
Build a novel extension for 1inch Cross-chain Swap (Fusion+) that enables swaps between Ethereum and Cosmos.

Qualification Requirements

Requirements: - Preserve hashlock and timelock functionality for the non-EVM implementation - Swap functionality should be bidirectional (swaps should be possible to and from Ethereum) - Onchain (mainnet/L2 or testnet) execution of token transfers should be presented during the final demo (EVM testnets will require the deployment of Limit Order Protocol contracts) Stretch goals (not hard requirements): - UI - Enable partial fills

🌐 Extend Fusion+ to Near ⸺ $32,000
πŸ₯‡
1st place
$12,000
πŸ₯ˆ
2nd place
$7,500
πŸ₯‰
3rd place
$5,000
πŸ…
4th place
$4,000
πŸ…
5th place
$3,500
Build a novel extension for 1inch Cross-chain Swap (Fusion+) that enables swaps between Ethereum and Near.

Qualification Requirements

Requirements: - Preserve hashlock and timelock functionality for the non-EVM implementation - Swap functionality should be bidirectional (swaps should be possible to and from Ethereum) - Onchain (mainnet/L2 or testnet) execution of token transfers should be presented during the final demo (EVM testnets will require the deployment of Limit Order Protocol contracts) Stretch goals (not hard requirements): - UI - Enable partial fills

🌊 Extend Fusion+ to Sui ⸺ $32,000
πŸ₯‡
1st place
$12,000
πŸ₯ˆ
2nd place
$7,500
πŸ₯‰
3rd place
$5,000
πŸ…
4th place
$4,000
πŸ…
5th place
$3,500
Build a novel extension for 1inch Cross-chain Swap (Fusion+) that enables swaps between Ethereum and Sui.

Qualification Requirements

Requirements: - Preserve hashlock and timelock functionality for the non-EVM implementation - Swap functionality should be bidirectional (swaps should be possible to and from Ethereum) - Onchain (mainnet/L2 or testnet) execution of token transfers should be presented during the final demo (EVM testnets will require the deployment of Limit Order Protocol contracts) Stretch goals (not hard requirements): - UI - Enable partial fills

⚑ Extend Fusion+ to Tron ⸺ $32,000
πŸ₯‡
1st place
$12,000
πŸ₯ˆ
2nd place
$7,500
πŸ₯‰
3rd place
$5,000
πŸ…
4th place
$4,000
πŸ…
5th place
$3,500
Build a novel extension for 1inch Cross-chain Swap (Fusion+) that enables swaps between Ethereum and Tron.

Qualification Requirements

Requirements: - Preserve hashlock and timelock functionality for the non-EVM implementation - Swap functionality should be bidirectional (swaps should be possible to and from Ethereum) - Onchain (mainnet/L2 or testnet) execution of token transfers should be presented during the final demo (EVM testnets will require the deployment of Limit Order Protocol contracts) Stretch goals (not hard requirements): - UI - Enable partial fills

πŸ’« Extend Fusion+ to Stellar βΈΊ $32,000
πŸ₯‡
1st place
$12,000
πŸ₯ˆ
2nd place
$7,500
πŸ₯‰
3rd place
$5,000
πŸ…
4th place
$4,000
πŸ…
5th place
$3,500
Build a novel extension for 1inch Cross-chain Swap (Fusion+) that enables swaps between Ethereum and Stellar.

Qualification Requirements

Requirements: - Preserve hashlock and timelock functionality for the non-EVM implementation - Swap functionality should be bidirectional (swaps should be possible to and from Ethereum) - Onchain (mainnet/L2 or testnet) execution of token transfers should be presented during the final demo (EVM testnets will require the deployment of Limit Order Protocol contracts) Stretch goals (not hard requirements): - UI - Enable partial fills

πŸ“± Extend Fusion+ to Ton βΈΊ $20,000
πŸ₯‡
1st place
$7,500
πŸ₯ˆ
2nd place
$5,000
πŸ₯‰
3rd place
$3,000
πŸ…
4th place
$2,500
πŸ…
5th place
$2,000
Build a novel extension for 1inch Cross-chain Swap (Fusion+) that enables swaps between Ethereum and Ton.

Qualification Requirements

Requirements: - Preserve hashlock and timelock functionality for the non-EVM implementation - Swap functionality should be bidirectional (swaps should be possible to and from Ethereum) - Onchain (mainnet/L2 or testnet) execution of token transfers should be presented during the final demo (EVM testnets will require the deployment of Limit Order Protocol contracts) Stretch goals (not hard requirements): - UI - Enable partial fills

🏎️ Extend Fusion+ to Monad ⸺ $20,000
πŸ₯‡
1st place
$7,500
πŸ₯ˆ
2nd place
$5,000
πŸ₯‰
3rd place
$3,000
πŸ…
4th place
$2,500
πŸ…
5th place
$2,000
Build a novel extension for 1inch Cross-chain Swap (Fusion+) that enables swaps between Ethereum and Monad.

Qualification Requirements

Requirements: - Preserve hashlock and timelock functionality for the implementation - Swap functionality should be bidirectional (swaps should be possible to and from Ethereum) - Onchain (mainnet/L2 or testnet) execution of token transfers should be presented during the final demo (EVM testnets will require the deployment of Limit Order Protocol contracts) Stretch goals (not hard requirements): - UI - Enable partial fills

πŸ›‘οΈ Extend Fusion+ to Starknet βΈΊ $20,000
πŸ₯‡
1st place
$7,500
πŸ₯ˆ
2nd place
$5,000
πŸ₯‰
3rd place
$3,000
πŸ…
4th place
$2,500
πŸ…
5th place
$2,000
Build a novel extension for 1inch Cross-chain Swap (Fusion+) that enables swaps between Ethereum and Starknet.

Qualification Requirements

Requirements: - Preserve hashlock and timelock functionality for the non-EVM implementation - Swap functionality should be bidirectional (swaps should be possible to and from Ethereum) - Onchain (mainnet/L2 or testnet) execution of token transfers should be presented during the final demo (EVM testnets will require the deployment of Limit Order Protocol contracts) Stretch goals (not hard requirements): - UI - Enable partial fills

πŸ”· Extend Fusion+ to Cardano βΈΊ $20,000
πŸ₯‡
1st place
$7,500
πŸ₯ˆ
2nd place
$5,000
πŸ₯‰
3rd place
$3,000
πŸ…
4th place
$2,500
πŸ…
5th place
$2,000
Build a novel extension for 1inch Cross-chain Swap (Fusion+) that enables swaps between Ethereum and Cardano.

Qualification Requirements

Requirements: - Preserve hashlock and timelock functionality for the non-EVM implementation - Swap functionality should be bidirectional (swaps should be possible to and from Ethereum) - Onchain (mainnet/L2 or testnet) execution of token transfers should be presented during the final demo (EVM testnets will require the deployment of Limit Order Protocol contracts) Stretch goals (not hard requirements): - UI - Enable partial fills

πŸ›οΈ Extend Fusion+ to XRP Ledger βΈΊ $20,000
πŸ₯‡
1st place
$7,500
πŸ₯ˆ
2nd place
$5,000
πŸ₯‰
3rd place
$3,000
πŸ…
4th place
$2,500
πŸ…
5th place
$2,000
Build a novel extension for 1inch Cross-chain Swap (Fusion+) that enables swaps between Ethereum and XRP Ledger.

Qualification Requirements

Requirements: - Preserve hashlock and timelock functionality for the non-EVM implementation - Swap functionality should be bidirectional (swaps should be possible to and from Ethereum) - Onchain (mainnet/L2 or testnet) execution of token transfers should be presented during the final demo (EVM testnets will require the deployment of Limit Order Protocol contracts) Stretch goals (not hard requirements): - UI - Enable partial fills

πŸ–₯️ Extend Fusion+ to ICP βΈΊ $20,000
πŸ₯‡
1st place
$7,500
πŸ₯ˆ
2nd place
$5,000
πŸ₯‰
3rd place
$3,000
πŸ…
4th place
$2,500
πŸ…
5th place
$2,000
Build a novel extension for 1inch Cross-chain Swap (Fusion+) that enables swaps between Ethereum and ICP

Qualification Requirements

Requirements: - Preserve hashlock and timelock functionality for the non-EVM implementation - Swap functionality should be bidirectional (swaps should be possible to and from Ethereum) - Onchain (mainnet/L2 or testnet) execution of token transfers should be presented during the final demo (EVM testnets will require the deployment of Limit Order Protocol contracts) Stretch goals (not hard requirements): - UI - Enable partial fills

πŸ—³οΈ Extend Fusion+ to Tezos βΈΊ $20,000
πŸ₯‡
1st place
$7,500
πŸ₯ˆ
2nd place
$5,000
πŸ₯‰
3rd place
$3,000
πŸ…
4th place
$2,500
πŸ…
5th place
$2,000
Build a novel extension for 1inch Cross-chain Swap (Fusion+) that enables swaps between Ethereum and Tezos.

Qualification Requirements

Requirements: - Preserve hashlock and timelock functionality for the non-EVM implementation - Swap functionality should be bidirectional (swaps should be possible to and from Ethereum) - Onchain (mainnet/L2 or testnet) execution of token transfers should be presented during the final demo (EVM testnets will require the deployment of Limit Order Protocol contracts) Stretch goals (not hard requirements): - UI - Enable partial fills

πŸ”΄ Extend Fusion+ to Polkadot βΈΊ $20,000
πŸ₯‡
1st place
$7,500
πŸ₯ˆ
2nd place
$5,000
πŸ₯‰
3rd place
$3,000
πŸ…
4th place
$2,500
πŸ…
5th place.
$2,000
Build a novel extension for 1inch Cross-chain Swap (Fusion+) that enables swaps between Ethereum and Polkadot.

Qualification Requirements

Requirements: - Preserve hashlock and timelock functionality for the non-EVM implementation - Swap functionality should be bidirectional (swaps should be possible to and from Ethereum) - Onchain (mainnet/L2 or testnet) execution of token transfers should be presented during the final demo (EVM testnets will require the deployment of Limit Order Protocol contracts) Stretch goals (not hard requirements): - UI - Enable partial fills

🌍 Extend Fusion+ to Any Other Chain ⸺ $20,000
πŸ₯‡
1st place
$7,500
πŸ₯ˆ
2nd place
$5,000
πŸ₯‰
3rd place
$3,000
πŸ…
4th place
$2,500
πŸ…
5th place
$2,000
Build a novel extension for 1inch Cross-chain Swap (Fusion+) that enables swaps between Ethereum and any other chain not listed above.

Qualification Requirements

Requirements: - Preserve hashlock and timelock functionality for the non-EVM implementation - Swap functionality should be bidirectional (swaps should be possible to and from Ethereum) - Onchain (mainnet/L2 or testnet) execution of token transfers should be presented during the final demo (EVM testnets will require the deployment of Limit Order Protocol contracts) Stretch goals (not hard requirements): - UI - Enable partial fills

πŸ’° Judges Pick βΈΊ $1,000
This is an non-guaranteed $1000 bonus track that may be optionally rewarded by the judges at the end of the hackathon. Do not submit anything to this category. We will handle the rest if one is chosen!

Qualification Requirements

- Get picked for the bonus by the judges. - Nothing specific is required in the entry to be eligible for this prize.

Resources

1inch Hackathon Guide
https://hackathon.1inch.community
β†—
Fusion+ Whitepaper
https://1inch.io/assets/1inch-fusion-plus.pdf
β†—

Jobs

Etherlink

$10,000

etherlink.com
etherlink
Open page β†’

About

Etherlink is a high-performance, EVM-compatible Layer 2 built on the Tezos blockchain. Designed with developers in mind, Etherlink combines low fees, fast finality, and institutional-grade security β€” making it ideal for DeFi applications and real-world use cases. Built using Tezos Smart Rollups and powered by a decentralized Data Availability Layer (DAL), Etherlink provides a scalable and efficient environment for deploying Solidity-based smart contracts using familiar tools like Hardhat, Foundry, and MetaMask. Key features include: β€’ EVM compatibility: Deploy and interact with smart contracts using standard Ethereum tooling. β€’ High throughput, low latency: Optimized for fast transaction finality. β€’ Affordable gas fees: Build and scale without high operational costs. β€’ Decentralized and upgradeable: Built on Tezos, one of the most battle-tested blockchains in production. βΈ» Why Build on Etherlink? β€’ Performance: DeFi apps run smoothly with near-instant execution and high transaction capacity. β€’ Trustworthy foundation: Etherlink inherits the governance and decentralization guarantees of Tezos. β€’ Easy onboarding: Use existing Ethereum codebases, infrastructure, and developer tools. β€’ Supportive ecosystem: Receive direct support from the Etherlink team during the hackathon and beyond. Whether you’re porting an existing DApp or launching something entirely new, Etherlink gives you a solid, future-proof base to build on.

Prizes

🟒 Hack the Stack: Bring Fusion+ to Etherlink ⸺ $10,000
πŸ₯‡
1st place
$5,000
πŸ₯ˆ
2nd place
$3,000
πŸ₯‰
3rd place
$2,000
Build a prototype that integrates Etherlink with the 1inch Fusion+ protocol, enabling token swaps via 1inch routed through Etherlink’s Layer 2 network. This can include routing logic, custom smart contracts, bridges, or price oracle adaptations needed to make Fusion+ compatible with Etherlink. You can also explore adjacent tools or infrastructure that help facilitate cross-chain routing, asset bridging, or composability between Etherlink and Ethereum.

Qualification Requirements

To qualify for a prize, submissions must: 1. Deploy on Etherlink using Solidity (EVM-compatible) smart contracts. 2. Demonstrate how your project integrates or extends 1inch Fusion+ on Etherlink. 3. Include a clear README with instructions on: β€’ How to run or test the code β€’ What components were built or modified β€’ Which 1inch protocol features were used or extended 4. Be submitted before the ETHGlobal Unite deadline and presented during judging. 5. Be original work created during the hackathon. Bonus points for: β€’ Technical depth and practical utility β€’ Working UI or CLI to demonstrate integration β€’ Clear potential for future development or 1inch partnership

Stellar

$10,000

stellar.org
stellarorg
Open page β†’

About

Stellar is an open-source blockchain network designed for fast, low-cost cross-border payments and asset tokenization. Built with a unique consensus algorithm called the Stellar Consensus Protocol (SCP), it can process thousands of transactions per second with settlement times of 3-5 seconds and fees typically under a penny. The network natively supports multi-currency transactions and atomic swaps, making it particularly well-suited for financial applications, remittances, and creating programmable digital representations of real-world assets.

Prizes

✨ Best use of Stellar x 1inch ⸺ $10,000
πŸ₯‡
1st place
$5,000
πŸ₯ˆ
2nd place
$3,000
πŸ₯‰
3rd place
$2,000
Build an application that combines Stellar's fast, low-cost transactions with 1inch's DEX aggregation technology. Create innovative solutions for cross-chain trading, optimized swaps, or DeFi primitives that meaningfully integrate both platforms to deliver superior user experiences or unlock new financial use cases.

Qualification Requirements

Must integrate both Stellar blockchain and 1inch API/protocols in a meaningful way. Project should demonstrate functional use of each platform's core capabilities.

Resources

Stellar Developer Docs
https://developers.stellar.org/
β†—
Getting Started
https://developers.stellar.org/docs/build/smart-contracts/getting-started
β†—

NEAR

$6,000

near.org
nearprotocol
Open page β†’

About

NEAR Protocol is a scalable blockchain platform that enables seamless cross-chain development through Chain Abstraction. The Shade Agent Framework allows developers to build secure decentralized agents in Trusted Execution Environments, while Chain Signatures enable multi-chain interactions and NEAR Intents simplify user experiences across different blockchain networks.

Prizes

πŸ”— Best 1inch Fusion+ Solver Built with NEAR's Shade Agent Framework βΈΊ $2,000
Build a decentralized solver that integrates with 1inch Fusion+ for cross-chain swaps using NEAR's Shade Agent Framework and Trusted Execution Environment. --- There is an existing decentralized NEAR Intents solver here: Solver manager and deployer https://github.com/Near-One/tee-solver/ Solver https://github.com/think-in-universe/near-intents-tee-amm-solver/tree/feat/tee-solver --- It listens for intents, generates quotes, and submits them for execution on NEAR Intents. Your task is to build a similar system that works with 1inch Fusion+ and its meta-order format. Make sure the solver is created using NEAR’s Shade Agent Framework and is deployed in a Trusted Execution Environment. --- The Shade Agent Framework allows you to build decentralized solvers, enabling users to delegate and provide liquidity to solvers without requiring trust that the solver will behave correctly or having to set up their own solver.

Qualification Requirements

Your solver must listen for quote requests (mocked or real), produce valid 1inch Fusion meta-orders using NEAR's Chain Signatures, include comprehensive documentation with setup instructions, and demonstrate end-to-end functionality. Bonus points for modular architecture that extends to other protocols.

πŸƒβ€β™‚οΈ Decentralized Solver Runners Up βΈΊ $4,000
Up to 4 teams will receive $1,000
Runners up for the decentralized solver prize Build a decentralized solver that integrates with 1inch Fusion+ for cross-chain swaps using NEAR's Shade Agent Framework and Trusted Execution Environment. --- There is an existing decentralized NEAR Intents solver here: Solver manager and deployer https://github.com/Near-One/tee-solver/ Solver https://github.com/think-in-universe/near-intents-tee-amm-solver/tree/feat/tee-solver --- It listens for intents, generates quotes, and submits them for execution on NEAR Intents. Your task is to build a similar system that works with 1inch Fusion+ and its meta-order format. Make sure the solver is created using NEAR’s Shade Agent Framework and is deployed in a Trusted Execution Environment. --- The Shade Agent Framework allows you to build decentralized solvers, enabling users to delegate and provide liquidity to solvers without requiring trust that the solver will behave correctly or having to set up their own solver.

Qualification Requirements

Your solver must listen for quote requests (mocked or real), produce valid 1inch Fusion meta-orders using NEAR's Chain Signatures, include comprehensive documentation with setup instructions, and demonstrate end-to-end functionality. Bonus points for modular architecture that extends to other protocols.