XRoute
Intergation of Etherlink and Tezos with 1inch Fusion+ protocol, enabling token swaps via routing
Demo
About
1) Tezos: We created a cross-chain bridge implementation, which provides a solution for executing 1inch Fusion+ cross-chain orders between Tezos and Ethereum networks. Features: - Hashlock and timelock functionality - preserved on the Tezos side to ensure secure cross-chain transactions - Signature verification - implemented on the Tezos side for validating swap requests - Bidirectional swaps - token swaps are supported in both directions (Tezos ↔ Ethereum) - On-chain execution - deployed and tested on Tezos Ghostnet and Local EVM Node - Resolver server - a lightweight resolver implemented to launch cross-chain order execution - User interface - console application for easy interaction Components:: - Smart contracts deployed on both EVM-compatible chains and Tezos - A resolver service that receives cross-chain orders from clients and executes them on Tezos and Ethereum - A command-line interface application that allows users to swap tokens between Tezos and Ethereum networks 2) Etherlink: The project integrates Etherlink with 1inch Fusion+ protocol by implementing a custom resolver that enables cross-chain token swaps with automatic routing through Etherlink's DEX aggregator. Features: The resolver automatically detects when tokens differ between source and destination chains, calls the Etherlink aggregator API to get optimal swap routes, prepares approve + swap calldata, and executes everything atomically in a single transaction. This enables seamless cross-chain swaps like ETH USDC → Etherlink WBTC with the best available rates. Components: - Resolver implementation and testing framework - Solidity smart contracts extending 1inch's base resolver with arbitraryCalls functionality - 1inch Cross-Chain SDK for order creation and escrow management - Custom API integration for swap route optimization on Etherlink
How it's made
1) Tezos Key technologies: - Node.js + TypeScript - for type safety and easier debugging across all packages - CameLIGO - for writing smart contracts on Tezos with strong typing - prool - for testing EVM contracts locally - Taquito - for interacting with Tezos blockchain from Node.js - ethers.js - for handling Ethereum transactions and smart contract calls - Express - for building a simple API for the resolver service - @1inch/cross-chain-sdk - for creating and validating cross-chain orders the 1inch way 2) Etherlink Key technologies: - TypeScript/Node.js for the resolver implementation and testing framework - Solidity: Enhanced resolver contract with deployDst(targets[], callsData[]) for complex operations - 1inch Cross-Chain SDK for order creation and escrow management - Custom API integration for swap route optimization on Etherlink - Ethers.js for blockchain interactions and transaction handling Built with comprehensive test coverage using Jest and Prool for local blockchain forking, ensuring reliability for mainnet deployment.