Unite Cosmos

Problem Statement

Cross-Chain Atomic Swap Escrow System ��Project OverviewThis is a cross-chain atomic swap escrow system that enables secure, trustless token exchanges between Ethereum and Cosmos blockchains. The system implements a sophisticated escrow mechanism that allows users to swap tokens across different blockchain ecosystems without requiring a trusted third party.�What It DoesCore Functionality The system enables users to:Deposit tokens on one blockchain (e.g., 0.1 ETH on Ethereum)Receive tokens on another blockchain (e.g., 100 OSMO on Osmosis/Cosmos)Complete the swap atomically using cryptographic secretsCancel and recover funds if the swap doesn't complete within a timelockTrustless OperationNo trusted third parties requiredCryptographic guarantees ensure atomic executionUsers maintain full control of their fundsCross-Chain CompatibilitySupports different blockchain architecturesHandles different address formats and token standardsExtensible to additional chains🔮 Future Enhancements Planned FeaturesMulti-Token Support: Support for more token standardsUI/UX: Web interface for non-technical usersAnalytics: Cross-chain transaction monitoring

Solution

How This Cross-Chain Escrow System Was Built🛠️ Development Process & Technical Implementation Phase 1: Foundation & Architecture Design Technology Selection: Rust/CosmWasm for Cosmos: CosmWasm ecosystem compatibility Solidity for Ethereum: Industry standard with extensive tooling and community support TypeScript/Node.js for orchestration: Type safety, async/await support, and rich ecosystemKey Design Decisions: Cosmos: contract for simplicity and state management but address of each contract has different address Cross-Chain: Hashlock-based linking mechanism🔐 Phase 2: Escrow Points Ethereum Escrow: Same as 1inch Cosmos Escrow CosmWasm contract handles both source and destination escrowscreate_src_escrow() and create_dst_escrow() messageswithdraw_src() and withdraw_dst() for secret-based withdrawalscancel_src() and cancel_dst() for maker cancellationspublic_withdraw_src() and public_withdraw_dst() for post-timelock operationsrescue() function for emergency fund recoveryState management through immutable parametersNative token and CW-20 token support🔧Phase: 3: Resolver Points CrossChainResolver ClassOrchestrates operations across Ethereum and Cosmos chainsManages in-memory escrow state trackingHandles cross-chain escrow creation and linkingProvides unified interface for withdrawals and cancellationsImplements retry logic for failed operationsValidates escrow configurations before executionManages cryptographic secret generation and hashlock creationHandles error recovery and state synchronization