Unite Cosmos

Cross-Chain Atomic Swap Escrow System ��Project Overview

This 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 Does

Core 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 secrets
• Cancel and recover funds if the swap doesn't complete within a timelock

1. Trustless Operation

• No trusted third parties required
• Cryptographic guarantees ensure atomic execution
• Users maintain full control of their funds

1. Cross-Chain Compatibility

• Supports different blockchain architectures
• Handles different address formats and token standards
• Extensible to additional chains

🔮 Future Enhancements Planned Features

• Multi-Token Support: Support for more token standards
• UI/UX: Web interface for non-technical users
• Analytics: Cross-chain transaction monitoring

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 ecosystem

Key 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 escrows

• create_src_escrow() and create_dst_escrow() messages
• withdraw_src() and withdraw_dst() for secret-based withdrawals
• cancel_src() and cancel_dst() for maker cancellations
• public_withdraw_src() and public_withdraw_dst() for post-timelock operations
• rescue() function for emergency fund recovery
• State management through immutable parameters
• Native token and CW-20 token support

🔧Phase: 3: Resolver Points CrossChainResolver Class

• Orchestrates operations across Ethereum and Cosmos chains
• Manages in-memory escrow state tracking
• Handles cross-chain escrow creation and linking
• Provides unified interface for withdrawals and cancellations
• Implements retry logic for failed operations
• Validates escrow configurations before execution
• Manages cryptographic secret generation and hashlock creation
• Handles error recovery and state synchronization