Synappay
SynapPay enables seamless, secure cross-chain swaps between Ethereum and Stellar using 1inch Fusion+
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About
SynapPay is a decentralized cross-chain swapping protocol that enables seamless, secure, and efficient token exchanges between Ethereum and Stellar networks. Built for the 1inch hackathon, our solution leverages 1inch's Fusion+ protocol to provide users with the best possible rates while maintaining the security guarantees of atomic swaps. Key Features: - Bidirectional Cross-Chain Swaps: Swap tokens in both directions (Ethereum ↔ Stellar) with a single transaction - Atomic Swap Security: Implements Hash Time-Locked Contracts (HTLC) on both chains to ensure atomicity - 1inch Fusion+ Integration: Utilizes 1inch's Fusion+ for optimal pricing and deep liquidity on Ethereum - Automated Relayer: Handles cross-chain coordination automatically for a seamless user experience - Partial Fill Support: Enables orders to be filled by multiple counterparties for better liquidity - Real-time Pricing: Integrates with 1inch API and CoinGecko for accurate, up-to-date exchange rates Technical Implementation: - Smart Contracts: Custom HTLC contracts for testnet, with mainnet integration to 1inch's Escrow Factory - Backend: Node.js service managing cross-chain coordination and transaction monitoring - Frontend: Intuitive React interface supporting both Ethereum (MetaMask) and Stellar (Freighter) wallets - Security: Comprehensive audit trail, error handling, and monitoring Use Cases: - Cross-chain DeFi: Access Stellar's low fees while maintaining exposure to Ethereum's DeFi ecosystem - Arbitrage: Capitalize on price differences between chains - Portfolio Diversification: Easily move assets between chains to optimize for fees and speed - Merchant Payments: Accept payments on either chain while settling in your preferred currency The platform is built with a focus on security, user experience, and composability, making it an ideal solution for traders, DeFi users, and anyone looking to move value between Ethereum and Stellar efficiently.
How it's made
- Synappay is a cross-chain bridge extending 1inch Fusion+ to Stellar. - It enables atomic and partial fills for cross-chain swaps. - The system utilizes 1inch under the hood with an HTLC solver on Stellar testnet. - It supports bidirectional swaps between Ethereum and Stellar. - The project includes a web UI with MetaMask and Freighter wallet integrations.