algobridge
Gasless ETH↔ALGO swaps via intent-based cross-chain bridge using 1inch Fusion+ architecture
Demo
About
- Multi-Resolver Competition: 4 different resolver strategies (High-frequency, Arbitrage, MEV, Conservative) compete for orders with staggered bidding and risk-based allocation - 1inch Escrow Factory Integration: Deterministic escrow creation using official 1inch factory contracts for unified orderHash coordination - Atomic Security: Hash Time Lock Contracts (HTLCs) ensure atomic swaps with secret-based resolution and automatic timelock refunds - Gasless Experience: Users sign EIP-712 intents off-chain; resolvers pay all gas fees and earn profit from spreads - Production Architecture: Proper environment separation (.env.relayer, .env.resolvers), comprehensive error handling, and real-time monitoring The bridge supports partial fills, Dutch auction pricing mechanisms, and provides complete cross-chain liquidity with automatic failsafe mechanisms
How it's made
Core Technologies: - Ethereum: Solidity smart contracts on Sepolia testnet with EIP-712 signature verification - Algorand: PyTeal smart contracts for HTLC implementation on Algorand testnet - Node.js: Multi-resolver relayer system with competitive bidding logic - ethers.js: Ethereum blockchain interaction and transaction management - algosdk: Algorand blockchain integration and account management Architecture Highlights: Smart Contracts: - LimitOrderBridge: EIP-712 based intent system for gasless order submission - 1inch Escrow Factory: Official 1inch factory for deterministic escrow creation (0x0d8137727DB1aC0f7B10f7687D734CD027921bf6) - Algorand HTLC: PyTeal contracts for atomic swap resolution on Algorand side Multi-Resolver System: // 4 competitive resolver strategies from .env.resolvers - High-Frequency-Resolver: Fast execution, 1% premium bidding - Arbitrage-Resolver: Profit-focused, 5% discount strategy - MEV-Resolver: Maximum value extraction, 5% premium - Backup-Resolver: Conservative, 10% discount fallback