AceSuperSwap

Problem Statement

Acesuperswap might be the first working atomic swaps between the Ethereum and Stellar networks, solving the problem of trustless cross-chain asset transfers.The Problem: Current cross-chain bridges are centralized honeypots - over $2 billion stolen in 2022 alone. Users must trust bridge operators with their funds, creating risk.Our Solution: Pure cryptographic atomic swaps using Hash Time-Locked Contracts (HTLCs) with ZERO trusted intermediaries. Either both swaps complete successfully, or both fail - no partial states, no stuck funds, no trust required.Key Innovation: We bridge fundamentally different blockchain architectures:EVM chains use individual escrow contracts per swapStellar uses a singleton factory managing multiple escrows via storage keysOur Bridge links these using universal order_hash identifiers with cryptographic atomicityWhat Makes This Special:Working Implementation of EVM ↔️ Stellar atomic swapsTrue Atomicity: Cryptographic guarantees, not trust-based promisesProduction Ready: Live testnet deployment with comprehensive testingBidirectional: Supports both EVM→Stellar AND Stellar→EVM swaps1inch Integration: Built on proven Fusion+ infrastructure for immediate adoption

Solution

Core Architecture: We built a dual-chain atomic swap system that bridges EVM and Stellar's fundamentally different smart contract models using cryptographic Hash Time-Locked Contracts.Technologies Used:Stellar: Soroban smart contracts in Rust with a factory singleton patternEVM: Solidity escrow contracts integrated with 1inch Limit Order ProtocolTypeScript: Contract bindings and cross-chain orchestration1inch Fusion+ SDK: Production-grade order management and matchingKey Technical Innovations:SAC Admin Architecture Breakthrough The biggest challenge: Soroban contracts can't hold classic Stellar assets due to trustline requirements. We solved this by making our factory contract the SAC (Stellar Asset Contract admin:Cross-Chain State Synchronization Different architectures required innovative linking:EVM: Individual contract per swap with deterministic addressesStellar: Factory storage using order_hash as universal keyBridge: Same order_hash creates a logical link between different storage modelsCryptographic Hash Consistency Ensuring identical hash computation across Rust and Solidity required a bit-level format consistency:Dual Address Mapping Bridging 20-byte EVM addresses with 32-byte Stellar addresses using structured mappingPartner Technology Benefits:1inch Fusion+: Provided battle-tested order management, gas optimization, and MEV protectionStellar Soroban: Enabled efficient factory pattern with persistent storageTypeScript Bindings: Auto-generated from Rust contracts for type-safe interaction, I ran into a lot of xdr and bad union switch errors