The problem Heka402 solves

A privacy-preserving, multi-chain payment system built on x402 protocol with zero-knowledge proofs and account abstraction.

Features

• 🔐 Zero-Knowledge Privacy: zk-SNARKs prove payment knowledge without revealing identity
• 🔗 Multi-Chain Support: Deployed on 5 testnets (Sepolia, Optimism Sepolia, Arbitrum Sepolia, Polygon Amoy, Base Sepolia)
• 💼 Account Abstraction: ERC-4337 smart contract wallets for seamless UX
• 🌐 x402 Protocol: HTTP-native payment standard
• 🔄 Split Payments: Distribute payments across multiple EVM chains
• 🛡️ Double Privacy Layer: zk proofs + split payments across chains

Challenges we ran into

Faced encoding issues while compiling Circom circuits. However, building the circom package from source and installing the locally built binary helped to rectify the issues.