BenFen and TX-SHIELD have introduced a new on-chain stablecoin payment protocol that emphasizes privacy and regulatory compliance. This protocol integrates privacy features at the layer-1 level, ensuring fast, private, and scalable transactions. It leverages Multi-Party Computation (MPC) and the Move programming language to enhance security. The protocol, known as BenPay, supports full privacy for payments, decentralized finance (DeFi), and real-world assets (RWA). It includes features such as selective disclosure, zero-knowledge proofs, batch processing, and zero-Gas fee transactions, aiming to provide a comprehensive solution for secure and efficient financial operations.