Silence Labs Silent Open Banking is a cryptographic security solution developed by Silence Laboratories, designed to secure authentication and transaction signing workflows in open banking environments. The product leverages Multi-Party Computation (MPC) technology to distribute private key operations across multiple parties, ensuring that no single entity holds a complete private key at any point. This approach aims to eliminate single points of compromise in sensitive financial authentication flows. Core to the solution is the use of threshold signature schemes, which allow transaction signing to occur collaboratively between parties without exposing underlying key material. This is particularly suited for open banking contexts where APIs are used to facilitate third-party access to financial data and payment initiation. The solution targets financial institutions and fintech companies seeking to harden their authentication and authorization mechanisms for open banking APIs. It addresses risks associated with credential theft, key compromise, and unauthorized transaction signing. By distributing cryptographic operations, the product reduces reliance on traditional single-key architectures and hardware security modules (HSMs), offering a software-based alternative for securing sensitive operations in banking workflows. The product is positioned for integration into existing open banking infrastructure, supporting compliance with open banking standards and frameworks that require strong authentication and secure transaction authorization.