zeroRISC provides a commercial cloud security service built on the OpenTitan open-source silicon root of trust (RoT) project. The company was founded in 2023 by original OpenTitan project team members from Google, including founder and CEO Dominic Rizzo. The company's platform combines silicon, software, and services to deliver cloud-based secure device management that operates below the operating system level. The solution is designed to provide transparency and reliability for data centers, operational technology/industrial control systems (OT/ICS), and IoT technologies. The platform enables secure ownership transfer of devices and provides device management capabilities based on hardware-level security. zeroRISC's approach centers on open silicon security, utilizing the OpenTitan silicon root of trust as the foundation for its security architecture. This hardware-based security foundation provides assurances at the silicon level before the operating system loads. The company raised $5 million in seed funding in October 2023, led by Cambridge Angels, with participation from ARM founder Herman Hauser and former ARM president Pete Hutton.