The fundraise was led by Fulgur Ventures with participation from Arche Capital, as reported by The Block's James Hunt.
The company said in a statement that its KeyOS developer platform is now available to outside developers, and its Passport Prime security device can be used to set up AI agent approval flows.
"Every era has its key management problem. For Bitcoin it was self-custody. For the agentic era it is who actually authorizes the decisions an AI agent takes on someone's behalf," Foundation co-founder and CEO Zach Herbert said, according to The Block. "That question cannot be answered by the same computer running the agent. It has to be answered on dedicated hardware, with a display you can trust and an operating system you can inspect. Nothing happens without your approval."