What began as an effort to build better infrastructure for online surveys and data collection has grown into something larger. Today, we're officially launching Proof of Human on @ycombinator. Our new name reflects our mission: to preserve human trust on the internet in the age of AI. As AI becomes increasingly capable, knowing whether there's a real human on the other side is becoming fundamental infrastructure. If you're working on a difficult human verification problem, we'd love to hear from you. Welcome to the Proof of Human era.

#CyberBARB 🎀🩷

Today, we’re introducing Nefesh by @electrokare - a foundation model for human physiology. The human body produces an extraordinary amount of information. Our ability to understand it, and use it to help, has barely caught up. We started Electrokare to change that. Our first window into the body is the ECG. A few seconds of electrical activity, collected every day in clinics, hospitals, and wearables around the world. We believe it can tell physicians far more about a patient than it does today. Nefesh is our foundation for that work: learning from the underlying signal to answer a growing range of questions about cardiac function, structure, and the physiology beyond them. For a physician, the promise is concrete. Recognizing disease earlier. Knowing which patient needs a closer look. Getting more information from a test already in your hands. For us, this is the beginning of a much larger undertaking. We want to bring multiple signals and modalities together into a model of how the human body works, one that can help medicine move from treating disease after it declares itself to understanding what is changing, and acting earlier. Today, we’re sharing the first chapter. Introducing Nefesh, by Electrokare. Live across multiple clinical sites, and tens of thousands of patients. Making physiology computable. If you’re a physician or healthcare leader who wants to help build this future, I’d love to hear from you.