Cornerstone · the device
Cornerstone’s software already encrypts your data so we can’t read it. The device closes the last gap: a small computer in your house that runs the family’s AI and holds its memory — so the everyday case never leaves the building. The honest version of owning your data.
🔊 Hear this page — in my own voice
The short version, “explain it like I’m 10,” and a personal note — in my own cloned voice.
Client-side encryption fixes storage — we hold only ciphertext. But two things still touch our servers: the AI itself (a kid’s question goes to a cloud model, even if governed) and reachability (phones and laptops aren’t a stable home for the data). The box closes both, because it moves the compute home, not just the storage — and no amount of encryption can do that from the cloud. The box answers what it can locally and escalates only genuinely hard asks, visibly, on a ceiling you set.
The family’s AI answers most questions on the box itself, and only escalates a genuinely hard one to a frontier model — visibly, and only if you allow it. The ordinary case never leaves the building.
Your photos, documents, and the kids’ AI memory live on the box’s own disk. Here the box is the client: the keys are held with your family, on your hardware — not on our server.
Phones and laptops come and go; the box is always there. It’s the durable member of your device mesh, so your data always has a live home — and off-site backup runs from here.
Local speech-to-text and text-to-speech, so a spoken question and its spoken answer never round-trip to the cloud. Round-tripping the audio would defeat the whole point.
It originates the encrypted off-site backup — ciphertext to cold storage — so even fire or theft can’t erase the family’s memory. We hold nothing but sealed bytes.
HiveJournal itself, packaged and running on the box, degrading gracefully when the internet is down. The whole thing runs on your box, not our cloud — you can even pull the cable and watch it keep working.
A panel shows every port the box has open and every connection it makes — each labeled in plain language, with history. See for yourself that when you asked nothing hard, nothing left. Verification you can watch, not a promise you have to trust.
The local AI is deliberately light (a small on-device model + a fast deterministic language engine; the heavy work escalates to the cloud), so the first Cornerstone device is commodity hardware — no manufacturing, no waiting. Here’s the shape of it.
We’re building it for our own family first. The waitlist tells us whether families want the box badly enough to build the productized version — before a dollar of hardware spend.
You don’t have to wait for it — the software tiers work today. But if a small computer that keeps your family’s AI and memory physically in your home is the version you want, say so, and we’ll build it toward you.