I built a Bitcoin signing device where the private key is physical

Show HN: I built a Bitcoin signing device where the private key is physical

I built a Bitcoin signing device where the private key is physical is a company in show hn launch.

Profile

The core problem I kept running into with hardware wallets: the private key exists as a persistent digital object inside a chip. It’s protected — but it exists. That’s the vulnerability. Protection fails; existence is structural. I built a different model. The private key is encoded as a geometric hole pattern in a titanium plate. A signing terminal reads the plate optically, derives the key transiently in volatile memory, signs the transaction, and discards everything. The plate doesn’t change. Nothing is stored. A few implementation details that might interest people here: The signing terminal uses two physically isolated MCUs — one handles communications, one handles signing. They are not

Within the show hn launch space, the company focuses on its core offering rather than a broad product line.

Directory data places it at the Show HN launch stage.

Website: frozensecurity.com