Co-founder and CTO of SpaceComputer. A satellite in low Earth orbit is a computer no one can reach to tamper with. SpaceComputer relocates the hardware security root to orbit — where physical inaccessibility becomes the security model.
Filip Rezabek carried one question from Prague to Seoul to a Cisco internship to TU Munich: how do you trust a networked system you cannot physically inspect? Securing cars led to securing blockchains, which led to a strange conclusion. The safest place to run a computer is orbit, where no one can reach the hardware. SpaceComputer's satellites generate their own private keys in space, never on the ground.
Asked about 2040, Rezabek pictures Alice, who never thinks about any of it. The photo she takes carries a hash proving where and when it was real. Her weather report is signed by the satellites that watched the clouds. The checkmarks are simply there, seamless, and she may not even care. And when a service fails, the whole web no longer falls with it, the way everything breaks today when Cloudflare goes down. Authenticity stops being something you verify by hand.
Episode 3 of The Sovereign Stack.