The walleteer. Freelance engineer building wallets that do not phone home.
I mined Bitcoin in 2011, cashed out the last coins in 2013, and bought coal for the winter; the ideas outlasted the coal. Twenty years an engineer, most of them spent on the boring parts that turn out to matter. At EthBelgrade 2025 I admitted on stage that I was not building the tools I wished existed, and asked the room to build them instead. Then I built: Keycard Pal, an air-gapped wallet for Status Keycard whose offline variant carries no network permission in its manifest; the keycard-py and keycard-nim SDKs; code merged into the JavaCard applet that runs on the card itself. Currently building on Logos under two won RFPs. EthBelgrade speaker three years running; earlier also at the Serbian Academy of Sciences.
