Walty
Open-source crypto wallet and QR payments for people and businesses.
I built Walty as an open-source app for everyday crypto and simple in-person checkout. People can create a wallet, move coins across several networks, and see everything in one place. Businesses can charge with a QR code or payment link, split a bill between customers, bring cashiers on board, and process refunds—without the product ever holding their private keys.
Problem
Many crypto apps either hold customer funds for you—which people increasingly distrust—or stay so technical that a shop cannot realistically take payments with a QR code, split a tab, or run a small team behind the counter.
Solution
I designed Walty so wallets and payments live in one product: everyday users get a straightforward wallet in the browser, while businesses get QR and link checkout, split payments, cashier access, and refunds, with sensitive operations staying on the user's side.
Outcome
The project ships as documented open source with a clear setup path, so contributors and self-hosters can run it locally and extend it—covering real shop-style collection alongside personal wallets.
Learnings
Strong security and a smooth interface are not opposites: keep sensitive material encrypted, never let the server touch the seed, and spell out the critical steps—users get real custody without a punishing UX.