I organize and compete in hackathons around the world.
I'm passionate about Bitcoin & freedom tech.
Personal Site: alexlewin.xyz
- 🦀 Clawthing Store - AI-designed crab merch & apparel. Marketed towards agents. Article
- 🛠️ Fedimint SDK - Tools for developing Fedimint clients. (Author)
- 🎨 Web to SVG Extension - Chromium extension to capture any DOM element as PNG, JPEG, or SVG.
✈️ BitcoinRamps - Compare fees, spreads, privacy, and KYC requirements across top Bitcoin exchanges.- ⏱️ LastPayWins - Reddit's r/thebutton but with sats. Last one to pay when the timer hits zero wins.
- 🎵 PlebFM - Bitcoin-Powered Jukebox. An Ongoing Auction for the Next Song.
- ⚖️ Rough Consensus - Oxford Debate Voting platform. Used for live debates at Bitcoin++ Mempool Edition 2025.
- ⚡ Lightning-Welder - Helps legacy lightning wallets pay bolt12 offers.
- ♟️ Chesscup-hack - World-record holding puzzle-solver for chesscup.org.
- 🎰 Tapass.fun - pump.fun parody for Lightning Labs's Taproot Assets.
- 💻 kattis - Solved Kattis competitive programming problems.
- How to Win Every Hackathon - Step-by-step guide to win hackathons (BTC++ Florianópolis, Brazil - February 2025)
- Building Sovereign Banks with Fedimint - Recreating sovereign community banks with chaumian ecash mints + bitcoin. Article
- Scaling Lighting panel - Panel discussing lightning scalability and payment privacy (Lightning++ Berlin, Germany - October 2025)
- Fedimint SDK Deep Dive - How to build a fedimint wallet in under 20 minutes without Rust (Bitcoin++ Berlin, Germany - October 2024)
- Fedimint SDK workshop - Btrust Developer day workshop @ Africa Bitcoin conference 2024.