Most of my time goes into Revoke.cash, with CashScript as a long-running open source project on the side. Below that are earlier startups and open source tools, and a few things I made just for fun.
Founder · 2019 – now
See and revoke the token approvals you've given to apps across 80+ networks, so a hacked or malicious app can't drain your wallet. What started as a side project is now a company, used by more than two million people.
Creator & maintainer · 2019 – now
A high-level smart contract language and TypeScript SDK for Bitcoin Cash, inspired by Solidity. It started as my Master's thesis and is now the main way to write Bitcoin Cash contracts, used by apps like AnyHedge and Moria.
2024
Used open satellite data to help cacao and coffee importers comply with the EU Deforestation Regulation. We put it on hold when the regulation was postponed.
2019 – 2023
Verified Truffle smart contracts on Etherscan with a single command. It got more than 10,000 monthly downloads and was used by projects like Kleros and Superfluid.
2018 – 2023
Extra assertions for testing Solidity smart contracts with Truffle, like checking which events were emitted. It got more than 20,000 monthly downloads at its peak.
2021 – 2022
2020
Harberger tax ownership for ENS names, built at the ETHLondon hackathon. Owners set their own price and have to sell to anyone who pays it, which makes squatting expensive.
2022
Generative art made with my father, turning his hand-painted stripes into an algorithm on Art Blocks.
2015
A Minesweeper clone with hand-drawn graphics and sound effects that I recorded myself.
2017
A Tetris clone that I started for the GitHub Game Off 2017, with the theme "throwback".
