https://en.m.wikipedia.org/wiki/Quadratic_voting#Applications

In Leipzig, Germany, Volt Germany — a pan-European party — held its second party congress and used quadratic voting to determine the most valued topics in their party manifesto among its members. Partner with Deora, Leapdao, a technology start-up company, launched its quadratic voting software consisting of a ‘burner wallet’. Since there was limited time and it was a closed environment, the ‘burner wallet’ with a QR code acted as a private key that allowed congress to access their pre-funded wallet and a list of all the proposals on the voting platform. The event was considered a success because it successfully generated a priority list that ranked the importance of the topics.

leapdao.org doesn’t respond anymore. Even the IPFS site doesn’t respond, a bad sign.