Anon Surveys

[Turupawn]

Abstract

Devs are needed to create an anonymous survey system using Zero Knowledge.

Context

ETH KIPU think tank recently did a community survey. Although the results are very nice and useful, they are hosted in a traditional database. This means that sensitive information is hard to verify. ZK technology can help making this information accessible, anonymous and verifiable.

1. First we would need a list of survey participants. We'll use this list as a whitelist embedded in a merkle tree.
2. Then we'll create a circuit that verifies merkle tree membership and that is able to cast a survey response proof.
3. We'll also need a smart contract that verifies and stores all the results submitted on a contract state.
4. Finally we'll need a relayer that is able submit the proof to the contract to preserve the users anonymity and also pays for their gas

I think this work can be achieved by combining this tutorial about zk voting and this backend example to submit transactions on-chain, also this circuit that supports ECDSA signatures and finally this tutorial that uses the EIP 712 to sign transactions and provide a good UX.

What is needed

Devs to develop the surveys circuit, contract and relayer. I would prefer if this is done using Noir because it has easy ECDSA support and the Aztec team is very active. Also a website frontend, ui, ux, wires, mockups. And also talk with Francis at ETH Kipu to the viability of making this happen with the help of ETH Kipu.