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Sunscreen is building the next generation of privacy technology using fully homomorphic encryption (FHE) and zero knowledge proofs. Our unique approach to private computation allows us to address a broader range of applications than possible with zero knowledge proofs alone. In the coming years, we plan to deploy our solution across web3 to solve front-running, enable hidden trading strategies, and support private voting.


Bounty 1: Build an innovative app using Sunscreen’s FHE compiler

(1st place: $1250 🥇, 2nd place: $750 🥈)

Bounty 2: Build an innovative app on Sunscreen’s private testnet, Parasol

(1st place: $1250 🥇, 2nd place: $750 🥈)

All qualifying submissions demonstrating novel use of FHE using Sunscreen’s tooling will share the remaining prize pool.


  • Novel application of FHE using Sunscreen’s libraries (e.g. our FHE compiler, testnet Parasol).
  • Demonstrate creativity/technical sophistication in addressing a problem.
  • Provide clear documentation–including how to use your application, the design, how it works, features, and its impact.
  • Open source and viewable on Github.

Nice to haves:

  • User-friendly interface.
  • Short video walking through your application.
  • Thorough testing.


Getting Started

Hackathon guide: https://hackathon.sunscreen.tech

FHE compiler documentation: https://docs.sunscreen.tech

Playground (for testing FHE): https://playground.sunscreen.tech

Discord: https://discord.gg/sunscreen