Demystifying MPC for coSNARKs: How to Collaboratively Prove Sumthing - DeFi Security Summit 2025
Duration: 00:58:12
Speaker:
Type: Talk
Expertise:
Event: Devcon
Date: Jul 2026
Speaker: Vesselin Velichkov, ZK Cryptography Researcher, OpenZeppelin
We present Sumthing, a toy SNARK protocol designed to illustrate how multiple parties can collaboratively generate a proof of knowledge using MPC. With worked-out Sumcheck-based examples, we demystify MPC's role in coSNARKs and verifiable outsourced computation.
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Every year, DSS brings together top minds in blockchain, auditing, and security — from white-hat hackers and protocol developers to academic researchers and industry leaders. The goal? To tackle the most pressing issues in DeFi security head-on — from smart contract exploits and cross-chain vulnerabilities to governance threats and beyond.
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