Merces: Private Token Transfers via MPC and CoSNARKs

Abstract

In this talk we present Merces2, a method of shielding ERC20 tokens to gain privacy using MPC and Collaborative SNARKs. It allows to hide user balances, as well as sender, receiver and transaction amounts when shielded tokens are transferred. Thereby, MPC is responsible for privacy, whereas the ZK proof ensures integrity, even if the MPC servers would collude. In other words, funds can never be misused by the MPC network. Our solution is currently deployed as a demo on Plasma testnet and achieves a throughput of 4 transactions per second.

Date
May 7, 2026
Location
ZK Summit 14 – Rome, Italy

Related