Welcome to Privacy & Scaling Explorations
A multidisciplinary team supported by the Ethereum Foundation. PSE explores new use cases for zero knowledge proofs and other cryptographic primitives through research and proof-of-concept implementation.
We facilitate the integration of ZK primitives into decentralized applications.
Projects
Zkopru
Zkopru is an optimistic rollup that uses zero knowledge proofs to enable private, low-cost transactions with ETH, ERC-20s and NFTs on layer 2.
BLS Wallet
Reduce transaction costs on evm-L2s using BLS signatures. The smart contract wallet also includes: recovery, multi-action, gas-less transactions, and upgradability.
zkEVM
A zk-rollup that can generate zk proofs for general EVM verification. This allows us to build a fully EVM-compatible zk-Rollup, which any existing Ethereum application can easily migrate to.
MACI (Minimal Anti-Collusion Infrastructure)
MACI uses zero knowledge proofs for collusion resistance in blockchain voting (such as quadratic funding mechanisms) by making it impossible for anyone other than the vote coordinator to verify how a specific user voted. MACI also ensures correct execution of the votes, allowing anyone to verify the results.
Unirep
Unirep allows anonymous members of a group to give, receive, and prove reputation without revealing their identity. Applications or people can act as attesters and build their own reputation tokens on top of a shared Unirep contract.
Semaphore
Semaphore is a protocol, designed to be a simple and generic privacy layer for Ethereum DApps. Using zero knowledge, Ethereum users can prove their membership of a group and send signals such as votes or endorsements without revealing their original identity.
Interep
Private reputation and identity system allowing services to verify that users belong to a certain group or meet certain reputation criteria without revealing their identities. Users can anonymously export reputation from platforms such as Twitter and Github.
Clr.fund for Everyone
Infrastructure to make it easy for any community to run their own CLR round with clr.fund.
Rate Limiting Nullifier
RLN is a construct based on zero-knowledge proofs that enables spam prevention mechanism for decentralized, anonymous environments. In anonymous environments, the identity of the entities is unknown.
zk-chat
Anonymous and private chat environments, using Interep for a privacy preserving registry and sybil resistance and RLN for spam protection.
COCO
Collaborative content curation of online communities using a double-or-nothing challenge mechanism.
Trusted Setup
Open source infrastructure for running a trusted setup ceremony, in which many people participate in generating entropy which will secure a cryptographic protocol. Perpetual Powers of Tau: A universal ceremony for the initial phase of a trusted setup. MPC Phase 2 UI: UI for a CLI or browser-based ceremony for the second, circuit-specific phase for Groth-16 SNARKs.
