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80 lines
4.0 KiB
Markdown
80 lines
4.0 KiB
Markdown
---
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id: "vOPRF"
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name: "Web2-ID Nullifiers using vOPRF"
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image: ""
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section: "pse"
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projectStatus: "active"
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category: "research"
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tldr: "Enabling pseudonymous systems for Web2 identities using verifiable Oblivious PseudoRandom Functions (vOPRFs)."
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tags:
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keywords: ["vOPRF", "nullifiers", "Web2", "privacy", "ZK proofs", "MPC"]
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themes: ["privacy", "identity", "zero-knowledge proofs"]
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types: ["research", "development"]
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links:
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github: "https://github.com/privacy-scaling-explorations/vOPRF-ID/"
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team:
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- name: "Magamedrasul Ibragimov"
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email: "curryrasul@pse.dev"
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---
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# Web2-ID Nullifiers using vOPRF
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## Project Overview
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Web2-ID Nullifiers is a cryptographic infrastructure project that enables pseudonymous systems for Web2 identities (like email or social accounts) using **verifiable Oblivious PseudoRandom Functions (vOPRFs)**. The project addresses the absence of native nullifiers in Web2 IDs—essential for enabling anonymous voting, forum participation, and other on-chain, privacy-preserving applications—by enabling secure, private nullifier generation tied to Web2 identity proofs (e.g., from zkEmail or TLSNotary).
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## Objective
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The goal is to create a secure, scalable protocol and supporting infrastructure that allows Web2 identities to be used pseudonymously across decentralized applications. This includes building a global registry akin to a "Web2 Semaphore," allowing users to reuse nullifiers without revealing their identity and without requiring trusted parties.
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## Project Status
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- **Stage:** MVP Development
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- **Status:** Active
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- **Team Lead:** Rasul Ibragimov
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- **Team Members:** Aditya Bisht (joining full-time in May)
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## Technical Approach
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The vOPRF protocol enables deterministic yet private randomness generation. Nullifiers are computed via MPC-based OPRF, using ZK proofs to tie identity commitments (from protocols like zkEmail) to blinded requests. The design protects user identity while ensuring nullifier uniqueness and verifiability.
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Key elements include:
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- **ZK proofs** for identity commitment verification without revealing the underlying identity
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- **MPC-based OPRF networks** to prevent single points of trust
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- **Global Registry Contract** for reusability across applications
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## Milestones
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- **February 2025:** Full protocol spec and ethresearch post published
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- See [ethresearch pos](https://ethresear.ch/t/web2-nullifiers-using-voprf/21762)t and full description of protocol [on Github](https://github.com/privacy-scaling-explorations/vOPRF-ID) and [this presentation](https://x.com/PrivacyEthereum/status/1903084082529010174)
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- **March 2025:** Initial implementation (vOPRF + zk circuits) completed see https://github.com/privacy-scaling-explorations/vOPRF-ID
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- **May 2025:** Launch of PoC—fork of Stealthnote enabling pseudonymous posting via Web2-derived nullifiers
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- **July 2025 (planned):** Production-ready OPRF server with key rotation and node monitoring
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- **Q3 2025 (planned):** Global Registry MVP for Web2-IDs
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## Applications
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The protocol enables a broad range of applications requiring privacy and pseudonymity:
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- **Anonymous voting** using Google or email accounts, without sign-ups or wallets
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- **Pseudonymous forums** tied to organizational emails (e.g., @ethereum.org)
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- **Anonymous airdrops** for GitHub users, Reddit accounts, etc.
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- **Web2-on-chain identity bridging** across zkEmail, TLSNotary, Anon Aadhaar, and more
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## Publications
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- [Part I: Web2 Nullifiers using vOPRF](https://curryrasul.com/blog/web2-nullifiers/)
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- [Part II: Web2 Nullifiers pt. II](https://hackmd.io/Mp4MQT41RGCyLvnuQtgbnw)
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- [Research post on Ethereum Research](https://ethresear.ch/t/web2-nullifiers-using-voprf/21762)
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## Resources
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- **GitHub Repository:** [vOPRF-ID](https://github.com/privacy-scaling-explorations/vOPRF-ID)
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- **Project Plan:** [HackMD](https://hackmd.io/v1W_X9FcSNi1978i_Rv2Tw)
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## Contact
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- **Magamedrasul Ibragimov:** [curryrasul@pse.dev](mailto:curryrasul@pse.dev) | [@curryrasul](https://twitter.com/curryrasul)
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- **Join** the PSE Discord](https://discord.com/invite/sF5CT5rzrR)
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