BringID is a privacy-preserving protocol that enables users to prove humanness using verified Internet credentials — without ever linking accounts or revealing identity.

This repo contains the technical paper describing the BringID protocol design, trust assumptions, and security considerations.

📄 Read the paper → whitepaper.md

BringID allows users to privately verify ownership of Web accounts (e.g., Uber, GitHub, Airbnb) using MPC-TLS, and then generate unlinkable identity proofs using Semaphore.

It offers a practical and modular approach to fighting Sybil attacks in crypto by increasing the cost of forgery while preserving privacy.

• MPC-TLS Verifications
  Web credentials are verified via TLS Notary without exposing plaintext data.

• Privacy via Zero-Knowledge
  Credentials are converted into unlinkable commitments and grouped by type in separate Semaphore groups.

• Composable Proofs
  Users generate zero-knowledge inclusion proofs from multiple credential groups to prove humanness.

• Custom Trust Scoring
  Verifying parties define their own trust rules, combining group proofs with credential age, weights, and thresholds.

• Privacy-first: No linking between Web accounts or crypto addresses
• Progressive decentralization: Launch with minimal trust, decentralize over time
• Sybil deterrence: Cost of forgery exceeds reward when verifying parties use good scoring policies

We're looking for feedback from identity researchers, privacy builders, and crypto devs.

• Telegram Group
• Open a GitHub issue to discuss or suggest improvements

This project is open-sourced under the MIT License.