What is H?

Question

What is H?

Accepted Answer

## TLDR
Humanity Protocol ($H) is a decentralized identity network that uses privacy-preserving biometric technology to verify unique human users for Web3 applications, creating a Sybil-resistant "human layer" for the internet.

1. **Solves Web3's Identity Problem** – It addresses the lack of robust, privacy-preserving identity mechanisms that leave dApps vulnerable to bots and Sybil attacks.
2. **Privacy-First Technology** – Uses palm-scan biometrics and zero-knowledge proofs to verify users without storing or exposing their personal data.
3. **Ecosystem Foundation** – Aims to be the foundational identity layer, enabling fair airdrops, reputation systems, and secure access across Web3.

## Deep Dive
### 1. Purpose & Value Proposition
Web3 currently lacks a reliable way to distinguish real human users from bots, a vulnerability known as Sybil attacks. Humanity Protocol exists to solve this by providing a decentralized, privacy-preserving identity verification system. Its core value is returning control of identity data to users, moving away from the centralized or federated models of Web2 where trusted issuers monopolize user data ([Humanity Protocol](https://humanity-protocol.gitbook.io/humanity-protocol/human-centric-blockchain/why-does-humanity-protocol-matter)). The protocol's goal is to onboard the first billion humans into Web3 by protecting their digital identity.

### 2. Technology & Architecture
The protocol is built as an Ethereum-compatible zkEVM Layer-2 blockchain, ensuring fast and cheap transactions. Its key innovation is a **Proof-of-Humanity (PoH)** consensus mechanism. Verification involves a palm scan—a less invasive alternative to iris scanning—processed locally on a user's device into an irreversible hash. This, combined with **zero-knowledge proofs (ZKPs)**, allows the network to cryptographically confirm a user is a unique human without ever accessing the raw biometric data. Personal data is stored off-chain in decentralized storage, with access controlled solely by the user.

### 3. Ecosystem Fundamentals
Verified users receive a non-transferable **Human ID**, a portable digital identity. This ID can be used to create verifiable credentials (e.g., proving age or citizenship) that users can selectively share with applications ("Verifiers"). This functionality enables core Web3 use cases like bot-resistant fair airdrops (termed "Fairdrops"), reputation-weighted lending, and Sybil-resistant governance. By providing this foundational trust layer, Humanity Protocol aims to be the "human layer for Web3" ([Introduction to Humanity Protocol](https://humanity-protocol.gitbook.io/)).

## Conclusion
Fundamentally, Humanity Protocol is a privacy-centric infrastructure project that uses cryptographic proofs and biometrics to authenticate human uniqueness, aiming to solve one of Web3's most critical trust issues. Can its balance of user privacy and robust verification achieve the widespread adoption needed to become Web3's default identity layer?

What is Humanity Protocol (H)?

Deep Dive

1. Purpose & Value Proposition

2. Technology & Architecture

3. Ecosystem Fundamentals

Conclusion

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