In the rapidly evolving world of Web3 and cryptocurrencies, the concepts of Know Your Customer (KYC) and Proof of Humanity (PoH) are gaining significant traction. These innovative approaches to identity verification and trust are reshaping how we interact with decentralized systems.

KYC in Web3​

KYC processes in Web3 are being reimagined to balance regulatory compliance with user privacy and decentralization:

Reusable KYC

Innovative solutions like Transak's Reusable KYC are emerging, allowing users to complete KYC verification once and reuse their credentials across multiple Web3 platforms¹. This approach:

• Uses decentralized tokens to represent verified KYC status
• Leverages zero-knowledge proofs to protect user privacy
• Streamlines onboarding processes across Web3 applications

On-Chain KYC

Some projects are developing on-chain KYC solutions that store encrypted identity information on the blockchain. This enhances transparency and auditability while giving users more control over their data².

Tokenized KYC

The IOTA Foundation and partners have developed a tokenized KYC solution that enables users to verify their identity in Web3 applications while maintaining control over their information³. This system:

• Performs remote identification compliant with anti-money laundering regulations
• Issues identity information in W3C Verifiable Credential format
• Allows sharing of verified information in a permissionless way for off-chain use cases

Proof of Humanity (PoH) in Web3​

PoH systems are crucial for verifying that participants in Web3 ecosystems are real humans, preventing Sybil attacks and bot manipulation:

Decentralized Verification

Various PoH projects are developing decentralized approaches to human verification, often involving tasks designed to be difficult for machines⁴. These systems aim to:

• Prevent Sybil attacks in decentralized networks
• Enhance trust and transparency in digital interactions
• Enable fairer distribution of resources and opportunities

Reusable Verification

PADO introduces a new approach to PoH by re-using existing identity/KYC results⁵. For example:

• An attestation can be created for a user based on their activity on a Web2 platform (e.g., Twitter)
• This attestation can then be reused by Web3 protocols to verify the user's humanity

Biometric Approaches

Some projects, like Humanity Protocol, are exploring the use of biometrics (e.g., palm scans) combined with zero-knowledge proofs to create secure and private Web3 identity systems⁶.

Challenges and Considerations​

While these innovations show promise, there are challenges to overcome:

• Balancing privacy with regulatory compliance
• Ensuring inclusivity and accessibility
• Addressing scalability issues for large-scale adoption
• Maintaining interoperability across different Web3 platforms

As the Web3 ecosystem continues to evolve, KYC and PoH solutions will play a crucial role in creating secure, trustworthy, and user-friendly decentralized applications while preserving the core principles of Web3.

Docusaurus is a fantastic tool to build a document site.

I used the following steps to deploy this notebook site to keep track of French learning.

Create a docusaurus app​

npx create-docusaurus@latest my-website classic
cd my-website
npx docusaurus start

Push to GitHub​

Create a new repo on GitHub.

git init
git add .
git commit -m "my commit"
git remote set-url origin git@github.com:username/repo.git
git push origin main

Deployment​

Create an account on Netlify (login with GitHub) and follow the instructions to deploy the repo from your GitHub account. This repo can even be a private repo.

More references​

• Markdown Features
• Deployment
• MDX