Answers to some of the most frequently asked questions relating to privacy and the Worldcoin project.

The above content speaks only as of the date indicated. Further, it is subject to risks, uncertainties and assumptions, and so may be incorrect and may change without notice. A full disclaimer can be found in our Terms of Use and Important User Information can be found on our Risks page.

Worldcoin Privacy FAQs

If the Worldcoin project is successful, it could improve many digital interactions that are currently not possible on a global scale.

Five important potential applications of Worldcoin

Iris codes help make it possible for biometrics to be used to securely verify an individual’s uniqueness while preserving privacy.

What is an iris code, and how does it preserve privacy?

If you haven’t verified your World ID yet, you can still reserve WLD token grants and redeem them by visiting an Orb within 12 months.

How to reserve WLD tokens 

Answers to important questions about the intentions behind Worldcoin, the project’s compliance with local laws and more.

Eligibility for Worldcoin (WLD) tokens is restricted based on geography, age, and other factors. WLD are not intended to be available to U.S. residents. For details, go to: www.worldcoin.org/tos. Crypto products can be highly risky. Important User Information can be found at www.worldcoin.org/risks.

Regulatory compliance, personal privacy and equitable access with Worldcoin

Learn about zero-knowledge proofs, Semaphore and how they help the World ID protocol enable anonymous actions.

Intro to zero-knowledge proofs, Semaphore and their application in World ID

The Worldcoin community is building a more human economic system, and developers can start building here.

How to build with Worldcoin

Starting in April 2023, two separate security assessments were conducted on the Worldcoin protocol. Learn about the results. 

Worldcoin protocol security audit reports

Worldcoin aims to increase economic opportunity and enable global democratic processes in the Age of AI.

Introducing Worldcoin: A letter from Alex Blania and Sam Altman

All about World App: What is it, what can you do with it and what makes it different from other digital wallets? 

The above content speaks only as of the date indicated.  Further, it is subject to risks, uncertainties and assumptions, and so may be incorrect and may change without notice. A full disclaimer can be found in our Terms of Use and Important User Information can be found on our Risks page.

World App FAQs

What are iris biometrics, how do they work and what’s the difference between using them for 1-to-1 authentication vs. 1-to-N verification?

A look at iris biometrics: From Optic ID to World ID

TFH co-founders Sam Altman and Alex Blania sat down in Seoul to discuss and answer questions about the Worldcoin project.

The above content speaks only as of the date indicated. Further, it is subject to risks, uncertainties and assumptions, and so may be incorrect and may change without notice. A full Disclaimer can be found in our Terms of Use.

Key takeaways from Worldcoin’s Seoul meet up with
Sam Altman
and Alex Blania

What is the Orb? How is it used? Is it secure? Find answers to all of your most frequently asked questions about the Orb here.

The Orb FAQs

The three symbols that make up the Worldcoin logo combine to convey a simple message: the global economy belongs to everyone.

The story behind the new Worldcoin logo

What is World ID? How is it issued? Is it linked to biometric data? Find the answers to the most common World ID FAQs here.

World ID FAQs

Learn how to download and use World App, as well as how to sign up for your verified World ID.

* Worldcoin tokens are not intended to be available to individuals or companies who are residents of, or are located, incorporated or have a registered agent in, the United States or other restricted territories.

How to sign up for World ID and use World App

When it came to designing the Orb for Worldcoin, the team at TFH had one goal in mind: It must be simple enough to speak to everyone.

Designing the Orb:
The universal value of simplicity

Find out what happened when the Orb made its first visit to the Japanese capital.

Hackathon recap:
The Worldcoin Orb visits Japan

As AI advances, the ability to identify human-created online content is becoming a necessity. That’s where PoP comes in.

Proof of personhood:
What it is and why it’s needed

From their higher entropy to their inclusiveness, privacy-preserving iris biometrics are the key to proving personhood at a global scale.

All about entropy:
Why irises beat faces and fingerprints for proving personhood

Important information about some of the most common myths and misconceptions about the Worldcoin protocol.

Debunking the most common myths about Worldcoin

Take a first look at the decentralization measures underway at Worldcoin in the areas of governance, engineering and operations.

A primer on decentralization at Worldcoin

Worldcoin is an open source protocol, or system, created to help give everyone access to the global economy. Here’s how it works.

What is Worldcoin, and how does it work?

Worldcoin Operators are a vital part of the Worldcoin ecosystem. But what exactly are they, and how can you become one? 

This content is provided for informational purposes only and should not be relied on as legal, business, investment, or tax advice. The content speaks only as of the date indicated. Any projections, estimates, forecasts, targets and/or opinions expressed in these materials are subject to change without notice. Certain information contained in here may have been obtained from third-party sources. While taken from sources believed to be reliable, Worldcoin has not independently verified such information and makes no representations as to its accuracy.

What is a Worldcoin Operator, and how can I become one?

The Orb is a biometric imaging device that privately and securely verifies an individual’s unique personhood. Here’s what that means.

Understanding the Orb and why Worldcoin uses biometrics

We believe that privacy is a fundamental human right. Learn about our state of the art privacy protections today and what’s ahead.

Solving for privacy:
Our approach to keeping information safe

Akarsh Sanghi, Alex Blania, Christian Brendel, Chris Waclawek, Dan Girshovich, Luis Wenus, Misha Wilcockson, Philipp Sippl, Philipp Strack, Remco Bloemen, Sam Altman, Sandro Herbig, Shravan Nageswaran, Sven Seuken, Shuby Deshpande, Tiago Sada, and the rest of the Worldcoin Team

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An Internet for Humans: Proof-of-Personhood Explained

Who Watches the Watchmen? A Review of Subjective Approaches for Sybil-resistance in Proof of Personhood Protocols

Hard Problems in Cryptocurrency: Five Years Later

Digital identification: A key to inclusive growth

Counting the uncounted: 1.1 billion people without IDs

CAPTCHA: Using Hard AI Problems For Security

Using Human Cognitive Limitations to Enable New Systems

Probing the Uniqueness and Randomness of IrisCodes: Results From 200 Billion Iris Pair Comparisons

Roll_up / roll_back snark side chain ~17000 tps

Credible Neutrality As A Guiding Principle

How the Launch Works

Introducing Worldcoin

The thinking, ideas, and technology behind a more human economic system.

The Worldcoin Blog