What Is Worldcoin (WLD) and How Does It Work?

What Is Worldcoin (WLD)?

Worldcoin is an ecosystem for digital identity and financial applications that has been operating under the name World since October 2024. The token is still called Worldcoin (WLD). The main question is: how can you prove online that you are a real, unique person without having to share your name or other personal details every time?

The ecosystem consists of World ID, the Orb, World App, World Chain, and the WLD token. World ID is proof of humanness, the Orb is the device used for verification, World App is the app where you manage your wallet and World ID, and World Chain is the Ethereum Layer 2 for financial activity within the ecosystem.

WLD is the token tied to it. It is an ERC-20 token on Ethereum. For everyday use within the ecosystem, WLD is bridged to World Chain, meaning it is technically moved through a connection between Ethereum and that Layer 2.

World ID is not a replacement for a government-issued ID card. It is meant to prove that you are one unique human. A connected service can check that without you having to reveal your full identity.

Key Takeaways

• World combines digital identity, an app, a Layer 2, and the WLD token.
• World ID lets you prove that you are a unique human without revealing your identity.
• The Orb checks biometric data to verify that someone is real and unique.
• WLD is an ERC-20 token on Ethereum and is mainly used on World Chain.
• Privacy, physical hardware, and governance that is not fully decentralized yet are important points to watch.

How Does Worldcoin Work?

You start in World App, where you manage your wallet and World ID. Your World ID data is stored on your own device. This is called self-custody. A connected service can still create its own user account for you.

If you want a verified World ID, you visit an Orb. That device first checks whether a real person is present and whether that person has not already been registered. After a successful check, a Proof of Human credential is linked to your World ID. Proof of Human here simply means: a digital proof that you are a unique human.

After that, you can prove to connected services that you are such a verified user. This is done with a zero-knowledge proof. This is a technical proof that lets you show something is true without revealing the underlying data.

Say an app only wants to allow one account per person. With World ID, you can prove that you are a verified unique human without giving that app your name or iris data. That way, a service can limit bots, duplicate accounts, and Sybil attacks. In a Sybil attack, one party pretends to be many different users.

World Chain forms the financial infrastructure of the ecosystem. It is an Ethereum Layer 2: a network built on top of Ethereum that is meant to offer lower transaction fees and more capacity than interacting directly on Ethereum itself.

Worldcoin (WLD) Overview

What Role Does World ID Play Within Worldcoin?

World ID helps connected services limit participation to unique people. For example, a service can use it to let each verified user vote once or claim an action once.

External apps can integrate World ID through a software development kit. The verification does not automatically share your name or iris data with those apps. That does not mean you are fully anonymous, though: an app may also collect other data or ask for additional information.

How Does Verification Through the Orb Work?

The Orb is a special hardware device that checks whether a real and unique person is standing in front of it. To do that, it uses multiple cameras, infrared sensors, depth measurement, and thermal signals. These checks are meant to distinguish a living person from possible spoofing attempts, such as trying to trick the system.

During verification, the Orb processes iris images and other images locally. The Orb then creates a signed iris code: derived biometric information used for the uniqueness check. That is not the same as a regular photo of your iris.

The encrypted verification data goes to the user's device. The images are then removed from the Orb. Multi-party computation is used for the comparison that is meant to prevent duplicate registrations. In that setup, the comparison is split across multiple parties, so there does not need to be one central database with readable biometric data.

Biometric data is still a sensitive topic. Even derived biometric information needs careful protection. Orb verification is only available to adults, and Orbs are not available in every region.

What Is the Role of WLD Within the Worldcoin Ecosystem?

WLD is the crypto token of the World ecosystem. The token is designed for future protocol governance, together with World ID. Governance here means decisions about the rules and development of the protocol.

The design leaves room for governance with tokens and for ways verified people can vote. Right now, World Foundation still carries out the governance. The goal is to gradually decentralize this further.

In regions where this is allowed, users who meet the requirements can claim WLD after they have received a recognized World ID credential. How much WLD someone can claim and how further distribution to users works can change through governance. Availability depends on location, age, and other eligibility requirements, among other things.

World Chain is the main network for using WLD within the ecosystem. The token exists on Ethereum and is available on World Chain through a bridge.

World Foundation has also announced a model for World ID fees. Under this model, connected applications pay fees in WLD for using World ID, while protocol use for end users stays free. These fees are separate from gas, the transaction fees of a blockchain. An external app can charge additional fees on its own.

The initial maximum supply is 10 billion WLD. No new WLD can be minted until July 24, 2038. After that, governance may activate inflation, with a hard cap of 1.5% per year. Of the initial 10 billion WLD, 75% is allocated to the World Community. This allocation is meant for users, ecosystem development, and network activities. That does not mean all tokens have already been distributed to users. The remaining 25% is allocated to the TFH team, TFH investors, and a TFH reserve.

What Is the Difference Between Worldcoin and Bitcoin?

Worldcoin and Bitcoin have very different starting points. Bitcoin is designed as peer-to-peer electronic money. World is a broader ecosystem built around Proof of Human, a wallet, World Chain, and the WLD token.

• Network and token: Bitcoin has its own Layer 1 blockchain. WLD is an ERC-20 token on Ethereum and is mainly used through World Chain, an Ethereum Layer 2.
• How the system works: Bitcoin organizes and secures transactions through mining and Proof of Work. WLD is not itself an independent blockchain, so it does not have its own mining or consensus mechanism.
• Identity verification: World ID uses the Orb and biometric verification to prove that people are unique. For receiving or sending bitcoin, that kind of personal verification is not part of the Bitcoin protocol.
• Supply: According to the consensus rules, Bitcoin has a fixed maximum supply of 21 million bitcoin. WLD has an initial maximum supply of 10 billion tokens. Starting July 24, 2038, governance can activate up to 1.5% inflation per year under certain conditions.
• Governance: WLD is designed with a governance function within World, and World Foundation currently carries out that governance. Bitcoin does not have a central foundation that manages issuance or protocol governance.

In short, Bitcoin is mainly about a separate network for digital money. World focuses on proving humanness, with WLD as the token inside that broader ecosystem.

How Did Worldcoin Start?

The original idea for World came from Sam Altman, Alex Blania, and Max Novendstern. They founded Tools for Humanity together and put together a team to develop the technology.

Tools for Humanity supported a multi-year beta phase and worked on the Orb and World App, among other things. World Foundation was founded on October 31, 2022, as the non-profit steward of the protocol and ecosystem.

The public rollout of Worldcoin and the launch of WLD took place on July 24, 2023. After that, the main WLD activity first moved to Optimism and then to World Chain starting October 17, 2024.

So Sam Altman, Alex Blania, and Max Novendstern are the original initiators of World and co-founders of Tools for Humanity. That does not mean they are individual owners of a decentralized network.

What Are the Benefits of Worldcoin?

World offers the following possible benefits:

• Checks for unique users: World ID gives services a technical tool to check whether a user is a unique human. That can help limit bots and multiple accounts per person.
• Privacy-preserving verification: With zero-knowledge proofs, you can prove that you are a verified unique human without revealing your name or other identity details to a service.
• Local processing in the Orb: The Orb processes images locally, sends encrypted verification data to the user's device, and then removes the images from the Orb.
• Layer 2 infrastructure: World Chain is designed for lower transaction fees and more capacity than direct interaction on Ethereum Layer 1.
• Benefits for verified users: World Chain can offer verified World ID holders priority in block space and a gas subsidy for certain transactions.

These are design goals and technical possibilities, not guarantees. Whether they work well in a specific app also depends on how that app is built and used.

What Are the Downsides and Risks of Worldcoin?

The main risks are biometric data, dependence on physical hardware, centralized governance, and the value and issuance of WLD.

• Biometric data: Orb verification processes biometric data. That makes privacy, consent, data security, and regulatory compliance important issues.
• Oversight and rules: On December 19, 2024, the Bavarian privacy regulator BayLDA imposed corrective measures related to, among other things, data deletion and explicit consent. At the time, the regulator said the company planned to challenge the decision.
• Physical hardware required: Iris verification requires specialized Orbs and an operational network around them. A global rollout is therefore capital-intensive and operationally complex.
• No perfect hardware security: A hardware system that interacts with the physical world can never be perfectly secure. Live-person detection, protection against spoofing, and hardware security all need ongoing improvement.
• Decentralization is still in progress: Tools for Humanity built the Orb, and World Foundation currently carries out protocol governance. Further decentralization of hardware, verification, and governance is still a work in progress.
• Changing token issuance: The circulating supply of WLD can increase as existing tokens are released to users, team members, and investors. No new tokens need to be minted for that. A larger supply can create selling pressure, but the effect on price also depends on demand. The issuance of World Community tokens depends in part on governance decisions.
• Not available everywhere: WLD and WLD claims are not available everywhere because of regional and legal restrictions.

Conclusion

World, formerly Worldcoin, helps users prove to connected services that they are a unique human. It combines biometric verification through the Orb with World ID and zero-knowledge proofs.

WLD is the token within this ecosystem, with a planned role in governance and the announced model for World ID fees. Anyone evaluating the project should consider both the possible uses and the risks, including biometric data processing, dependence on physical hardware, centralized governance, and price swings.