One person, one…

About World ID

World ID is a digital passport that lets you prove you are a unique and real person while remaining anonymous.

Use Sign in with Worldcoin to authenticate into web, mobile, and decentralized applications, and privately share your personhood verifications including phone number for ease, or biometrics for the maximum level of assurance.

Learn more →

Building with World ID

Worldcoin is an open and permissionless protocol, which means anyone can integrate with it without involvement from the teams that contribute to its development.

The SDK makes web, mobile and onchain integrations fast and simple. It includes tools like a web widget (JS), Developer Portal, development simulator, examples, guides and more.

Developer Docs → Join SDK Waitlist →

Ideas to for Apps & Integrations

<aside> <img src="/icons/credit-card_pink.svg" alt="/icons/credit-card_pink.svg" width="40px" /> DeFi and Fintech

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• Undercollateralized lending & credit
• Credit card chargeback protection
• Zero-knowledge compliance with nationality, age, and sanctions
• Private transaction mixer with daily amount limits and ZK compliance for MLP
• Private decentralized credit score

<aside> <img src="/icons/government_purple.svg" alt="/icons/government_purple.svg" width="40px" /> Voting

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• Deduplication in government elections
• Novel DAO governance including quadratic, and conviction voting
• Anonymous online polls platform
• Snapshot integration
• Change.org integration

<aside> <img src="/icons/following_blue.svg" alt="/icons/following_blue.svg" width="40px" /> Social Media

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• Bot protection for posting, views, likes
• Filter posts, comments, replies, and notifications to verified accounts
• Community moderation tools
• Content attribution to prevent deep fakes & misinformation
• Discord, Twitter, Lens, and Farcaster integrations

<aside> <img src="/icons/atm_green.svg" alt="/icons/atm_green.svg" width="40px" /> Wealth Distribution

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• Government wellfare programs
• Non-profit and refugee aid distribution
• Privately or publicly funded Universal Basic Income

<aside> <img src="/icons/helicopter_yellow.svg" alt="/icons/helicopter_yellow.svg" width="40px" /> Token Airdrops

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• One person one share crypto airdrops
• Incentivized crypto airdrops with quadratic rewards / caps per person
• Quests and learn-to-earn distributions

<aside> <img src="/icons/art_orange.svg" alt="/icons/art_orange.svg" width="40px" /> NFTs

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• One person one PFP avatar collection
• Soulbound NFTs you can transfer between addresses of the same person
• POAP integration

<aside> <img src="/icons/gift_red.svg" alt="/icons/gift_red.svg" width="40px" /> Customer Incentives

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• Abuse resistant coupons and loyalty programs for retail businesses
• One-time software free trials
• Fraud-proof referral programs
• Fee subsidies with per-person limits

<aside> <img src="/icons/shopping-cart_pink.svg" alt="/icons/shopping-cart_pink.svg" width="40px" /> Marketplaces

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• Fake review and transaction prevention
• True merchant & customer ratings
• One person one item purchase

<aside> <img src="/icons/ticket-admission_purple.svg" alt="/icons/ticket-admission_purple.svg" width="40px" /> Events

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• Ticket scalper protection
• Private age verification
• Free bandwidth capped WiFi