World has released the fourth major version of its World ID proof-of-human protocol, moving from a device-bound credential model to an account-based architecture with a dedicated mobile app and single-use nullifiers to prevent cross-site correlation. The release was unveiled at the company’s Lift Off event in San Francisco on April 17, 2026, and arrived with flagship integrations from Zoom and DocuSign that signal mainstream professional adoption of the credential.
The account-based architecture replaces the prior model in which a World ID credential was tied to the specific device used at Orb enrollment. Users now have a World ID account that supports key rotation, multi-device sessions, and account recovery, with cryptographic proofs generated per relying party rather than reusing a persistent identifier. Single-use nullifiers mean each verification generates a one-time token specific to the consuming service, preventing a World ID holder from being tracked across services that share verification events. A new dedicated World ID mobile app, separate from the World App wallet, handles proof-of-human flows exclusively, and an open-source SDK accompanies the release.
Zoom is adding a native integration with World’s Deep Face technology, letting meeting hosts require cryptographic proof that each participant is a live human matched to their enrolled identity. Deep Face combines three signals at call time: a signed reference image from Orb enrollment, a real-time face scan on the participant’s device, and the live video frame visible to others. All three must cryptographically match, producing a “Verified Human” badge on the participant’s tile. Hosts can gate admission through a Deep Face waiting room or invoke mid-call checks for sensitive moments such as wire authorizations. The feature addresses the rise of real-time deepfake impersonation, including the Arup case in Hong Kong that resulted in the equivalent of 25 million dollars wired after a call populated by deepfaked executives.
DocuSign is integrating World ID as an additional proof-of-human layer inside its agreement workflows, complementing rather than replacing document-and-selfie identity verification. DocuSign’s existing IDV partners including Onfido and Socure verify who a signer is; World ID instead answers whether the signer is a unique human rather than a bot or AI agent, a distinction that matters as automated agents increasingly execute agreements on behalf of principals.
World cited a network scale of approximately 18 million verified humans across 160 countries through a global network of Orb devices, following a six-city US launch and expanded Orb deployments in Japan. Existing World ID credentials remain valid under the new architecture. The 4.0 release also shipped integrations with Tinder, Okta, Vercel, Browserbase, and Exa, reflecting the company’s reframing into a proof-of-human credential layer.
Sources: World, TechCrunch
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By Ji-seo Kim
