World, previously called Worldcoin, the decentralized identity project co-established by OpenAI leader Sam Altman, has released ProveKit as an open-source zero-knowledge identity verification toolkit.
A representative for the World Foundation informed The Block that this release opens ProveKit up to external developers after the framework was initially utilized within World ID via an early access program back in April.
World explained that ProveKit enables individuals to formulate cryptographic assertions straight on their web browsers or mobile devices. This toolkit permits users to validate attributes such as citizenship, age, or possession of a legitimate ID credential without disclosing the underlying personal information. The verifying party simply gets confirmation regarding the specific validated claim, according to World.
“We are now launching ProveKit open source because we believe this technology is key for privacy-preserving authentication and must be neutral and permissionless,” the spokesperson stated.
The organization noted that ProveKit relies on on-device proof generation instead of delegated proving, eliminating the necessity to transmit private personal details to third-party servers for computation. World stated that this approach lowers data exposure risks and ensures users maintain authority over their private data.
Earlier in the week, experienced cybersecurity journalist Brian Krebs revealed that the Federal Bureau of Investigation’s New Orleans field office is investigating a dark web platform named Nexus, which has been marketing scans of over 153 million Canadian and U.S. driver’s licenses originating from a data breach tied to identity verification firm IDScan.net.
“Identity documents should only be authenticated using zero-knowledge proofs,” Remco Bloemen, head of blockchain at the World Foundation, wrote in a post on X. “Stop revealing all your personal details just to prove you have a valid driver’s license.”
World’s ProveKit
Development on ProveKit spanned approximately two years, the representative pointed out. The toolkit provides compatibility with Noir, the Rust-inspired programming language crafted by Aztec for building zero-knowledge programs, allowing builders to construct novel provable claims without embedding those assertions natively inside an application bundle, the project mentioned.
Additionally, ProveKit is engineered to operate on ordinary consumer hardware, covering smartphones alongside browsers. Performance benchmarks indicate that it can generate proofs within seconds on a standard smartphone and under half a minute on a lower-end testing device.
World affirmed that data stays inaccessible to Tools for Humanity, the World Foundation, or any outside entity because World ID credentials can store details from NFC-enabled identification documents directly on a user’s device. Near Field Communication (NFC) represents a short-range wireless communication method, and NFC-compatible documents include national identification cards and passports that smartphones can scan when placed nearby. The representative stated that these papers feature cryptographic signatures from their issuers, enabling that signature to be authenticated and verified inside a zero-knowledge circuit.
ProveKit targets 128-bit post-quantum security levels and omits the need for a trusted setup ceremony. The spokesperson noted that this implies the most advanced known threats, including quantum computing attacks, will likely remain computationally impossible at that security threshold.
ProveKit version 1 is ready for production and tuned for off-chain checks performed by computers, mobile gadgets, and servers, according to World. The team added that they are currently building ProveKit v2, which aims to decrease proof sizes, cut down proving durations, lower memory consumption, and introduce more efficient on-chain validation mechanisms.
“One path we’re exploring is support for Groth16, a zk-SNARK proving scheme whose proofs are very efficient to verify on blockchains including World Chain, Ethereum, Base, and Solana,” the representative remarked. “The previous version of World ID was based on the Ethereum Foundation’s Semaphore protocol, which also uses Groth16,” they added.
World continues advancing privacy-focused identity instruments while its biometric identification initiative encounters regulatory inquiries across multiple regions, such as Kenya, Spain, South Korea, Brazil, Indonesia, Hong Kong, and the Philippines. World has emphasized its ongoing collaboration with regulators throughout its worldwide expansion.
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Originally published at https://www.theblock.co/news/ecosystems/2026-09-02-world-provekit-zero-knowledge-identity-proving-toolkit-413364.
