World, the biometric identity project formerly known as Worldcoin, has open-sourced ProveKit v1, a production-ready zero-knowledge proving toolkit already integrated into World ID so users can generate cryptographic proofs of personal claims on smartphones and web browsers without revealing underlying data. The toolkit targets 128-bit post-quantum security through a hash-based WHIR commitment scheme rather than elliptic-curve math, requires no trusted setup, and supports custom claims written in Aztec’s Noir language plus locally stored World ID Credentials from NFC identity documents. A World Foundation spokesperson said the early shift follows NIST guidance because replacing embedded cryptography takes years even if practical quantum attacks remain five to 15 years away, and clarified that the main quantum risk for zero-knowledge systems is proof forgery rather than Harvest Now, Decrypt Later confidentiality attacks, since proofs are generated locally. Benchmarks show proofs in a few seconds on standard phones and under 30 seconds on low-end hardware, averaging roughly 1 MB; for smaller on-chain footprints such as Ethereum verification, World recommends recursive checks with systems like Groth16. World is developing ProveKit v2 to cut proof size and memory use and improve on-chain efficiency, while World ID and Ethereum pursue full post-quantum protection ahead of expected 2030s timelines.