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Opening up 'Zero-Knowledge Proof' technology to promote privacy in age assurance

Hacker News · Jul 1, 2026, 10:27 PM

Key takeaways

  • Open sourcing these powerful cryptographic tools will make it much easier for private and public sector developers to build their own privacy-enhancing applications and digital ID solutions, meeting an urgent need.
  • In layperson’s terms, ZKP makes it possible for people to prove that something about them is true without exchanging any other data.
  • The goal of sharing ZKP with the open source and cryptography communities reflects our commitment to helping all parties in the ecosystem:

Alan Stapelberg Group Product Manager, Google Wallet Share x.com Facebook Linked In Mail Copy link Today, we open sourced our Zero-Knowledge Proof (ZKP) libraries, fulfilling a promise and building on our partnership with Sparkasse to support EU age assurance.

Open sourcing these powerful cryptographic tools will make it much easier for private and public sector developers to build their own privacy-enhancing applications and digital ID solutions, meeting an urgent need.

In layperson’s terms, ZKP makes it possible for people to prove that something about them is true without exchanging any other data. So, for example, a person visiting a website can verifiably prove he or she is over 18, without sharing anything else at all.

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