Buenos Aires has become the first city worldwide to implement a digital identity system based on ZK technology, giving residents control over personal data.

Introduction of QuarkID in Buenos Aires

The Argentine government has integrated QuarkID into the miBA app, providing services and documents to over 3.6 million residents. The launch occurred on October 1, 2024, marking a significant step toward decentralized management of digital identities.

Advantages of ZK Technology

The key innovation is zero-knowledge cryptography (ZK), which allows users to verify information without disclosing additional personal details. This maintains privacy during verification, protecting personal data from third-party tracking.

Development and Prospects

The QuarkID platform is based on the ZKsync Era blockchain, ensuring security and transparency. Expansion of the system is planned to cover more documents, including driver's licenses and permits. QuarkID has also been piloted in Mexico, Colombia, and Peru, with further expansion across Argentina planned.

The implementation of QuarkID and ZK technology in Buenos Aires marks a new era of digital identity security, providing a high level of privacy and control for the residents.