Buenos Aires has introduced a new digital identity system that prioritizes privacy using zero-knowledge technology.
The Argentinian government has integrated QuarkID, a blockchain-based identity solution, into its miBA app, which offers services and documents to over 3.6 million residents. This initiative, launched on October 1, 2024, marks Buenos Aires as the first city in the world to adopt zero-knowledge (ZK) technology for managing decentralized digital identities.
QuarkID: Empowering Residents with Data Control
Introducing QuarkID gives residents greater control over their personal data. The system allows them to manage documents like birth certificates and tax records through their mobile devices, enhancing both convenience and security.
Understanding Zero-Knowledge Technology
The key innovation here is zero-knowledge cryptography, which enables users to verify information without revealing unnecessary personal details. Zero-knowledge technology ensures privacy by allowing only relevant data to be shared during verification processes. This means personal data is protected from exposure during interactions, and no third party β including the government β can track how or when these credentials are used.
Zero-knowledge technology ensures privacy by allowing only relevant data to be shared during verification processes.
This differs from traditional systems, where institutions often manage and store usersβ data.
Enhanced Security with ZKsync Era Blockchain
The blockchain framework for QuarkID is built on the ZKsync Era blockchain, providing enhanced security and transparency. Since personal credentials are stored on a decentralized system, risks like data breaches and identity theft are significantly reduced.
Future Expansion Plans
Buenos Aires plans to expand the system to cover more documents, such as driverβs licenses and public permits. QuarkID has also been piloted in Mexico, Colombia, and Peru, with further expansion planned across Argentina.
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