Buenos Aires has implemented a blockchain-based digital identity system for its 3.6 million residents, utilizing the QuarkID decentralized identity protocol integrated into the miBA digital platform. Launched on October 1, the digital IDs are powered by ZKsync Era, an Ethereum scaling protocol using zero-knowledge rollups. This initiative aims to enhance data privacy and security for citizens by allowing them greater control over their personal information. The city previously announced plans to digitize official documents such as birth and marriage certificates. Diego Fernández, secretary of innovation and digital transformation, emphasized the potential of blockchain to reshape government services by enabling secure personal data ownership. Additionally, Buenos Aires has taken steps to integrate Ethereum into its education system, offering classes in Solidity for students.

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