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Blockchain News

Buenos Aires To Issue Blockchain Based Digital ID For Citizens

Argentina’s capital will utilize zkSync Era's blockchain infrastructure to enable its 2.5 million citizens to have digital IDs.

Written By:
Gopal Solanky

Last updated: September 22, 2025 6:38 PM
Published 2023-09-29
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Buenos Aires To Issue Blockchain Based Digital ID For Citizens

The capital of Argentina, Buenos Aires, is incorporating blockchain technology in its latest public application to issue digital IDs. 

Citizens of Buenos Aires will be able to access their identity documents through QuarkID, a digital wallet that uses zkSync Era’s blockchain infrastructure. The first documents to be available include birth certificates, marriage certificates, income proofs, and academic verifications.

According to the announcement from zkSync Era, citizens in Buenos Aires will be able to download a self-sovereign QuarkID wallet to claim documents starting in October. 

¡Hola Buenos Aires! Welcome to the ZK Nation 🇦🇷

Buenos Aires is teaming up with @Quark_ID to issue digital identification services to millions of citizens in the city, with zkSync Era serving as the anchor blockchain for the program.

Learn more: https://t.co/C2ogl1qobc

TL;DR… pic.twitter.com/H2doBrotvM

— ZKsync (@zksync) September 28, 2023

zkSync Era is a layer 2 network that utilizes zero-knowledge rollups. Its highly efficient blockchain network will enable a seamless solution to upload and download documents in a secure manner.

The announcement further states that data stored in QuarkID wallets will be self-sovereign while allowing citizens to manage the delivery of their credentials when interacting with administrative services.  

Documents, including proof of income and academic verification, will be available to obtain in QuarkID wallets by November, while the government will launch further plans at the end of 2023 to enable over 2.5 million citizens to use this service.

The Secretary of Innovation of Buenos Aires, Diego Fernandez, said that “With this development, Buenos Aires becomes the first city in Latin America, and one of the first in the world, to integrate and promote this new technology and set the standard for how other countries in the region should use blockchain technology for the benefit of their people.”

Also Read: South Korea to Launch Blockchain-Based Digital IDs By 2024

Disclaimer: The information researched and reported by The Crypto Times is for informational purposes only and is not a substitute for professional financial advice. Investing in crypto assets involves significant risk due to market volatility. Always Do Your Own Research (DYOR) and consult with a qualified Financial Advisor before making any investment decisions.

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Gopal Solanky, Senior Reporter for Markets and Protocols at The Crypto Times
By Gopal Solanky Sr. Crypto Journalist
Follow:
Gopal Solanky is a Senior Reporter, Markets & Protocols at The Crypto Times, based in Ahmedabad. He covers institutional crypto adoption, Bitcoin treasury strategies, DeFi markets, protocol ecosystems, Ethereum network activity, Hyperliquid, on-chain trends, and broader digital asset market movements. Gopal has been active in the crypto ecosystem for more than six years. Before joining The Crypto Times full-time in 2023, he worked as a freelance crypto content writer, developing a strong understanding of blockchain infrastructure, DeFi protocols, market cycles, token mechanics, and peer-to-peer systems. His reporting focuses on explaining how protocols work, why market movements happen, and how institutional and on-chain activity affects crypto investors and builders. At The Crypto Times, Gopal regularly writes market analysis, protocol explainers, breaking news, and technical breakdowns across Bitcoin, Ethereum, DeFi, altcoins, treasury companies, and Web3 infrastructure. He also hosts on-the-record interviews with regional Web3 founders, protocol teams, and ecosystem leaders. His work has been cited by external publications, including Vulture.com, in coverage of major crypto stories such as the Hawk Tuah memecoin controversy. His reporting has also contributed to The Crypto Times’ coverage of major industry events, including FTX-related developments, institutional crypto adoption, and emerging protocol narratives. Gopal holds a Bachelor’s degree in Computer Applications, giving him a technical foundation for analyzing blockchain systems, crypto infrastructure, and market data.

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