The capital of Argentina, Buenos Aires, has announced the implementation of blockchain technology and zero-knowledge cryptography for the issuance of digital identities. According to local media reports, the government disclosed on Oct. 21 that it has integrated the decentralized identity solution QuarkID into its miBA digital platform — the city’s platform for accessing government services and documents. Since Oct. 1, more than 3.6 million active users of miBA have received decentralized digital identities (DIDs) secured by QuarkID — a digital identity protocol built by Web3 firm Extrimian. T…