Public ledgers like Ethereum excel at trustless verification, but they expose every transaction, wallet, and interaction to the world. For many individuals sending payments, businesses guarding trade secrets, and institutions handling sensitive data, this exposure is a dealbreaker.
The service, QuarkID, has been integrated into miBA, the city's seven-year-old app for accessing municipal services and documents. The idea, in short, is to give 3.6 million porteños - residents of Buenos Aires - greater control over their personal information. The ZK proofs will let users show that a document has indeed been authenticated by the government without disclosing information that is irrelevant to the task at hand.
Rollups have emerged as a prominent method for scaling Bitcoin, aiming to overcome Lightning Network's liquidity limitations by enabling off-chain transactions without prior fund allocations.