Which government-led retail payment innovation was first implemented nationwide in India, serving as a model for other countries' digital transformation efforts?

In recent years, governments worldwide have been modernizing their payment systems to improve efficiency, reduce fraud, and enhance citizen experience. This poll tests your knowledge about how public sector payment innovations are reshaping citizen-government interactions. From digital wallets for tax payments to blockchain for public procurement, the intersection of retail payment systems and government services represents a fascinating frontier of civic innovation.

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The Unified Payments Interface (UPI), allowing instant bank transfers and government service payments through a single mobile app
The GovCoin cryptocurrency, enabling citizens to earn digital tokens through civic participation that can be used for paying taxes
The CitizenPay card system, a contactless payment card that integrates all government service payments and identity verification
The Public Sector Blockchain Network (PSBN), allowing transparent tracking of all government financial transactions and procurement