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How India Built UPI: The Architecture Behind 12 Billion Monthly Transactions

By Mrityunjaya Prajapati · Published March 29, 2026 · 1 min read · Source: Web3 Tag
Blockchain
How India Built UPI: The Architecture Behind 12 Billion Monthly Transactions

A technical breakdown of UPI’s protocol architecture — NPCI switch, IMPS rails, VPA resolution, and the lessons on-chain wallet infra.

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