Science & Technology·Prelims Strategy

Blockchain Technology — Prelims Strategy

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Version 1Updated 10 Mar 2026

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Prelims Strategy

For Prelims, focus on factual accuracy and conceptual clarity. Master the core definitions: what is a block, a node, cryptographic hashing, DLT, and smart contracts. Understand the basic differences between various consensus mechanisms (PoW, PoS) and types of blockchains (public, private, consortium).

Pay close attention to the applications of blockchain, especially those relevant to India, such as land records, supply chain management, and digital identity. Memorize key government initiatives like the NITI Aayog's National Blockchain Strategy and the RBI's e-Rupee pilots.

Be aware of the regulatory stance on cryptocurrencies, including the Supreme Court's judgment and the taxation framework. Questions often test the 'what' and 'how' of blockchain, its benefits, and its challenges.

Practice MCQs that differentiate between similar concepts and identify correct applications. Keep an eye on recent current affairs related to blockchain adoption and regulation, as these are frequently tested.