technology medium Fill in the Blank

The consensus mechanism used by Bitcoin where miners solve cryptographic puzzles is called Proof of ________.

  1. Work
  2. Serverless
  3. Principle, Privilege
  4. CARTOSAT / EOS

Answer: Work

Proof of Work (PoW) requires miners to expend computational power to solve hash puzzles, securing the network and preventing double-spending. Energy-intensive; alternatives include Proof of Stake (PoW's successor in Ethereum), Proof of Authority, and Byzantine Fault Tolerance variants. Critical for understanding blockchain security and sustainability.

Topic Blockchain
Exam Relevance Banking, UPSC, SSC
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