Which consensus algorithm does Bitcoin use?
a) Proof of Stake (PoS)
b) Delegated Proof of Stake (DPoS)
c) Proof of Work (PoW)
d) Byzantine Fault Tolerance (BFT)
Answer:
c) Proof of Work (PoW)
Explanation:
Bitcoin uses Proof of Work (PoW) as its consensus algorithm, which requires miners to solve complex computational puzzles to validate transactions.