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Proof-of-Work vs. Proof-of-Stake: What Is the Difference?

Proof-of-work (PoW) and proof-of-stake (PoS) are two different methods to validate cryptocurrency transactions.

Proof-of-work vs. proof-of-stake (Brett Sayles/Pexels)
Proof-of-work vs. proof-of-stake (Brett Sayles/Pexels)