What Role Does Proof-of-Stake Play In The Blockchain Ecosystem?

The Proof-of-Stake (PoS) consensus mechanism has emerged as the most plausible answer to the energy challenge that Bitcoin and Ethereum face. The world’s two most popular blockchains have long been chastised for their massive energy consumption, with one recent analysis by MoneySuperMarket in the United Kingdom predicting that each Bitcoin transaction costs more than $100 in energy expenditures.

Sunny King and Scott Nadal first described the Proof-of-Stake (PoS) consensus in a 2012 study, recognising that Bitcoin’s Proof-of-Work (PoW) consensus will one day be a problem.

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