Proof-of-Stake (vs. Proof-of-work)

Cryptocurrencies like Bitcoin and Ethereum uses enormous amounts of energy. That's because of the proof-of-work algorithm. In this video I'll explain how the proof-of-stake algorithm works. An alternative consensus algorithm that uses a lot less energy!


Hern, A. (2018). Bitcoin’s energy usage is huge – we can't afford to ignore it. The Guardian. Retrieved from

Proof-of-stake. Wikipedia. Retrieved from

Back, A., & others. (2002). Hashcash-a denial of service counter-measure. Retrieved from

Jakobsson, M., & Juels, A. (1999). Proofs of Work and Bread Pudding Protocols. In Proceedings of the IFIP TC6/TC11 Joint Working Conference on Secure Information Networks: Communications and Multimedia Security (pp. 258–272). Deventer, The Netherlands, The Netherlands: Kluwer, B.V. Retrieved from

Proof of Stake. Retrieved from

QuantumMechanic. (2011). Proof of stake instead of proof of work. Retrieved from

The Inevitable Failure of Proof-of-Stake Blockchains and Why a New Algorithm is Needed (Op-Ed). (2015). Retrieved from

Proof of Stake FAQ. Retrieved from

Will a higher stake make more money in PoS? (2017). Retrieved from

Hertig, A. (2017). Where's Casper? Inside Ethereum's Race to Reinvent its Blockchain. Retrieved from

Cryptocurrency Mining Farm. (2014). Retrieved from

Economies of scale. (2017). Retrieved from