Abstract
The rapid rise of blockchain has stirred up a lot of interest lately. It's not just about cryptocurrencies anymore; people are excited about how it could help with big global issues, like climate change. This scientific paper is like a detective story. It's diving deep into the inner workings of consensus algorithms in blockchain systems, the decision-makers of the digital world. To figure out how these algorithms affect the environment, especially their role in carbon footprint, and to see if they're actually doing a good job at helping us deal with climate change. We're focusing on the well-known ones like Proof of Work (PoW), where it's all about computational skills, Proof of Stake (PoS), which puts a spotlight on ownership, and Delegated Proof of Stake (DPoS), a system where only a few get to make the calls. And the emerging consensus mechanisms.
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