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On Ethereum using less: this is due to a different consensus mechanism involved, one that is more eco-friendly, but less distributed and inherently (mathematically) less secure.

Generally, it should be fine on the scale of Ethereum, but Bitcoin has it safer, at the cost of plenty of power and e-waste.

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Knock_Knock_Lemmy_In@lemmy.world ⁨2⁩ ⁨days⁩ ago

more eco-friendly, True

but less distributed False. 888k Ethereum validators. 80k Bitcoin Nodes

inherently (mathematically) less secure. Not sure what angle this is coming from, but about 10k validators are needed to secure Ethereum. In BTC all it takes is for Antpool and Foundry to team up and you are above the 51% threshold.

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- Allero@lemmy.today ⁨1⁩ ⁨day⁩ ago
  That same 51% attack can occur on Proof-of-Stake, except you could immediately rewrite anything and also rob legitimate nodes of their stake, for all I understand.
  
  Momentary 51% of Proof-of-Work merely makes it possible to extremely slowly rewrite the neighboring blocks. As most Bitcoin transactions require many “confirmations” (blocks coming after the one with the transaction), the attack realistically needs a very big scale, rely on serious level of luck and, through the open ledger, it will be extremely easy to detect.
  
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  - Knock_Knock_Lemmy_In@lemmy.world ⁨1⁩ ⁨day⁩ ago
    You can’t really rewrite old blocks with PoS, and your attack gets weaker over time as your invalid blocks are proven to be false.
    
    vitalik.eth.limo/general/2020/11/06/pos2020.html
    
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    Allero@lemmy.today ⁨1⁩ ⁨day⁩ ago
    Curious. Will take a closer look, thanks.
    
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