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The Hybrid-Proof-of-Stake (HPoS) consensus mechanism is gebruikt zowel elementen uit het Proof-of-Work (PoW)- als Proof-of-Stake (PoS) consensus mechanisme.
Typically, the HPoS mechanism relies on:
The selected PoS validators are also engaged in checkpointing, which is a mechanism that improves the security of a blockchain. By permanently preventing blocks older than a specific set value from being reorganized, the blockchain is harder to temper with and thus more secure.
One of the advantages of HPoS is that it significantly reduces the chance for miners to achieve a hash-power monopoly. This is because PoS validators validate the new mined blocks and vote on any changes to the network’s consensus roles.
Another advantage of HPoS blockchains is, compared to PoS blockchains, that they are less vulnerable to long-range attacks because their block production is still gated by computational power, which is used in pure PoW systems.
Although the PoW and PoS consensus mechanisms complement each other’s weaknesses, a major downside of HPoS blockchains is that they still require miners in order to create new blocks. This brings several issues such as electricity consumption, hardware costs and environmental impact.
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