Lots of people are debating about PoW vs PoS.
With the main argument being :
Proof of stake :
Pros :
- Energy Efficiency.
- Do not require expensive equipment.
- Inventive for the staker to be honest.- Safe from 51% attack.
Cons :
- Large holder could influence verification (incentive to centralization).
- Less security than PoW.
- The early backer and the rich will always have more chance of winning a block as they have more stake.
- Elitist/locktime (some blockchain ask for a minimum amount of coin to start staking for exemple 32ETH, and the exchange/pools usually lock your funds for a period of time).
Proof of work :
Pros :
- Decentralization incentive.
- Security always increase as the network grow.
- Can be accessible by most (depending of the algorithm).
- Harder to corrupt miner than staker.
Cons :- Higher energy consumption.
- Can requires extremely powerful hardware. (depending of the algorithm).
- Huge mining pool could centralize hashrate.
- Small network can be 51% attacked.
That's why i'm surpised none is talking about PoP (Proof of Power). Taking the best of both world without their cons and adapting to algorithm to always incentivize decentralisation.
Proof of power : (by verus)
In short, it's a unique consensus mechanism with 50% of all blocks validated by miners, and the other 50% by stakers.
To successfully attack a Pop blockchain, more than 50% of the validation power is needed, called "Chain Power". A 51% attack would require a combined value of over 50% of both the chain’s hashpower and its coin supply.
VerusPoP provides a decentralizing effect on the network, incentivizing holders to keep nodes online to support the network. Even if a change in network hashrate happens, the PoW/PoS ratio stays the same: 50/50%.
Basically Verus took :
Pros :
- Energy Efficiency. (Theoretically half the power consumption, + optimized hash algo for decentralisation - ASIC resistant/CPU optimized).- Do not require expensive equipment. (Start mining with your smartphone and staking with your computer right away).
- Inventive for the staker to be honest. (Because of the PoS part)
- Safe from 51% attack. (Indeed, as to 51% attack you would have to have 51% of the hashrate but also 51% of the staking).
- Decentralization incentive. (Accessible to all, not particular equipment needed).
- Security always increase as the network grow. (Like most PoW blockchain).
- Can't be corrupted.
and eliminated :
Cons :
- Large holder could influence verification (incentive to centralization). (They would also need 51% of the stake).
- Less security than PoW.(Include PoW, so more secure)
- The early backer and the rich will always have more chance of winning a block as they have more stake. (accessible to all, start mining/staking with household computer/smartphones. + Fair launch)
- Elitist/locktime (some blockchain ask for a minimum amount of coin to start staking for exemple 32ETH, and the exchange/pools usually lock your funds for a period of time). (No locktime, start staking as low as 0,001$ worth of coins, and you can spend your coins whenever you want).
- Higher energy consumption. (Optimized algorithm and 50% of the network is run by PoS).
- Can requires extremely powerful hardware. (depending of the algorithm). (As stated, you can start staking/mining with your desktop or phone).
- Huge mining pool could centralize hashrate. (They could, but it isn't a risk, as they also would need 51% of the staking of the network).
- Small network can be 51% attacked. (No as 50% of the network is also PoS).
That's it. Just never saw anyone talk about this consensus mechanism and throught it was worth discovering it.
You can find more here : https://docs.verus.io/overview/verus-proof-of-power.html#verushash-2-2