What is the difference between PoW & PoS? Advantages & Disadvantages? Which one is better in scaling Capacity? Examples?
INTRODUCTION
Today's lesson develops it's base on Concensus mechanism that ensures a central structure for each of the nodes in the Blockchain , in other words , helping them to maintain strong cyber security and trust since they all gain consensus through the process and makes the biggest chain in the process the most valid chain
Furthermore , I have to compare the distinction between the Proof of Work (PoW) and the Proof of Stake (PoS) which I will be explaining below I am 
DIFFERENCE BETWEEN PoW & PoS
The Proof of Work firstly explains the consensus mechanism that is responsible for the handling of strong mathematical works /algorithms and mining to activate the transactions and putting them on record on the the ledger and making them sub of the chain block .On the other hand ,we see Proof of Stake ,as a different kind of chain on the Blockchain that doesn't make use of the mining strength but does a lot with energy .In this one the ratio of the particular stake to the entire stake defines the block creator .
There are differences to the Proof of Work and the Proof of stake mechanisms including
The proof of work , demand a large quantity of energy with their miners utmostly required to give away their coins to settle the bills completely while the Proof of Stake allocated mining strength on the basis of the ratio of coins held by a miner
In terms of risk , we see the Proof of Work more risky , as the Proof of Stake is less risky in terms of future miners by organizing structural idemification incase of any performing malicious activities on the on the the network
We can deduce also that Proof of Work upholds larger Crypto platforms than the Proof of Stake as even Bitcoin (BTC) ,the most dominant coin in the market works with the Proof of Work
Moreso , we see that , the Proof of Stake was created as a solution to some failures of the Proof of work since the (PoW) was the initial consensus Algorithm in operation of Blockchain technology and to confirm transactions
The proof of Work initially gave an ultimatum for miners to mine but the Proof of Stake basically, gave Crypto miners, the ability to mine based on the amount held
There are also merits and demerits as to the two Concensus mechanisms as we should be discussing below ;
Firstly the Proof of Work (Proof of Work)
One of the main advantages of the PoW is that this mechanism gives it's miners , block rewards and a particular percentage of the mining fees ie there are benefits for mining on the Proof of Work
The Proof of Work also brings about a decentralized network which is the utmost basis of crypto currency activities
The Proof of work leaves the Blockchain network in a very complex way and in the same vein utmostly difficult and expensive to attack
The Disadvantages
The proof of Work makes way for extreme energy usage in other words highly increasing cost and the ecological impact which could be relatively strenous on the user
The proof of work leads to long time reliance to mining activities even as freshly minted Crypto currencies keep having a part of the crypto market
Finally , the Proof of work models demand allowance to remarkable and rising calculation power which gets a very high wastage rate whenever an equation gets solved
Now , we'll go over to the merits and demerits of the Proof of Stake too
The advantages of the Proof of Stake includes
ADVANTAGES
Like we saw in the last demerit of the PoW , they demand allowance to high calculation power and leads to energy wastage but on the other hand , the proof of stake do not require such power and they are more energy efficient
More so , the Proof of stake offer better benefits /rewards for nodes who use their Cryptocurrencies
The proof of Stake also could be termed less risky in terms of providing security for future miners so that they would well compensated incase of malicious activities on the software.
Disadvantages ;
They bring up the basis for a decentralized Network , trying to mutilate the original basis for the crypto currency system
The proof of stake is mostly down in security and could be prone to low quality attacks hereby causing damage to user investments
SCALABILITY
Finally , for me I think the Proof of Scale ((PoS ) is better in Scaling ability since the Proof of Work as understood from the lesson , limits scaling capacity .We can also see examples of it like the ;
EXAMPLES
Ethereum ; Ethereum could be seen as one of the major Cryptocurrencies that has it's base on the Proof of Stake model as it has always been a plan for the Ethereum development since they begun their phase 2 upgrade though understanding the PoS was a bit challenging and more complex than PoW as to getting to a consensus along the network . For Ethereum users , they need to stake 32 Eths to become a validator since the Validators are chosen at random and check and manage blocks that they are responsible for.
Just like we saw , in the PoS features , the Ethereum doesn't need much significant amounts of calculational power and they don't need to mine and users who claim malicious blocks ,lose their stake .Another strong example of the PoS system could be seen in the NXT coin
From their white paper ,we can see their efficient use of the Proof of Stake model constructed from pieces of open source Java .
Their blocks get generated every 1 minute on average by accounts that are opened by network nodes and regenerated by a process known as forging ie just like mining where part of transaction fees are shared with the owner when an account is successfully established .
Security is also considered in this system as , attackers are kept from generating new chains all the way from the first block and making sure that no more than 270 blocks get before the main block height
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