Hello how are you all friends I hope you are all well.By the grace of Allah, they will be fine. I am fine Thank God. Today, by the command of Allah, I am going to do the Steetmit Crypto Academy Beginner Course Task 4.I hope I can do it well.

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What is the difference between PoW and PoS? Advantages and disadvantages? Scaling Which is better in capacity? Examples?

As you know Proof of work is a decentralized consensus method. Which is used to verify and add new blocks in the blockchain. Proof of work requires a lot of energy to verify the transaction. Miners compete with each other on blockchain proofs, using many computing efforts to solve hashes. Who are the first to solve the hash. Which requires extremely fast computing machines. In order to verify the block.

As in 2004, High Finney used work evidence to protect digital money through reusable work evidence. This was done using the SHA-256 hashing algorithm.Satoshi Nakamoto applied the artistic idea to the creation of the bitcoin. Which is used to verify blocks. Examples of blockchain are Litecoin, Bitcoin, Ethereum, Monero, etc.

Benefits of proof of work.

• It's safe. This is because a blockchain-proof attacker would need to be able to damage the network in order to gain 51% of the computing power used by all the connected nodes in the blockchain. Which is very difficult and expensive.

• Work Blockchain proof miners are rewarded for verifying and adding new blocks to the blockchain. This is a reward for the energy and cost used to verify blocks called block rewards. An example is in the bitcoin blockchain. Where miners are rewarded 6.25BTC for block mining.

• Any connected node can voluntarily enter mine blocks as proof of work blockchain network. Because no permission is required to participate in block mining.

Disadvantages of proof of work

• Proof of the work-alignment method requires a lot of energy and high computing machines to solve the hash used in block verification. This energy is used. Machines spend a lot on electricity bills and machine costs.

• Excessive energy can lead to environmental damage by using evidence of work consensus methods. Which is bad for the ecosystem.

• Verification of work-based transactions is slow. This creates scalability issues. Because it can't handle transactions fast enough to meet growing demands.

Proof of stake

Proof of stack is a consensus algorithm concept.Which allows miners to verify transactions and mine blocks. On the basis of which they have coins and stakes. Proof of the stock blockchain is the amount of coins a miner has. Its mining power is just as high. The work is designed as an alternative to algorithm proofing.Examples of blockchains using proof of stake, coincidence, algorithm are DASH, NEO, LISK, Peercoin, etc.

The benefits of steak proof

• It requires less energy to verify and add blocks in a blockchain than evidence of a work consensus method. It is a green option for the environment rather than proof of work.

• It does not require heavy computing machines to verify the block. Similarly, unlike proof of work, electricity bills do not cost much. Proof of work leads to more transactions in the same period. When compared with work evidence.

• The attacker must have 51% of the total cryptocurrency on the blockchain in order to attack proof of stake. It's not just difficult. It will also cost a lot more. Doing so would be to the detriment of the attackers.

Disadvantages of stake proof

• Miners have to put in more coins to get a chance to verify the block in proof of stake. This means that the higher the number of coins, the better. Your mining power will be just as great. This gives great benefits to the rich.

• Stacked coins cannot be spent until then. Until the stacking period is over. The reward for verifying a block is much less than proof of work.

What is the difference between PoW and PoS?

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Proof of work

• Minerals compete to solve a complex mathematical code. Used to verify transactions. New blocks are added to the blockchain using heavy computational machines.

• Proof of work requires a lot of energy when verifying transactions and adding blocks. Proof of the work is the creation of new coins as a reward to miners.

• The hacker needs to have 51% of the connecting nodes computing energy to make the attack successful, as evidenced by the blockchain of work, which is good.

Proof Of Stake

• Network participants gamble their coins to confirm a transaction or block. The greater your share. Your mining power will be just as great. Which will benefit you.

• Evidence of a stake does not require much energy or power when confirming a transaction with someone. No new coins have been created to prove the stakes. Because all the coins are already made. Advertising miners are rewarded for confirming the transaction through a transaction fee.

• The hacker must have 51% of the blockchain currency in order for the attack to succeed, according to Blockchain.

Which is better in scaling capacity

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Here I tell you that the stakes are better in terms of scaling capacity. That's because it can handle more transactions than proof of work at the same time. Due to the complex solution involved in verifying the transaction in the proof of work, it takes about 10 minutes to reduce this block when it confirms fewer transactions as compared to the proof of stake which confirms the transaction.Takes less time.

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Result

The bottom line is that proof of work and consensus at stake are the two most commonly used consensus methods. Which verifies taking and giving different blockchains and uses them to add blocks. Although used for the same purpose. But when they work, they are different in many ways. High computational machines are needed to allow POW to mine a block. POS requires a large share of blockchain cryptocurrency to verify transactions. I am very happy to have completed this task. thanks so much.
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@ansardillewali