^{Official Contest Cover}

Hello, this is Mahnoor form Pakistan and this is second time that am going to participate in steem for bloggers contest. Before start writing on it i hope my all readers and members of this community will be fine and happy. Today am going to participate in bloggers crypto contest in which i have to discuss about the blockchain and it's work. So, let's start,

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What is a blockchain and how does it work?

Before starting I want to clear that I don't have much information about blockchain works but i will tried my best to write good explanation for you, My dear friends blockchain technology is pretty complex! It is a decentralized and a digital ledger that records the transactions securely and transparently. It is like a digital book where many people write notes together.

^Pixabay

Now i will talk about it's work in this way, let Imagine a big platform where many people have a copy of that. When someone wants to add a new transactions, they tell everyone in the group at blockchain.And then all blocks checks to ensure the transaction is correct and agrees to add it to the blockchain. And our transaction is saved in blockchain with a code.

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What is a consensus mechanism and why is it important in a blockchain?

A consensus mechanism is a manner for computer systems in a blockchain community to agree at the kingdom of the blockchain. It's like a vote casting device that guarantees anyone is of the same opinion at the "truth" of the blockchain.

^Pixabay

In blockchain, which means all of the computer systems (nodes) agree at the transactions, blocks, and the order of things. It prevents someone node from dishonest or manipulating the blockchain.

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Explain the difference between proof-of-work and proof-of-stake consensus mechanisms.

Here are the different btw proof-of-work (PoW) and proof-of-stake (PoS) consensus mechanisms.

Proof of Work (PoW):

• Uses mining to attain goals
• Miners paintings to clear up for the hash, a cryptographic variety, to affirm transactions
• Requires hefty computational power
• Energy-extensive
• Miners are rewarded with a coin

Proof of Stake (PoS):

• Uses staking to attain goals
• Validators are selected primarily based totally at the variety of staked cash they have
• Requires minimum computational power
• Energy-green
• Validators get hold of transaction costs as rewards

Now i am going to invite my friends for participating in this challenge, @ahsanshrif , @steemdoctor1, @faran-nabeel and @malikusman1 for participating in this challenge.

Regards,
Sitaraindaryas