π Why we require Proof-of-Stake consensus mechanism if we have Proof-of-Work?
If you have read my last tweet, you should have at least 1 answerπ
- Negative impact on the environment π
- Expensive to be a miner π΅
- Scalability : Less transactions processed per secondβ±
π What is Proof-of-Stake?
- It does not have miners but instead validators
- Only who put their crypto on stake become validators
- There is no competition but a validator is picked in a pseudo-random way, who propose to add next block
- Other validators "attest" or checking it to be true
- Both type of validators are rewarded basis their stake
- If wrong block is proposed or attested, staked coins are slashed. Meaning loosing a portion of coins staked
π What are the factors affecting validator selection?
- How long a validator has been staking
- Randomisation
- And, highly on amount staked. Higher amount staked, higher chances of getting selected
π Does it mean that whoever stakes more will most of the time gets selected? Leading to centralisation?
Can you think or find answer to that? π§
If you can't find the answer, let me know in the comments. I'll answer to that π»
π What is the benefit of it?
- Incentivised mechanism - More participation for becoming validators
- Fear of loosing the crypto staked indirectly forces the validators to act in the networkβs best interests
- Increased scalability
- Don't require bigger machinery
π Are there any cons of Proof-of-Stake?
- It's relatively less tried and tested than Proof-of-Work
- Person need to have a minimum number of crypto coin to become a validator
Congratulations!π₯³ Now you know about the two major consensus mechanisms.
What will the next thread be on? It'll be on "What is web3?"π
Thank You for reading! If you liked this thread, follow me @GargEtisha and retweet this tweet so that it can reach to maximum people. Thank you
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- World Wide Web commonly known as Web is something built on top of Internet.
- Collection of documents that can be requested by a browser from a server
- Each document can accessed by a web address
π Why is it suffixed with 3? Are there any 1 and 2 as well?
Yes there areβ
Web1
- Static web pages
- Read-only : Not Interactive
- More consumers less creators
Web2
- Interactive and social web
- Read/write
- Gave birth to more creators
- Largely handled by big tech firms
π What is consensus?
Let's understand it with an example :
If your family is planning to buy a car and if more than half of the persons in the family agree upon a certain model of the car, then we say we have reached a consensus or in simple terms agreement upon something.
π What is blockchain consensus mechanism?
Since blockchain is a public distributed ledger and an agreement is required from every node in the network to make any addition to the blockchain, it is nothing but a certain procedure to reach an agreement upon current state of network
πWhy was this technology even introduced?
- To remove power from central authority
- To prevent frauds
- To have more transparency
- To have immutable records
π When and how did it all start?
This technology was introduced back in 2008 by an anonymous person(or group) called as "Satoshi Nakamoto"