"Blockchain technology is energy-intensive..." => No, it doesn't have to be.

Let's look at Proof-Of-Stake, an alternative to the energy-intensive Proof-Of-Work algorithm.

🧵🔽

1️⃣ A Quick Recap On Proof-Of-Work

A Proof-Of-Work algorithm requires miners to do a certain amount of work that is compute-intensive to gain access to a service or the right to do something. This algorithm, by design, also requires that the work done shall not ...
... be reusable for anything else than what it was performed for. This lies at the core of the security concept of a blockchain. To gain the right to append a new block to a chain and to get some currency as a reward, there is work to be done, and this work must be verifyable.
That work is a race between different miners. Many miners try to compete and to be the first to find the answer to a problem presented to them. This implies that a lot of energy is wasted as only the first correct solution is accepted.
You can find a more detailed thread on Proof-Of-Work here:

https://t.co/VGzmmbMisE
2️⃣ Enter Proof-Of-Stake

Proof-Of-Stake is another algorithm, designed to create distributed consensus on a blockchain while being less energy-intensive and more scalable than Proof-Of-Work.
The first mention (I know of) of Proof-Of-Stake dates back to 2011 when it was discussed on the Bitcointalk forums.

While having the same goal as Proof-Of-Work, distributed consensus, the process is completely different.
3️⃣ How It Works

A Blockchain that uses Proof-Of-Stake chooses a node to create and append the next block randomly. This process of appending a new block to the chain is usually called "forging" and not "mining".
To be eligible to be chosen, nodes must stake some of the chain's cryptocurrency. This means that a certain amount of coins is locked away and can't be accessed for as long as the node wants to act as a forger.
If a new block is to be appended to the chain, the network randomly chooses between all nodes that have staked at least the minimum amount of coins required. This draft is usually weighted which could mean that the node with the largest amount staked has the ...
... highest chance to be chosen. To compensate this, blockchains usually take other factors into account like the age of the node's stake.

Whenever a node is chosen to forge a new block, the stake's age is reset to zero to distribute forging among all nodes ...
... a little more equal.

There are many other factors that can be taken into account and they are usually as individual as the blockchain using Proof-Of-Stake. Taking a look at the specific blockchain's whitepaper usually helps you to decide whether the chain is legit ...
... and it is worth setting up a forging node for it or if it's not working in everyone else's favor.

When chosen, a forging node checks whether all transactions for the next block are valid. It then signs the block and appends it to the chain.
The stake of a forging node is always at risk. If a node harmfully tries to insert manipulated blocks into the chain and the network notices, it loses its stake and is banned from ever participating in the forging process again.
This is to ensure that all parties involved in the forging process play by the rules as there is a lot of money at risk when they commit a fraud.
A forging node that wants to exit the forging process usually needs to wait for some time until its stake is released. This time is used to recheck all the blocks it ever forged. This is the last time a potential fraud can be detected.
Only after the check completed successfully, the stake is released and can be transferred again.
4️⃣ That's It

Well, we are at the end of this thread, and I hope you now understand Proof-Of-Stake, the alternative to the energy-intensive Proof-Of-Work a little better.
If you enjoy threads like this one, drop a like, comment with you feedback, and follow me if you want more content like this. Your support is highly appreciated!
5️⃣ A Small Addition

Forging nodes are also often called validators. The process is still called forging but validators validate transactions which is where this name comes from.

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॥ॐ॥
अस्य श्री गायत्री ध्यान श्लोक:
(gAyatri dhyAna shlOka)
• This shloka to meditate personified form of वेदमाता गायत्री was given by Bhagwaan Brahma to Sage yAgnavalkya (याज्ञवल्क्य).

• 14th shloka of गायत्री कवचम् which is taken from वशिष्ठ संहिता, goes as follows..


• मुक्ता-विद्रुम-हेम-नील धवलच्छायैर्मुखस्त्रीक्षणै:।
muktA vidruma hEma nIla dhavalachhAyaiH mukhaistrlkShaNaiH.

• युक्तामिन्दुकला-निबद्धमुकुटां तत्वार्थवर्णात्मिकाम्॥
yuktAmindukalA nibaddha makutAm tatvArtha varNAtmikam.

• गायत्रीं वरदाभयाङ्कुश कशां शुभ्रं कपालं गदाम्।
gAyatrIm vardAbhayANkusha kashAm shubhram kapAlam gadAm.

• शंखं चक्रमथारविन्दयुगलं हस्तैर्वहन्ती भजै॥
shankham chakramathArvinda yugalam hastairvahantIm bhajE.

This shloka describes the form of वेदमाता गायत्री.

• It says, "She has five faces which shine with the colours of a Pearl 'मुक्ता', Coral 'विद्रुम', Gold 'हेम्', Sapphire 'नील्', & a Diamond 'धवलम्'.

• These five faces are symbolic of the five primordial elements called पञ्चमहाभूत:' which makes up the entire existence.

• These are the elements of SPACE, FIRE, WIND, EARTH & WATER.

• All these five faces shine with three eyes 'त्रिक्षणै:'.
🌿𝑻𝒉𝒆 𝒔𝒕𝒐𝒓𝒚 𝒐𝒇 𝒂 𝑺𝒕𝒂𝒓 : 𝑫𝒉𝒓𝒖𝒗𝒂 & 𝑽𝒊𝒔𝒉𝒏𝒖

Once upon a time there was a Raja named Uttānapāda born of Svayambhuva Manu,1st man on earth.He had 2 beautiful wives - Suniti & Suruchi & two sons were born of them Dhruva & Uttama respectively.
#talesofkrishna https://t.co/E85MTPkF9W


Now Suniti was the daughter of a tribal chief while Suruchi was the daughter of a rich king. Hence Suruchi was always favored the most by Raja while Suniti was ignored. But while Suniti was gentle & kind hearted by nature Suruchi was venomous inside.
#KrishnaLeela


The story is of a time when ideally the eldest son of the king becomes the heir to the throne. Hence the sinhasan of the Raja belonged to Dhruva.This is why Suruchi who was the 2nd wife nourished poison in her heart for Dhruva as she knew her son will never get the throne.


One day when Dhruva was just 5 years old he went on to sit on his father's lap. Suruchi, the jealous queen, got enraged and shoved him away from Raja as she never wanted Raja to shower Dhruva with his fatherly affection.


Dhruva protested questioning his step mother "why can't i sit on my own father's lap?" A furious Suruchi berated him saying "only God can allow him that privilege. Go ask him"