Proof of Work (PoW) and Proof of Stake (PoS) Explained

Proof of Work (PoW) and Proof of Stake (PoS) Explained

 In this article, you will learn about two main concepts in the blockchain world. Proof of work and proof of stake.

What is proof of work in Bitcoin World?

In the Bitcoin world, the transaction that happens is not dependent on any third-party operator. For example, when you make a transaction using your original currency through visa or master card, they act as a third-party who transfers your amount to another account. But in case of Bitcoin world, the transactions are managed by various blocks which form the blockchain technology. So to make the block function properly and record every transaction, bitcoin miners need to solve some complicated set of puzzles or algorithms and create a block. To solve this mathematical puzzle, it requires a massive amount of computing power. When any miner solves the puzzle, he/she creates a block and then, the miner will send the new block to the network for other miners to verify it.

The question must be arising in your mind as for how they are awarded for creating those blocks? The answer is these algorithms are solved to make your transactions in this virtual world secure. Since Bitcoin is a decentralized currency, it is not controlled or governed by any central body. So, how to track any transaction happening with this currency? This is precisely what miners do. They solve the puzzles, create various blocks and maintain the BlockChain which guards every transaction and keeps the system secure. This procedure is called as proof of work or POW. You do some work for which you are paid.

What is proof of stake in Ethereum and related protocol?

As Ethereum is widely known as another decentralized cryptocurrency, this virtual currency network used to operate using the POW but now it doesn’t use the Proof of Work system to validate any transaction happening on their network. This system first determines how much currency a person holds. Based on that a person is assigned to mine only the percent of the cryptocurrency he/she holds. For example, if you own 1% of the cryptocurrency that is available then you are entitled to mine 1% of the blocks. This method is more secure as compared to POW system as it is more secure from the 51% attack by fraudulent miners.

The POW system uses normal electricity for its transaction. This means when a miner uses its power to solve block puzzles and solves it, he/she validates a transaction. This, in turn, gives him the award regarding Bitcoins. But in PoS system it doesn’t depend on the electric power to generate cryptocurrency for you. Only if you hold a certain amount of cryptocurrency you are allowed to mine and that too limited. So basically, it is least dependant on the electric power supply. 

Proof of Work (POW) Vs Proof of Stake (POS) 

So comparing both the systems lets discuss their advantages and disadvantages.

Advantages of Proof of Work

  • The POW give rise to a series of miners who work for the stability of blockchain and make the network and transaction very secure.
  • You don’t need to have some asset beforehand to start your mining

Disadvantage of Proof of Work

  • The system of POW makes it easier for miners to make their 51% attack. This means that a miner or a group takes over 51% or more than that of the hash rate (computational power). This gives them the power to manipulate and create fake blocks redirecting some transactions towards their account. They can stop transactions, reverse transactions or even create disturbances in the whole system, but they certainly can’t create a new Bitcoin. Total 21 million Bitcoins can be mined and owning 51% of the computational power doesn’t make you the creator.
  • Although this kind of attack is considered as hypothetical but should not be ignored. If you take present scenario into account, the mining of Bitcoins are more time consuming, getting more difficult and consuming a lot of electricity and the amount they are getting for the mining are too less. This makes it less profitable. Hence, lots of miners are opting out of mining and solving the codes which is slowly making the system less secure and more susceptible to attackers.

Advantages of Proof of Stake

  • The basic advantage of proof of stake is that it is more secure as compared to POW system. Both the POW and PoS uses trustless and distributed consensus. This means, if you wish to go ahead with a transaction, then you won’t need the help of third-party system to monitor and leverage your transaction. Distributed means the whole community who believe in the existence of the cryptocurrency and oversee the transaction and what’s more? They validate each transaction and every person holds a copy of each transaction that is going on.
  • The miners are determined concerning the amount of currency they hold.
  • They get the transaction fees as the result of their mining
  • More secure against 51% attack

Disadvantage of Proof of Stake

  • The PoS doesn’t have any solid disadvantage except that you need to hold some asset before becoming a miner or a forger. This removes many people who wish to start mining from scratch.
  • It doesn’t reward you for block creation. You only receive the transaction fees but no separate reward for making the system secure.
Proof of Work Proof of Stake
Uses computational power to solve algorithm Doesn’t require computational power to solve algorithm
Easier for attackers to conduct 51% attack More secure as the attacker need to buy 51% of the total currency before they can attack
Rewards are given for solving each puzzle to valid a transaction (the one who solves it first gets the reward) The forgers can keep the transaction fees for validating each transaction
Anyone with necessary hardware can start mining with the Proof of Work consensus A team determines whether you qualify as a forger or not based on your current asset


So basically, none of the systems is 100% free from virtual attacks. But since most of the cryptocurrencies use blockchain technology, it is important for the community who believe in them to work together to make the system and the transactions secure on this platform. No matter how these protocols function, the final objective of every cryptocurrency is same, i.e., to create a secure dimension in which a singular decentralized currency will drive all the transactions.

Going All Digital With Ethereum? Here Are The Top Five Best Ethereum Wallets

Best Ethereum Wallets

Ethereum has emerged as a tough contender in the world of cryptocurrencies, threatening the position of Bitcoin as the number one. There are speculations that Ethereum may even successfully replace Bitcoin from its position and enjoy the number one spot for quite some time. This strong trust that many cryptocurrency enthusiasts and investors have laid on Ethereum is the main driving force, the propellant that is making it a force to reckon with.

However, with a growing trend of buying Ethereum based coins, investors should also ensure that they are going for the most trustworthy and best Ethereum wallets. This would ensure them a safe, secure and powerfully encrypted Ethereum trading tool, which will effectively keep out malware and hackers reaching their Ethereum deposits.

Best Ethereum Wallets

We have brought you a list of top five, the best Ethereum wallets and hopefully even for the next year that will provide you with all the security and transactional features.

You Might Like: Best BitCoin Wallets

Let us take a look at who they are and what features they provide you.

For The Beginner, For The Simple User: Ethereum Wallet By Coinbase:

Go To: Coinbase Wallet

If you are a beginner to the cryptocurrency world and do not want to face complexities in setting up your Ethereum wallet, this is the best option that you can go for. It is effortless to set up, along with its security settings.

However, it comes with some issues. First, the company Coinbase holds your private key, which means that you are not in the control of your Ethereum account. So they may shut your account down for any possible reason. And this has happened to some before.

Also, it does not support Ethereum Classic. There you go another inconvenience if you are an Ethereum Classic currency holder.

For The Security Obsessed: Hardware Wallets:

Yes, we realize that this is not one single brand and a category. But the whole category is so peculiar that it deserves to be explained as one. If you are extremely particular about the security of your Ethereum account and cannot trust software based sources for security, you better go for a hardware wallet. The best Ethereum wallets in hardware are:

  1. Ledger
  3. KeepKey

The tradeoff here are the prices. These hardware wallets cost anywhere from $50 to $100, not including the shipping charges. So if you are ready to shell this much moolah, go ahead! Also, if you lose them, times are going to be hard.

For Those Who Already Coinbase: Jaxx Ethereum Wallet:

Go To: Jaxx Wallet

Why the title, you may ask. The reason is quite evident that the features provided by Jaxx are the exact opposite of those provided by Coinbase, except for its simple interface. This wallet supports Bitcoins as well as Altcoins, which is in itself a big deal. On the other hand, its user interface is quite easy to use, even for cryptocurrency noobs.

However, the most significant uptick that Jaxx gets is that it supports both Ethereum as well as Ethereum Classic, which makes it an attractive contender on this list despite being new here. Also, the company does not control your private key, unlike Coinbase.

Find A Middle Ground On Desktop – Welcome Exodus Wallet:

Go To: Exodus Wallet

But middle ground from what? Between Coinbase and Jaxx. But before discussing that, let us talk about its core value. Exodus is one of the most trustworthy and highly secure desktop based Ethereum wallet available today. Its simple interactivity, coupled with security helps it get a place on the list.

However, unlike Jaxx, it does not support Ethereum Classic, it supports only Ethereum on your desktop. And unlike Coinbase, it does not store your private with itself, but rather on your machine.

One downside to Exodus Wallet is that it is not open source.

Ethereum On The Web – MyEtherWallet:

Go To: MyEtherWallet

This Ethereum wallet allows the user to manage their Ethereum account online, without having to hand over your private keys to it. So despite being an online service, it still lets you keep your private keys.

When you initially create an account, it asks you the currency of your choice. When you create an account, it will generate public and private keys that will be password protected, password of your choice. The website will also send you a file along with the public-private key for future use.

Therefore, whenever you are storing Ethereum on your online wallet, you will have to upload this file.

Concluding Words

Buying an Ethereum wallet is not much of a head-scratching task at all. If you know what you need and especially what platforms you are fine with to store your Ethereum, you can easily choose your wallet, of course after considering the trade-offs.