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2023-04-18clock6 minutes

Cryptocurrencies have revolutionized the way we perceive and use money. Blockchain technology, the backbone of cryptocurrencies, has brought in a new era of transparency, security, and decentralization. The two most popular consensus algorithms used by cryptocurrencies are Proof of Work (PoW) and Proof of Stake (PoS). In this article, we will dive into the differences between PoW and PoS, their similarities, and examples of famous cryptocurrencies that use them.

What is Proof of Work?

PoW is a consensus algorithm used by cryptocurrencies to validate transactions. It requires users to solve complex mathematical problems to validate a block of transactions. These problems are called cryptographic puzzles, and once solved, the block is added to the blockchain. The first person to solve the puzzle is rewarded with cryptocurrency.

  • For example, in Bitcoin, the first person to solve the puzzle receives 6.25 BTC.

However, it is possible that not one, but several, or even hundreds of users solve the transaction together, in which case 6.25 BTC is distributed according to their contribution.

It is also important to know that the amount of Bitcoin received as a result of validation is halved every four years. This process is called halving. The next halving will take place in 2024, when the gift of validators will not be 6.25 bitcoins but half of it, i.e. 3.125 BTC.

What is Proof of Stake?

PoS is another consensus algorithm used by cryptocurrencies. In this algorithm, users stake a certain amount of cryptocurrency to become validators. Validators are selected randomly to validate the transactions. The more cryptocurrency a user stakes, the higher the chances of being selected as a validator. Validators are rewarded with transaction fees instead of new cryptocurrencies.

For example, imagine that you have a house. You can rent your house to another person, and in return he gives you a certain amount of money. The more houses you rent out, the more you get paid from the people you rented it out.

Now imagine that many people want to rent out their home. Instead of them starting to look for specific people who want to rent a house, they go to a special company, on a crypto language - validator, who will find tenants for them. The validator, i.e. the company, keeps data on who is the real owner of the house and who is the renter, so they know who should receive what payment.

Simply put, validators earn additional benefits and passive crypto income by investing their crypto assets.

If you decide that the PoS algorithm looks attractive to you and you have crypto assets that you would like to put into Crypto Savings, Cryptal can help you with that. For more information, you can read our blog:

What are the Similarities?

PoW and PoS both aim to achieve consensus in the blockchain network. Both algorithms require users to validate transactions, and both have a reward system for validators.

What are the differences?

One of the significant differences between PoW and PoS is the energy consumption. PoW requires massive amounts of computational power, which leads to high energy consumption. On the other hand, PoS is less energy-intensive and requires less computational power. Another difference is the security. PoW is more secure as it is more decentralized, while PoS is less secure as it is more centralized.


In conclusion, PoW and PoS are two popular consensus algorithms used by cryptocurrencies to achieve consensus in their network. While both algorithms have similarities in their objective and reward system, they differ in energy consumption and security. As the cryptocurrency market evolves, we may see more advanced consensus algorithms emerge to address the issues of energy consumption and security.