Setting up Viber on a computer

 Setting up Viber on a computer We launch Viber, in Windows this can be done using a shortcut on the desktop, and in Linux Mint using “Menu->Internet->Viber” (the process of setting up Viber in Windows and Linux is no different). After starting on the first window, we answer “Yes”, since in this article we are considering the option when Viber is already on the phone, therefore we answer “Yes”. Then enter the phone number and click Continue. After that, a QR code will be displayed on the next window, and a QR code scanner will start on the phone. You read this code accordingly and that's it, Viber activation on your computer is completed. Next, click the "Open Viber" button. When you first start Viber on your computer, the program will offer to synchronize your chat history, click the "Synchronization" button, a window will open on your phone at this time in which you need to confirm the synchronization, i.e. press the "Start" button. That's ...

Main differences between PoW and PoS

 Both algorithms underlie the modern cryptocurrency market. PoS has several obvious advantages:


increases the speed of block creation;

does not require powerful equipment;

reduces energy costs;

reduces commissions.

PoW has advantages over PoS in terms of security. It completely eliminates the possibility of a Sibyl attack (when new nodes are created that impose their policy on all other network participants). PoS can only allow such an attack if the nodes have real and huge power.


PoW also completely prevents double spending. Each new block is formed only after the completion of the previous one, while it contains information about its predecessor. Unlike proof-of-stake, forks are not profitable in the PoW algorithm, since miners are only rewarded for “true” blocks. At the same time, PoS cryptocurrencies can be attacked by creating forks. Since participants in the system do not spend "genuine" funds, they can provide support to attackers. This will lead to a longer chain, which can result in fraudsters rejecting payments.


Some types of cryptocurrencies, such as Ethereum, combine PoW and PoS algorithms. At the beginning of the network existence, proof of work is applied, and after the full emission of coins, proof of stake is introduced.

PoW is more widespread and makes it possible to receive a fair reward without having the internal coins of the system in the account. At the same time, it offers large commissions, constant competition between miners, automatic increase in the difficulty of mining coins, high energy costs and spending huge amounts of money on the purchase of equipment that quickly becomes inefficient.