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 ...

The history of the emergence of the PoW algorithm

The history of the emergence of the PoW algorithm

PoW is one of the oldest algorithms that was used in the creation of the very first Bitcoin cryptocurrency. The first description of the protocol appeared in 1993. As planned by the authors, he had to fight spam. And the algorithm performed this function. In 1997, Adam Back successfully launched the Hashcash project, which was based on the concept of PoW. Senders of letters, using the power of a PC, had to carry out billions of calculations that confirmed the truth of the subject of the letter. This solution blocked spam. From the technical side, it looks like hashing a selected range of data, for example, lines from a letter.

2 years after the launch of Hashcash, the term Proof-of-Work first appeared. During this period, the algorithm, like a mathematical captcha, solved several simple tasks that protected the system from spam and DDoS attacks. To perform operations, significant resources were not required, so the system worked smoothly.

In 2000, the developers decided to update the mechanism by introducing auxiliary functions into it. This required an increase in memory capacity and a revision of hardware requirements. The requirements of high processor speed have been replaced by large amounts of RAM. It was during this period that Bitcoin miners switched to powerful video cards.

The development of cryptocurrencies and the improvement of equipment have increased the load on the system and complicated the execution of tasks. The PoW algorithm literally began to "devour" electricity, which led to a decrease in rewards. Mining of popular cryptocurrencies became unprofitable. In 2012, the performance of the Bitcoin blockchain exceeded the energy consumption of the world's most powerful computer. After the advent of the PoS algorithm, Proof-of-Work began to fade into the background or be used in tandem. Today, the work done algorithm is used in projects that continue to issue tokens.