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 ...

What is Proof of Work (PoW)?

 What is Proof of Work (PoW)?

Back in 1993, two IBM analysts Cynthia Wark and Moni Naor published a scientific article in which they stated that it would be possible to provide access to certain network resources only if the most complex tasks were performed.

In May 1996, British cryptographer and developer Adam Back was able to implement this concept into a technology called Hashcash, used in online systems to protect against spam attacks. Then he did not even suspect that he laid the foundation for the creation of digital currencies.

In 1999, the term PoW was designated as a unique principle for protecting network systems, with which you can effectively protect yourself from powerful dos-attacks.

In 2004, developer Satoshi Nakamoto integrated Hashcash into Bitcoin, which became the first digital currency to use the concept of PoW.