How to set up the opera browser. How to set up opera on a computer

 The process of installing the Opera browser on a Windows computer is quite simple, but for those who are used to learning how to do something first, and only then do it, in this article we will look at how to install the Opera browser on a computer. To do this, you need to download the official version of the Opera browser (how to do this is described in detail in → this article). Then double-click on the downloaded file with the left mouse button. This will start the process of installing Opera on your computer. Starting the installation process of Opera on your computer For security reasons, when installing new programs on a computer, you need to confirm that this is done in a sober mind and solid memory. Therefore, this window will appear first: Starting the installation process of Opera on your computer It asks: "Run this file?". If this is indeed an Opera installation file downloaded from the official site, as described by the link in the introduction to this article, t...

Relationship between algorithm and cryptocurrency space

 Relationship between algorithm and cryptocurrency space


In the very first virtual currency, PoW is needed to achieve consensus in the network. Since at any given time for each user there can be several versions of the blockchain at once, the algorithm determines which one is reliable. To implement his idea, Nakamoto took advantage of the developments of the Hashcash project mentioned above, slightly modifying the finished function (adding a mechanism for changing its complexity, which depends on the total computing power of all network nodes). The finished function is called SHA-256.



The PoW algorithm is necessary for checking by network nodes that the miner has performed calculations. The latter performs calculations of complex algorithms, as a result of which a new generated block (“cell”) is added to the block chain, storing a certain number of records of completed transactions. The proof-of-work mechanism attempts to find the hash of the node header, which contains a reference to the previous "cell" and the total value of all operations placed in the newly generated node. Hash exponents correspond to the set degree.