Bitcoin (BTC) Price, Real-time Quote & News

Bitcoin is the first decentralized cryptocurrency. Based on a free-market ideology, bitcoin was invented in 2008 when an unknown person published a white paper under the pseudonym of Satoshi Nakamoto. Use of bitcoin as a currency began in 2009, with the release of its open-source implementation. From 2021 to 2025, El Salvador adopted it as legal tender currency before revoking it. As bitcoin is pseudonymous, its use by criminals has attracted the attention of regulators, leading to its ban by several countries. Bitcoin works through the collaboration of computers, each of which acts as a node in the peer-to-peer bitcoin network. Each node maintains an independent copy of a public distributed ledger of transactions, called a blockchain, without central oversight. Transactions are validated through the use of cryptography, preventing one person from spending another person's bitcoin, as long as the owner of the bitcoin keeps certain sensitive data secret. Consensus between nodes about the content of the blockchain is achieved using a computationally intensive process based on proof of work, called mining, which is performed by purpose-built computers. Wikipedia

About Russian Ruble

The ruble or rouble is the official currency of Russia. Banknotes and coins are issued by the Central Bank of Russia, which is Russia's monetary authority independent of all other government bodies. The ruble is the second-oldest currency in continuous use, after pound sterling, as well as the first decimal currency. The ruble was the currency of the Russian Empire and later the Soviet Union, where it was known as the Soviet ruble. Following the dissolution of the Soviet Union in 1991, the Soviet ruble was replaced in Russia with the Russian ruble at par in the following year. The Russian ruble continued to be used in 11 post-Soviet states, forming a "ruble zone" until 1993. In 1998, the ruble was redenominated shortly before the 1998 financial crisis, at a rate of 1000 RUR = 1 RUB. The ruble is a free-floating currency and is subdivided into 100 kopecks which have fallen out of use due to inflation. In 2023, the digital ruble was introduced. The Russian ruble is also used as a de facto legal tender in Baikonur, Abkhazia and South Ossetia. Wikipedia