A cryptocurrency is a digital or virtual currency that is secured by cryptography, which makes it nearly impossible to counterfeit or double-spend. Many cryptocurrencies are decentralized networks based on blockchain technology—a distributed ledger enforced by a disparate network of computers.
What is bitcoin?
Bitcoin is the oldest digital currency on the world market. Physically, this currency doesn’t exist, there are only special registers that keep track of how many bitcoins anyone has, how and where it transfers etc.
Bitcoin was created by an unknown using the alias Satoshi Nakamoto in 2009. The main goal of creating bitcoin was to provide a working alternative to the traditional fiat currency. Bitcoin is a currency that is not associated with any one state. New units of bitcoin appear in the process of how computers in this payment network serve the needs of the same network.
How many bitcoins can I buy?
The maximum coin supply of bitcoin is limited to 21 million, but it’s possible to buy a small fraction of a coin — each individual coin can be divided down to 0.00000001 BTC.