Billed as the mother of all cryptocurrencies, Bitcoin which is a decentralised digital currency was created by someone called Satoshi Nakamoto (possibly a pseudonym) in 2009. As with most cryptocurrencies, Bitcoin is without a central bank or single administrator that can be sent from user to user on the peer-to-peer Bitcoin network without the need for intermediaries. Transactions are verified by network nodes through cryptography and recorded in a public distributed ledger called a Blockchain, according to IANS report.
Virtual currencies. Like fiat currency, virtual currencies such as Bitcoin, Litecoin, and Ether are intended as a medium of exchange that enables two parties to transact business. But there are important differences: No physical coins or bills. Virtual currencies exist only in computer code. Except for visual representation of Bitcoin and altcoins in advertising and displays, and coin-like tokens that may be produced for marketing purposes, there are no actual coins or bills. Not legal tender. Virtual currencies are not legal tender and are not issued or backed by a government. However, many virtual currencies, which are called convertible virtual currencies, can be redeemed for fiat currency on a number of exchanges. No regulation. Virtual currencies are not regulated by any government agency or authority. However, regulation is being considered, especially where virtual currencies function as securities when they’re used to raise capital and when traded on exchanges.

Cryptocurrencies either have a limited or predetermined coin supply—although, with over 2,500 cryptos listed on hundreds of online exchanges, a number which is sure to increase over the coming years, it’s hard to generalise.
Bitcoin. First introduced in late 2008, it is a specific currency in an electronic payment system that acts as an alternative to fiat currency. It exists only on computers and the internet. It is not backed by a government, and its price is not set by a centralized authority.