What is the first and the largest cryptocurrency?

The first and the largest Cryptocurrency is Bitcoin. Bitcoin is the first form of digital currency released in the market and these coins are not issued or controlled by any centralized authority. The transaction of bitcoin carried out in a peer to peer manner became a huge success.The transaction details were being stored in the distributed public ledger. Bitcoin has a finite supply like any other precious metals. There are only 21 millions bitcoins which when completely mined will leave us to rely on the bitcoins in circulations. In order to acquire a bitcoin the miner has to mine form the bitcoin network. The miners who are present in a bitcoin network solve a computational problem and receive bitcoins as a reward. By this way the crypto currency is been generated for the further use.The success of the bitcoin lead to the development of alternative coins(Alt coins). The cryptocurrency Exchanges were being developed in order to facilitate the Exchange of Digital currencies