What is Cryptocurrency?
Crypto are systems that allow for secure payments online which are denominated in terms of virtual "tokens," which are represented by ledger entries internal to the system.
"Crypto" refers to the various encryption algorithms and cryptographic techniques that safeguard these entries, such as elliptical curve encryption, public-private key pairs, and hashing functions.
The first blockchain-based cryptocurrency was Bitcoin, which still remains the most popular and most valuable. Today, there are thousands of alternate cryptocurrencies with various functions and specifications. Some of these are clones or forks of Bitcoin, while others are new currencies that were built from scratch.
Bitcoin is by far the most popular cryptocurrency, followed by other cryptocurrencies such as Etherum, Litecoin, and Cardano.