Bitcoin (BTC) Market cap: Over $821 billion
Tether (USDT) Market cap: Over $68 billion.
Ethereum (ETH) Market cap: Over $353 billion
Cardano (ADA) Market cap: Over $67 billion.
Binance Coin (BNB) Market cap: Over $64 billion. .
1.Bitcoin
Bitcoin is a digital payment currency that utilizes cryptocurrency (a digital medium of exchange), blockchain technology, and a peer to peer (P2P) network as opposed to a central authority (such as a bank) to create and manage monetary transactions. The open source, P2P Bitcoin network facilitates the creation of all bitcoin and manages all bitcoin transactions.
Often referred to as “cash for the Internet,” Bitcoin is one of several popular digital payment currencies along with Litecoin, Peercoin, and Namecoin. When the word Bitcoin is capitalized, it usually refers to the software and systems used for bitcoin (in lowercase it refers to the actual currency).
2.Tether
Tether is a so-called “stable coin,” which is supposed to be worth 1.00 USD at all times. The purpose of a stable coin is the same as a bank or money market account. The goal is to provide a safe place to deposit funds and to allow for quick and inexpensive transfer of funds as needed.
How Tether is “backed” with assets remains a source of concern. So far, the company behind Tether has not published the results of any independent audit.
3.Ethereum
Ethereum is different to Bitcoin, but not entirely different. They are of course both cryptocurrencies, and they both work on blockchain distributed technology, but whilst Bitcoin is by far the best known, the forerunner of all the others, and has a current value at least ten times that of Ethereum, its value is more that it is an investment greater than gold, that is on what appears to be a never-ending exponential curve of increasing value. It is something that people who can afford to do so, buy and hold, and has a year's long track record of recovering from every dip in value to a new high. It’s the retirement fund for tens of millions of people.
4.Cardano
Cardano's main applications are in identity management and traceability. The former application can be used to streamline and simplify processes that require the collection of data from multiple sources.
Oversight of the advancement of the Cardano protocol ecosystem is decentralized and responsibilities are shared by Cardano's partners: The Cardano Foundation, IOHK, and EMURGO. The Cardano Foundation, a not-for-profit organization, is the legal custodian responsible for the primary oversight and supervision of the Cardano brand. The foundation advances the visibility of the protocol on the global stage, cultivates use-case opportunities and connects with policymakers, regulators, and academia.
5.Binance
Binance Pay is a contactless, borderless, and secure user-to-user cryptocurrency payment feature on to Binance App. Launched as beta in February, Binance Pay's functions allow users and merchants to send and receive crypto payments around the world without incurring special handling fees for using crypto.