Cryptocurrency capitalization, also known as market capitalization or market cap, is a measure of the total value of a cryptocurrency in circulation. It is calculated by multiplying the current market price of a cryptocurrency by the total number of coins or tokens that are in circulation.

For example, if a cryptocurrency has a market price of $100 and there are 10 million coins in circulation, then its market capitalization would be $1 billion.

The total market capitalization of cryptocurrencies is constantly changing and can be quite volatile. Bitcoin was the largest cryptocurrency by market capitalization, accounting for over 40% of the total market cap at that time. Other major cryptocurrencies like Ethereum, Binance Coin, Cardano, and Dogecoin also had significant market capitalizations.

However, it's important to note that the market capitalization of cryptocurrencies can change rapidly due to a variety of factors, including market sentiment, regulatory developments, and technological advancements. 

Cryptocurrency capitalization is an important metric for investors and traders because it gives an idea of the size of a particular cryptocurrency market, and how it compares to other cryptocurrencies. It can also be used to compare the value of a cryptocurrency with traditional assets like stocks and bonds.

Market capitalization can fluctuate based on changes in the market price of a cryptocurrency and changes in the total number of coins or tokens in circulation. If the market price of a cryptocurrency goes up while the total number of coins in circulation remains the same, then the market capitalization will increase. Conversely, if the market price goes down while the total number of coins in circulation remains the same, then the market capitalization will decrease.

It is important to note that market capitalization does not necessarily reflect the true value or potential of a cryptocurrency, as market sentiment and speculative trading can heavily influence the market price and market capitalization. As with any investment, it is important to do your own research and analysis before making any investment decisions.