Anonymity
Bitcoin has a good level of anonymity because the cryptocurrency in a virtual wallet is not tied to people, but to one or more specific keys (or "addresses"). Thus, bitcoin owners cannot be identified, but all transactions are publicly available on the blockchain.

In early 2018, South Korea banned anonymous cryptocurrency transactions, forcing payment intermediaries to reject or terminate any transaction that does not allow verification of the counterparty and the legality of the purposes of the exchange and the acquisition of financial resources.

Cryptocurrencies are mainly used online through channels outside of the banking system, acting as an alternative to traditional payment and store-of-value systems.

Market capitalization trend
The market capitalization of cryptocurrencies has changed significantly over the past few years:

In 2017, the market capitalization increased from $30 billion to $800 billion.
In 2018, it dropped to 450 billion dollars.
In the first quarter of 2020, it fell to 280 billion dollars.
As of November 2020, the market capitalization is about 530 billion USD, and Bitcoin occupies about 65% of the total capitalization with 342 billion USD.
Competition between cryptocurrencies
In November 2020, the CoinMarketCap website reports on more than 7,700 different cryptocurrencies traded on various exchanges.

Indexes
The index is used as a tool for measuring market efficiency. There are various methods for building an index, and even in the cryptocurrency industry, some of them have been created.

The CRIX Cryptoindex
The CRIX index is the result of a study by Humboldt University of Berlin, Singapore Management University and CoinGecko. It uses an algorithm that takes into account the frequent changes in the market with the constant creation of new cryptocurrencies and the low trading volumes of some of them. For this reason, the number of components of this index is reviewed every 3 months. Therefore, it is a "dynamic" index.

CCI30 Cryptocurrency Index
The CCI30 index consists of 30 cryptocurrencies with the largest market capitalization. It was created by a team of mathematicians, quantitative analysts and traders led by Professor Igor Rivin and economist Carlo Shevola. These components are weighted based on the square root of the market capitalization that has been filtered accordingly. The composition of the index is reviewed every three months using an exponential moving average of market capitalization. The CCI30 index is calculated as of January 1, 2015 with a value arbitrarily set to 100. CCI30 is freely available to the public and can be replicated by funds following a passive investment strategy. Explore the excitement of SpinFred Pokies — the ultimate spot for slot lovers. With an enormous selection of classic and modern pokies, every spin brings new thrills. Secure transactions, fair play, and daily promotions make SpinFred a top choice for all casino fans.