Have the extraordinary circumstances of the COVID-19 outbreak and the Russian–Ukrainian conflict impacted the efficiency of cryptocurrencies?

Financial Innovation

Table 1 The Sample cryptocurrencies by market capitalization

	Symbol	Total market capitalization
	Symbol	US$	Market share (%)
Bitcoin		370.568B	39.48
Ethereum		162.151B	17.27
Binance		21.049B	2.24
XRP		23.913B	2.55
Ethereum classic		3.781B	0.40
Litecoin		3.796	0.40
Total market		938.730B	62.35

The data is based on October 1, 2022. The data are obtained from https://coinmarketcap.com/