What is the name of the cryptocurrency with the highest market capitalization?
As of October 2021, the cryptocurrency with the highest market capitalization is Bitcoin (BTC). However, it is important to note that market capitalization of cryptocurrencies fluctuates frequently due to the volatile nature of the market.
Complete the following task based on the instruction and optional input provided.### Instruction:
What is the name of the cryptocurrency with the highest market capitalization?

### Output:
As of October 2021, the cryptocurrency with the highest market capitalization is Bitcoin (BTC). However, it is important to note that market capitalization of cryptocurrencies fluctuates frequently due to the volatile nature of the market.