What are the best index funds to invest in for the cryptocurrency market in 2023?

I am looking for the best index funds to invest in for the cryptocurrency market in 2023. Can you recommend any index funds that are suitable for long-term investment? I want to diversify my portfolio and minimize risks while maximizing potential returns. What are the key factors to consider when choosing index funds for the cryptocurrency market? Are there any specific index funds that have performed well in the past and are expected to continue performing well in 2023? How do these index funds differ from individual cryptocurrencies? Are there any index funds that offer exposure to a wide range of cryptocurrencies? What are the fees associated with investing in these index funds? How can I get started with investing in index funds for the cryptocurrency market in 2023?