The content of this issue is very exciting. It will decipher the three major revenue sources of cryptocurrencies. How sustainable are they? What are the risks? How does the GBTC premium or discount affect the market? Compared with the traditional financial system, cryptocurrencies have unusually high yields, allowing investors to earn about 20% on fiat currencies and stablecoins, and even higher on other assets. In this session, Hasu and Su Zhu ask a very simple question: where do these benefits come from?