How does the GFI work?

Could you elaborate on the functionality of the Global Financial Index (GFI)? I'm particularly interested in understanding how it operates within the realm of cryptocurrency and finance. Does it provide a benchmark for the overall performance of the industry? How does it gather and process data to generate its index? What factors does it consider in its calculations? And how does it differ from other indices in the market? A concise yet thorough explanation would be greatly appreciated.