How long does it take to get proof of funds?

Can you tell me, roughly speaking, how much time should one expect to pass before they receive proof of funds in the world of cryptocurrency and finance? Is it a swift process that happens within a matter of hours, or does it often require days or even weeks to confirm the availability of financial resources? Additionally, are there any specific factors that can affect the speed of this process, such as the size of the transaction, the specific cryptocurrency involved, or the location of the individual seeking proof of funds? Understanding these nuances is crucial for making informed decisions in this dynamic and ever-evolving landscape.