What is the usage of Qtum?

As a cryptocurrency enthusiast, I'm curious to understand the unique value proposition of Qtum. Could you elaborate on its usage and how it differs from other blockchain platforms? Specifically, what are some of the key features or functionalities that Qtum provides that other cryptocurrencies lack? Furthermore, what industries or sectors do you think Qtum has the most potential to disrupt or transform? Additionally, could you provide an example or two of real-world applications where Qtum is being utilized effectively?