Is Bitso a unicorn?

Could you please clarify for me what makes a company considered a "unicorn" in the business world? And with that in mind, what specific factors or achievements would indicate that Bitso, as a cryptocurrency exchange platform, could be considered a unicorn? Are there any recent valuations, funding rounds, or market share gains that suggest Bitso has reached this status? I'm curious to understand the basis for the question "Is Bitso a unicorn?" and how the industry typically defines such a designation.