Why is BCD useful?

Could you please elaborate on the significance of BCD? I'm curious to understand what makes it so useful. Could you highlight some of its key features and benefits? How does it contribute to the world of cryptocurrency and finance? Is it widely used, and if so, why? Additionally, could you provide some real-world examples or scenarios where BCD has been effectively utilized? I'm interested in understanding its practical applications and how it benefits users. Thank you for your insights.