What does USDB stand for?

Could you please elaborate on the acronym "USDB" and provide a concise yet informative description of its significance in the context of cryptocurrency and finance? As a professional practitioner in this field, I'm curious to understand the underlying meaning and potential implications of this term. Is it a new digital currency, a platform, or perhaps a regulatory framework? Clarifying this acronym will greatly aid in my comprehension of its relevance and potential impact on the industry.