What is the function of the ProBit?

Excuse me, could you elaborate on the function of the ProBit platform? As a professional in the cryptocurrency and finance field, I'm curious to understand the specific role it plays within the broader ecosystem. Is it primarily focused on facilitating trading between different digital assets? Or does it offer additional services such as token issuance, custody, or market analysis? Understanding the unique features and capabilities of ProBit would greatly help in assessing its potential impact and value proposition.