What is the sidus link?

Excuse me, could you elaborate on what exactly is meant by the term "sidus link"? I've come across it in a few discussions related to cryptocurrency and finance, but I'm not entirely clear on its significance or purpose. Is it a type of blockchain technology? A specific platform or service? Or perhaps a reference to a particular aspect of decentralized finance? I'd appreciate it if you could provide a concise yet informative explanation to help me better understand this concept.