What is a dot link?

Excuse me, could you please clarify what exactly is a dot link? I've been hearing a lot about it recently in the context of cryptocurrency and finance, but I'm still a bit hazy on the details. I understand it has something to do with blockchain technology and potentially enhancing transaction speed and privacy, but I'd really appreciate it if you could provide a more comprehensive explanation. Is it a new type of cryptographic protocol? Or is it a specific application within the cryptosphere? Any insights you could share would be greatly appreciated.