but recently I got a link [https://www.kucoine.net/] and I'm not sure whether is genuine or a fraud.
Oops, maybe there have been a lot of formations given by other members in this thread, especially about exchanges (kucoine.net), regardless of whether they are scam or legit, which must have been a lot of problematic exchanges lately, whether they are hacked, scammers and so on, it is important to be thorough and careful before using an exchange to trade your crypto.
For this reason, in the future, so that you don't miss out on which exchange is better for you to use, there are several things you need to learn and look at
Topic:Compilation of all "Scam Accusations" threads related to exchanges, Hopefully it can be a guide for you in the future.
Bottom line: study, research and keep asking close friends before using a crypto exchange for your own good.