Well, I'm not going to judge this but why we have to deposit on a particular address in order to participate? Is that wallet address that holds the funds and after making the deposit it has gone?

Anyway, people have to know how a scam trick been propagated around.
It was a really attractive reward (0.01BTC) but I'm not sure if it is truly attractive seeing we need to deposit first. This site is new, we can't guarantee if they will never run. I see a high risk of participating in this lottery. I hope I was wrong and they are true of what they say.
Since the OP is not in any way connected with the project, he can't say how authentic and legit this lottery is. 100 LONG is about 0.0014 USDT based on whitebit current rate. The amount needed to join the lottery is small. But don't know how much you can trust this website. Maybe if you have spare USDT to buy LONG you can try this out. But consider it as a loss already.