how we can make sure this fund will really donated to Nepal, and used to help them, it can be a possible scam attempt.
We can't. User has been left negative feedback. I'll change if he removes his bitcoin address. I have PMed him.
We don't want any good intending newbies to fall for this when they could be actually helping Nepal by using a legit donation service.
I've changed my feedback from negative to neutral. I don't think any one will be naive enough to send bitcoins to that address thinking they will end up in Nepal.
OP - you should remove your bitcoin address and let the proper donation channels handle donations. It looks like you are scamming.