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How can we recognize the new coins & new exchanges are safe (not fraud).If there are group of people (ex.40-50 people) are making coin or
exchange, is that trustable or it doesent matter that there are only 5 people?
How can we recognize new coins and exchange, what legal paper have to be on them website on that we can assure coin and exchange is trustable?
Well, they should have legal documents to be presented during launching of their product. Just like checking on the website, whitepaper, the team behind and other documents show their legalization. But even they had passed all of these you can't assume that you are safe, there is always a risk. Indeed, forum is a great tool to find and busted fraudster projects. We have a concerned citizen here to always investigated scam projects and fake documents. You can check it here,
https://bitcointalk.org/index.php?board=83.0.