but we were not 100% convinced that it was scam...
Really?! I think you knew and think it would fly on Shittrex and pump to 200% before dumping. It's 2016, dude.
Red flag 1. Who dubs their own video, when in forums he can send messages in English
Red flag 2. Title itself -
Precious Metals-Backed Crypto-Platform on BlockChain - in every venture of this type for the last three decades, there's always a catch to these things.
Note for future investments:
Any sort of legitimate gold-backed, commodity-backed, deposit-backed, etc will only come after govenment oversight and regulation. Because it is one of the commonly used scams everywhere!