I dont know what i should be look for how do i know coin is scam? people cant do premine anymore so how are they trying to scam us now? It seem to me every coin is scam how can i avoid this?
A premine does not absolutely indicate a scam. Original Ripple holders still possess a great majority, yet it is the second largest by market capitalization.
I hope you're joking. A rough estimate I'd say, is that 99% of all coins that have had a premine, instamine, whatever, has been a scam in one way or the other. Ripple isn't a cryptocurrency, plus it's centralized. Please don't compare a payment gateway such as Ripple to Cryptocurrencies. Ripple's marketcap is also worthless, since the owners of ripple control 80% of the supply, meaning that the entire marketcap and subsequent price-per-ripple is practically controlled by the creators of Ripple labs.