No altcoins won't go down, because their value is in usd and as soon as they go down they will quickly come up, when people buy any altcoin they see it's value as usd and it's marketcap and it's future prospects, but they never see their btc value or other things
And i would like to tell the devs that pleeease bring open beta and that too perfectly nice one till 13th august, because people have been dying since long to see that amazing grand day

Lol. Another clueless investor. If you don't understand that when BTC tanks, all the rest tanks even harder, then you should be baking cookies, not investing.
Here you have the latest video of the dollar vigilante. He says exactly that. If BTC goes down, the rest will go down even harder.
https://www.youtube.com/watch?v=rXKIUNAbL-QThere you have it, new people. I exposed profitgenerater and Ayjahjesijljflsjdos. Don't listen to their advice. Only do so if poverty is your goal.