As most guys may notice Hashnest PACMiC V3 is ready to order now, 1BTC can get 1.5TH/S hash rate and with promising annual profit of 25%. Many guys are buying it now. Most advantages of the altcoins are based on the disadvantage of bitcoins. There are many exchanges and apps for bitcoins, but which is the most popular for altcoins? I have some dogecoin, namecoin, bts and it's not convenient to save in cold wallet. Any good suggestion to earning more altcoins while we storing them?

As the PACMiC  https://www.hashnest.com/l/Rz5jEPxvenE

if the similar app is suitable to altcoins, which coins will be used? Who will pay for the earning coins? Frequency trading? Profit arbitrage without any risk?

my dogecoin wallet
http://i.imgur.com/L9QpJxT.jpg

other coin wallets

http://i.imgur.com/eDPuuxY.jpg