An interesting question. Currently, I see a lot of types of altcoins appear on the market, they also have the potential and gradually become profitable investments after Bitcoin. My first favorite altcoin was Ethereum, it was definitely. Ethereum is not just the name of an algorithmic currency; it is precisely the international network of connected computers. Copper Ether is present in the form of computer code and has a separate Blockchain-based hierarchy, so we can do more with it. Besides Bitcoin, Dash and Ripple are my choices, they are very good altcoin, very potential in value.