Now the mainstream currency, BTC-ETH, has the upper hand, and they have the strength and technology, but the future is likely to be a new project to replace them more mature and more comprehensive. What do you think it would be?
Opinion alone, if Bitcoin experiences a bad day, then the new king is ethereum. Ethereum is very popular and many investors use ethereum blockchain as a supporter of their projects. Ethhereum's potential is very high, because demand in the market is always above average. This is the coin closest to bitcoin, besides ether I think I still have to work hard.