Now the prices of all cryptocurrency have fallen sharply from their peaks. I think now is a great time for us to invest in Bitcoin and altcoin. I predict that next month the market will grow and prices will increase, maybe by the end of this year Bitcoin price will reach $ 20000. So we should buy and hold Bitcoin from now on if we want to make a profit later this year. Besides that we can also buy some altcoin like Ethereum, Cardano, IOTA and NEO.