At the moment their is big changes in the price of Polkadot (dot) coin. The coin rise up to $20 with a daily price increase of 3.88% and 25% increase in the last seven days. Most of the crypto coins are on the rise at the moment, not even polka (dot) coin. I see investors of all this coins especially the top coins smiling today, cos the coins have made drastic increase at the moment.