Generally with Coinbase, they have a premium feature and a regular application, and those that choose the premium get access to trading coins that are not available on the free and regular account. This is used to test the popularity of a coin. With polkadot doing very well, the DOT coin i expected to be added to Coinbase pro today, and this will certainly help in causing a rally behind this coin, as many people will gain confidence in the coin from this movement. What are your thoughts on this?