Let's see what are they.
When you buy DUK+ you store the coins in your MCA account. This is like an usual another wallet to save your DUK+.
But because of that fact that DUK+ is a cryptocurrency you can store your coins to blockchain. This will be useful if you wanna to send some coins from one Smart Contract to another. All transaction will be recorded in blockchain.
For this day transfers to/fro…