Thanks to all. Through the last two comments posted I've come to see that Byteball has 2 currencies i.e Bytes and Blackbytes. Prior I was thinking of a byte as a numbered unit and not as a currency.

"Already now, bound payments allow you to P2P exchange bytes (the native currency of Byteball) against blackbytes (a private untraceable currency on Byteball platform) or any other asset issued on Byteball."

Q. Looking at the notes associated with the 7th round offer, there is a split with what you can get in either bytes or Blackbytes. So, you just let Byteball know which you would prefer or do you just convert the one you get over to the other without cost?