Cardstack started the Official Bounty Program to reward its supporters with a business card token (Symbol: CARD).
however I did not find the total supply of this great project,
anyone can help, because I am very interested in this project.
Have you read the whitepaper? I think thid is the most basic question and you can find that important question in the whitepaper or the official website, Now, the ICO is ongoing, do not miss that good chance.