From Scharmbeck's Cryptostocks Info:
"1. A randomly selected Scharmbeck Feeshare (SBFS) holder will be invited to perform the simple bounty task within seven (7) days of Scharmbeck selling out second round SBFS shares on the Cryptostocks exchange (
https://cryptostocks.com/securities/60)."
Technically, the 500 btc is not a give-away. A bounty must be performed.
is there a consensus as to whether this is a scam or not?

The lottery bounty was never going to happen since the condition stated that they had to sell out the 100K new shares at .05btc before the drawing occur.