Discord based airdrop has been proven to be ineffective in fighting against multiple claims. The group will surely be flooded with non-sense for people to level up their activity account.

You should consider this and i am sure you dont wan't to make your coin to be held by a few person controlling numerous discord accounts.

But my suggestion if you really want to utilized discord you should attach BCT account to their discord and limit the distribution based on BCT rank. to prevent mass participation of newly created newbie accounts.