Does the dev announce on where can we register for the airdrop #6? or is it automatic for all those people who joined since round 1?
I bought few more coins to complete the 500 coins requirements and waiting for more updates.
As far as we know you are good if you have 500 coins on one address. No other requirements are known. The distribution period will be 14 days so I assume there will be multiple snapshots so that you probably didn't need to have 500 coins on the day it was announced.
Even better, if the developer reported when, what number will snapshots. I think many then could have bought more coins.