Step-by-Step Guide: Visit the Contentos airdrop page. Create an account at Contentos. Submit your details and sign up for the airdrop. Submit your Contentos UID to the airdrop page. (+10 entries) Complete additional social tasks to get a total of 210 entries. Every 10 entries are worth 1 COS token. You will get a total of 21 COS tokens. Also get 1 entry for each referral up to 100 referrals. Earn more entries by completing the bounty tasks. You need to a minimum of 200 entries to be eligible for the airdrop distribution. For more information see this document.