When GRVT opens the third phase, the airdrop voucher can be redeemed: The old friend of Hei Nu 
@grvt_io
 has been very active recently. He got tens of thousands of points but was stuck on kyc before. Now he can pass the certification. If you have gotten tens of thousands of points before, remember to get the certification and then get the airdrop voucher. Get: https://grvt.io/exchange/sign-up?ref=IYKJU2A I studied this era system. It is probably about accumulating points through activity. Each era badge corresponds to different airdrop rewards.