Thank you for your information @phoenixwren , Yes I have read some points from their blog post and was not sure. I have seen school got 100 DTC. I tried yesterday and deleted 300+ MB caches from browser to see claim button for school. But it didn't work so I thought school already received the airdrop. I will try to learn more and will register my name as well with dtube chain. Thank you for all kind help you do for the kids and people on steemit.