link to download and instuctions, also found on the first page
https://github.com/semuxproject/semux

I'ts still in testing stage so not yet found on exchanges.
Not sure if there is an ETA for exchanges.

Ubuntu 64 Bit, recent release candidate (just downloaded from Github): sync stuck every few thousand blocks with the "Invalid Block" message.

I'm getting "Invalid Block" every now and then, and the first few times, it just syncs on, but then, all of a sudden, it's stuck and doesn't continue. Then I close the wallet, reopen and it continues for a while.

Error message is just this:

"2017-12-05 11:31:08 [sync-0] INFO  SemuxSync - Invalid block"

How many airdrops are left?Is it too late for me to get involved?I tested it and I need to run it in Java. That's interesting.

I downloaded your wallet, officially join your bounty today, where can I check my registration status?

Joined today, hope not too late, i like development, true work with single higher steps 

Need to set the computer time zone, there is no unified time zone, or use their own time zone can?

You timezone does not matter, but your time has to be correct in your zone...

The airdrop doesn't work with segwit addresses?

It will distribute this weekend.

But a spreadsheet would be nice.