пpaвилнo!
  yжe бoльшe нeдeли ищy этoт "пpoкляти" aдpecc

Yes, you'll get

+3% every Monday in Novemeber
+4% every Monday in December
+5% every Monday in January
+6% every Monday in February and so on until all funds from the airdrop address https://chainz.cryptoid.info/btx/address.dws?13hwgY4YUvrgnhjLP5ugFafL1cmbRRtr5e.htm are spent.

see here for more details
https://bitcore.cc/faq.php

you need to register for airdrop though
https://bitcore.cc/airdrop.php

same here, they stolen  us money.

I received mine 1 hour ago.

You can at any time register your address and participate in the airdrops getting full %.

Thanks for your clarification.

I've backed up my wallet (wallet.dat file). Today I have created another address(inside the same wallet) where I deposited some btx. Do I need to make a new back up ?

It is the Black Friday alt sale, stock up on all your favourite coins while they are still on special offer. Lol.

BTC bull run is really having a negative effect on most alts, it will get better soon though. Just have to grow your stash while price is down, or hold BTC, and wait it out.

I am a little worried, that strong bullish movement will negatively affect all other coins, but when it turns to strong bearish movement, it will also negatively affect some alt coins, BTX including...

you right. I was using the Bittrex code BCC = BCH indeed.