So to claim BTX I had to have btc on certain address before the snapshot date?
try reading page 1 and you'll find the following quote
"Every BTC holder can claim his coins with the BTC Signature 1:1 1BTC = 1BTX.
The claiming period is 6 months until 02 November 2017. After this period we split the rest to the BTX Holder in steps. 10% from the unclaimed rest is for the BitCore Foundation.
We make small airdrop rounds in the future. "