Re: [ANN] Bitcore - BTX - SEGWIT - BLOOM - ONLINE - CORE 0.14.1 -431110+ BTX Claimed

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. "

After the 2nd of November:
How much will the airdrop be as a % ?
Will it be weekly or monthly ?

The percentage will depend on how much is left . As of know it is around 15.5 million so do the math.
The devs are deciding if they want to do the airdrop at once or in multiple drops. All this info can be found in this topic.