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This is a good article that explains it.

Bitcoin Cash: What You Need to Know: https://medium.com/@jimmysong/bitcoin-cash-what-you-need-to-know-c25df28995cf

Really helpful article thanks. I'd no idea how it actually worked

if you are holding Bitcoin you get 1:1 meaning that if you have 2 BTC you will get 2 Bitcoin Cash. I don't know on paper wallets, but Kraken said that if you have Bitcoins with them at the moment of the fork they will credit Bitcoin cash.