From my knowledge personal wallet associated with an exchange is actually holding there... not in your wallet. But not sure about that, you better find out in what conditions you are with that wallet to be sure.
Initialy, i heard it could work only on personal wallets, but now i see bittrex and kraken said they will double it for everyone who has some bitcoin amount there.
Coinbase, don't. So search for places you store your bitcoin to see details.
Although, who knows what joke it is with that thing... doubling money... huh :-). Isn't it sound to good to be true? hehe
It often is! But it does look like this is the case. The thing we don't know is what the value of the BCH will be :). Could be sold down straight away...having said that the value of the futures is $375 US now.
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