What happens to the Bitcoin Cash if Coinbase (and others) do not credit their customers with it?
If having possession of the private key means that you have access to both your Bitcoin and Bitcoin Cash does that not mean that Coinbase have access to the funds stored in Bitcoin Cash of their clients? If so how can they hold on to it and not pass it on?
Anyone have an answer to this?
they only have your public key. Noone should know your private key.
If your Bitcoin is with Coinbase then you have entrusted them with your Bitcoin and hence they have the private key to your Bitcoin and they have total control over it. This means that any Bitcoin Cash that is associated with the keys are under Coinbase's control as I understand it. They should be crediting you with the Bitcoin Cash or how do they justify keeping it. I am happy to be corrected if anyone can provide a justification.