Coinbase does not support Bitcoin Atom. How do I do this? And, since the coins are in their wallet, they have the only access to the keys.
Yeah I read your post as coinomi for some reason. You would need to move your coins to a supported wallet before the fork. Or wait till after the fork and then get your private key and import that to a wallet that supports atom.
No idea how you get the private key from coinbase but I'm sure someone else will be able to help with that part. The good news is that there is no rush for it, you will be able to do it recursively. As long as you own bitcoin at the fork and you can get the private keys for the wallet they are in then you can do this any time after the fork.
Right, but Coinbase is the only one that has the keys at the fork. How do I get it from them?
It's very unlikely or basically impossible they would do so. You will need to transfer your btc in order to claim bca
