I have bitcoin in coinbase for quite some time . In December, there were four hard forks on bitcoin. But coinbase doesn't support any of them. So can someone tell me how do I get those coins?
Keep your coins in a hardware wallet such as a Nano S or Trezor
Do I get the coins if I move to a wallet now? Given that the fork was done when the bitcoins were still in coinbase?
No you don’t. You’ll only get those forks if Coinbase chooses to distribute them.
Put your coins in a wallet and don't store them on coinbase