hello are you still using coinbase to store btc?
No surely now they are not using Coinbase for storing bitcoins.
And I don't think they ever used Coinbase to store Bitcoins. This is how they keep it (quote from Freebitco.in website):
We use a combination of hot wallets, hardware wallets (Trezor) and BIP38 encrypted paper wallets to store bitcoins. At no time do we keep more than 5% of our total bitcoins in the hot wallet which is used for making payouts. The hardware wallet is used as a "warm" wallet and bitcoins are transferred from it to the hot wallet as required. Our paper wallets serve as our "cold" storage with the wallets generated on an air-gapped computer running Tails OS. Our hardware and paper wallets are also secured against physical theft as the hardware wallet requires a pin code and encryption password to access and the private keys in the paper wallet are encrypted which means that the coins in the wallet cannot be accessed without having both the private key and the encryption password. We also keep physical copies of the cold storage wallets at multiple locations.
That needs a small update in that the Trezor has been replaced with a Ledger. I would recommend anyone using Coinbase to read their ToS and search for the word "gambling".