Comment by QML

You don't own Bitcoin if you don't control the keys. If you read the Coinbase ToS,

> Coinbase securely stores all Digital Currency private keys in our control in a combination of online and offline storage.

And if you read the whole thing,

> supported Digital Currency

is mentioned multiple times.

[1] https://www.coinbase.com/legal/user_agreement?locale=en-US#1....