As of right now, Coinbase does not offer RBN for buying and selling. However, this could change in the future. RBN is a decentralized cryptocurrency that is built on the Ethereum blockchain. It is designed to be used as a global reserve currency.
The RBN token is used to stabilize the value of other tokens in the ecosystem. The RBN token is also used to pay fees and rewards to users who provide liquidity to the system.