Snippet from terms (link: "1. Create an account at . 2. Within one year (365 days) of creating your account, you must: Add a payment method to your account AND Buy (any) cryptocurrency on Coinbase 3. Once you create an account and purchase cryptocurrency, you'll receive the amount and type of cryptocurrency corresponding to the promotional code redeemed in your Coinbase balance within 48 hours. The amount and type of cryptocurrency is displayed at the time of sign up and redemption of a valid promotional code."