By default, your "crypto back" rewards will convert into Bitcoin. You can adjust your settings at any time by heading to Earn > My Earnings > View details and clicking the Gear icon. You can select any of the following cryptocurrencies as a reward:
- Bitcoin (BTC)
- Ethereum (ETH)
- Cardano (ADA)
- Litecoin (LTC)
New cryptocurrencies are expected to be added in the future based on an extensive security and compliance review process.