Burger King has partnered with Robinhood to give away Bitcoin, Ethereum, and Dogecoin to members of its Royal Perks loyalty program when they spend $5 on the restaurant’s app.

Most people, not surprisingly, will receive DOGE. Burger King says the prize pool will consist of 2 million Dogecoin, 200 Ether, and 20 Bitcoin. That puts the odds of receiving a Bitcoin at about one in 100,000.

Still, the chance to hop on the crypto express simply by grabbing a combo meal could be highly alluring for some.

To redeem the crypto prize, the recipient must have or open an account with Robinhood to claim it.

The promotion begins today and runs through Nov. 21 (or until the crypto supply is exhausted). Users are limited to one prize per day but can gather up to 21 through the course of the promotion. Prizes must be claimed by Dec. 17.

“As a brand, we are always looking for ways to reward our most loyal guests with exclusive offers that are exciting, unique, and culturally relevant,” the company said in a statement. “Cryptocurrency (crypto) has been a hot topic of conversation recently, but we know it can be difficult to understand. That’s why we wanted to bring crypto to our guests in a way that was accessible and digestible (literally and figuratively)—through our food.”

The chain, though, declined to say whether it would accept crypto as payment in the future.

It’s not Burger King’s first time dipping its toes in the crypto waters. In 2017 the chain launched its own cryptocurrency—called the “Whoppercoin”—in Russia. Technically still tradable, that crypto has been largely forgotten by investors, with no recent sales.