Fast-food chain Dunkin’ is giving out Bitcoin to its customers in South Korea through a series of promotions in partnership with local crypto exchange Bithumb.

Participants can receive Bitcoin “coupons” to redeem for free BTC by participating in promotions that are scheduled to run from July 26 to August 8, according to Dunkin’s South Korean website. The giveaways form part of the coffee chain’s partnership with South Korean cryptocurrency exchange Bithumb.

During the first promotion, customers that purchase a Bithumb Donut Pack will receive a Bitcoin coupon worth 5,000 won (roughly $3.50), a translated Dunkin’ promotional flier shows. In another promotion, Dunkin’ customers who spend more than 8,000 won can win up to 15,000 won ($10) worth of Bitcoin. Another promotion offers Bithumb users a chance to win a Dunkin’ mobile gift card.

Bitcoin coupons are redeemable on the Bithumb website until August 14, the promotion’s webpage shows. Customers must be 19 years or older to redeem the coupons and receive the Bitcoin.

It is unclear how many Dunkin’ stores in South Korea are participating in the promotions. The country hosts more than 900 Dunkin’ locations as of earlier this year.

Dunkin’ did not immediately respond to Decrypt’s request for comment.

Edited by Andrew Hayward