To receive your referral bonus:
Go to App settings in the Kraken mobile app to find your invite link.
Copy and share your invite link with your friends.
Your friend must use your invite link to create a new account on the Kraken mobile app and buy or sell crypto worth at least $100 USD within 30 days of signing up. As a reminder, buys and sells on Kraken Pro do not count toward the $100 USD trading amount.
More details:
The Kraken Referral Program is available in the United States (excluding Washington and New York), Canada, United Kingdom, Australia, and in some EU countries.
The friend you refer must reside in the same country as you.
To qualify for the referral bonus, the friend you refer must not have previously created a Kraken account before the account created with your invite link.
There is no limit to the number of friends you can refer, but there is a limit on the total amount of referral bonuses you can receive ($100 USD worth of bitcoin).