Step by step:
1. Register through this link.
2. Top Up
Top up $100 or more in assets and keep them until the next upcoming referral payment (maybe up to 30 days).
3. Earn BTC
You will get $10 in BTC directly into your BlockFi account.
Hightlights:
1. One of the largest crypto lending providers with an established reputation.
2. 1.5% cash back credit card (Now the U.S. only).
3. Offer services for large institutions.