BlockFi has been trying out a lot of different promotions, so something better will probably come along soon [I think the best we've seen percentage-wise was a $100 bonus on a $200 deposit]. 2020-07-27: The BlockFi referral offer is now $20 in BTC to new signups with a $500 deposit (and $50 to the referrer) [through 2020-08-14].
The card released in 2021 and will be rolled out to U.S. residents in a limited number of states. Also, BlockFi is currently offering bonuses in BTC for using its platform. Deposit $100 and you ...