Up to 1 BTC also includes 0.0002 BTC. It's pretty scammy, but then Robinhood is kind of notorious.

Seems like their target market is sensitive to betting/gambling prompts.

Presumably the reward amount is random with a few people getting dramatically more than everyone else. As if you got an entry into a lottery as a reward.

And they select the winner of the 1BTC reward as an influencer with a lot of followers for a great get rich quick scheme advertising...

They did this strategy with stock, maybe they still do. You got a random share that could potentially be Microsoft or Apple or what not and you could earn more via successful referrals. I ended up getting some random pharmaceutical company whose name eludes me but it hovered around $5 the entire time I had it. I think it peaked at 8-9 once even, it was quite exciting for a neophyte like I was then.

Key words: “up to”

You can sell one egg with up to a million dollars.