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The model and influencer launched her OnlyFans profile last month, announcing the news on social media, saying: "HAPPY 6/9!! MY ONLYFANS HAS OFFICIALLY LAUNCHED."
And it seems that the venture has already proven lucrative, as Kopf has apparently made a lot of money in her first two days on the content subscription platform alone.
Kopf revealed her earnings in a recent YouTube video from her Vlog Squad pal David Dobrik.
In the clip, he can be heard saying: "Corinna just started an OnlyFans. In 48 hours, how much money did you make?"
As her friends give her a drumroll, Kopf says: "In 48 hours, I made a little over a million dollars."
She adds: "And then I gambled to celebrate and won $30,000 (£22,000)."
Kopf then goes through some of the interactions she's had from fans, saying that one gave her a $100 (£72) tip, before she and Dobrik go outside to take a look at her 'brand new $400,000 (£290,000) Ferrari'.
Dobrik asks Kopf how much she's making a month now, to which she responds: "I don't want to say it!"
While Kopf didn't want to divulge her monthly takings, towards the end of last month - after just a couple of weeks on OnlyFans - she tweeted: "I don't care what anyone says, I made $165,000 (£142,000) on just one picture of my boobs."
Kopf has spoken out on her OnlyFans page about fans requesting more titillating content, simply saying they're free to leave if they don't like what they see.
Not every picture is going to be the craziest thing you've ever seen!! If you don't like my content here then unsubscribe! A lot of the s*** I've posted already would get me banned on IG and other things are just extra content for you to enjoy, so take it for what it is.
"For the people that have shown me nothing but love, thank you and I love you, kiss my booty cheeks."
In a later rant, she added: "F*** all of you who are so f***ing pushy and demanding me to post certain s***.
"I'll post what I want, when I want. If you don't like it, then leave!"