Elon Musk Twitter was shut down after he tweeted about Bitcoin—according to the billionaire himself. This is far from the first time a celebrity name promoted a cryptocurrency. But unlike other celebrity crypto promotions, Musk’s wasn’t a hack.

Here’s what Tesla’s billionaire founder said that got him blocked from Twitter.

“Wanna buy some Bitcoin?”

On October 22, Elon Musk tweeted out to 23 million followers: “Wanna buy some Bitcoin? 😉😉” He tagged @vincentes and musician and former girlfriend Grimes.

Along with a few emojis, Musk tweeted a picture of an anime girl wearing a Bitcoin-themed dress. Musk has a well-documented love of anime movies, including Hayao Miyazaki classic Princess Mononoke.

In fact, Musk was responding to @vincentes’ question, “Hey what’s happening w 2-factor auth for Tesla account?”

Twitter Blocks Musk Following his Bitcoin Tweet

A few hours later, Elon Musk updates his followers. “Twitter thought I got hacked & locked my account haha.” Not only did over 13,000 retweet Musk, but a few fans commented some Musk-themed anime art.

Why Would Twitter Block a Billionaire for Tweeting about Bitcoin?

This wouldn’t be the first time that a billionaire promoted cryptocurrency. But until now, most of these posts come from fake Twitter accounts advertizing cryptocurrency scams. Scammers have used fake accounts linked to Warren Buffet, John McAfee, Bill Gates, President Trump and even Musk himself in cryptocurrency scams.

A lot of these are “crypto giveaways.” In exchange for sending cryptocurrency to a specific address now, the impersonated celebrity promises to give more cryptocurrency back later.

When it comes to crypto, there are a lot of trolls and scammers. These types of scams are so common that there is actually blockchain software for stopping internet trolls.

Elon Musk’s Take on Bitcoin

Back in late 2017, Elon Musk publicly stated that he does not own any Bitcoin. Almost a year later, has the Tesla billionaire changed his tune when it comes to the world’s highest market cap cryptocurrency?

In February 2018, Musk clarified that he actually owns Bitcoin. Specifically, he owns 0.25 BTC that a friend gifted him. But supposedly Musk does not know where he stored it. Good thing for Musk, there is such a thing as crypto wallet recovery.