50 Cent forgot he had a stash of Bitcoin now worth $8m

50 Cent has discovered that he is a Bitcoin millionaire, thanks to some long-forgotten album sales.

In 2014, he released the album Animal Ambition and became the first artist to accept Bitcoin as payment.

The rapper received more than 700 Bitcoins under the deal, but then forgot about the cryptocurrency, according to celebrity news site TMZ.

The hoard is worth $7-$8m, although the currency's price volatility means that could change fast.

In 2014, one Bitcoin was equivalent to about $662, but was worth about $11,200 on Thursday according to Coindesk.

"Not bad for a kid from South Side, I'm so proud of me," 50 Cent - whose real name is Curtis Jackson - wrote on Instagram, confirming the news in a post that featured a screenshot of the TMZ article.

50 Cent also posted a picture of himself on Instagram surrounded by Bitcoins, with the caption: "A little bit coin anyone? LOL. l know l make you sick but excuse me I'm getting to the bag."