WikiLeaks founder Julian Assange claims his organization has made a 50,000 percent return on bitcoin after investing in the cryptocurrency in 2010 — and it's all thanks to the U.S. government.

In a tweet over the weekend, Assange posted a screenshot of bitcoin prices on July 18, 2010 and October 14, 2017 on industry website CoinDesk. In this period, the price of bitcoin went from $0.06 to around $5,814. This represents a 9,689,900 percent increase.

Assange, however, said that he has made a 50,000 percent return, presumably investing in bitcoin over the six-year period.

And the WikiLeaks founder said this was because the U.S. government forced payment companies like Visa and MasterCard to carry out "an illegal banking blockade" against his organization.

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In 2010, MasterCard blocked its products being used to pay WikiLeaks. Paypal also restricted the account used by WikiLeaks after it said the group has violated its policy.

Assange said that this is the reason WikiLeaks invested in bitcoin. The cryptocurrency allows anonymous payments and can be moved around the world easily. It is, however, very volatile.