Bitcoin Falls 11% Unlisted Video

On Thursday, Bitcoin fell as much as 11%.
The drop comes after a report from BitMEX Research suggested a critical flaw called "double-spend" occurred in the bitcoin blockchain.
Double-spend is a highly feared scenario where a user is able to spend their same bitcoin more than once.
Business Insider reports a double-spend event has not been confirmed.
There have been mixed messages from BitMEX on the particular instance.