10-second video clip sold for $6.6 million

The video, titled, "CROSSROADS," by digital artist Beeple whose real name is Mike Winkelmann, was authenticated by blockchain, which serves as a digital signature to certify who owns it and that it is the original work.

It's a new type of digital asset - known as a non-fungible token (NFT) - that has exploded in popularity during the pandemic as enthusiasts and investors scramble to spend enormous sums of money on items that only exist online.

Blockchain technology allows the items to be publicly authenticated as one-of-a-kind, unlike traditional online objects which can be endlessly reproduced.