are you ready for today's teaser? go on, then! right — what does this penguin, this building in iceland, a huge digital artwork and this slamming basketball block all have in common? ah, our most loyal viewers might know! yes, they will. they've all turned up in our attempts to explain the blockchain — the buzzword of the decade, the things that every business needs. does it really? no, but go with me. and the thing that's currently burning through more electricity than the country of argentina as people use blockchain technology to try and get rich on crypto currency. so the blockchain is a way of storing ownership records. it can prove that you own a bitcoin, a house or even a video clip. that proof is a unique token that is non—changeable, non—fungible — it is a non—fungible token, or nft. personally, i've always been sceptical of whether nfts