I know a guy who runs something similar, a marketplace where people can buy syndication rights (say, you run a rural TV station and want to buy rights to broadcast _Saved By the Bell_ or something). The whole thing is based on blockchain. It's doing extremely well, contracts and negotiations that used to take weeks can now be done in seconds.

There's no cryptocurrency angle, which I believe means that there's no gross energy expenditure, although I'm not an expert and never asked.