This is an educational series that discusses bitcoin mining and Satoshi Nakamoto.
They are teaching about the socio-economic impact of crypto and in order to teach people how to understand bitcoin MINING, they have hidden a private key to 1 bitcoin in the video series.
You have to watch all 10 of them to figure out where the private key is hidden. The idea is to incentivize people to learn what a private key looks like so they can understand bitcoin better.
This is the first video of the series:
https://youtu.be/YMl3-AfBBvs