Rendering a movie is not suitable as a proof of work function. It's probably very difficult to design a mathematical framework to verify that you really rendere

Rendering a movie is not suitable as a proof of work function. It's probably very difficult to design a mathematical framework to verify that you really rendered the movie and not just send garbage back in exchange for coins. At the moment most Coins use either one or multiple hashing functions¹ or prime chains² as proof of work system³. 1: https://en.wikipedia.org/wiki/Hashcash https://en.wikipedia.org/wiki/Hashcash 2: https://en.wikipedia.org/wiki/Primecoin#Proof-of-work_system https://en.wikipedia.org/wiki/Primecoin#Proof-of-work_system 3: https://en.wikipedia.org/wiki/Proof-of-work_system https://en.wikipedia.org/wiki/Proof-of-work_system