Proof Of Useful Work
Proof of Workを計算する際に有益な計算を行おうという試み
https://wiki.internetcomputer.org/wiki/Proof_of_Useful_Work#:~:text=Proof-of-useful-work,of%20very%20similar%2C%20standardized%20specification.
新しい素数鎖を計算するPoW：Primecoin
https://primecoin.io/
INPUT:OUTPUT
https://iohk.io/en/blog/posts/2022/08/16/introducing-ofelimos-a-proof-of-useful-work-consensus-protocol/