Comment by z3c0

Well, this list of known PoUW might be of interest: https://www.sciencedirect.com/science/article/pii/S209672092...

While they don't have that many in the wild, the number of implementations it lists is still more than I expected. There's also the Monero 51% takeover, which was purportedly done using a PoUW technique to garner more hashing power.

https://qubic.org/blog-detail/historic-takeover-complete-qub...