I have constructed a new pool, but I am still having a look at what is really up. Testing the pool with some of my own miners now. The block explorer shows block from quite a while ago, so is out of date, but seems to be reporting the correct net hash rate.
Difficulty is quite high, so will have to toil on it for a while. Only putting 1GH in to see if we can get a block. Will report back on findings. If the chain checks out I will post pool URL.
Please keep us up to date!
https://mp3.markmine.io/ isn't working anymore, site has been stripped
