I had proposed that Doc make per user CDF available on the Bitminer site. I don't think this is the whole answer, but I think it would be a start to building a systematic approach to the block withholding threat. The good doctor can explain why he didn't like the idea if he's so inclined.
So, anyone who experiences negative variance will be accused of being
witches block withholders? I see that working well. Given recent history, about 8% of the pool would be so accused. If you keep kicking off the lowest performing 8% of the pool it wont be long until you have just one miner left.
Actually they were well past 95% before bailing out.
95% confidence is the level generally accepted as statistically significant in industry. Billion dollar decisions are made off 95% confidence.
All I suggested is that his payments should be withheld until we establish what is going on. Now he's gone.
So if you want to nitpick, I'm 95% confident he cheated all the members of this pool out of around $50k.