Now, regarding all the tracking withholding work I've been doing, here's an update on it:
Firstly, there's a bunch of miners in the subnet 91.218.B.* (B=8-11) that are running hardware that doesn't produce blocks.
Try 'whois 91.218.8.0'
They know it also, since they've changed around their settings, email addresses, swapped to address accounts, and even stopped mining here.
I've emailed them and got no reply.
The main account that alerted me to the problem was the username "foma" that is certainly withholding.
foma | 53.05G | 693,740 | 11 | 1.02G | 1.99G | 1.32G
That says: submitted 53G diff of shares, ~690K shares, 11 were over 1G diff, smallest over 1G was 1.02G, biggest over 1G was 1.99G (avg over 1G = 1.32G)
1.99/53.05 = 3.8% luck or 53.05/1.99 = 2666% Diff ... yeah way too high ... 1000% is a good indicator that something is almost certainly wrong.
Now of course there's the actual best share number 1.99G which is less than 2^31 - so it's hardware that wont produce a block or even a share over 2^31
Their total mining since the first account (foma) was created on 19-Jan has been 52.05339 BTC
The total I've held back (over the past ~week) is: 5.96578576 BTC (of that ~52 BTC)
So they've made ~46BTC mining while withholding since January.
During that time the pool luck has been ~110%, and their mining has been very roughly 0.94% of the pool total.
If you happen to know anyone on that subnet in Russia, let them know your dissatisfaction with their mining and the fact they've been taking BTC from us without the possibility of producing a block for the pool (which they know)
--
There's a second one also.
His statistics are extremely suspect for a similar, but not exactly the same reason.
His account name is saradis (plus others) ... who happens to match an account mentioned in the BCMonster pool thread ... I'll link them this post
(I have already told them and Johnny about foma)
It's a smaller account and I need to spend more time on analysing it.
The luck is below 9% (above 1100% diff) the max share is below 2^32 (not 2^31)
I'll post more details later.
--
There are 2 more accounts that I put on hold, that I have since let out of jail.
I'll not say who they are since it would appear I jumped the gun on them and they are not guilty.
One was by association of being in a subnet related to 'foma'.
They've not lost anything, just didn't get some payouts that will be in their balance until they either ask for them or I get around to sending out dust and unpaid balances ... some time in the future ... in a galaxy far far away.
... and that's IMO the best thing about how I'm dealing with this, any payment that I hold back isn't lost, if they turn out to not be guilty of withholding.
(and as I said before any amount like the ~6BTC above that I do hold and they are withholding, I'll later distribute to the payout that should have got it, once I've setup that sort of thing to work with the pool without having to manually do it)
