Hello everyone, I'm back.

I started processing unexchanged balances and was able to recover ~17 BTC mined in 2015 and stuck since then. They were manually exchanged and paid out earlier in January in few batches. Since beginning of the year until yesterday we mined ~98 BTC but we paid out ~115 BTC. The additional ~17 BTC were recovered unexchanged balances.

I'll be reviewing remaining unexchanged balances after the weekend, but preliminary checks show that most of what's left are orphaned blocks from 2014 (~29.4 BTC) and 2015 (~12.7 BTC). These were crazy days of altcoins with dozens of altcoins popping up and dying every month and their blockchains were forking like crazy sometimes. In cases of forks which were not resolved quickly, but were having competing blockchains living concurrently for dozens or even hundreds of blocks, our software didn't zero-ed blocks which it thought to be orphaned (mined on the wrong chain) but left them for manual review, just in case. I am going to manually check all these remaining chains and correct their statuses to orphaned (worth zero). Of course if any of them were not really orphaned, they will be exchanged manually and paid out as were the recovered blocks earlier in January.

Overall, I estimate there will be ~42 BTC unexchanged balances corrected to 0 BTC. This is only an accounting loss. As I explained before, these blocks were not correctly mined blocks and were wrongly marked as unexchanged in the database (while they should be marked as orphaned). We already did a similar correction of post-fork orphans in 2014 when we wrote off ~19 BTC. In summary, these total ~61 BTC written off now and then, in the entire CleverMining history, make only 0.15% of our total 39,271 BTC paid out in the entire history. In reality they make approximately no more than 0.03% of entire hashrate, because when such forks happened, post-fork blocks difficulty was very low and we instantly mined dozens of worthless blocks (but theoretically worth 300-1000% profitability) before our software switched off from the forked coin. So in reality, much less than 0.15% hashrate was wasted on this, I estimate it at 0.03%. This is a cost of running a multipool - the more altcoins, the more forks and you sometimes lose a 0.01% here or there due to forks. My fault was to leave these blocks unchecked for such a long time instead of deal with them instantly.

After this accounting correction will be done, I will be adding some new coins (and re-adding previously disabled coins) in the next week to improve current results. The pool currently does not suffer any issues and I encourage everyone who mined here before but stopped to switch back to CleverMining.

If anyone has any unresolved issue, unanswered question or needs any support, please PM me and I'll try to help!