I decided to move our short dialog from bitcointalk to this place. My suggestion there was:
- " Why not to develop NH-resistant algorithm for difficulty computing ? For example, you can compute average hashrate during 1 week and one standard deviation for this period. If at some moment the network hashrate jumps over that standard deviation, the difficulty goes to the moon until the moment when the hashrate returns to the normal interval. "
The Dev replied:
- “… its tough to control/regulate such if you wana keep decentralization word in your blockchain.
NH can be protected only if natural hash rates grows. But believe well established blockchains too have to deal with this. Diff calculation algo is one of the most critical part of any blockchain and numerous research papers and algos have been put with their own pros and cons.
If as per your say if avg hashrate of one week is calculated then chain have to wait for almost another week to find next few blocks after NH user leaves. Also we are working to improve algo to tune better.
NH have cost attached and atm its not economically profitable to use Nicehash and get some DERO, its much cheaper to buy DERO on exchange. To all who are expecting better exchange, we are exploring that.”
My answer now:
- So, I see your point that in such a way we will create a “feedback system”, and the difficulty will rest too high after the NH user leaves. But why not to skip the period with abnormal hashrate from the computation of the average hashrate and one standard deviation ? In this case we can provide smooth changing of the difficulty of the network. The negative point is that someone could block the coins emission, but this will cost a lot of money for him. But I am not an expert in this topic, so I completely rely on your opinion. Thank you for your attention !