I apologize in advance for posting here -- obviously this isn't a very efficient section for this. Although I've been involved in the scene for years, I just recently registered here, so I can't post anywhere relevant. I know plenty of people in the Megacoin community, in addition to casual holders and/or multipool miners, are in a similar position as me. I'd appreciate it if somebody could link to this post from the main Megacoin thread.
Since Megacoin halved early yesterday (250 -> 125 coins / block), there has been a massive drop in hash rate (obviously -- I'm sure this came as no surprise to anybody.) Regardless, although I backed off some of my miners, I continued to mine Megacoin using a significant portion of my GPU farm regardless simply to move along the difficulty adjustment more quickly and help ease the transition into the updated reward size after this second halving. You'd have a hard time finding a less profitable coin to mine at the time, but, being a fan of Megacoin, I figured I would take one for the team.
I watched the hash rate fall from 1GH/s to less than 30MH/s and I'm now officially confused by the difficulty adjustments. The minimal change on the first few adjustments I understood...as there was still a carryover of the high hash rate factored in. However, with the difficulty adjustment taking place after every 10 blocks, I'm not sure why the difficulty just went up on the last adjustment! Virtually nobody is mining this coin and we're now 180 blocks into the halved reward. The average hash rate over the past 24 hours is the lowest it has been in weeks...and the current hash rate is the lowest I have ever seen it. If I pull my miners off of Megacoin, the hash rate will likely drop to less than 10 MH/s...and that drop could be just enough to scare off anybody left mining this coin. If I walk away, it could potentially kill Megacoin depending on how long it's going to take to get the difficulty where it belongs. This is ridiculous considering this was one of the hottest coins out there for weeks leading up to this situation.
I guess my main question is: how is the difficulty adjustment being calculated? Is the formula available somewhere? I can't waste power and hash power on this for everybody if it's going to drag on for months -- I'd have to accept the demise of Megacoin at that point (unless somebody else steps up to the plate.) You would assume that a coin designed to halve so often in the initial stages would have a difficulty formula designed for the certain drop in hash rate after each halving. 10 blocks is great...but what stats are being used when it adjusts? I think most would agree this is an obvious flaw in the design of this coin (especially with all of the altcoins out there right now -- you have to be pretty dedicated to continue to mine it like I am...and even I'm losing faith here.)
I have been pumping away at 33-35 MH/sec for the past 36+ hours and have missed out on a ton of profit because of it (I have found 22 blocks in that span -- about $15USD based on current market value...or roughly 1/3 of what it will cost me in power.) Sure it's possible I've just had really bad luck...but even if I found every block it would barely be worth it! The real issue here is the difficulty adjustment formula -- it doesn't account for an impatient user-base with plenty of options. I'm beginning to grow concerned that the panic-sellers on Cryptsy I was making fun of just 24 hours ago might have made the right decisions. This could literally kill this coin -- there are too many alternatives out there and people have a short memory when it comes to this stuff -- I'm one of the few people willing to throw away hundreds of dollars just to keep this coin moving along. The reward has halved, the market value per coin has halved, and yet here we are, 36 hours later, seeing the difficulty adjust improperly. I think the formula needs to be changed or at least explained more clearly.
I'm giving this 12 more hours and if I haven't received a clear explanation and the difficulty remains way too high (as it currently is), I'm backing off my remaining hash power -- there really is no other option. At this rate, that could mean nobody will be mining Megacoin for months (if the coin even survives.) Everybody is upset about this...and I've just been casually riding it out doing what I can to help but I'd like to ensure that there is light at the end of the tunnel and make sure everybody is in the loop.
a halve that big would have drawn off miners no matter what. megacoin is a good coin, but to encourage mining, coins should do a 10% or 25% cut. good luck though!