I won't complain if that happens, although I prefer lower price and more BTC rather than higher price and lower BTC income, I think bitcoin price has much more room to grow than the hashrate does, I am almost sure that a few years later even very old gears of 100w/th and above will be profitable to mine with, by simply looking at the hashrate vs price, you can see how possible that is.

بالعكس تماما اخي انا اختلف معك في هده النقطة, اولا 200 نقطة عاد منها الكثير للاعضاء غير المحظورين, تانيا هدا العدد لايساوي شي مقابل ماتلقاه الاعضاء الاخرين وهوا قطرة في المحيط ان قمنا بمقارنة نقاط الجدارة للاعضاء الذي تم حضرتهم في الاقسام الاخرى, اتذكر فقط في مرحلة معينة العام الماضي عندما قام احد الاعضاء بانشاء script للبحث العشوائي عن النسخ واللصق كان الحظر يصل للالاف يوميا, الاف من نقاط الجدارة كانت تختفي كل يوم وهدا الامر طبيعي.


شخصيا لا اعتقد ان هدا حل, شخصيا لن اتوقف عن اعطاء نقاط الجدارة للاعضاء الجدد طالما انه منشوراتهم تستحق, من الافضل ان نخسر بعض النقاط على ان نظلم اعضاء صادقين, واعتقد انه لايجب ان تلوم نفسك على ماحدث فأنت كنت تقوم بواجبك تجاه القسم على اكمل وجه وهوا عدم التفريق بين الاعضاء في نقاط الجدارة, من مصلحتي الشخصية ان اقول لمصادر النقاط توقفو عن اعطاء نقاط جدارة للاعضاء الجدد واعطوها للاعضاء القدامة فقط, فهدا سيضمن لي نقاط جدارة اكتر ولكن هدا بذون شك سوف يسبب في احباط كل عضو جديد صادق لايحاول الغش.

وطبعا هده وجهة نظري, واثفق معك في باقي الكلام وكما قلت كل الاعضاء الذين قامو باعطاء نقاط جدارة للمحظورين لايجب ان تزعلو او تشعرو بالندم بالعكس تماما فلو كانت سياسة المنتدى تمنع هدا لكانت اوقفت امكانية اعطاء نقاط الجدارة للاعضاء المحظورين, ولكن تذكر اننا نعطي نقاط جدارة للمناشير وليس للاعضاء, المنشور الجيد يستحق نقاط جدارة بغض النظر هوية العضو.

بالتوفيق للجميع.

I am glad to be the first person to report the massive -1.2% drop in bitcoin mining difficulty. 


We had 20% drop in bitcoin price, and only 1.2% drop in diffiuclty, this has to do with the fact that difficulty doesn't adjust fast enouh, if we could keep the current price levels then I expect to us a 3-4% drop in difficulty for the next adjusment.

Current critical suppurt for BTC price is the 21weekly MA which is right at $9933, in the past couple of years everytime we closed below that we dipped another 20-30% which means the 7k levels, but let's wait and see, overall, things look pretty bearish for the short-term for makets mainly due to the U.S elections, post election IMO will be bullish for all markets.

This should keep difficulty at check, small drops of 1-2-3-4-5% all the way to after the elections is what I expect.

At this stage all fingers point to a bad PSU, however the kernel log is strange and incomplete, I would remove all 3 boards and keep only the control board to see if it gets to the line where it reports the control board status, I would also test a different LAN cable, of course all of this after having done a hard-reset on the miner and flashing another firmware version, I would also clean the PSU because there is a stange it's full of dust and gets hot real quick.

Were you running this on a lower than 200v socket?

اخي اوميقا تفضل بعمل ماتراه مناسب.. للاسف انا لا امتلك الوقت الكافي للتفاعل هده الفترة ولا اعتقد اني استطيع ان اقدم اي شي للمدونة الا لو احتاجت  لتمويل مادي..اما بخلاف ذلك اتمنى منك التصرف فيها بما تراه مناسب وشكرا جدا على مجهوداتك.

Based on how my friend described the buyer, he seems like a complete newbie, so it's very unlikely that he knows how to do anything aside from sending and receiving, but well, there is a chance that he is faking it, either ways, if he was lying then he lost no money if he was a careless newbie than sadly he lost about a thousand $ worth of BTC.




It indeed is, now I have more info on this matter, the buyer said he saw the transaction appears on his wallet for a few seconds and then it vanished, this adds more strength to the fact that there was a script doing all the work, and that was not on the blockchain.com wallet, so the hacker really knows how to get the job done, this is yet another reason why web-based wallets suck big time.

Of course, all of these assumptions are based on the fact that the buyer is telling the truth, for all we know, he could have those seeds imported somewhere else and he manually spent them since he knew when the transaction was going happen.

Ok, so what happened here is that the moment he receipt/hacker/script got the unconfirmed outputs, they immediately spent it to 1GpXLNYGfi7jWgZxn7hDaQs39VD59WYtvg and since both transactions are signed properly then they can be confirmed in the same block by the nodes.


This was my initial guess, I just thought there could be something that I don't know about and it wouldn't be fair to just tell him to ask the buyer to go figure.

It's a Blockchain wallet, so my guess is that someone else might have full access to his wallet.


Yup, I am aware of that, it's all about whether or not it's considered valid, what I initially thought is that this can't be done in the same block, but now after reading's comment and when I think about it, nothing is stopping them from sending raw transactions to spend unconfirmed outputs.



My friend is neither the sender nor the recipient, he is just trying to solve a dispute between two parties so he only knows as much as we all now know, both parties agreed that the buyer's address was > 1GpuDxXn9mYUf3fiMy4YpvTgx7AKUsZbbV , they also agree on the amount received which was 0.09xxBTC, the buyer says his wallet is still empty while the seller says the transaction to 1GpuDxXn9mYUf3fiMy4YpvTgx7AKUsZbbV was confirmed so he says "I should take my money and leave".


Yup seems like the only fair way to go about this, get the seller out of the equation, and start figuring out what went wrong with the buyer's wallet, since this is a shitty web-based wallet, many things could have gone wrong, so a lot of digging on the buyer's wallet needs to be done.

Anyway, I have gotten the answer, I will keep this topic open for further discussion, I am sure other members will come up with different theories on what could have gone wrong with the buyer's wallet.


Thank you all.

How would he be able to spend an input that hasn't been confirmed? won't the transaction be invalid at that point?


I don't know for sure, the recipient claims so.

perhaps I should put in more details, my friend was asked to solve a dispute between a buyer and a seller, the buyer is 1GpuDxXn9mYUf3fiMy4YpvTgx7AKUsZbbV, he paid in cash for 0.09 BTC, his wallet now shows empty, the seller has a proof of over 60 confirmation while the buyer "claims" not having received anything.

So long story short, my friend is waiting for me to tell him to whom the cash should be given since both parties denied ownership for the last receiving address 1GpXLNYGfi7jWgZxn7hDaQs39VD59WYtvg


It does matter in this particular situation, if the buyer said that was his address then there would have been no dispute, but I agree that in general, it doesn't matter.

Transaction > https://blockchair.com/bitcoin/address/1GpuDxXn9mYUf3fiMy4YpvTgx7AKUsZbbV


The recipient is



What they received in the transaction


was immediately sent to


in this transaction


The last address doesn't belong to the wallet which generated the first address.

Both transactions have the same number of confirmations!

According to my knowledge philipma1957 is the most experienced guy in the "quiet mining" thing, he makes super silent S9 mods that work as space heaters so my guess is that he must have stumpled upon the APW3+/APW7 fans, he is pretty active here and he should see this topic and respond, if not then maybe reach out to him via a PM.

You can also read this topic, OP talks about the PSU fans, but it doesn't seem like he got any good recommendations.

ان كان اعطاء نقاط جدارة لاصدقائك بدون سبب وجيه مثل منشور يستحق الجدارة ممنوع, فكيف الحال باعطاء نقاط لحساب اخر تملكه انت؟ نقاط الجدارة يجب ان تكون مسيلة بدرجة كبيرة وان تتحرك بين الحسابات بطريقة منطقية (لم اقل عادلة لان مفهوم العدل معقد).

انا لا اعلم ان كان هاؤولاء الاعضاء فعلا هم شخص واحد, ولكن ان صدق الخبر فهدا شيء محزن لان كل تلك الحسابات كانت نشطة هنا وتقدم محتوى جيد جدا, يعني انه لو نفس الشخص استعمل حساب واحد وقام بتطويره والعمل عليه لكان الان لديه عضوية جيدة ولكان راضي عن نفسه, انا اقوم بكل جهدي لكي لا ابخل علي القسم العربي بالنقاط بالرغم من اني لست مصدر نقاط جدارة, ولكني اريد دعم الاعضاء للنهوض بهدا القسم, وايضا لدينا 3 مصادر نقاط جدارة جميعهم يقومون بدورهم على اتم وجه, يوجد على الاقل 5 اعضاء جدد ترقو الى Senior وبضهم على Hero , الترقية هنا اسهل بكثير من معظم الاقسام الاخرى, لماذا التحايل؟؟


هل فعلا تم حظر الاخ Ulven ؟ شيء مؤسف للغاية صراحة, وان كان الخبر صحيح فهوا مزعج فهوا عضو فعال في القسم ويبدل الكثير من الجهد فيه.

لا اعتقد ان الحظر تم بناء على مخالفة القانون المتعلق بسرقة المتحوى من النسخ واللصق ولكن تم بناء على تبادل نقاط جدارة بين اكثر من حساب يتبع لنفس الشخص وهوا ايضا ممنوع في قوانين المنتدى, اما بخصوص "الالية" التي يمكن اتباعها لتفادي هده الاشياء فهنا شيء واحد يمكننا فعله وهوا "لاشي".

واجبنا كاعضاء ملتزمين بعدم التحايل على قوانين المنتدى هوا تطوير القسم العربي واضافة محتوى جيد له لكي يتسنى للاجيال التي تلينا من الاستفادة منه, اما مايفعله غيرنا فيجب الا يكون من مشاكلنا نظرا لاننا لا نتحكم في تصرفاتهم, انا لا ارى اي مبرر للغش وفتح اكثر من حساب وتبادل نقاط الجدارة بينها, خصوصا في هدا القسم تحديدا حيث ان كسب نقاط الجدارة ليس بالأمر المستحيل ولا حتى الصعب.

على العموم, اعتقد انه يجب ان يقوم شخص ما بانشاء موضوع يتحوي على قائمة الاعضاء المحضورين لكي نتوقف عن اعطائهم نقاط جدارة لان هدا سيبب فقدانها من التداول وتبقى في حسابتهم للأبد نظرا لان الاعضاء المحظورون يمكنهم استلام نقاط جدارة.

I have changed a dozen of them, but nothing for the purpose of noise reduction, I only change them when they fail, and quite honestly I can't tell if the new ones I got make less noise or not, but overall if you know the specs you can get a replacement maybe a delta fan of any other, judging the miner's fans which make a lot more noise than many other brands, and move less air, I am sure that you can find a better one, and since your miner is too quiet it means your PSU isn't putting a lot of work, so you might get away with less RPMs on the PSU fans.

The APW3++ uses a 6000RPM fan, the size is 6cm*6cm*2.5cm, I believe the cable length you going to need is about 20cm.

Bitcoin touched $9980 which is a -17% from the high of this week and just about 14.5% from the opening, we might see some recovery from here, but overall this is bad for miners who are mining at the edge of being profitable if we don't make a quick bounce I expect to see some of the hashrate leave tomorrow.

Current base is as follow


Not so many blocks left for this epoch, so I wouldn't expect a huge turnover in these numbers, maybe we wipe out the 3% we gained from the last difficulty adjustment although with only 508 blocks left to be mined that might be a bit hard to achieve.

مرحب بك في المنتدى, اضافة الى ماتم سرده من قبل الاخوة الافاضل اود ان ازيد عليه نقطة مهمة جدا  الا وهي ان هدا المنتدى ليس منتدى "ربحي" اي انه لايوجد مهام معينة تقوم بعملها لتتحصل على مقابل مادي من المنتدى, كل المدفوعات التي تأتي من خلال هدا المنتدى هوا مقابل خدمات يقدمها الاعضاء لبضعهم البعض حتى وان كان هدا العضو يمثل عملة او مشروع معين ويقوم بالدفع فهوا لا يتبع الادارة باي حال من الاحوال.

اذا الملخص هنا هوا انه ان كان هدفك الكسب فانا اعتقد انه قد يوجد امكان اخرى اسرع في الربح, الربح نوعان , ان كنت صياد فأنت تريد دخول البحر والخروج وبيع ماتملك في نفس اليوم وهدا غير متاح هنا, اما ان كنت مزارع فأنت تستمر في ارضك لسنوات قبل جني الارباح وهدا تماما مايحدث في المنتدى, يجب ان تبني سمعة حسنة, مشنورات ذو جودة وعلاقة جيدة مع الاعضاء, ومع الوقت سوف يحتاج شخصا ما لخدماتك ويقوم بالدفع لك, ومع هدا يجب ان لايكون هدا هدفك بل هدفك يكون الاستفادة الاكادمية والثنية بالدرجة الاولة.

بالتوفيق.

Use a pool the gives you the ability to create subaccounts, most importantly the pool should let you pick different wallets for different subgroups, a good example of a pool that does exactly that would be viabtc pool.


This can't be done on a pool level alone, not on a local level alone either, you will need a lot of work to get this done, here is an idea off the top of my head.

You create 5 subaccounts A, B, C, D, and  E, E will have the buffer hashrate, in the pool settings set a "low hashrate notification", this will send you an email once one of the main 4 accounts fall below the threshold you specify.

up to this point, everything can be done by you or any other person, the following will need a programmer to write a script which would intercept the email and then access the E miners on your local LAN and change the worked from Worker.E to worker.B.

Those 4 lines are easy to write and read but certainly are not easy to make, and I don't see how applicable it is, if I was you I would "force" my clients or whoever owns 4 accounts to accept my way of settling hashrate drops.

Say they get weekly payouts, every Saturday night you check the average weekly hashrate, account A has 100TH average > his credit = 0, account B average is 40th and he must get 50th so he has a credit of 10th.

Say he got 5 BTC for 40th, it means his balance is 1 BTC, now with this scenario, you must disable auto-withdrawal for account E (the buffer account) so that it always has a buffer balance and you don't have to send BTC from E's pool to E's wallet to B's wallet, you can easily manually withdraw 1 BTC from E's pool account to B's wallet and you are done for the week.

To sum up, if the hashrate you are trying to manage is small, aka the TH or the below 5-10ph then it isn't worth the efforts, to settle payments daily or hire someone to write a script for you and charge you a fortune.

I have seen S9s go for less than this price, as low as $30 with PSU, I think the fair price for the S7 LN is anywhere between 10-20$ if it's working perfectly and comes with the power supply.

eBay is a paradise of those mining gears sellers, they have a few outdated gears sitting in their garage, they put a crazy high price tag and wait for a newbie to fall for it, trust me, some people think all miners are equal and they all make money so no problem paying $100 for an old gear like the S7, but awareness is spreading and now we see fewer people fall for that which is good.

Well, that will be something, I already see a few issues beforehand from trust to money, will MicroBT pay these devs more money than what they already make? will they trust them not to release any parts of it? are the devs willing to go to China? 

A couple more obstacles are ahead, the most important one is the financial incentives for MicroBT/Bitmain, what is the motive to hire and pay these devs when people are paying a premium for gears that are subject to ROI in well over 1.5 years and come with their shitty firmware? motives are close to zero, business is going fine the way it is now.

With that being said, and as we have discussed in the difficulty thread, the more we advance in this technology, chip size alone won't be the all and end all of it, getting the last bit of your gear out through the firmware will be everybody's interest, at one point in the future everyone will want to have a firmware that can tune their gears to get the max benefits be it more hashrate or more efficiency, when that time comes, I don't see why these giants manufuturer couldn't use the help of people like Tas and Thierry.

Thanks Marc, it's great to know that I am special and you trust me.  


If they don't want custom firmware on their mining gears they should at least develop one that works as people need it to work, the fact that people use custom firmware and pay fees on top of that is clear evidence that these stock firmware suck big time, if they want to kick you guys out of the market all they have to do is make a firmware that does it's job the way it is supposed to, but I don't see that happening any time soon.

I don't fit under the "big clients" category by any means  , I also don't have that many MicroBT gears, although I plan to get rid of all Bitmain Asics and move to MicroBT, the recent price spike and the pandemic came in the way, my gears were supposed to be at least 30-40% MicroBT by now, but for now the numbers favor the fact that I don't sell/buy any gears and just mine on with what I have.

Having said that, once I migrate all the available power I have from Bitmain to MicroBT gears, I would love to try the custom firmware.