فريق العملة هوا من يحدد سعر العملة فور صدورها, هناك طرق توزيع مختلفة ولكن في العادة تجد ان هناك مراحل بيع يكون البيع فها تدريجي والسعر يزيد في كل مرحلة , فتجد ال pre-sale ارخص من sale , وفور ادراج العملة لاي منصة يكون سعرها في العادة هوا سعر اخر بيع تم خارج المنصة وعندها يأخد منعطف جديد اما بالصعود او الهبوط, وبعدها يصبح عامل الطلب والعرض فقط ما يوثر على سعر العملة.

طبعا ان كنت تتسأئل لماذا يحصل عليها بعض الاشخاص بسعر اقل, هاؤولاء الاشخاص يأخدون الجزء الاكبر من المخاطرة, عند شرائك لعملة لايمكن بيعها ولاتعترف بها اي منصة ستكون اموالك رهينة لنجاح تلك العملة في الحصول على اضافة لاحد المنصات المهمة, ايضا بعض العملات تكون vested يعني لايمكنك بيعها الا بعد مرور وقت معين, بعض العملات تكون محجوزة لسنتين, ويكون مسموح لك ببيع جزء منها كل مدة, مثلا 10% كل 3 اشهر او هكدا.

The reason why I asked if these "bad" miners were located in the same area is simply to help you troubleshoot further, now that you answered, it's actually good news, at least we know there is a good chance that the problem isn't the miners themselves, to confirm this you have to take 1-2 two miners and put them elsewhere, see if they act any differently.

You should also try to reduce the fan speed on some of these miners to see if they would run any longer/better, if so happen that this rack directly faces the intake fans or has a small difference in reference to the airflow they can still can weird,  I would also check the PSU screws and make sure all hash boards are tightened, I would connect the bad miners to a different switch using different cables, I would also use different power cords.

Also in regards to checking the breaker and the wires, you need to check the voltage right before the miners stop hashing, if the wire is damaged it can cause a voltage drop, and these gears don't do well with low voltage, so what could be happening is that after loading the wire for 20-30 mins it gets warm, voltage drops, the PSU goes into protection mode and stops feeding the hash boards.

تم ارسال القيمة وهدا ال txid



تم ارسال القيمة وهدا ال txid


Khalid = 7
icy3 =  2
yhiaali= 2
ulven = 8

ارجو من الاخ خالد و icy3 ارسال عنواينهم.

شكرا.

I used to think that I need an AC to cool the miners down where I live, temps go over 40c in the summer, but I came to understand that sufficient airflow is more than enough, you could add an AC (if you don't care about the power bill) but without exhausting the hot air fast enough, you will always run into over temp issues.

I would love for that to happen, any non-Chinese manufacturer is welcome, not that I have anything against China, but the more the better, however, I wouldn't keep my hopes high, competing with Bitmain, MicroBT, Avalon and the rest of the giant Chinese manufacturer isn't easy by any means, we all know what happened to Obelisk, took them so long to build a miner, Inno made a much cheaper and a dozen times faster gear in little to no time.

If your sources are correct, I hope these guys will be able to compete in terms of price and efficiency.

No, it's legit, NotFuzzyWarm answered based on your question which is wrong, to begin with, your problem has nothing to do with the voltage, it's just hex code that is stored somewhere in the hash board, starting from the S9k series onwards, you can't just mix hash boards from different miners, every model will have like 2-4 different codes, usually labeled as 0,1,2,3, the kernel log will display that at the beginning, which is why you should paste the FULL kernel log so that we can help you further.

With that being said, since there is always a 25/33% chance that the mix will work, you don't simply assume your problem is just mixing the boards, there are many other things that can cause the problem you describe, so please post the kernel log and a screenshot of the miner status.

There go the "whys" of why we dropped, is it Janet or is it the Bitmex double-spend fud? if I had to agree on one of these it would be the chain split that was reported by Bitmex, many people thought someone "cracked bitcoin", I am sure even some large investors don't understand how bitcoin works and they probably bought that.

But using common sense, I am leaning more towards the fact that the drop is nothing but the result of a 13-week rally that had 0 corrections, we are far from all the moving averages in the world, and since 2010 bitcoin always dips 30-40% after it rallies 100-300%, nothing out of the ordinary is happening.


Some of them paid $400 for an old S9, I feel bad for them, but well, they have at least learned something.

---

Down from 10% to 1%, sorry phill, seems like I was right this time  , I suppose this is something that should make you more satisfied than being right about your prediction anyway.

Dude, you are you going to fry these expensive gears, each of these gears costs above $7000 to buy today, and you are torturing them.  


Both miners show PCB temps of 81 where the maximum temp of S19 is just 80, and one or more chips are at 96 degrees Cellius, they shouldn't be close to the max by any means, when the max temp is 95c you should start to worry when the approach 85c, you need better cooling, it seems like you are not exhausting enough hot air and it's going back to the miners, for starters, try 100% fan speed and see how it goes.

That's true, but not if you double-spend the same inputs on the new "longest chain", which is what happened with the transaction in the Bitmex study, it all depends on the node that you connect to if the node tells you the transaction is confirmed and you release the goods/services based on that confirmation, only to find out later that not only the transaction has gone missing, it actually never existed.

It's quite normal to see a double spend on a 0 confirmation transaction, some wallets made that pretty easy to do anyway, but to see that 1 confirmation and then the transaction disappears isn't something that happens every day, not even every year if I am not mistaken.


But Binance isn't just a random company, the majority of the volume of bitcoin trading happens on Binance, they have more than 100,000BTC in their cold wallets alone and they are the 3rd largest Bitcoin mining pool, it doesn't matter how you look at it, or if you like CZ or not ( I am on the same page as you are, I don't like this guy at all) Binance is a major player in the crypto industry and whatever standard they sit is probably going to spread faster than you think.


I think this is exactly what they do, ranochigo mentioned the 2 conf for withdrawal which is correct now that I have looked it up, but I know Binane needs only 1 confirmation for you to be able to trade that bitcoin to something else, I don't know how do they handle the situation if something goes wrong between the time your transaction gets 1 confirmation and the time when something bad happens.


On the forkmonitor.info it says:


How would they come to such a conclusion?


Probably someone, somewhere, keeps a copy of all those "forked" chains, maybe CK or Kano?

Many people argue that since the hashrate of bitcoin is incredibly huge, it's highly unlikely that anyone can double-spend a confirmed transaction, obtaining 51% of the hashrate just to double-spend also isn't economically realistic.

As a result, most people and exchanges started to request only a single confirmation, and that includes the top largest exchanges like Binance and the like, to be honest, I myself have always thought that 1 confirmation is often more than enough, but is this really the case?

Yesterday there was a chain split at block 666833, Slushpool orphaned F2pool's block and made all of its transactions invalid, I wonder, how many exchanges or/and people were effected by this?

BitMex Research wrote about a successful double-spend which happened in block 666833


More details on the double-spend can be found here.

Such incidents are unlikely to happen, but they can happen, which also questions the ability of blockchain to be used for day by day payments without a second layer of some sort, even with an unlimited blocksize, imagine Starbucks telling you that the coffee you paid for was "orphaned" and you need to make a new transaction or return the coffee.

What are everybody's thoughts on this?

يوجد منصة twetch فهي مبنية على بلوك تشين لعملة للاسف معظم الناس لاحيبونها وهي بتكوين SV , هده المنصة هي شبيهة جدا لتويتر ولكن الفرق ان كل البيانات مخزنة على البلوك تشين, يوجد الكثير من التفاصيل حول طريقة عمل هده المنصة كنت قد قرأت شرح مفصل عنها ولكن نظرا لعدم اهتمامي فلقد نسيت معظم التفاصيل, يمكن لمن هوا مهتم بالحبث عنها.

بالمجمل نعم الفكرة قابلة للتبطيق, ولكن تبقا التكلفة هي المشكلة الرئيسية في كل شي لامركزي.

The Sdcard will flash the recovery firmware, not the firmware which the miner came with, it's impossible to know which firmware the miner had before you flashed it now that you flashed it, only you or the person you bought it from could know.

Every batch comes with a different firmware version, so you can't know which is which, what you can do, however, is select one from the list here https://service.bitmain.com/support/download?product=Antminer%20S9 , you want to avoid every firmware from 2019-08-19   onward if you want SSH enabled and if you plan on migrating at later times.

Keep in mind that the Sdcard recover files will most likely install an old firmware with no Asicboost enabled.

Some miners don't like to be run in cold weather, I have seen many issues like this where people had to point the hot exhausted air of some miner to another miner that doesn't like "too low temps", your miner's fans are at 97% and seems like you have that on purpose, could you drop it to 50% or just auto and see how it goes? I mean you would know better how to troubleshoot the low temps but just know it's not uncommon for some gears to stop hashing when they get too cold.

I do agree, after a second thought, I just remembered that the S19 have large heatsinks that cover more than one chip and it's tightened with some screws, so it's unlikely. but still, one bad chip can cause a mess in these hash boards, so I would still do the board by board troubleshooting if they miner still acts weird even after you move it to a new location.

Just because you changed your network settings to class A, it doesn't mean the infrastructure can handle all the traffic, this why some routers/switches cost 10x the price of another router/switch, but well since the miners completely shut down, I would rule out the network thing altogether.

I would like to hear more explanation on the "shut-down / turn off f" part, does the PSU itself shut down and its fan stop spinning or does the PSU shut down its main rail and keep the 12v running so the miner's fan and control board work but the hashboards don't?

Since you mentioned that you changed the control board and PSU, what I would do is move one of the bad miners to another rack, just to ensure that this isn't an electricity-related issue, if it is not, then chances are one or some of these boards have a loose heatsink which loses contact with the chip when the mine gets warm, this is very common with the 17 series and could be with the 19 series too since they gears are new, we don't have much info about them, to troubleshoot that you will need to run the miners with 1 board at the time to figure out which board/boards are causing the problem.

Still Buying.

نعم صحيح هده الاحصائية هي لاجمالي المنشورات, لقد ركزت نشاطي العام الماضي على القسم العربي, ولكن لم اتوقع ان اصل الى 600 منشور, اشعر بالرضى صراحة, حتى وان كانت نصف منشورات بدون فائدة فعلى الاقل شاركت ب 300 منشور ذو فائدة,  اود ان اشكر كل الاعضاء النشطين الذين يسعون لتقديم الافضل لهدا القسم, ونتمنى من الاعضاء القدامى الذين كانو نشطين في السابق العودة للقسم, واخص بالذكر الاخ hugeblack و SyGambler.
 

This is because when you point your miner to nicehash - you are subject to mine all coins that are based on SHA256, some of those will have an extremely low difficulty, you miner may even solve a dozen blocks in a few hours, some pools aren't so "hash rental friendly" so they will reject/discard many shares, there is a truckload of reasons on why the miner status can be so strange while mining to nicehash, this is why you should always mine to a BITCOIN pool while you are testing your miner, and even after that if you want my opinion.

What makes you think the temp sensor is in that area of the hash board? it's very unlikely, most hash boards come with more than 1 temp sensor (usually 4 of them), and they are located near the chips around the 4 corners to give an accurate reading across the whole board, and they are too small to be found, you need an answer from someone who personally has the same miner and has changed those temp sensors, which is not likely to happen, so I would just contact INNO support and request it from them.

What do these 8 miners have in common? are they on the same breaker? switch? rack? when more than 1 miner acts the same it's usually an outside cause.


Miners turn-off or reboot for many reasons, heat is the most common, if the miner's temps are fine it could be PSU, if the PSU is dirty or isn't getting enough air flow it i will stop, also if the voltage goes out of the 200-240v range it can trigger protection mode.

The good news is here

All three hash boards are in good shape, finding the complete asic count in the first trial is a good sign.

Since you have 250 of these, I don't think I should be telling you this, but you sure your router/switch can handle all the traffic? that could also be the reason why.