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3301  Bitcoin / Pools / Re: ADVICE PLEASE -Which pool is best suited for miners not running 24/7? on: October 29, 2020, 06:06:10 PM
You will need to use a PPS pool for this type of mining, any decent PPS+ will solve your problem, whenever it's online, every share you submit counts even if the pool doesn't find any blocks, of course, your "potential" profit will also be less and fees on PPS pools are higher, anywhere from 2.5% to 4%.

Viabtc > is good but fees are high 4%
Binance pool > sucks
Antpool is > terrible
F2pool > has the lowest fees IIRC it's 2.5%
 
There is also Sigmapool which is fairly new and also has a fee of 2.5% if I am not mistaken.

Most known PPS+/FPPS pools are okay in general, they differ in the small details and it's more of a personal preference, so try whichever one you feel comfortable with.
3302  Bitcoin / Mining support / Re: T17/S17 malfunction: cases, solutions, remedies, RMA history on: October 29, 2020, 05:11:52 PM
I think Wndsnb is correct, this doesn't seem anything like a chip or even a diode, it's just a 10*3mm piece of copper connected to "copper 27" as shown in the image:



Here is the repair manual from Zeusbtc for S17+ https://drive.google.com/uc?id=1TfNMnpEFxEGMHbTr3lmy2-9Ry7XzlgP2&export=download , it has all the pinouts and details about how that hashboard actually works, perhabs someone who understands electronics well enough can help you further (I think NotfuzzyWarm is your guy).

I am also interested to know what happened here, that piece does indeed look burnt/shorted, maybe too much current passed in there?
3303  Bitcoin / Mining speculation / Re: It is 2020 time for a new diff thread. on: October 29, 2020, 04:22:47 PM
We are going back to July's difficulty level, which was a few months into the rainy season in China, this could suggest that there hasn't been many S19/S19 pros out there, and the main cause for the recent difficulty spikes was the old gears coming back online in China, I think that is accountable for at least 50% of the difficulty increments, anyway 13% drop is NO joke.

To bull run guys hashrate drops like these tend to drag prices downward. As they allow a miner to sell more coin since they will earn more coin.

Some would argue that the opposite is correct because more profit = less pressure on miners = fewer coins being sold, my take on this is a bit neutral because after all, newly mined coins are really nothing but a small percentage of the circulation supply, looking at the daily trade volume of BTC gives you a clearer vision on what I am trying to explain.
3304  Local / العربية (Arabic) / Re: مسابقة Chipmixer 6 لربح البتكوين! on: October 29, 2020, 01:34:31 AM
هذا عنوان البيتكوين الخاص بي كما طلبت أخي ميكي :
Code:
bc1q9tdw3ermkp8ez576hf4dmgzhzaun2aa0k8cdjt

تم تحويل مبلغ 0.01 بتكوين لهدا العنوان, مبروك اخي وهدا txid

Code:
cb251340dd3d59d7f09cdd3660ec6e2c20e98cb849ffabca97ddfeb46cfd40ce

المسابقة كانت مفيدة لجميع المشاركين وكذلك للقسم العربي بشكل عام ولا أعتقد أن أحد خرج خاسر من هذه المسابقة بل الكل رابح والجميع استفاد إن شاء الله.

احسنت اخي يحى, المهم ان الجميع استفاد وجميعنا تعلمنا اشياء جديدة, والمشاركين كسبو المعرفة وتعلمو انشاء الفيديوات وهدا امر مهم جدا, واعتقد التدقيق في محتوى الفيديوات سيفتح مجال للنقاش المفيد, وانا مؤمن ان استخدام المكسر سيكون امر ضروري جدا في المستقبل عند انتشار البتكوين على نطاق اوسع, نحن العرب سنكون اكثر حاجة من غيرنا لاخفاء اثر اموالنا عن حكامنا المستبدين وجماعة "من اين لك هدا", اعتقد ان عدم انتشار البتكوين على نطاق واسع هوا السبب الوحيد  الذى يجعلنا نشعر بالامان, فور بدء بسط قبضة الحكومات على مستخدمي البتكوين ستكون الحاجة لاستخدام المكسر امس من اي وقت اخر لذلك تعلم استخدامها من الان هوا امر مفيد جدا لاي شخص يخطط لان يستمر في هدا المجال في المستقبل.
3305  Local / العربية (Arabic) / Re: مسابقة Chipmixer 6 لربح البتكوين! on: October 28, 2020, 09:38:48 PM
بعد اذنك اخي ميكي بما ان النتيجة حددت، ساقوم في وقت لاحق باستغلال هذا الموضوع لمناقشة بعض النقاط التي ذكرت في الفيديوهات و تستحق التدقيق او نقاش اعمق.
لم ارغب في القيام بذلك سابقا حتى لا اؤثر على التصويت  Smiley

تفضل اخي, بكل تأكيد, ايضا يوجد بعض الاخطاء في الشروحات, التي تحتاج المناقشة والتصحيح, ايضا اتمنى من الاخ coupable تقصير الفيديو فهوا طويل جدا ويمكن اختصار المضمون في نصف الوقت, كنت اتمنى منك اخي خالد ان يكون الفيديو بالصوت بدلا من الكتابة لان هده كانت  (في اعتقادي) نقطة ضعفك الوحيدة.

يوجد ايضا بعض الملاحظات بالنسبة للمشاركين الاخرين, سوف نتطرق اليها مع الوقت لنستفيد جميعا منها.

شكرا لكم جميعا.

شكرا لك اخ ميكي و لكل من صوت لي. لقد استفدت كثيرا من هذه المسابقة بان تعلمت صنع فيدوات و تقييم مهاراتي بشرح المعلومات. بتشجيع منكم فأنا أنوي مواصلة صنع فيديوات لمواضيع اخرى ليس بها شروحات كثيرة. طبعا جميع الاخرى جيدة و اتمنى من المشاركين الاخرين مواصلة صنع محتوى تعليمي و نشره على اليوتيوب لأن المجتمع العربي بحاجة الى ذلك حقا. المسابقة كانت ثرية برأيي رغم قلة المشاركين و اتمنى فعلا ان تتكرر.
هذا عنوان البيتكوين الخاص بي كما طلبت أخي ميكي :
Code:
bc1q9tdw3ermkp8ez576hf4dmgzhzaun2aa0k8cdjt

شكرا اخي على مجهوداتك الرائعة, ومبروك عليك الجائزة, سأقوم بتحويل المبلغ بعد قليل او غدا كاقصى تقدير بعون الله.

3306  Local / العربية (Arabic) / Re: مسابقة Chipmixer 6 لربح البتكوين! on: October 28, 2020, 08:22:19 PM
حسننا لقت تلقيت التصويت من الاعضاء الذي تم استشارتهم, والنتائج متقاربة جدا, والفائز هوا الاخ coupable

للامانة قمت بسؤال 5 اعضاء اثق في تقيماتهم, وكانت النتيجة 2 للاخ coupable وباقي الاصوات ال 3 موزعة بين المتسابقين الاخرين بالتساوي اي ان كل شخص تحصل على صوت , الجميع واجه صعوبة في انتقاء المتسابق الذي صوت له لان كل المشاركات كانت ممتازة والفرق كان فقط في التفاصيل الدقيقة جدا.

اتمنى ان يكون الجميع قد استفاد من هده المسابقة,  واشكر جميع المشاركين على المجهود الرائع, وايضا اشكر الاعضاء الذين استجابو لدعوتي للتصويت عبر الرسائل الخاصة وكانو في الموعد, اتمنى ان لا اكون قصرت معكم.

وطبعا! هده لن تكون اخر مسابقة بعون الله.

شكرا.


coupable ارجو وضع عنوان بتكوين لتلقي الجائزة هنا.
3307  Bitcoin / Mining speculation / Re: It is 2020 time for a new diff thread. on: October 28, 2020, 08:00:47 PM
From a non-miner perspective, the adjustments to difficulty do not seem to be very great, significant or material, even if miners are reporting on the ground that these kinds of adjustments have a lot of meaningful impact on their own profitability - coupled with short-term UPpity BTC price moves?

The profitability margin in mining is very tiny, 5% in either direction makes all the difference between winning and losing, thousands of mining gears shut-down with a tiny increase in difficulty because their gears become no longer profitable.

One more thing is that a difficulty drop of 5% isn't just 5% more profit, it could be a lot more than that, and here is the math the most people aren't aware of:

Let's take the average miner who pays 5 cents per Khw and see how the next 10% drop in difficulty will make him A LOT more profitable.

Currently, T17 makes  $4.53, pays $3.02 for power and NET profit is $1.51

With a 10% drop (ignoring price factor since it can go either way) it will make $4.98, pays the same $3.02 for power, and nets $1.96 in profit which isn't just 10% more profit by any means, it's almost 30% more net profit ($1.51 vs 1.96$)

So a -5% in difficulty isn't just 5% more BTC and it gets even better for the guys who pay 6-7 cents, even much better for those who have less efficient gears than the T17.
3308  Bitcoin / Mining support / Re: T17/S17 malfunction: cases, solutions, remedies, RMA history on: October 28, 2020, 02:22:14 PM
Your post is so good, I spent all my left merit on it.  Grin

Started work on the 1st S17 from my host. 2 hashboards showing 0 chips. Turns out both of them have heatsinks that are misaligned enough to short to the adjacent row.

After moving this heatsink back into position, this board comes up and identifies all chips, but the test fixture is showing a couple of bad chips so it looks like I'll need to replace a few.

Make sure you measure the voltage/resistance of the potential bad chips before replacing them, I have a reference for the voltage/resistance range but only for S9, so you will have to ask ZeusBtc for the reference, you do need the reference so if they don't have it, then get them from another working board, keep in mind that different regions of chips have different normal range, hard to tell which is which unless you can compare it against something else.

Quote
Also, just another thing I noticed with both these hashboards was that there were insect wings (looked like moth wings) blocking a few of the input side of the heatsinks. Could be what caused some chips to overheat enough for the heatsinks to slip.

Not sure about the wings, but the majority of the boards I had on these 17 series gears were clean as brand new, on the other hand, some boards were pretty dirty and were hashing without an issue, these miners are badly built and that's all about it, even if the heatsink was blocked from dirt, it should be able to handle the max-safety-temp and the miner would shut-down before temps are higher than what that paste/solder can handle, but that isn't the case (sadly).

Please keep us updated.
3309  Bitcoin / Mining / Re: Learn from my mistake (load balancing) on: October 28, 2020, 01:37:30 PM
Hi, I confirm, in France, we also have this kind of cable, because in industrial installations, 99% of the equipment is simply 3p + T, so have never used the neutral, except for some application like computer and lights, for example, on my site we use about 250KW per hour, but only 20kw max in 220v ...

I believe the standards we have here are french, so that makes sense, but if you are not using a neutral how are you getting 220v? suing 3P will give you 380V which isn't suitable for mining operations.

Quote
Regarding the circuit breaker which burned, I wouldn't say a load imbalance, (although it could be present), but I would rather say a badly tightened terminal block!

The root cause was that load imbalance, the breaker is larger than what the cables can handle ( a terrible set-up) so the only safety measurement I have is by perfectly balancing the load on each phase so that all 3 phases stay within their limits and the N phase stays as close to 0 amps as possible (impossible to get it down to 0 unless 100% of the load comes from 3P (380v) machines.

Anyway, the problem was solved, and I hope to never face it again.
3310  Bitcoin / Mining speculation / Re: It is 2020 time for a new diff thread. on: October 27, 2020, 11:07:00 PM
I think the majority of the first S19 batches are already online and have been for a month or so. I could be wrong, but I don't think there will be any more coming online till January now.

I can't complain, this means we have about 8 weeks of good profitability regardless of what the price might or might not do, this should make up a bit for all the losses which many of us have been facing with the 17 series gears. Cry.

Current difficulty status

Current Pace:   88.2848%  (1311 / 1484.97 expected, 173.97 behind)
Current Difficulty:   19997335994446.11
Next Difficulty:   between 17688830739610 and 17942127621555
Next Difficulty Change:   between -11.5441% and -10.2774%
Previous Retarget:   October 17, 2020 at 5:34 PM  (+3.6234%)
Next Retarget (earliest):   Monday at 8:42 AM  (in 5d 7h 38m 22s)
Next Retarget (latest):   Monday at 2:10 PM  (in 5d 13h 5m 31s)

BTC price is making new highs, currently at $13777, which is great, if we break that 14k level, we should head straight to 16k, with difficulty dropping >10% is just too good to be true as Phil said.
3311  Bitcoin / Development & Technical Discussion / Re: Bitcoin Block Halving on: October 27, 2020, 10:37:33 PM
That 10% faster blocks can be "used" only once, so if this week miners buy 10% more hardware, it's already included in the hashrate 2 weeks from now. Of course, in reality the hashrate is changing gradually, but a higher Bitcoin price makes more difference than the (current) transaction fees.


Just to be clear, I was talking about the short-term, as, within the current individual difficulty epoch, the number of transactions should have the same impact on the hashrate as the price does, anything that transfers to more profit = more hashrate = faster blocks.

Also, I am not talking about miners buying new mining gears and adding them to the network, because that can't really affect how things are in the short-term, but I am talking about the automated process of turning mining gears off and on as well as the profit switching which many if not the majority of miners use when fees on bitcoin are super high compared to the other SHA256 coins, a large amount of that hashrate will switch to mining bitcoin in a few minutes, that could potentially help with speeding the process of finding blocks for a certain period of time.

Quote
Long-term, the hashrate needs exponential growth to sustain 10% faster blocks.

True for long-term, the hashrate growth needs to beat the difficulty adjustment which isn't feasble.

3312  Bitcoin / Mining support / Re: S17+ (70TH) Hashchain missing (but not always) on: October 27, 2020, 08:06:37 PM
A few weeks ago the retailer send back my defective hashboard.
They put my hashboard into a different S17+. This caused the miner to not even start hashing on any of the boards.
From what I understand this means that my hashboard cannot work together with hashboards from a different S17+.

I didn't know these S17+ had the compatibility issues, I encountered the same issue with the S9k, there are about 4 types hashboards, labeled as 1,2,3,4, so you only have a 25% chance of compatibility between different miners, which SUCKS.

Anyway, I am with favebook on this one, go with the 3/3 used, there is NO guarantee whatsoever that the NEW miner will mine any longer than the used one, i'l take the extra 20terahash with no questions asked.

Also, I wonder why doesn't your retailer get a tool like this https://www.zeusbtc.com/RepairDetails.asp?ID=236 to fix the compatibility issue, it's kind of expensive but it would save them a lot of money.

I will revert back once I change PSU if anyone is interested.

I am interested, please update.
3313  Local / العربية (Arabic) / Re: مسابقة Chipmixer 6 لربح البتكوين! on: October 27, 2020, 07:21:07 PM
ياشباب بصراحة احرجتوني معكم  Huh , ادائكم متقارب جدا والشروحات كلها ممتازة وانا احترت صراحة, على العموم انا بانتظار تصويت اخر شخص ووعدني ان يقوم بالتصويت غدا لاعلن النتيجة النهائية, فغدا بعون الله سيكون موعد اعلان الفائز.

شكرا لتفهمكم.

3314  Bitcoin / Development & Technical Discussion / Re: Bitcoin Block Halving on: October 27, 2020, 06:52:49 PM
Median confirmation time is not the same as median block time. The mempool being very full will push median confirmation time up while having zero effect on median block time.

I think tranthidung or anyone else for that matter should do a comparison between block time and confirmation time, theoretically, more transactions waiting for confirmation leads to higher transaction fees as users try to outbid one another,  higher fees make mining more profitable which leads to more hashrate and eventually faster block-finding rate, for example, the last block had 2.34BTC BTC in fees alone, that is 37% more profit than a block with no transactions.

Yesterday alone we had 111BTC in fees that's 1.4M USD out of the total 10.4M USD that were mined, which means one way or the other, 10% of the hashrate was there because of the fees, which also "could" mean that blocks were being found 10% faster than if we had a small number of transactions.

Now, this is only "theoretically" valid, but how does that apply in real life needs to be studied further.
3315  Local / العربية (Arabic) / Re: تحذير أشم رائحة النصب والاحتيال على بعد مي on: October 27, 2020, 02:18:37 PM
من الواضح جدا ان هدا المكسر نصاب, وبالاضافة الى ماتم ذكره, لم اجد اي Review بخصوص هدا المكسر, ايضا بالاطلاع على https://www.duplichecker.com/domain-age-checker.php



عمر الموقع فقط 3 اشهر, والاهم من هدا انهم اشترو هدا الدومين لفترة عام فقط, وهدا مؤشر خطير جدا وينطبق على اي خدمة اخرى, اي خدمة رسمية وغرضها ليس النصب فقط ستقوم بشراء الاسم لسنوات طويلة وليس لفترة 12 شهر فقط.

يجب عدم استعمال هدا الموقع لاي سبب كان, حتى يتبت انهم ليسو نصابين.
3316  Economy / Services / Re: Pine Script Developer Needed. on: October 27, 2020, 01:38:41 PM
holandutter and  Initscri, thank you both for replying to this topic which I forgot to lock, it has been 3 months since I posted this, and I have actually ended up writing the script myself, it turned out that Pine Script is pretty simple after all, will reach out to you in the future should I need any help with anything web-devolvement related.

Thanks.

I will now lock this topic.

3317  Bitcoin / Mining support / Re: ERROR POWER LOST on the Test Fixture on: October 27, 2020, 12:54:44 PM
Are you sure the PSU is working fine? I would test with another PSU as this seems like a power-related issue, also ensure you are using the correct files for the T17e miner, which website did you buy it from? if it was zeusbtc then I would contact Kevin, he will surely help you out. I could also contact him on telegram for you if for whatever reason he doesn't respond to you, do let me know.
3318  Bitcoin / Development & Technical Discussion / Re: Bitcoin Block Halving on: October 27, 2020, 12:18:58 PM
    • 17.76 minutes (current 30-days MA of block time): 7.096 years

    Using the 30 days MA will always give you "terrible" results, the number of blocks found in 30 days is a drop in the ocean as far as the 210,000 blocks are concerned, so getting 7 years halving estimate is pretty normal, getting 2 years is also nothing out of the ordinary, can you do another analysis from the last halving to the latest block? one more thing, you should use block time, ignore the confirmation thing, I remember you made a topic about empty blocks? you could use the same data from LoyceV.

    It is a function of how full the mempool is, not how fast or slow the block time is. If I drop 500 MB of 1 sat/vbyte transaction in the the mempool right now, then even if we found a block every 5 minutes for the rest of the day the median confirmation time is going to be pushed up towards an hour. There is no direct correlation.

    There is a direct correlation between hashrate (aka how fast blocks are found) and how fast/cheap/expensive transactions are, indeed the number of transactions has more weight in the equation because the number of transactions is infinite while the time to find blocks is always >0.

    Using the simple ABC of economics which is supply and demand, the number of transactions is "demand" and the number of blocks found is the "supply".


    3319  Economy / Reputation / Re: Bitmain.Farm SCAM ? on: October 27, 2020, 11:56:25 AM
    A year later and these guys are still scamming, for some reason their ads don't appear to me anymore on Google, but that doesn't really solve the problem.

    @Guby.world, as far as I know, Coinpayments.net is nothing but a payment-gateway, in other words, they are not the once who scammed you, however, since they "could" potentially block all the scammers (at least the obvious once) from using their services, then I can say without a doubt that these guys are not to be trusted and you should indeed contact them and contact the local authority in Estonia.

    Here is a scam accusation against Coinpayment.net
    3320  Local / العربية (Arabic) / Re: مسابقة Chipmixer 6 لربح البتكوين! on: October 26, 2020, 07:06:06 PM
    شكرا للجميع على تقديم مشاركاتكم في الوقت المناسب, اعتقد انه سيكون هناك بعض التأخير في اختيار الفائز نظرا لان جودة الاداء متقاربة جدا واحتاج الى التركيز في التفاصيل الصغيرة لاحدد الفائز, قمت ايضا بمراسة بعض الاشخاص الذين اثق في تقيهم لكي يساعدوني في اتخاد القرار.

    اعتدر عن التأخير مقدما, واتمنى ان اكون قد قررت الفائز غدا او بعد غد بأدن الله.
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