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3281  Local / العربية (Arabic) / Re: متجرى الالكترونى on: November 02, 2020, 09:28:56 PM
لقد قرأت الموضوع الموجه ضدك وقرأت ردك ايضا, بالنسبة للاتهام فأنا لايمكنني التعليق عليه نظرا لاني لا امتلك دليل يدينك او يتبت برأءتك, اما بخصوص ردك في هدا الموضوع فهوا تهجم على ذلك الشخص اكثر من كونه دفاع عن نفسك.

ماكان يجب عليك فعله هوا شرح ملف 0x32.php الموجود في الموقع لديك وماهي وضيفة ال Post function التي اشار اليها ذلك الشخص.
3282  Bitcoin / Bitcoin Technical Support / Re: Nevous About Using the Core Wallet... on: November 01, 2020, 10:22:08 PM
I had a Ledger Nano a few years back and almost lost a lot of Satoshis because it could not handle the "dust" (small regular deposits) from my mining rigs and would never stop syncing.

The way I deal with my small mining earnings is by using a hot wallet (mostly Coinomi) as a "temporary storage" before sending anything to my hardware wallet, so you could probably use a similar set-up and send your earnings once a month or so depending on the size of your earnings, I find this to be the most suitable way for small-sized miners.
3283  Local / إستفسارات و أسئلة المبتدئين / Re: بخصوص نقاط الجدارة on: November 01, 2020, 08:54:19 PM
اضافة الى ماقاله الاخ خالد, الكثير من الاعضاء مؤخرا تم اكتشافه انهم يمتلكون اكثر من حساب وتم مناقشة الموضوع هنا https://bitcointalk.org/index.php?topic=5273462.0

الكثير من الاعضاء توقفو عن اعطاء نقاط الجدارة للاعضاء الجدد تحسبا ان الحساب مملوك لشخص اخر وعاجلا ام اجلا سيتم حظرهم وتختفي نقاط الجدارة معهم, طبعا لكل منا وجهة نظر بخصوص الموضوع ولكن يبدو ان الاجماع يصب في تلك الكفة.

وبناء على ذلك ونصيحة مني لا تشغل نفسك بنقاط الجدارة, عند مرور وقت كافي لك هنا سوف تلاحظ ان الاعضاء اصبحو اكثر "كرما" معك في موضوع نقاط الجدارة, فقط قم بمتابعة نشاطك ونشر معلومات مفيدة.

بالتوفيق.
3284  Bitcoin / Mining speculation / Re: It is 2020 time for a new diff thread. on: November 01, 2020, 07:31:51 PM
More hydro is still on that's for sure, we just don't know how much of them are there, but it's safe to assume that the majority have left already, however, with prices above $13,500 and a drop of 15% will be more than good for many miners who are no unprofitable, also many auto-switching miners will move from other coins to BTC when the adjustment happens that's guaranteed.

I will be more than happy to see an increase of not more than 3% (assuming price will stay in the range), I won't mind another huge drop but it's really asking for too much, more like wishful thinking.

With that being said, if the lockdown in Xinjiang remains, we could actually see another drop because many efficient gears need to be moved from Sichuan (Hydro area) to Xinjiang, the majority of the S9s will be sent to warehouses and palletized, but many other efficient gears will go back to other regions, Xinjiang has almost half the hashrate of China, so a large percentage of the efficient gears will be going there, and of course, with the Corona lockdown they have now, the transportation process could be slowed down allowing for another drop, so let's follow Xinjiang lockdown news.
3285  Bitcoin / Mining speculation / Re: It is 2020 time for a new diff thread. on: October 31, 2020, 07:49:11 PM
We are heading back to early Aug difficulty of 16.8T, this is HUGE.



Next Difficulty:   between 16868708792081 and 16926182940736
Next Difficulty Change:   between -15.6452% and -15.3578%

But if we consider that miners in China make up at least 50-60% of the global hashrate it also means that more than 3/4 of them are either not affected or they are not using the rainy season and taking advantage of this, thus invalidating another theory about the percentages by regions where Sichuan was quoted to dominate. Anyhow!

That's a good point but really hard to prove, we don't know if actually, only 15% of the hashrate is was gone or it was 30% gone and 15% came from the new gears, also we don't know if all hydro gears went offline, or just half of them? from what I heard recently, there are a few places that still have good enough water levels that should be good for a week or two from now, I have no estimate on those, but I know they do exist, so all in all, not every hydro gear has gone offline just yet.
3286  Bitcoin / Mining support / Re: Chain 1 only find 6 asic, will power off hash board 1 on: October 31, 2020, 07:19:18 PM
How much is each chip price

Not sure if T17 uses BM1396AB or another chip, but the price should be in the 5-10$ range per chip, but that isn't the issue, the issue is how are you going to replace the chip? you will need a professional to do it, another potential problem is it's unlikely to get 1 chip order, you might need to get a whole strip of 10 chips, plus shipping and all of that, it makes fixing the hash board expensive enough to just forget about it, but of course, do your own math.

T17 40th goes for about $370 in china (used), so my guess that a used hash board would be 20-25% of that? so $70-90 is my guess.

Quote
i see some videos that one faulty chip on a hash board could cause problem...

Yes the way these boards are made, 1 bad chip stops 29 other chips.
3287  Local / العربية (Arabic) / Re: الغاء المعاملات في محفظة الكتروم on: October 31, 2020, 02:05:34 AM
أعتقد أن هذه الخاصية مساوئها أكثرمن نفعها، لا أعلم ما هو الاستخدام الحقيقي أو الحاجة الفعلية لهذه الميزة!
أنا في العادة عندما تتأخر المعاملة ولا أحصل على أي تأكيد استخدم ميزة استبدال المعاملة باستخدام رسوم أعلى وأعتقد أنها كانت كافية. أما أن تلغي المعاملة بشكل كامل فهو أمر لا أعرف ما الغاية منه إلا في حدوث خطأ

بالعكس هده الميزة جيدة, لا يوجد اي عيوب من استخدام هده الميزة, ايضا فعليا انت لاتقوم بالغاء المعاملة, لانه لايوجد شي اسمه "الغاء" معاملة, فالمحفظة لاتستطيع الغاء المعاملة بعد عمل broadcast لانها ستكون مخزنة على جميع النودز الاخرى, ماتقوم به المحفظة هوا ارسال transaction اخر لنفس ال Inputs لعنوان تملكه انت, يمكن طبعا استخدام هده الخاصية للنصب والتحايل ولكن هده الخاصية موجودة من الازل في محافظ اخرى, ويمكن لاي شخص استخدامها, والا ماكنا ننتظر confirmation اصلا.

Quote
على كل حال أريد أن أسأل هل من الضروري تحديث المحفظة (أقصد من الناحية الأمنية) أم يمكنني البقاء على النسخة الحالية. 


لا استخدم محفظة الكيتروم (الا قليل النادر), ولكن دائما احاول تجنب التحديث لاي محفظة او اي برنامج  الا ان كان هناك ثغرة تم حلها والتحديث كان ضروري, اما ان كان التحديث عادي, يفضل الانتظار بضعة ايام حتى تتأكد ان التحديث لايعاني من اي مشاكل, وبعدها تقم بالتحديث.

3288  Economy / Scam Accusations / Re: AsicLine POW Miner SCAM Hardware. 10/30/2020. See Calc for a Laugh! Poll! on: October 30, 2020, 10:07:07 PM
But sir!! we are an established business, we have been in the market for 4 whooping months (never mind the 1 year only subscription, our boss's son spent all the IT budget on his new iPhone).



Sir, we are legit, we use asic chips imported from Neptune this why we can achieve such hashrate, if you don't trust us, please buy first and then judge, sir.


No pride in scmmer work anymore. Smiley

Indeed, scammers back then used to put in some work, they would seduce the victim for weeks, endless emails back and forth, and all that just to get the victim to send $200 via western union, but nowadays scammers, spend $50 on a domain and use an "on-the-go" WordPress and attempt to scam multiple victims for $5,000. Grin

While this fits best in this section, it will sadly be moved to the reputation/scam accusation board because of the forum rules.

Nice catch, sir!.
3289  Bitcoin / Mining support / Re: Chain 1 only find 6 asic, will power off hash board 1 on: October 30, 2020, 09:24:44 PM
This confirms my theory, even more, I think you are confusing yourself, the miner only unders 1,2,3 which is the 18pins attached to the control board, clear? now that we got this out of the way, you should understand that since:

Chain 1 was in location 1 = chain 1 is bad
Chain 1 moved to location 2 = chain 2 is bad

this means chain 1 (what you call chip) is bad!

If the result was:

Chain 1 was in location 1 = chain 1 is bad
Chain 1 moved to location 2 = chain 1 is bad

then chain 1 is good and the problem is the PSU or the control board, but this isn't the case.

if you are confused still, do this.

Remove chain B and C , keep only chain A and do 3 tests

- 1 > ChainA
- 2 > ChainA
- 3 > ChainA

The results will be:

-Chain 0 has 6 Asics
-Chain 1 has 6 Asics
-Chain  2 has 6 Asics
3290  Local / العربية (Arabic) / Re: ما هو سبب ارتفاع رسوم شبكة البيتكوين on: October 30, 2020, 08:45:26 PM
يقول الموقع أن السبب هو موسم الأمطار في الصين حيث تتركز جزء كبير من قوة التعدين في العالم حيث يتم استخدام الطاقة الكهرومائية الرخيصة"

هدا الموقع متأخر في نقل الحقائق, لقد تكلمت عن هدا الشي منذ اكثر من عشرين يوم  Grin

he brought a very interesting point which is the hydro season in China, many large players are counting on a nice difficulty drop by mid or end of this month when the rainy season in China is over and there is no more dirt-cheap power, we know that there are tens of thousands of gears which are now hashing at almost free power somewhere near the rivers in China, so it does make sense that these will have to go offline pretty soon, we don't know exactly how much the total hashrate there is, but I can only assume that it's at least 10-15%.

I believe a drop of 10-15% is almost certain by the end of the month

على العموم احد اهم الاسباب في ارتفاع التكاليف هوا نقص عدد البلوكات حيت ان متوسط زمن البلوك اصبح 14 دقيقة بدلا من 10 دقائق في بعض الايام, يعني لك ان تتخيل كمية تراكم التحويلات, وضف على ذلك ان التقلب السريع في السعر ينتج عنه زيادة التحويلات من المحافظ الى المنصات لغرض البيع والشراء, وهدا جزء من الاجابة على سؤالك هدا:

Quote
لا أدري ما سبب ارتفاع الرسوم بهذا الشكل الكبير؟ ما الذي يحدد الرسوم في الأساس وما الأسباب التي تجعلها ترتفع أو تنخفض؟

مايحدد الرسوم هوا الشخص المرسل (في معظم الاحوال) ولكن من يقرر اي تحويل سوف يتم تأكيده هم المعدنين, وطبعا الامر مبني بكل بساطة على الطلب والعرض, كل ماكان هناك تحويلات اكتر وبلوكات اقل يعني ان الناس التي تريد تأكيد سريع عليها دفع رسوم اعلى لضمان دخول تحويلها في البلوك القادم او الذي يليه, وهنا يحصل نوع من المزيادة العلنية في السعر والبقاء للاقواء.

هدا تأتي فائدة استخدام عنوان segwit وايضا فائدة جمع ال inputs, يعني ان كان لديك 50 input بقيم صغيرة يجب عليك جمعها عندما تكون رسوم التحويلة صغيرة لان كل مازاد عدد ال inputs زاد حجم المعاملة وزادت تكلفة تحويلها.

يمكن قراءة هده المعلومات لتفهم كيف تقلل من تكاليف ارسال البتكوين https://en.bitcoin.it/wiki/Techniques_to_reduce_transaction_fees#Payment_batching

3291  Bitcoin / Mining support / Re: Chain 1 only find 6 asic, will power off hash board 1 on: October 30, 2020, 06:04:54 PM
If mine ran for a year I would be happy enough to throw it away, this is a good record and above average life-span.

Code:
driver-btm-api.c:1042:check_asic_number_with_power_on: Chain[1]: find 6 asic, times 2

the heatsink on chip no.7 has probably lost contact, the solder paste must have gone bad, this is pretty normal with all of these gears, at least 30% of hash boards die this way.

Fixing this problem is expensive, there is nothing really you can do, just remove that hash board and mine with the 2 good hash boards, there are a few things that you can try, most of them are mentioned in this topic and this topic.

Try them out, if nothing works, go ahead and remove that board since it actually slows down the boot time and might make your miner reboot every once in a while, which is something you don't want.
3292  Bitcoin / Mining speculation / Re: It is 2020 time for a new diff thread. on: October 30, 2020, 05:36:43 PM
Oh, I wasn't saying like 13% for this epoch, it's going to end in 3 days so there is not much room to drop even further but for what's coming next, another slight drop, maybe 2-3 or even more?

It's almost impossible to predict the coming epoch because:

1- We don't know if all hydropower gears already went offline.
2- Current price is pretty good and with 13% many miners will be profitable again.

I am leaning towards a slight increase rather than a drop because I think most if not all gears which run on hydropower in china are already offline, but let's wait and see.

I am not alone, most miners didn't have a good year, 2020 has been rough on us, don't envy us for having a good month or two. Cheesy

I don't and I can't envy somebody who works hard and has ups and downs...

Ya, that was a joke actually. Grin

That's why I was saying, grab those huge fees already, mine more blocks and get more rewards so we as users could spend again with at least 10sat/b, let's all be happy Grin. Anyhow, the weekend is coming, there will be a difficulty retarget probably on Monday so things might get better.

Next week will be good or at least much better for fees (from the users' perspective), so make sure you consolidate your inputs then.
3293  Bitcoin / Pools / Re: ADVICE PLEASE -Which pool is best suited for miners not running 24/7? on: October 30, 2020, 11:55:22 AM
I also notice the min payout is 0.005BTC, think it will be while before i reach that...lol

If the minimum payout is an issue check the other pools, via has a 0.0001 min payout IIRC.

Also many pools will allow you to withdraw your earnings anytime before reaching the minimum payout but you will pay some fees.
3294  Bitcoin / Mining speculation / Re: It is 2020 time for a new diff thread. on: October 30, 2020, 02:03:19 AM
Will it be just 13%? Block time went from 12.30 to 13.09, 14.54 and 14.4. In the last 24% hours there have been 104 blocks, that's only 72% of the target. Of course, we all know, luck..but common, just bad luck for 5 days?

You are correct, but 72% is only from within the last 104 blocks if blocks average time has been like this from the first block then we would have a difficulty drop of 100-72, but we only started going this slow recently, in other words, mining gears have been shutting down gradually not all at once, on the first day of this epoch the average block time was 9.1 mins, on 24th it was 9.4 mins, also keep in mind that new gears keep coming online as the old once leave, also the auto profit-switching algos will mine BTC for a few hours and then go to another alt and so on so forth.

in short, there is a lot of noise within the short intervals, pretty hard to tell why and how things happen.

As for the profitability all that gear that was running on dirt cheap/ free excess hydropower, is it so unprofitable that will not get back online even with just as cheap coal power? Or is this a combination of the new tariffs in Inner Mongolia.

Good point, hydropower costs about 1 cent per Kwh, coal power costs anywhere from 3.5 to 5 cents, there is no doubt that a good portion of these gears will come back online, but I got a quote for $38 per miner with PSU and that's S9i, not the old S9 which is probably below $30, that is very close to their scrap value, this drop in price suggests that many, many S9s aren't going back to "work".

However, eventually, another larger portion will be shipped overseas to countries like Malaysia, Iran, Venezuela, and many other countries that have 1 cent or less power rates, but all those countries combined can't accommodate 100% of the supply, which means a lot of S9s will sit there and do nothing, perhaps they will come back online when bitcoin price starts to hit some good levels.

With that being said, with a difficulty drop of 13-14% and bitcoin price above $13,000 I won't be surprised to see a +% change in difficulty in the next epoch.

But, as much as you miners enjoy this drop combined with a price increase I'm certain that a lot of people can't for this painful period to be done so we can see again blocks at a 10-minute interval, it's nearly 4 days of high fees and clogged mempool, with 150MB and 45btc in fees sitting there. Just grab it already!!!!  Grin

Miners are the back-bone of Bitcoin, you should be paying high fees with a smile on your face knowing that it's going serve a greater purpose. Grin.

All in all, as miners, we could really use the high fees and drop in difficulty for a few weeks, I have personally encountered a large loss due to investing in the 17 series mining gears from Bitmain, my timing was perfect, the plan was supposed to work out, but alas, turned out the quality was more than terrible, and a short while before that I lost a good amount of money with those S9ks, and I am not alone, most miners didn't have a good year, 2020 has been rough on us, don't envy us for having a good month or two. Cheesy
3295  Local / التعدين / Re: استفسار عن POS on: October 30, 2020, 12:33:56 AM
الفكرة واضحة جدا بالنسبة لي وقرأت الكثير هنا في المنتدى
ولكن كمصطلح من الخاطئ ان نقول جملة (تعدين Pos) أو (تعدين من قبل Stakers)
بمعنى لايجب اقتران كلمة التعدين مع اثبات الحصة Pos عند تأكيد المعاملات في العملات التي تستخدم هذه الخوارزمية

اثفق معك بشدة اخي, والخلاف هنا "لغوي" اكثر من كونه "ثقني", من يستعمل كلمة تعدين في عملات POS يمكن ان يفسر سبب استخدام كلمة تعدين على انها "استخراج" كما موجودة في المعجم, وهي ايضا بالانجليزية extraction, وثقنيا حتى عملات POS يوجد بها استخراج, فهم يرو ان الكلمة مناسبة, من جهة اخرى ومن وجهة نظر حضرتك وهي وجهة نظري ايضا, ان كلمة "تعدين" تم تخصيصها للمعدنين على عملات POW ومن الافضل تجنب استخدامها في عملات POS, لانه سينتج عنها سوء فهم يجعل بعض الناس يبحتون عن اجهزة تعدين او احواض تعدين عملات POS مثلا!..

 ولكن ولان الاختلاف هنا "لغوي" فلا يوجد فيه صح مطلق او خطاء مطلق, بل هوا يكون مبني على مبداء "الاجماع" تماما كما يحدث في معظم العملات الرقمية ان كان الاغلبية يرون ان كلمة "تعدين" مناسبة فالكلمة ستفرض نفسها, والعكس طبعا صحيح.

3296  Bitcoin / Mining / Re: Learn from my mistake (load balancing) on: October 29, 2020, 11:27:12 PM
I understand better now actually, you should invest in a circuit breaker suitable for your output cables, because in this configuration you only have to protect absolute short circuits: s which is not really good for safety. Or add a DIN type circuit breaker, much less expensive and just as efficient, preferably of curve C;)

Yup, I have smaller amp rated MCBs which should trip before the cable gets too warm since that main breaker is larger than what the cable can handle.

I usually touch cables from time to time to watch that it does not heat up precisely ... you should also invest (if it is not already the case) in a current clamp, it is not worth much thing, and you can very easily check your load balance, check cable by cable, and normally, if you take the 3 phases with the clamp, it will only indicate the unbalance value, ideally if good balance, close to ZERO;)

I do have one, actually, if you clamp the N wire alone you get a clear idea of how balanced/unbalanced the load is, a perfectly balanced setup will result in 0 amps reading on the neutral wire, the higher the current the more unbalanced your phases are, and just for fun below is the formula for "Neutral Curren In Unbalanced Load":

N current = (Phase1 ^ 2 + Phase2 + Phase3 ^2 - Phase1* Phase2 - phase 2* phase 3 - phase1* phase 3 ) ^ 0.5

Assuming phase 1 = 10amps, phase 2 = 20amps and phase 3 = 30 amps we get:

N = (10^2+20^2+30^2-10*20-20*30-10*30)^0.5  = 17.3A
3297  Local / التعدين / Re: استفسار عن POS on: October 29, 2020, 10:24:04 PM
سلام عليكم
السؤال : (كمصطلح تقني أو عبارة تثقيفية) هل نستطيع القول بأن العملات التي تعمل بنظام POS هي عملات غير قابلة للتعدين ؟

نعم هي غير قابلة للتعدين لانه لايوجد حاجة ل proof of work في هده العملات, من يقوم بالتأكيد على التحويلات وبناء البلوكتشين هما ال stakers, ان كنت تبحث عن تفاصيل اخرى محددة فالرجاء التوضيح اكثر, اما الاجابة المختصرة هي ( هده العملات غير قابلة للتعدين).

3298  Bitcoin / Mining speculation / Re: Dry Water Submersion for ASIC cooling? on: October 29, 2020, 09:27:58 PM
Mining is a "cost" based game, you need to compete with thousands of other miners, the once that last longer are the once who keep their expenses low, that Novec 649 is pretty dope, you could probably put it in a fish tank at home and drop a miner in there for decoration purposes, but soaking hundreds of miners in it will cost you a lot, probably just enough to put you out of the game before even starting, so long story short, the idea is nice, but not practical in real life.

Since the liquid would be very cold perhaps around -10c I could run the hardware really hard so I could get a lot more value out of them.

1- Good luck getting the miners to start at that low temperature.
2- Overclocking your miners doesn't always lead to more profit, in most cases, it reduces the efficiency of the miner and increases your power bill.
3299  Bitcoin / Mining speculation / Re: It is 2020 time for a new diff thread. on: October 29, 2020, 08:43:39 PM
I wonder how many of the big mines actually upgraded to the latest versions of the Antminer my thoughts are a lot didn't buy they as they were concerned over the Bitmain leadership wars and late delivery and they stuck with the older machines.

Interesting times!

Let's do a bit of analysis:

The difficulty we had before the halving was 16T, at that time the first batch of S19s was starting to ship out, which IMO was the reason why difficulty only dropped to 13.7T despite a reward reduction of 50%, in late June with a combination of the new mining gears from both Bitmain and Micro BT and the rainy season which resulted in thousands of S9s to go back online.

From June to late October we rose strong and steady from 13.7T to 19.9T which is a spike of 45%, what's interesting is this:

Late September price was at the 10k levels while difficulty was already above 19T, now we are 35% up in price but 13% of the hashrate is fading away, the question is if these guys were profitable at 10k price and 19T difficulty why leave now when the difficulty is almost the same but price is 35% higher?

The answer is simple, the 13% are old gears that are no longer profitable without the hydropower, there is no way that someone who mined with S19/S19 pro back in September would shut down now when profits are much higher!

Since we are heading back to 17T levels and assuming that this is it and we are not going to dip any further, in other words, assuming all the S9s in China are now shut-down, then we can safely assume the following is accurate:

13.7T to 17.3 T most of it came from new gears.
17.3 to   19.9T most of it came from old gears.

My estimation is 25-30EH came from new gears (Bitmain 19 and 17 series, as well as both Avalon and MicroBT new generation ) and more or less the same came from old gears, but this is still a bit too early to confirm, we will need to see how the next epoch react, and long story short, any drop in difficulty with the price above 10-11k comes from old gears going offline, when we stop dropping or start going back up then we know that all the hydro gears are gone for this year.

But when a pool grabs 2.8 btc  in fees  due to to many blocks getting made  they can justify selling the 2.8 since the next few hundred blocks will ALL GENERATE HIGH FEES.   So if you make 10 blocks a day  and grab 25 btc in fees know tomorrow you do the same and for the next few days you do this. then sell off a lot of coins at going rate is easier to do.

That's true, but the weight of those freshly mined bitcoins is nothing compared to what others can sell/buy.
3300  Local / العربية (Arabic) / Re: بوتات التداول on: October 29, 2020, 06:42:04 PM
مشكلة البوتات هي ان معظم الناس لا يفهمو ماهي, وهدا تسبب في استغلالها للنصب على الناس واخدت سمعة سيئة, لايوجد اي مشكلة في استخدام البوت في حال كان الهدف هو تحويل استراتجية ناجحة تستخدمها يدويا الى كود او بوت يقوم بالتداول بناء على تلك الاستراتجية.

مثلا على سبيل المثال, ولنقل ان الاستراتجية الخاصة بك بسيطة وهي شراء بتكوين في حال وصول RSI الى مستوى 30 والبيع في حال وصل الى 70 مع وقف خسارة = 10% من سعر الدخول, لتفعل هدا الشي يدويل على فريم الساعة مثلا فسيكون الامر شبه مستحيل وستفوتك بعض الصفقات, فيمكن ان تكتب بوت خاص بك او تستاجر مبرمج ليكتب لك البوت ليعمل بالطريقة التي تحددها انت له وهنا في الاغلب الامور ستسير كما تريدها انت.

في المقابل, شراء بوت لا تعرف الاستراتجية التي يعتمدها وكيف يسكب ويسخر فهدا مقامرة ومضيعة للوقت, يجب ان تكون الاستراتجية معروفة وكما انه يجب ان تقوم بعمل backtest وتختبر اداء البوت قبل تجربته, وللعلم حتى نتائج ال backtest يمكن تزويرها فترا كثير من البوتات لديها نسبة ربح 100% وخسارة 0% وهدا يحدث فقط في التلاعب بطريقة الاختبار وما يعرف ب repainting.

اطلع على هدا الفيديو لفهم النقطة الاخيرة https://www.youtube.com/watch?v=dAzhR0Ve3PI
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