Room size is 10m*6m*3m / 32ft*19ft*9.8ft.

Each 60k btu AC pulls about 6kw worth of power, basically 1/3 of the miner's power.

Maybe a few fans sucking air from hot side back to the cold? I would imagine putting an AC in the hot side is going to melt it.

I am trying to calculate the cooling capacity needed to keep a mining farm running, with the following in mind.

- No intake/exhaust fans, the farm must be sealed and noise kept pretty low.
- No immersion cooling.
- No water cooling.
- Electricity is dirt cheap.

I understand there are better alternatives to cooling down a mining farm (I do that myself) but for this farm, there are no options, so now I am not exactly sure about the setup.

First, let's run some math.

50*M30s or a total of 175KW which is 597,000 BTUs per Hour.

This means a total of 597,000 AC BTU should keep the farm at an "ok" temp, at least on paper.

We have access to 60,000 BTU split AC which means if we place 10 of them, we get a total of  600,000 BTU and the miners should (in theory) run cool, the average ambient temp is 29C / 83F, go to 95 in some days, and down to 20C /68F on some other seasons.

I am pretty sure the math above is correct, but what could go wrong with such a setup?



Also, do you think we can get away with less cooling BTUs during the cold seasons?

So ACs blow in the direction of the miner's intake, cools the miner down, air comes out hot on the other side of the room, and eventually rises to find it's way back to the AC intake to come out cold again, it's obvious that the exhaust space of the miner will always be a lot hotter, contrary to how data centers are designed where they suck the hot air and send it back to the cooling units, but that kind of set up will not be easy/cheap to implement.

Open to all thoughts, especially from those who ran some miners on ACs only.

Well, you are going to have to use a mining pool despite the condition and cost of your electricity, but really that doesn't solve any issues related to power stability, I think he is a bot.



Speaking of "economy" there is no difference between developing and developed nations in that regard, it all boils down to the cost of power, many developing nations have cheaper power rate than some of the most developed countries, after all, all that matters to the miner is how much are they going to pay.

With everything being equal, if you had to choose between mining in a country where the power rate is 1 cent per KwH, where the power cuts 6 hours a day, vs mining in a country that has 24/7 power but sells it at 10 cents KwH, what would be more economically viable? I still remember the Chinese moving hundreds of thousands of miners a few thousand miles a few times a year just to get 2-3 cents lower power rates.

With only 1 E9 pro, you are not going to go above 10 amps, the E9 pro only needs 2200w which translates to 9.2 amps on 240v, which is less than 50% of the rated capacity of that converter, should be pretty safe to run without any issues.

Don't really need an insider to tell us, the payouts can't be more than any regular pool with fees ignored, we also know that running a pool with no fees at all is simply losing money, Binance did that for a while, so did foundry, it's all done to attract clients and then it's gone, depending on the payout method, if it's PPS then anything below 2% is very unlikely, so my assumption which I am pretty sure will hold correct to good degree, foundry charges something pretty similar to what most other pools charge based on whatever payment they use.



80KMW is a LOT of power, I wonder how much of it is used by businesses vs houses, with temps going to as high as 45c, they sure are burning a lot of electricity, would be pretty damn hard to go "green" with that kind of demand.

Ya sorry my bad, the one I linked was indeed L6-30p, couldn't find a PDU with both L6-20p and surge protector, how about using a good adapter like this one, it's rated for 20A 250V.

That way you would have more PDU options and won't have to change the outlet.

You are welcome, here is a list of some of the known free mining proxy

1-Ckproxy > Open-source but pretty much outdated, and doesn't work with most pools I tested (works just fine with Cksolo pool)
2- Braiins Proxy >Open-source, works with most pools but not all (can't recall which ones that didn't but they are a few), it's Linux based so won't run on Windows unless you use Docker.
3-Antpool proxy > Closed-source, doesn't work well with Cksolo pool, works great with Kano.is and most other pools, windows based for anything below 10k gears, the easiest proxy to set up, and has a very nice GUI.

As bizarre as that sounds I personally prefer antpool proxy and have only used it ever since I tested it (I tested most other public proxies before it, hopping not to use anything Bitmain-related, but nothing worked better), I tested it for a very long time without an issue, just make sure the pool you use can handle the difficulty change required by proxy, a list of the pools that I remember to have tested on Antpool proxy:

Viabtc, Antpool, Binance pool, and Kano.is, = worked great.
Cksolo > did not work.

If you need help in setting up any of those proxies, you can start a new topic and I will be willing to help.

That is a possible scenario in theory (your assumptions are correct in regards to how the Whirlwind works), but it's a matter of how likely would that happen.? a compromised PC doesn't automatically mean a compromised wallet, how likely it is that someone will secure Whirlwind's note but not their actual BTC wallet? very unlikely if you ask me.



I agree with this, and I believe, most people would, but the concept of Whirlwind is rather new, people can make mistakes, and what stormbounty told as a story sounds very reasonable (whether it's true or not) it's bound to happen to other users in the future, what happens when thousands of people start using the platform and many of them face a similar issue, ya, it's easy to tell them "sorry, we can't do nothing about it", but then think of all the efforts those people would put into ruining your reputation.

There is no perfect solution, but one is likely better than the other, I believe as long as you can help your clients fix their mistakes -- you should do so, at a reasonable fee that would justify your effort and time, there should be a redline of when you have to dismiss such cases, I believe proof of ownership of the sending address + the letter of guarantee should be the minimum requirements for any kind of refund, anyone who can't provide both shouldn't be served.

Also, depending on the size of the funds in question, some cases could be dismissed right away, I mean if Whirlwind thinks it costs $50 to go through all the evidence and the deposit is $30, they can deny the request. (this is common in some centralized exchanges).

Two unrelated things, to say the least, a mining proxy is a piece of software that acts as a local mining pool for the mining gears and acts as a single miner for the actual mining pool.

Basically, it's a piece of software that runs on Windows for example, and it has the following parameters that you need to enter.

- Pool URL (Viabtc, Kano, or whatever pool you use)
- Worker (worker for the same pool above)
- Pass (password for the same pool above)
- Port (for your miners to connect to).

And then when it's up and running, it will connect to the mining pool, the pool will treat it as an actual miner, and then on your actual miner's config page instead of entering the actual pool you use, the data will be like so

-Pool URL (The IP address of the machine that runs the mining proxy software, an example would be 192.168.1.2:9999)
-Worker (can be anything you chose)
-Pass (depends but usually x)

On the proxy status page, you will be able to see all your miners' shares as if it was a mining pool, on the pool, you will only see 1 miner which is whatever worker you set on the proxy, what is going to happen is your miners combined at the proxy will be submitting way too many shares, the pool's software will treat it as it's one giant super miner and will have to raise share difficulty to keep up a good pace.

Example: you have 50* S9, the pool wants you to be able to submit 10 shares per minute, so you will be submitting 500 shares per minute, let's say that will be 50 MB per minute.

When using a proxy, your miner could still submit 500 shares to the proxy, but the proxy will only submit 10 shares per minute to the actual pool (those 10 shares at current difficulty are worth exactly as much as those 500 shares at the lower difficulty), so now your network traffic on the WAN size is only 1MB per minute, so 50 miners connecting via a mining proxy will only consume as much data as a single miner.

When you have a somewhat pretty slow connection, connecting many miners will start to cause issues, reducing the number of connections to the pool to just 1 always helps, in fact, a mining proxy is a must when you go past a certain number of miners, it would be a nightmare having to route thousands of miners without a mining proxy.

The number of users should not affect the stabelity of 4g connection if the provider is near modest, of course, if they account for 50 users and end up having 100 users the service will be affected, so it all depends on the service provider and how they size thier infrastructure.

One downside of using 4g is the cost, almost all packages have limited qouta، if you run a large farm you will be spending a lot on internet alone, the only solution for that would be using a mining proxy, in fact, using a mining proxy will also solve a lot of issues that you encounter from bad internet services.

It was probably a reply to my comment above which states:


Of course, if read out of context, one would assume that my reply (which had your post about ck and kano pool quoted) implies that those two pools are not trustworthy (the 'risky' word), of course, both pools are trustworthy run by two trustworthy community members, if anything, i'd trust them more than most large pools out there, I concur to that, but that was not what I meant by saying 'risky'.

If my statement was misunderstood by him, I can just quote myself.

Yes, cold places are great for mining and data centers, cooling costs a lot of money to build as well as to run.


Oh please, keep these political arguments out of the mining section, here is a dedicated board that's best suited for all the political garbage , you guys won't even have to start a new topic, the U.S vs Russia topics are all over the place.


You would be amazed by how stupid mining pools are, a few years ago, the 3 largest pools revealed the geographical locations of miners to Cambridge University, a stupid move that was very unnecessary.

If we are talking about legally extracting such info from a pool, it would depend on where the pool is located,  a Chinese mining pool doesn't have to answer to the U.S. government, and a U.S mining pool doesn't have to answer to China, besides, it costs next to nothing to mask your IP address, just run a VPN on your router and you are good to go, don't listen to anyone who tells you that it won't work -- it works perfectly, I have been doing that for a very long time without any issue, just don't connect to a VPN that is on the other side of the globe and the pool needs to be close to that VPN location.

For example, if you are in central Africa, connecting to a VPN in Japan and a mining pool in Europe = problems, if you are in the same location, connecting to a VPN in Europe with a pool in Europe = no problems.

Where did you search? a simple google search takes me to this link



This PDU is 7.2kw which is more than enough for your  E9 Pros, it has 4*C13s which is enough for the two gears (each miner will need 2 sockets).

Alas, you still don't get it, according to their rules they do not have to ask you to sign a message, all this message signing is proposed by community members, which is why I said you need to control your behaviour, because for all we know, they don't have to attend to that.

You are right with only one thing, you deserve a reply from the support team no matter what, given that you have the letter of gurantee.

The count starts today, in the past couple of days all you had is the guarantee letter which doesn't prove much as I explained in my previous post, it's only NOW that you were able to sign the message proving your ownership of one of the coinjoin addresses.

Now, let me clear some things for you, in a perfect world, Whirlwind would spend the time and effort to verify both your letter of guarantee and your ownership of the depositing address, but this isn't a perfect world, they could still ignore you given that you lost your note private key and there was a clear warning not to.

Reflecting on similar situations that happen to centralized exchanges where a user deposits a non-tradable coin or the wrong coin to the correct address, the exchange can still extract those coins but many chose not to do, as that involves time and effort, they already told you to deposit x and you went ahead to deposit y, why should they attend to that for free? so some of them will charge you a fee to fix your mistake, and some of them will just cancel you altogether.

Now it's all up to Whirlwind and how would they want to handle your issue case, in my opinion, they should attend to it, verify the transactions, and charge you a small fee (upon your approval before proceeding with anything), if you refuse to pay the fee, they should just ignore you and dismiss your support ticket, at least this is what I would do.

and now comes the important part, your behavior is not helping, I understand that this money could be all you got, and it's so important for you to get it, but what do you get from calling them names and all that? it will only make things worse for you, after all, they could ignore everybody's opinion, don't bother with checking any signature, and simply stick to their rules which you have agreed upon before using their service, you lost your private key -- your funds are gone.

I suggest you edit your posts, take a deep breath, send the signed message to their email along with the letter of guarantee, and then wait a few days before posting anything.

The example you posted above isn't related to people who use mixers, that user was 'applying for a signature campaign' that happens to be for a mixing service, it's very likely that he doesn't use mixers, which is fine, but my statement was for those who actually use mixers, I doubt that the % of people who actually mix their coins don't understand what private key or how to generate one using a wallet.

Also, that conclusion should be read in context, when you use Whirlwind you have to deal with a private key one way or the other, you either generate it using the front end of Whirlwind's website, or using another wallet like Electrum or even a mobile wallet, the end result is the same (you get a private key), but the possibility of losing it is a lot higher when you rely on your memory to help you save the private key before you close the browser or hit "next".

Furthermore, when the user copies the private key from Whirlwind website, they are most likely going to save it as plain text on their computer, while if they generate a private key using a proper wallet, that private key will be encrypted, you don't have to save, and even if you lose your computer you still have access to the private key assuming you have backed up your wallet.

So now even if we were to assume that the majority of people who use mixers DON'T know how to safely generate a private key, they are still better of take that risk than risk 1- not saving their private key generated on browser 2- losing that private key 3- the key is exposed in plain text.


But you said you have the private key, if you do, you can sign a message, just because the wallet you use doesn't allow you to use that, it means nothing, check this https://reinproject.org/bitcoin-signature-tool/#sign , repo > https://github.com/weex/bitcoin-signature-tool

I have not checked the code but you can easily find some trusted tools which you could use offline to sign a message, you could also import that private key to a proper wallet and then sign the message.

 hello again there German community.

Bitcointalk-Nutzername:Mikeywith

Niedrigster Bitcoin-Preis bis 31. Dezember 2023 um 23.59.59 UTC: $19,300

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Thank you both Turbartuluk and 1miau for hosting these events.

To be frank, It's more like certainly, i mean, there is no doubt that their marketing is indeed misleading


This is a subject of debate, see, Nicehash don't publish false data, when they tell you that "today we paid 20% more than the average pool" they are honest about it, it isn't something they can fake or hide, it's pretty easily determined and anyone would call them out on it, what they do instead is make advantage an extraordinary event and paint a picture for people to make them believe this is the norm when it isn't.

Now one can argue that up to this point, they are still "honest", but then when other opposite events happen and they pay 20% less than the average pool, they pretend that it doesn't happen, they keep their mouths shut until another special event that works in their favors happens, and they would use that AGAIN to mislead folks into thinking that Nicehash pays out more.

It's not an easy thing to spot, even for people who have been mining for a very long time, who on earth watches their daily payouts and compare it to other pools, 5 out of 10 miners, maybe, who does that every single day of the year? probably nobody, you need to be keen to catch them, write some code that runs 24/7 to collect all the numbers and then run them by the end of the year, otherwise, you need to get lucky to notice it, so I am willing to bet that the majority of people are not aware of this fact.



I totally agree, I would never tell someone what to do with their gear, or what gear to buy unless they ask for my help/opinion.

الهاش الريت الاجمالي لموقع نايس هاش 4000 petahash يعني انه لايمثل الا 1.2% من الاجمالي, الانخفاض فا الهاش ريت بداء مع بداية هده ال  epoch نظرا لارتفاع درجات الحرارة غير الطبيعي في ولاية تكساس التي تحتوي على مايقارب  46000 بيتا هاش اي مايعادل 14% من اجمالي الهاش ريت حول العالم, حيث تطالب شركات الطاقة المعدنين بالاقفال المؤقت او الترشيد في الاستهلاك (اغلاق جزئي)عند ارتفاع درجات الحرارة وزيادة الطلب على الطاقة, وهدا امر طبيعي يحدث تقريبا كل سنة.

It is evidence that something has indeed happened, but it's not evidence of who made that action, it's really nothing more than a piece of code that sings a message using the mixer's singing address.

It's useful when you don't want to save everything in a database, you can verify the signature to know that address x deposited/withdrew x BTC at x time, and that letter is sent a plain text file, which looks like this:


If my funds didn't show up for any reason, I could still contact Whirlwind with proof that a withdrawal to x address was initiated even if they don't have that stored in a database they could still verify the action. it doesn't prove anything more than that.

On the other side of things, this is what a letter of guarantee when you deposit looks like


If I send funds to bc1qke0e934n3v4dt5lgu7p8r2gvctfq54qhgtun7s and then check my note and it's empty, I can use that as evidence that this address was indeed given to me by Whirlwind, in other words, Whirlwind can't just tell me "we don't own this address, we didn't ask you to deposit funds to it".

So now the user in question is already passed this stage, he has strong evidence that he deposited funds to an address given by Whirlwind which corresponds to a private note, which is why I think at this stage the user must not be ignored when they ask for support.



I assume the majority of users don't understand that the generation of the PK is done in the front end, they probably assume that Whirlwind has a table full of PK which they randomly assigned to different notes, it would be best to advocate for using ones' own PK, ideally, you would want to FORCE the user to enter his own private key generated elsewhere and use that as their note, that way they are unlikely to lose/forget it, but for now, maybe just add a note that says (you can use your own bitcoin private key generated elsewhere instead of using our website to create that)

Most people who use mixers probably know how to safely generate a private key, so along with verifying that they indeed copied it (something like what you suggested) which shouldn't show in the next page, because, in the next page the deposit address is already displayed, it should be displayed in the same page right after the captcha, all that should contribute to fewer user's mistakes.