Yes, your VAT.

Send them an email and they will either return funds (unlikely) or change it to paid manually (more likely).

Wait for 6 confirmations.
If it isn´t confimed then, send an email.

This is bitmains wallet afaik: https://blockchain.info/de/address/1QB8Ds5KbGYBLQa5RyDQ2sVUeSKWf7qgkZ

Please count the number of s3s sold

Obviously groupbuy and reseller options are only available for later batches, the first one is exclusively sold through bitmain.

The second /3rd batch should allow a groupbuy, this should lead to a nice price per unit.

It is however likely that the minimum order quantity of 2 will prevail.

1st I said facility. This is not limited to a datacenter.

2nd Do you know the cost of the pictured facility? People usually choose to have their miners enclosed so nobody with sticky fingers gets to them. (And one miner magically turns into two overnight )

3rd Assuming it is in China, power cost is between 12ct and 8ct/kWh (if you have the right connections)

Datatank can be deployed anywhere in the world with cheap (and clean) power. (starting at 2.5ct/kWh)

Datatank miners are cheaper.

Something to consider for the future:
Chinese power costs are highly subsidized by the government. It is unlikely that they will remain so "low" forever.

You cannot do estimations of future difficulty without price speculation, as it is the main factor driving difficulty besides (maximum) production capacity (which would adjust over one year).

Basically, future difficulty will be something like:

BTCprice*efficiency*electricity price(including a small premium for miners)
(not a real equation, but including the main factors)


Everybody knows that price speculation is atleast as much pure voody as difficulty speculation (over a longer timeframe).

It is not economical as the shipment cost would probably be around double per unit.

If you do not even know the cost of a 1.2MW brick and mortar facility, how can you even contest the value proposition?

Please share your inside knowledge of the alternative you are proposing to solve the high density miner deployment problem.

That is pretty bold, couldn´t you wait for the second batch?

I plan on maybe buying some more with the coupons from batch 1 (which i am hopefully getting).

At the end of the day the only thing you need to know is this:

Immersion cooling is cheaper than building a high density facility to host your miners in.

Immersion cooling is more efficient than even a free-cooling facility.

Immersion cooling has cheaper operating costs, as less personnel is required, cheaper electricity can be sourced and efficiency is higher.


Additional savings from reusable power supplys, less cost per hardware (faster/cheaper manufacturing, no assembly required)

Warm fuzzy feeling because *bubbles* (this is not meant to add monetary value).

Your very own (part) of an ultra high-density hosting facility!

was there before.

It is now.

If you were quick you could have gotten in your order

Minimum order quantity is 2 anyways, so don´t bother if you only want one.

I see you have updated 112bit.com with the new Antminer.

Is there any news on the proposed groupbuy?

I assume it would be for the 2nd batch of the miners, as the first one seems to be exclusive to bitmaintech.com?

I hope it was an ironic / comedic post which nobody expects to be taken seriously (thank you for the nice drawing though).

What are you claiming here, that AC/DTM doesn´t have any patents or that only patented structures are able to generate profit?
Last time I checked, you don´t need a patent for a structure to be profitable.

I don´t know why this is important but yes, 10* the cable length does in fact cost (near) 10* as much. You are not talking 1m and 10m here but 500* 10m-100m.
This was also only meant as an example for certain hardware costs, and never to be taken literally.


Are you seriously complaining that a company is trying to have the average miner get into immersion cooled mining?
It is a great solution to many problems that come with high density miner deployment. (as already frequently mentioned)

Usually people are more upset when the big companies develop technologies and keep them to themselves. Offering anyone the chance to profit who is willing to take the risk is a good idea in my opinion.


If you are upset that DTM is trying to raise funds (for a very likely profitable venture) you are entitled to that opinion, however nobody forces you to buy any shares.



To go through your points:

- cable example: see above. It was meant as an example for some hardware costs, but still stands on a large scale (if you really do want to take it literally)

- Enclosures for the sp30 are in fact needed, as they direct airflow and make the unit stackable / rack mountable.
  The custom rack solution you proposed would need a lot of NRE costs and most likely be more expensive than just fitting enclosures.

- PSU costs are included in the fixed costs of the container. They are regular server grade platinum PSUs with some small tweaks for immersion cooling.
  They power every hardware that goes in the DataTanks and are reusable with every new miner generation.

- The "40ft container" is just the big enclosure, the tanks are much smaller. A very small amount of fluid is needed per blade and the cost is included in the overall cost of 0.5-0.7$/W.

- Shipping costs are saved as miners are lighter, take up less volume etc., the container is shipped only once, but can be shipped to a better location if so preferred (try that with your datacenter )

- DataTank gear needs less testing (during manufacturing) as there are less manufacturing steps (money saved here aswell!).
  There is no need to power down the whole farm for servicing (I don´t know how you have come up with that).
  There is also no need to put on any special protective gear (though putting on gloves shouldn´t set you back to many hours )

- It obviously takes more time to completely manufacture finished miners than to just get PCB blades from the factory, ready to be deployed in the tanks. (It not only saves time but also labor = money)

- Havelock is by far the most professional Bitcoin exchange out there. They properly vet any new stocks and the companies behind them, so nobody simply runs off with your invested funds.
  Who is to say professional mining farms / manufacturers aren´t interested in this?
  As a fact, AM has a 0.5MW immersion cooled facility (using the same basic technology), and it was built by AC, the "parent company" of DTM.

This is probably the best difficulty prediction out there:

https://bitcoinwisdom.com/bitcoin/difficulty

It currently calculates with ~19% on the next jump, which seems pretty plausable.

He isn´t unplugging it, the DC is upgrading their cooling system.
A 4% free performance increase is always nice, don´t you think?

Obviously shipping it to a different location for such a small increase is a bad idea.
Shipping it to the right facility in the first place (assuming smaller than 4% hosting cost difference) would be a good one though.

Some PSU fans should be able to work in an immersed environment (though it has no practical use to it, as it is wasted power).

Just deactivating / stripping it from the PSU is probably the best solution.

Nobody would actually pay 1790$ / S2, I didn´t pay that much one month ago. (Nobody smart, that is)

Even with the 400$ discount the S2 is still at 1390, still high for a 1.1W/GH device in this mining environment.

How is that Bitmain? Bitmain is just the "brand name".