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April 16, 2014, 03:59:52 PM *
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1  Bitcoin / Hardware / Re: HPCT! - another red alert? on: Today at 02:11:50 PM
As you may have noticed on our webpage, our Manufacturing, design and technical center is in Latvia, as we've choosen to work with such Latvian companies as Baltic Embedded ( and Microworld Tehnoloģiju Sistēmas. Find out more about our partners:

European bank accounts have the advantage of being multi currency, so the location of the bank has no effect on client service. Find out more about our bank (

As on of our directors runs a WEEE recycling business in Canada/USA/Europe, we have the advantage to offer such service to our clients and thus provide new hardware while still being as sustainable as possible and not creating redundant electrical equipment.

Our product line contains multiple Bitcoin mining solutions which we have named after famous F1 tracks - Monza, Silverstone, Hockenheim ( In order to promote our products, we a running a promotion, that allows you to win tickets to Silverstone.
Plus apparently you are running an unlicensed lottery.
2  Economy / Services / Re: Bitminer At Ramada Hotel Longterm on: Today at 04:00:08 AM
I don't have information specific to Ramada, but a general understanding of Internet in the hospitality industry.

Their internet hookups are specifically designed to disallow the use like yours: by an unattended device. This is an important hotel safety issue.

You have the following options:

1) Setup your laptop to do Internet Connection Sharing (like in Windows). There has to be some sort of interaction from the laptop every once in a while, some sort of viewing the hotel ads, accepting some sort of the agreement, logging in using some room-specific information, etc. This happens at least once per day, but I've seen it as often as every 2 hours.

2) Upgrade your room hookup to a higher level, called "professional", "enterprise", "VPN" or something similar. Expect significant upcharge in the daily room rate, unless you are under some sort of "premium", "executive", etc. frequent stayer plan.

3) Forget hotel hookup altogether and use a mobile telephony internet connection access point.
3  Bitcoin / Hardware / Re: HPCT! - another red alert? on: April 15, 2014, 09:27:06 PM
Just quoting some stuff before its get deleted.

British company with primary bank in Latvia:

IBAN : LV62RTMB0000634806058

Company address:
High Performance Computing Technology Limited
7th Floor 30 Market Street
Huddersfield West Yorkshire HD1 2HG
Skype: hpct-uk
Bank Address:
Rietumu Banka, 7 Vesetas Street, Riga, Latvia LV-1013

They are green and ethical:
Do you offer a recycling program for old equipment?

We are green and ethical! – We can collect and recycle any old electrical appliances that you have irrespective of whether they work or not and it does not even have to be a computer – anything with a plug or takes a battery. Collections will be carried out when we deliver new products if you have equipment you need to recycle before your delivery is made please contact us.

This is just probably a leftover from their previous con (on the bottom of the FAQ):
Formula 1

British Grand Prix VIP Silverstone Six Package

An unbeatable race experience, offering you the finest hospitality, outstanding race viewing, and the chance to meet a Formula One leading personality. Silverstone Six Hospitality Village is situated between Maggotts Corner and The Wellington Straight, and is one of the best locations to view the race on the circuit, giving you views of six corners from the VIP Grandstand including: Maggotts; Becketts; Farm Curve; Village; The Loop and Aintree. As well as having access to the grandstand, you also benefit from the restaurant’s adjoining garden terrace, giving trackside views literally metres away from the dining area. Alternatively you can enjoy the complimentary bar, and see the race unfold on one of the many screens inside the suite, from the comfort of your own table.

Sunday pre-race Q&A with an F1 Celebrity
The finest gourmet food from head chef Steven Saunders
Superb breakfast, lavish lunch buffet, and afternoon tea
Free flowing champagne & access to an all-day complimentary bar
Viewing from the restaurant terrace or from the Silverstone Six Grandstand
Saturday pre-qualifying Q&A with support race driver
Gift bag including program and a radio ear piece
Complimentary parking permits for the corporate hospitality car park (one per two guests)
Event Managers in attendance throughout the day
Flat screen plasmas with race and timing feeds
Shared tables or private tables of 10
4  Bitcoin / Mining / Re: Why aren't AMD, Intel, Nvidia, etc. interested in ASICs? on: April 15, 2014, 01:36:12 AM
How about a different point of view?

Intel, AMD, etc. are smart enough to know that a miner chip is out of their area of expertise.

With the expected error rate under load of about 1% ASIC miner is much more like an analog IC than a digital IC. Those types of chips are designed by rather small boutiques specializing in mixed-signal and power ICs, for example: tower-side cellular telephony or synthetic aperture radars.

I may be out of date with the current situation in IC design, but the only big, household name with such an expertise that I know of is TI.
5  Bitcoin / Technical Support / Re: Problems running a node on VPS on: April 14, 2014, 09:00:32 PM
Are there any workarounds, or am I basically shit out of luck unless I upgrade the VPS to more RAM?
swapon -a
is your friend.
6  Bitcoin / Bitcoin Discussion / Re: Trezor Usage Not Secure IMO on: April 14, 2014, 07:32:31 PM
My wish list:

Secure root of trust. Trust anchor (key/certificate) burned into OTP memory.
Secure boot.  Using the secure root of trust, the device can authenticate it's software load and fail to load if tampered.
Secure updates.  Certificate based system to allow the manufacturer to authenticate and update devices remotely.
This was already discussed in the original thread: Trezor aims to promote open development and not trying to recreate jailed environment like the ones promulgated by Apple or Samsung.

Genuine paranoiacs will never feel "secure enough", but the points above are from a wishlist of a petty tyrant or a naive newbie.
7  Other / Politics & Society / Re: Donetsk, Kharkov, Lugansk - way to Russia. on: April 14, 2014, 04:23:32 AM
Anyone here knows the whereabouts of bitfury? From my past interactions with him he was either an Ukrainian or a Russian residing in Kiev. Is he safe? His last post was from New Year's Eve.
8  Bitcoin / Hardware / Re: [ANN] Spondoolies-Tech launches a new line of ASIC miners - Best W/GH/s ratio on: April 12, 2014, 10:15:31 PM
Indeed, I'm not an ASIC technical guy.
Point taken. After Passover holiday (towards the end of next week) we'll publish some more technical data.
I do however know the exact status of the project and it's timeline. And everything I've said is true.

As explained multiple time before. The 2nd gen is a simple die shrink of our 1st gen ASIC. It's essentially the same engine.
Well, there enough people here who understand that with a simple die shrink noise margins shrink faster than the consumed power.

Anyway, I will gladly wait for an update after Nissan 22nd, 5774.

Meanwhile, please enjoy a belated happy Purim song, because I don't know any Passover songs.
9  Bitcoin / Hardware / Re: [ANN] Spondoolies-Tech launches a new line of ASIC miners - Best W/GH/s ratio on: April 12, 2014, 09:42:37 PM
The technical data is available in the web site. It's a bit outdated. Upon signing an NDA we'll release all the needed information to start a design based on our 1st gen and 2nd gen ASICs. Multiple parties, companies and one collective already got the information.

The updated spec of our 2nd gen ASIC:

Voltage 0.63 V
Total Engines 193
Max frequency at TT corner 984 MHz
Performance 190 GHs
Power 65 W
Power/performance 0.34 W/GHs

Multiple voltages and overclocking points possible.

Does it make you more comfortable ?
Should I post working FPGA pictures ?
Verilog test bench ?

Seriously, we know what we're doing.
The ASICs will arrive on time, working. SP30 will be delivered on time and on spec.

Some more information on the system. SP30, like the SP10 will contains two ASICs boards and one management board.
The management board will contain the same TI Sitara processor and FPGA. Beside the FPGA, it's almost identical to Beagle Bone Black.
(Unlike other vendors, we don't ship with hobby boards...)
Each ASICs board contains 15 RockerBox ASICs. The total system output is expected to be over 5.5 TH/s
We've improved our DC2DC design, and we're testing it separately on a test board.

We won't release any information on our 3rd gen ASIC (PickAxe) beside stating again that the design goal is to compete and win in the EH/s (Exa Hash/s) era, while eradicating (by making obsolete) a well known northern farm.

I presume that you are just a marketroid. What you just did by saying "we know what we are doing" and "verilog testbench" is to suggest that you don't have any experience with designing power-limited and noise-limited ASICs. There is obviously a small possibility that someone in your team knows it, but intentionally told you to misinform. But I somehow doubt this had happened in Israel right after shabbat.

You could make an intelligent post without disclosing any proprietary info. Bitfury for example had posted max clock speed for his chip with all hashing engines running and with just one engine running. He also posted whole slew of timing-margin and noise-margin vs. supply voltage values.

If you have no detailed BSIM (or similar analog) models of your chips at this stage then you quite clearly aren't in the "know what we are doing" category but in the "CAD monkey" category. This doesn't bode well for the successful delivery. Simon Barber of Hashfast was the most recent example on this forum: "our chip will work because Apache Redhawk says so!"

PS. In the above message all "you" should be understood as "plural you" (i.e. whole company as opposed to the person posting) with the exception of the very first.
10  Bitcoin / Hardware / Re: [ANN] Spondoolies-Tech launches a new line of ASIC miners - Best W/GH/s ratio on: April 12, 2014, 08:20:40 PM
Needless to say, even in this relative trivial project we're doing verification + FPGA validation.

The exact status of the project:
We've submitted final net list to Global Unichip, the tapeout will be in the beginning of May.
One positive thing you could do to assuage the prospective customers is to post some concrete technical information about both your present chip and the future ones.

There is literally a lot of info that you could post without disclosing anything detrimental to the technical competitiveness of your project, e.g. some results of simulations like noise margins versus supply voltage.

If you need inspiration please go read bitfury's past posts.
11  Bitcoin / Project Development / Re: Trezor: Bitcoin hardware wallet on: April 09, 2014, 07:57:08 PM
some weeks ago i read about the product is ready but the plastic case wasnt manufactured in the right way. i think that was a lie. it cant be that plastic cases need months to produce...
It is my understanding that the plastic Trezors aren't 3D printed (not sturdy enough), but injection molded. Manufacturing a die for moulding definitely could take months, especially if the geometry of the design is difficult to mould properly. I remember from my earlier discussion here about the eyelet that one of the original designs was atrociously bad as far as reliable manufacturability.
12  Bitcoin / Hardware / Re: Tapeout discussion was: Swedish ASIC miner company on: April 06, 2014, 07:00:06 PM
I'm just quoting to preserve one of the worst self-burns in the history of Bitcointalk. Please don't delete my post, although it is trivial. The ambiguity in English language grammar is such a trap: Pharmacist dispensed with accuracy.
You do realize mask is before tapeout, right?

No, no it's not.  - - "Before wafer production can start, a Maskset needs to be ready."

first sentience...  "In electronics design, tape-out or tapeout is the final result of the design cycle for integrated circuits or printed circuit boards, the point at which the artwork for the photomask of a circuit is sent for manufacture."

uuuh, yeah, okay.

Oh I forget, this is the interweb, people feel entitled to their own reality.
You have that right I guess.
Doesn't change anything tho.
Did you even read them?

You do realize mask is before tapeout, right?

No, no it's not.  - - "Before wafer production can start, a Maskset needs to be ready."  (Quoted directly from the article)

First sentience...  "In electronics design, tape-out or tapeout is the final result of the design cycle for integrated circuits or printed circuit boards, the point at which the artwork for the photomask of a circuit is sent for manufacture."  (also a direct quote)

Mask is clearly a part of the design phase, and required BEFORE sent to fabrication,
and our chips have been sent to fab.  Unless Intel is wrong too, lol.
this may help you understand too...
The mask itself is used in the lithography process to actually print onto the silicon. It's like a transparent photo that radiation is passed thru to burn the chip design onto the silicon, making the chips. When they submitted the artwork, or "mask" to the manufacturer, that was "Tapeout".

Since you obviously didn't read it....

You are in denial, and should begin a 12 step program maybe?... 
Masking is complete before it can be sent to fab, simple as that.
One cannot tapeout without having a mask done.
The mask itself is used to print the circuits, so it's impossible to tapeout without it, because tapeout is the sending of the mask to manufacture the wafer.
13  Bitcoin / Hardware / Re: Cointerra power stepping vs wattage (vs hashrate) on: April 05, 2014, 11:57:26 PM
I doubt that anyone has any reliable data of this kind.

The key component of a miner is an un-binned CMOS chip where expected manufacturing tolerances are probably +/-25% or even +/-50%. I don't think that any of the vendor does any bin-sorting of their chips, anything that hashes and doesn't smoke is getting shipped to the customers.

Instead of investing into more true power meters I would suggest splicing sub-1-ohm resistors into the neutral wire of the extension cords. Just measure the voltage drop on them with any half-decent AC multimeter.

If you have reasonably US-electrical-code-conformant wiring this would be quite safe from accidents, especially after all I've seen here about GPU mines. But please don't follow my advice only if you are reasonably sure that children can't walk into your mine.

The child-safe option is to get a clamp-on magnetic AC current probe for your multimeter and just cut the outer layer of the power cord isolation to be able to clamp on a single wire out of three.

14  Bitcoin / Technical Support / Re: Command to remove unwanted accounts on: March 28, 2014, 06:39:24 PM
*bump* any update on this?
For the truly OCD people there are two choices that are much simpler than modifying the bitcoin client:

1) write a C/C++ wallet cleaner utility using the matching Berkeley_DB libraries
2) do db_backup/clean/db_restore using Berkeley_DB utilities. The backup format is textual and the wallet database structure is very simple, so the "clean" step can be written in any of the widely known text processing languages like awk or Perl.

Remember that when using Berkeley_DB utilities you may need to create an appropriate DB_CONFIG file to be really on the safe side. This was discussed before on this forum.
15  Bitcoin / Development & Technical Discussion / Re: network hardening or other ways to prevent forks in a war scenario on: March 27, 2014, 07:46:33 PM
moonbounce (a.k.a. EME)

We've discussed this before: "How do we deal with an internet blackout?"

The salient observation is: although the present Bitcoin network is p2p it actually emulates a broadcast medium.
16  Bitcoin / Hardware / Re: Swedish ASIC miner company on: October 01, 2013, 03:25:20 AM
One last thing to mention, and since the naysayers have to fall back to the "won't NOI" sour grapes position, it's sort of on topic here. 

That is, how bogus all the linear or constant-growth exponential calculators are, and why only a troll or fool would quote, let alone believe, those results.

There's a function used in mathematical biology modeling named the Gompertz function.  It's got a rich literature, and a pretty useful Wiki page. 

Basically, say you have a fixed food supply in a fixed space for a single-cell population.  The population will start to grow, at a faster and faster rate, reaching a maximum growth rate, and then, as food for any individual becomes relatively scarce with the increasing competition from growing population, growth slows and ultimately flatlines until there are changes in the external conditions, or mutations with the population that give a new strain a (temporary) competitive advantage.

If that doesn't sound like bitcoin mining to you, maybe you're in the wrong racket.

Somebody ought to produce a calculator that entails Gompertz parameter estimation (which are functions of power consumption, absolute hardware costs, etc.) to give people a chance to estimate the real economics, instead of calculations which have (I'm exaggerating here) more petahash on line in 2015 than there are gigawatts of electricity to power the network. 

I know, for a fact, that some exist.  Just not yet, it seems, in the public space.   
This wont be of much use, IMHO. If you try to squeeze Bitcoin into the Gompertz model you'll get an equivalent of mutation every two weeks (more precisely at every difficulty readjustment). I'm not saying it would be completely useless, I just don't see much of the predictive power from the formulation that you've described.
17  Bitcoin / Bitcoin Discussion / Re: Elizabeth T. Ploshay for Bitcoin Foundation board on: September 17, 2013, 11:22:24 PM
And I thought the 40 songs on Youtube about how Jesus is her best friend ever were ... special. Now I dare not look deeper into the abyss.
Thanks for taking it for the team, greyhawk.   Wink

Evangelical christian music, especially US-ian, is quite devoid of emotions. To be able to listen to something interesting you should try christian music from the countries that are predominately Roman-Catholic or Orthodox.

Here, listen to some christian hardcore punk from Eastern Europe, it will restore the blood circulation in your brain:

And by the way, linguistic experts tell me that the mechanical translation (e.g. Bing Translator) of the religious poetry (lyrics are in the "About" comment) is surprisingly good.
18  Bitcoin / Bitcoin Discussion / Re: We need Alan/etotheipi (Armory) as a fulltime-developer! Now! on: September 16, 2013, 09:22:09 PM
why are you always such a dick about things?  do you always see negatives in ppl?  i've only heard the core devs complain about you, not him.

and how would you know anything about being difficult to work with in re: to Alan?  have you worked with him?  Alan has been a star in the community from a user's perspective as every other comment here and on Reddit will attest to.  and Armory stands apart from bitsofproof and sx by far.

i'm willing to bet that anyone who's anything in Bitcoin and needs a usable daily wallet for their biz uses Armory.  no question in my mind it's that useful.

it's quite possible that he's a lone wolf as you describe but many great ppl have ventured out on their own in many industries over time and accomplished great things.  sometimes other ppl hold them back.
You know, computer science is not a popularity contest. I think gmaxwell recently tried to explain this to you and failed, but in a slightly different context.

I wish the site didn't crash and lose its discussion forum database. I would then just give you a links to the history of the California/Silicon Valley and the dotcom bubble. Those who don't know the history are condemned to repeat it. But because is now lost it is quite hard to show that history to the uninitiated.

It kinda doesn't matter wheter I'm a dick or a nice guy. I'm a computer scientist and that that is the only thing that should matter. Everything else is just a dressing, "social capital", "marketing", etc. But for you only things that matter are in the "everything else" category, you've already made a decision to not learn anything in the "computer science" category. One thing that you most definitely share with etotheipi is that you both are very emotional people, prone to thinking in the "us versus them" categories. But the subject here is cold and unemotional computer science, which really doesn't take sides.

I will repeat myself: no matter what you and etotheipi think about me right now, I wish him well. I do see him repeating simple mistakes that already have been made, but the documentation of those mistakes is gone with . I have not deleted or significantly edited any posts that I had made in etotheipi's threads. Anyone is free to search my posts for the mention of etotheipi and etotheipi's post for mentions of 2112 and make his own mind.

In the past, when I had to explain the above quoted concept to the non-scientists I had some success with using the following art analogy: imagine yourself having a choice to invest in Rembrand or Salvador Dali while they were still alive. Rembrand is well known for supervising painting by his pupils/apprentices and signing them only when they met his quality standards. On the other hand Salvador Dali is well known for signing the blank canvas and leaving painting to the random ghost-painters hired by the art merchants. It is completely unproductive do try to discuss which of the two painters was a better artist. What really matters to the investor is which one was better in the teamwork enterprise.

If you don't like painters analogy, try the film directors analogy with, say James Cameron and Michael Cimino.

But please remember that Bitcoin is not "art", although it may be used near the expressions like "state-of-the-art". Bitcoin (and its security) is cold and unemotional computer science.
19  Bitcoin / Bitcoin Discussion / Re: We need Alan/etotheipi (Armory) as a fulltime-developer! Now! on: September 16, 2013, 07:23:06 PM
interesting perspective.  

otoh, he will probably be the lead dev within the hierarchy of Armory.  afterall, he wrote the thing.  and it is the best wallet out there while contributing to the community in a big way.  
Exactly that's where the problem starts: "being the lead developer". etotheipi was/is rather short-fused personality. The typical (at least 50/50) trajectory of such a startup is:

1) several iterations of of trying to work with peers and ending up with a quarrels and no new code produced
2) hiring servants/completely unskilled programmers that are very supplicative but produce very low quality software

But it is also possible that etotheipi will turn around and learn how to work with teams. 

where would we be without it?
Yeah, that is the question. The other competing full-node/wallet implementations are also written by lone wolfs:

A) bitsofproof by grau
B) sx by genjix
20  Bitcoin / Bitcoin Discussion / Re: We need Alan/etotheipi (Armory) as a fulltime-developer! Now! on: September 16, 2013, 06:31:00 PM
TBH, i've never understood why Alan has never been asked to be a core dev.
etotheipi is a fairly classic example of a "lone wolf" coder/programmer/software engineer. Adding money and co-worker/peer programmers into this situation quite often (at least 50/50) causes "pouring oil into the fire" situation.

On the other hand he's young (recent graduate) and may not be irreversibly set into that modus operandi.

Time will show...
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