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Showing 13 of 13 results by bitcork
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Board Service Announcements
Re: ** STEAM GAMES FOR BITCOIN ** huge list, prices lower than retail ** NEW GAMES!
by
bitcork
on 10/11/2013, 16:17:00 UTC
Reply from steamgames after sending payment was fast, code was legit. This an AAA seller of AAA FPS, nuff said!
Post
Topic
Board Armory
Re: Anyone use raspberry pi with armory? NT
by
bitcork
on 16/06/2013, 16:43:05 UTC
 Shocked i'll be monitoring this thread closely and wait for any updates from etotheipi. RPi+Armory would be a great leap in this realm..  
Post
Topic
Board Bitcoin Discussion
Re: Boycott 0.8.2
by
bitcork
on 06/05/2013, 07:13:45 UTC
i am a simpleton and a newbie but after i read this reddit, i feel better:

http://www.reddit.com/r/Bitcoin/comments/1drocs/to_everyone_wringing_their_hands_over_the_recent/

disclosure: i am not a programmer
Post
Topic
Board Mining support
Re: What PCIe 16->1x risers do YOU rely on?
by
bitcork
on 05/05/2013, 09:44:33 UTC
Good Find!  That may well be the problem if I'm reading that right.  I'm going to mod (https://bitcointalk.org/index.php?topic=76121.0) a spare 16->1x riser to have molex over the next few days (hopefully tomorrow) and will retest the system for stability and report back.

In the mean time... Anyone want to chime in on what manufacturers/vendors you like to use?

I think Cablesaurus is the only molex-modded seller. I'd look into how to make my own but with BTC (and LTC   Wink ) time=difficultie$
Post
Topic
Board Development & Technical Discussion
Re: Scaling BTC - transaction fees and times cf demand
by
bitcork
on 05/05/2013, 09:39:03 UTC
When did the offending transactions occur?
If recent, I was pondering the same issue today, especially now that the Chinese have overtaken the rest of the world in wallet downloads on Sourceforge. Ever since a documentary on BTC aired a couple of days ago on CCTV, Sourceforge has been slower than usual.
I reformatted my PC today and downloading the blockchain seemed to take longer than usual too.
It wouldn't surprise me if all of this is due to the new Asian burden placed on blockchain, after all, miners subsidize transactions right? And there certainly couldn't have been a dramatic increase in Chinese miners..
My guess is that this will be a transitory problem now that ASICs are hitting the market and difficulty will decrease substantially.
Although we're still waiting for India to join the party...
Post
Topic
Board Mining support
Re: What PCIe 16->1x risers do YOU rely on?
by
bitcork
on 05/05/2013, 01:28:15 UTC
+1

I will be monitoring this thread.

Disclosure: I recently ordered PCI-e16X->PCI1X w/molex risers from Cablesaurus.

PS: Anyone got any idea how long they take to ship? I ordered a week ago.. Kiss
Post
Topic
Board Trading Discussion
Re: Spreadsheets
by
bitcork
on 04/05/2013, 21:20:14 UTC
+1

interested  Kiss
Post
Topic
Board Beginners & Help
Re: Cold-Storage Paper Wallet Key Certificate Template
by
bitcork
on 30/04/2013, 22:49:13 UTC
an example..






and here's a screencap of analysis for that 50-character password (http://rumkin.com/tools/password/passchk.php)

just remembering a long (50char) sentence is the most effective kind of password.



Post
Topic
Board Beginners & Help
Re: Cold-Storage Paper Wallet Key Certificate Template
by
bitcork
on 30/04/2013, 22:17:43 UTC
Nice work, that really looks good (Adobe Illustrator?).

But... For what exactly do you want to use it? A paper wallet (=private key on paper)? Why should it make any sense if a private key on paper looks official?

Illustrator+Photoshop.

I'm going to use them to give some buddies a few Litecoin in a wallet.dat burned on a CD with one of these certificates. They can always print a new certificate and set a new encryption password.

They could also be useful if you want to pay someone offline. You can burn a wallet.dat onto a CD and give them the encryption password on one of these, kind of like a deed. Of course that requires them to trust you since you could have made an extra copy and you already have their password.

To me, they'll be useful to quickly identify which password to use for extra wallets I have. That may be how they're most useful -- for organization -- or at least that's what I had in mind when I made them.
And some people (my mom) just need things that look official. I wouldn't have been able to convince her to create a wallet and buy a few bitcoins without an official-looking paper.  Cool

I'll eventually print out a few of these and put at least one (wrapped in foil so bled-through permanent marker can't be read) in a fire safe deposit box.
Post
Topic
Board Beginners & Help
Topic OP
Cold-Storage Paper Wallet Key Certificate Template
by
bitcork
on 30/04/2013, 20:28:20 UTC
Hey everyone, I've been lurkin' for a few weeks, my first poast. Another newb here, getting into BTC/LTC.

I thought it'd be fun to create an official-looking certificate for people who, like my mom, don't quite understand cryptocurrencies yet; holding a physical paper with official-looking Guilloché patterns helped!
So I spent the weekend having some fun with patterns and colours with the intent of creating something in the spirit of Bitcoin's gold and Litecoin's silver essences.
These certificates may even be useful for the uninitiated creating new wallets. You can give them a blank sheet with instructions to fill out the blank spaces (5 rows, 10 columns) and to "never show it to anyone and never lose it!" I also included a blank space on the left for a title or other info.
I recommend using a permanent marker or any kind of marker that bleeds through the paper to ensure a good chemical bond with the ink (inkjets are usually rated for 100+ years) and paper.

Using a password of 50 characters (maximum on these sheets) yields an average of ~200 entropy bits, an "overkill" level of security. You can find out your password's entropy bit measurement here: http://rumkin.com/tools/password/passchk.php

I created PDF's in CMYK and sRGB gamuts.
I also created hi-res TIFF's for those of you out there who don't trust PDF's (you can change a TIFF's gamut in most photo editors).
I enabled Photoshop editing permissions when I created the PDF's so feel free to modify them as needed.
They're all 2550x3300 pixels @ 300 PPI, 8x11 (letter) sheet.

 Grin Cheesy Wink Grin I'm releasing them with no copyright but if you find them useful or just pretty to look at, send a new guy some coin, my addresses are in my signature.  Cool Tongue Roll Eyes Grin Cheesy

Let me know if there's anything I can do to improve them or if anyone wants a certificate like this for another cryptocurrency.

I've uploaded everything to Mega.co.nz.
If my Mega account bandwidth runs out (free users get 1Tb monthly I believe), let me know as I have other file hosts but am too lazy to upload to others at the moment.




http://i.imgur.com/MOt4OJW.jpg




http://i.imgur.com/0ZofoMO.jpg



TIFF Download Links

Bitcoin Cold Wallet Encryption Key.tif (24.1 MB)
https://mega.co.nz/#!QFw3CbJL!OYPCyx-JueFZOEL9ZhZfR2GJASduFIFvPmbsfBq0Xp8

Litecoin Cold Wallet Encryption Key.tif (24.1 MB)
https://mega.co.nz/#!xBh3XB7Y!QJ4aswoMGdWgSKTXG4p5tjL-uuo-uZ9Wi14TuVL_fNc


PDF Download Links

Bitcoin Cold Wallet Encryption Key CMYK.pdf (60.3 MB)
https://mega.co.nz/#!sJgwkDqZ!SpLOKzB4QEEUe-RG4Djs92T02Y5AzSW8MXu5RNexA88

Bitcoin Cold Wallet Encryption Key sRGB.pdf (59.5 MB)
https://mega.co.nz/#!UNBEmJJJ!HcfKdmHtfYh4asXTK-e24TxJW0o-31rEWH567A7gURc

Litecoin Cold Wallet Encryption Key CMYK.pdf (56.0 MB)
https://mega.co.nz/#!kYhm0AjY!JZiF9TWdsz2SPFxrFYGRKg3YDDo-FnyPq7NXYDEq3xE

Litecoin Cold Wallet Encryption Key sRGB.pdf (53.5 MB)
https://mega.co.nz/#!8Bp2RJAQ!Jo5eIgVy3h-_Yi4sy7DelhXX2zhrgnBBrR14OIXOwW8


Post
Topic
Board Beginners & Help
Re: Will the litecoin ever overtake the bitcoin?
by
bitcork
on 30/04/2013, 14:19:34 UTC
Based on Bitcoin's ubiquity so far, it is doubtful Litecoin will overtake Bitcoin in value although it wouldn't surprise me if Litecoin became very important as mentioned above, "silver to Bitcoin's gold".
Post
Topic
Board Beginners & Help
Re: My new mining rig - quad 7970 - Going for 3Gh/s
by
bitcork
on 30/04/2013, 03:44:21 UTC

Something interesting happened though, I'm not exactly sure what but I think cgminer might have overridden my clock values from CCC. I saw this and just had to take a screenshot though  Grin

http://i879.photobucket.com/albums/ab357/pontiacg5_2010/miner_zps617f76dd.jpg

This was the crash I had driving home from work. Makes a little more sense now, kinda...



CGMiner has excellent OC controls. I'm no GUIMiner expert but maybe it's modifying your GPU's engine/memory while GUIMiner tries to do it's own thing? I don't mine with GUIMiner but AFAIK, it was built on CGMiner, which has it's own (excellent) OC controls. I know that some settings in CGMiner (GUIMiner?), when not set properly, can give higher-than-actual hash rates. Don't quote me but I think they're the "intensity" and "thread concurrency" settings. I'd be surprised if GUIMiner didn't have these settings built in.

If you want help setting up CGMiner, just download the compiled EXE from ckolivas (source code is on Github if you want to compile, otherwise, he hosts the latest version of CGMiner here: http://ck.kolivas.org/apps/cgminer/)

Since we have the same video cards, you can probably just use my CGMiner config settings (took me ALOT of lurking to figure them out). Copy and past the following into CGMiner's "cgminer.conf" file:

Quote
{
"pools" : [
   {
      "url" : "stratum+tcp://poolname.com:port",
      "user" : "username",
      "pass" : "password"      
   },
   {
      "url" : "stratum+tcp://poolname.com:port",
      "user" : "username",
      "pass" : "password"      
   },
   {
      "url" : "http://poolname.com:port",
      "user" : "username",
      "pass" : "password"
   }
],
"intensity" : "13,13",
"vectors" : "1,1",
"worksize" : "256,256",
"lookup-gap" : "2,2",
"thread-concurrency" : "22400,22400",
"gpu-engine" : "0-975,1050",
"gpu-memclock" : "0-1600,1625",
"gpu-powertune" : "20,20",
"temp-cutoff" : "84,84",
"temp-overheat" : "80,80",
"temp-target" : "75,75",
"api-port" : "4028",
"expiry" : "120",
"gpu-dyninterval" : "7",
"gpu-platform" : "0",
"gpu-threads" : "1",
"hotplug" : "5",
"log" : "5",
"no-pool-disable" : true,
"queue" : "1",
"scan-time" : "60",
"temp-hysteresis" : "3",
"shares" : "0",
"kernel-path" : "/usr/local/bin"
}

You can't make intensity go above 13 on our cards.

You'll also want to create a .bat (batch, "bash") file with these contents:

Quote
setx GPU_USE_SYNC_OBJECTS 1
setx GPU_MAX_ALLOC_PERCENT 100
color F2
cgminer

Once you create that batch file, put it in the cgminer folder and run it from there. I didn't even install the OC utility on my rig, just installed the OS, GPU driver (AMD 12.8 with APP SDK 2.8 included, you need APP SDK), DirectX (may not be necessary), and CGMiner.
And Cablesaurus' lead time is ~7 days right? That's what I thought I read when I ordered. I'd be PO'd if I have to wait longer, not that I have the extra GPU's to plug into PCI 1x yet  Cry Roll Eyes

Post
Topic
Board Beginners & Help
Re: My new mining rig - quad 7970 - Going for 3Gh/s
by
bitcork
on 30/04/2013, 00:32:24 UTC
Amazing thread, sorry for the long poast guise, just starting out on these forums and I enjoy typing  Grin

Do we all agree that this rig at 3Gh/s would net about 55 Bitcoins in a year at a 2% difficulty per month increase?...according to the calculator I used.

So, an approx. $2500 investment would bring back about $7500 in a year at $136 price of Bitcoin at the time of this post?

Is this how the math should work?

A true Newbie question.....


Not quite but you have a grasp of the miner's dilemma. Difficulty will not increase at 2%/monthly since ASICs are hitting the scene. Explore alternative cryptocurrencies like PPCoin or Litecoin. Expect them to flood with former Bitcoin miners as ASICs continue to penetrate the market.



My time is worthless I guess haha  Grin



'Tis a miner's life! I just think about how lucky we got it compared to San Francisco 1849, they had to give up air conditioning and consider the idea of spooning with other men for warmth!


Do we all agree that this rig at 3Gh/s would net about 55 Bitcoins in a year at a 2% difficulty per month increase?...according to the calculator I used.

So, an approx. $2500 investment would bring back about $7500 in a year at $136 price of Bitcoin at the time of this post?

Is this how the math should work?

A true Newbie question.....

can you share the link of the calculator?


And this one: http://bitclockers.com/miningcalculator


I have 2 computers with 2x 7970 in each.. I have a 1000W power supply an dthe other computer has 1200 W power supply, Can someone help me how much my electricity gonna cost? .30 per/kilowatt ... Is that true that 2 cards my not use the whole power from the computer so lets say 1200W power supply is only draining 600W?


Yes, it is true that although you have a 1200W PSU, you will not draw that amount all the time. Chances are you never will even reach that limit, even for only second. I have 2x7970s (Gigabyte non-GHz ed.) and they each draw about 150W @ 551KH/s mining LTC. Windows Task Manager monitoring reports zero CPU and disk usage. DDR3 RAM usage is 1Gb (out of 4). I'm using cgminer 3.0.0 and Win8 x64. I do only pay $0.07 for electricity so check your profitability, your electric costs are somewhat on the high end of the spectrum. Are you located rurally?



My riser cables aren't marked as shipped yet either! I paid good money for US shipped cables! WTF!!

Thank you to everyone else for the nice comments on my case!

Your case is indeed enviable! I would just take out one pair of 120mm fans on either side to give the hot air a place to escape. I imagine you expected to push the hot air to the middle and then let the GPU fans push down. Like I mentioned above, I have 2x7970s and I just left the PC case open and pointed a desk fan at them, solved all my temperature problems (one was running at upper 80s and the other at upper 90s, not acceptable for 24/7 use). The desk fan uses just .05KWh so it's a cost I can certainly afford especially since I have no other way to cool my GPUs enough at 550KH/s!

I would also check and see if the power connectors on your mobo are strong enough (I suspect they are). I haven't read about anyone having PCI-e problems with your particular mobo, may be something worth investigating. You can always buy custom-made MOLEX-powered PCI-e risers from Cablesaurus: http://www.cablesaurus.com/.