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2701  Bitcoin / Mining / Re: Deepceleron's completely optional and mildly useful pool guide to Bitcoin Miners on: December 20, 2011, 03:02:48 PM
Bumpity. This thread is relevant to your interests.
2702  Bitcoin / Pools / Re: [162 Gh/s] Bitcoins.lc - No invalid blocks, Instant payout, EU, IPv6, 0% fee, LP on: December 20, 2011, 01:49:27 PM
Why is my block reward so small when block is based under 2000 shares. Poolhopping?

Yes. I no longer mine here because of it. Still waiting for PPLNS; Jine actually kicked me from IRC months ago, not believing that hoppers hurt proportional pool users and unable to be convinced.

Notice the hashrate spikes from 150 to 400 at start of new block, you have to share lucky rounds with 3x more miners:
http://www.bitcoins.lc/graphs

and this:



I could also refer to Meni Rosenfeld's mining pool reward systems analysis (PDF):
"Proportional: ...This is the worst reward system and must not be used."
2703  Bitcoin / Bitcoin Discussion / Re: Santa is in town? Price upswing! on: December 20, 2011, 01:34:41 PM
Most of my gifts this year are physical bitcoins so this is definitely a pleasant surprise. Makes traditional money look even more weak.

You do realize that for most people they are the equivalent of Chuck-E-Cheese tokens, right?
2704  Bitcoin / Project Development / Re: Warning to web developers: My google analytics attack on: December 20, 2011, 09:01:05 AM
This attack is useful when, a victim is on an unsafe network such as an open wifi hotspot, and intentionally avoids doing anything important while on the network. The victim goes home, but the attackers modified 3rd party script is still cached, and continues to run arbitrary javascript on any site with the "infected" 3rd party script.

The victim might start to browse different websites that are more sensitive once they are no longer on an untrustworthy network that utilize the 3rd party script.
That's why you configure your browser to delete all cached data when you close it.

While clearing your cache would fix this, hardly anyone actually has their browsers configured to do that.  Most people don't even consider CDNs such as google analytics an attack vector.  If we want non-technical users able to securely browse the internet, then these security problems (simple as many of them are) need to be brought to people's attention.


When I close Firefox it should automatically clear all:
☑ Browsing History    ☑ Cache


Adblock Filter Rule:
||google-analytics.com^
☑ Enabled


As far as DNS queries making it through my firewall to any DNS server other than my own...
/sbin/iptables -A OUTPUT -p udp -o eth1 --dport 53 --sport 1024:65535 -j DROP 


2705  Economy / Trading Discussion / Re: Stay away from Cryptoxchange as Bitcoins go in but Fiat don't come out. on: December 20, 2011, 08:43:33 AM
Time to start buying BTC...
2706  Bitcoin / Development & Technical Discussion / Re: [PULL] private key and wallet export/import on: December 20, 2011, 08:09:37 AM
Now all we need is a way to get rid of the block chain scan...

either an index built on first use, or perhaps an abbreviated one maintained in memory so it is only built once per invocation of bitcoind (e.g. a tree/hashtable that maps the first 32bits of hash160 to a list of pointers to block indexes, so memory usage isn't ridiculous)
Maybe Bitcoin shouldn't automatically rescan after a key import, but the new "rescan" button starts blinking to insist you should do it, and a per-address flag is set in the wallet to indicate the block chain hasn't been analyzed yet for that address's true balance. Progress bar during online rescan, etc. I suppose a method for RPC also needs to be implemented, or maybe auto-rescan is limited to once every 15 minutes or such.

A full index could be significant in size. When it gets messed up do we then get to do a -reindex? How about when it is corrupted and points to nonexistent blocks and crashes bitcoin, etc.
2707  Economy / Auctions / Re: The contents of xxxx on: December 20, 2011, 07:43:44 AM
I guess you are stuck using that address, since auction forum posts can't be edited, and the address is in other poster's subjects anyway...
2708  Economy / Auctions / Re: The contents of 167gBwPnorxou8mKF2CUr95y7xdfgpfxsd (round 2) on: December 20, 2011, 07:37:24 AM
If Instawallet is scraping money out of your address automatically, you should create a real wallet address for this game, transfer the payments so far to that address, and edit the first post giving that address.

It looks like you have one high bid of 1.41421356 so far (the sender didn't follow step 3 to claim it by posting here too, and Googling the addresses doesn't provide any owner, so I'll claim it!), and two donates of .01.
2709  Other / CPU/GPU Bitcoin mining hardware / Re: Information on ATI 7xxx Series Dec. 5th! on: December 20, 2011, 07:15:00 AM
Interesting that the slide above shows SHA256 performance, it's almost like AMD figured out who was buying all those video cards...
2710  Bitcoin / Bitcoin Discussion / Re: Bitcoin100: 2.012 BTC for Ron Paul 2012 on: December 20, 2011, 07:07:43 AM
Unfortunately, PayPal contributes in increments of $1000.
2711  Bitcoin / Bitcoin Discussion / Re: Bitcoin TV episode CONFIRMED!!! on: December 20, 2011, 06:51:29 AM
CBS Press Release: http://www.cbspressexpress.com/cbs-entertainment/releases/view?id=30177

“Bitcoin For Dummies” – Alicia defends a lawyer who hires the firm after the government arrests him for not revealing the name of an anonymous client: a mysterious computer programmer who illegally invented a new online currency, on “THE GOOD WIFE,” Sunday, Jan. 15 (9:00-10:00 PM, ET/PT) on the CBS Television.  Jason Biggs (“American Pie”) guest stars as Alicia’s latest client.  Carrie Preston (“True Blood”) returns as Elsbeth Tascioni.


Bitcoin: for dummies. Illegal invention. Exactly the spin expected from CBS corporation types. The company that bought CNet for $1.8 Billion dollars, so they could repackage open source software with malware.

I'll have to speed up the writing on my own "For Dummies" book...

2712  Economy / Speculation / Re: Prediction contest: when will bitcoin break $4? or will it never break $4? on: December 20, 2011, 06:37:14 AM
DUMB BEARS GETTING SLAUGHTERED!



2713  Bitcoin / Bitcoin Discussion / Re: Santa is in town? Price upswing! on: December 20, 2011, 06:26:31 AM
Looks like all the miners are re-firing up their rigs.

Not so much...
2714  Bitcoin / Mining software (miners) / Re: Catalyst 11.12 driver release with Stream SDK 2.6 on: December 20, 2011, 05:46:10 AM
There are several things that may restore performance with the new 2.6 Stream SDK/OpenCL included with these drivers:

1. compile pyopencl using newest SDK (I plan to do this when I am done goofing off...I mean done working),
  - this is precompiled in miner exe using the author's SDK version, and I would assume most miners running from source haven't recompiled their python install.

2. tune and optimize OpenCL miner cores to take advantage of new SDK features (calling the OpenCL gurus back).
  - some of the new GPU features being exposed may be beneficial for mining/SHA256 hashing

The 2.6 SDK release notes were delayed but finally came out:

Key features supported in SDK 2.6 and the Catalyst 11.12 drivers include:
• OpenCL runtime integration into Linux and Windows® Catalyst drivers.
• Inclusion of the Khronos C++ wrapper API.
• Multi-GPU support on Linux platforms.
• PX5 support.
• Preview: Support for AVX instructions on CPUs that support AVX.
• Support for FMA4 instructions in OpenCL built-in function libraries on CPUs that support
FMA4.
• Kernel reflection, query kernel parameters, and enable use of OpenCL kernels in data-driven applications.
• Support for atomic counters on APUs.
• Redesign of OpenCL run-time on CPU, significantly improving performance.
• Support for the cl_amd_media_ops2 extension, exposing hardware capabilities for
accelerating image-related processing.
• Async copies preview (set environment variable GPU_ASYNC_MEM_COPY=2 to enable).
The OpenCLTM 1.2 preview includes the following capabilities (requires 8.93.10 preview drivers):
• Host access flags for memory objects enables more efficient buffer handling.
• Pattern-based GPU buffer and image initialization eliminates need for certain buffer/image transfers.
• Memory objects migration supports early transfer of buffers in preparation for when they are needed.
• New generalized image creation API.
• Enhanced image/buffer map operations.
• OpenCL 1.2 CPU device partition, including partition of a CPU after addition to a context.
• Generalized 1D and 2D images, image arrays, and image<-->buffer interop.
The 8.93.10 preview drivers also enable use of the static C++ kernel language.
gDEBugger version 6.1 is a major improvement in performance and robustness over version 6.0.
It can be downloaded for use with this SDK from http://developer.amd.com/gDEBugger.
• Integrated with Microsoft® Visual Studio®


There is also an OpenCL Static C++ Kernel Language ExtensionThis might allow a C++ rewrite for those who want to start all over.
2715  Economy / Goods / Re: [SELLING] Small home dwellings for Bitcoin on: December 20, 2011, 05:25:36 AM
It's crazy to think how much house people think they need these days. They laugh at my small house built in the '30's because it's only like 850 sq ft. But it's solid. I was driving through a neighborhood last night where the houses were at least 2500 sq ft each and go up to 5100. They looked absolutely horrible. They looked cheap. You know it's bad when people look at your house and say "Is that an apartment building?"

85' x 10' also equals 850 ft:

2716  Economy / Goods / Re: [SELLING] Small home dwellings for Bitcoin on: December 20, 2011, 04:53:23 AM
I'm terrible at envisioning sizes, but are the shacks in the pic about the same size?

under 400 sq ft = smaller than 20'x20' (or 6 x 6 meters), so yes, pretty much the same size.

This temporary garage is 20'x20', so this size or smaller:


This portable building is 16x16 = 256 sq ft:

2717  Bitcoin / Mining software (miners) / Re: *Catalyst 12.1 Preview* Decreased performance, anyone else confirm? on: December 18, 2011, 02:48:44 AM
I used both CGminer and GUIMiner and I got the same drop with each. I think it's card dependent.

It would be prudent to post which series and how much of a perfomance drop you experience, on 5770, it was good for -15%. Perhaps 6xxx is more optimized (or less unoptimized) in this OpenCL.
2718  Other / Beginners & Help / Re: Spend bitcoins from specific address on: December 18, 2011, 02:15:30 AM
Yeah, I've already imported the keys into my computer's wallet.
Importing a private key into one wallet doesn't prevent you from importing it into another. You can start with a blank wallet (make a second -datadir or a Bitcoin install on a second PC or virtual machine), import just the one key and send them all. The main wallet where you have multiple addresses will reflect the updated balance instantly if you leave it running, or after the transaction's block is downloaded the next time you start it.
2719  Other / Off-topic / Re: Indeed you were heedless of this on: December 18, 2011, 01:54:48 AM
Interestingly, the linked Quran search I provided earlier gives this translation, which removes the obfuscation:

[50.22] Certainly you were heedless of it, but now We have removed from you your veil, so your sight today is sharp.

2720  Other / Off-topic / Re: From an Arab ruler to his People on: December 17, 2011, 09:11:59 AM
So the commenter is speaking in the voice of a figurative propped-up dictator, to articulate what some might be thinking about how the leader of a country views the populace...you pick the country.

Some countries have a majority that would prefer a religious state government, so uprising against a dictator is not necessarily a win for individual personal liberties for all.

Al Jazeera, like the Christian Science Monitor, has good journalism that is not heavily biased by it's origin, in fact it could be considered liberal in the region. It is certainly not the FOX news of the Taliban. Just because NBC shows an Obama speech or allows a political pundit to share their controversial views doesn't mean that the network is tainted with bias, for example.
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