They are being subsidized by a magic money-making algorithm, not the community. The mining reward is well thought out as a way of releasing the currency and encouraging blockchain difficulty. The only thing encouraging the inclusion of transactions in the generated block are transaction fees, which recently are approaching zero.

Maybe they are saying FU to including transactions that have no economic benefit. If people started including 0.1+ BTC fees (which is like the minimum you'd pay with PayPal), that would encourage miners with no interest other than financial gain not to miss out on the extra income.

More likely it is easier for their operation to not update transactions with getworks/etc. If they have a botnet that is reducing the possibility of detection by only transmitting new blocks (e.g. just a single open long poll to a command and control server), they can't include transactions other than old ones, ones that have already been passed on by the last block's miner.

The smaller of +100Mhz or +20% is +100Mhz in all cases, you would need core clock under 500MHz for the 20% rule to take effect. "Running stable for 24 hrs" etc doesn't matter because these are easy overclocks, you just want to run the miner until it has results at least xxx.xMhash/s stable accuracy.

Note that running a lower GPU core overclock for benchmarking will also affect the "sweet spot" for memory underclock on 2.1-2.5 SDKs. My own research shows that changing a 5770 from 1000->850MHz will change the best memory speed from 295MHz to 270Mhz. This is important to note both for this competition, and for trying these results on your own miner when you want to go back to maximum overclock.

Here are the official AMD stock core clocks of common mining GPUs, and their "competition" overclock of +100Mhz (which is significantly lower than typically attainable, but should be achievable by all [except perhaps 7970 @ 1025MHz]):

Model	Shaders	Stock MHz	Overclock
5770	800	850	950
5830	1120	800	900
5850	1440	725	825
5870	1600	850	950
5970	3200	725	825
Model	Shaders	Stock	Overclock
6850	960	775	875
6870	1120	900	1000
6950	1408	800	900
6970	1536	880	980
6990	3072	830	930
Model	Shaders	Stock	Overclock
7950	1792	800	900
7970	2048	925	1025

(Note the table above highlights the numbering sham that is the 6xxx series; a 5830 gets about the same hashrate as a 6870 when pushed to the similar max overclock, as they have the same number of vertex shader cores.)

What you need to do is put your bitcoin address in the search box on http://blockexplorer.com/. That will show your Bitcoin account balance. Indeed you may have been sent money and not have waited for all the transaction blocks to download on your Bitcoin client.

Buying serial numbers that could have been easily skimmed from seller's place of work, shelf surfing the Gamestop before re-shrinkwrapping, or just obtained off a software pirate site? Might as well pirate it yourself, because an email with a serial number is not proof of ownership in any way that matters.

255.255.255.255 called, and said to bump this thread.

I found a former employee's eBay listings for missing stuff in the company I worked for, it was fun calling him at home and listening to him on speakerphone try to explain his way out of it. Of course calling him was just so we could listen to the cops beating on his apartment door and arresting him.

Owned LOL

That's the right answer to the wrong question.

When a Bitcoin block is found, the node that found it broadcasts it out to other nodes. blockchain.info is connected to hundreds of nodes, so by listening in on the new block announcements, it can quickly determine which Bitcoin node on which IP address found the block.

Then they probably wouldn't notice if you just took a few computers home with you for your "pockets benefit", either...

Go to the "change password" feature. Type a whole bunch of characters you won't remember in as your new password. Press save.

Actually deleting an account would be disruptive to a forum, parts of a conversation would go missing and make threads into nonsense, so it's normally not done.

The 5770 is a good card for the money, overclocked with the right settings it can get you 220+ mhash/s, which is better than some significantly more expensive 68xx cards (or anything nVidia). I assume at this point you have joined a mining pool where you are mining bitcoins. That card will get you about .14 BTC a day (about $0.70 worth) - not bad, since you are making free money with your computer.

Like any currency that has significant value, begging for it (if that's the kind of "tips" you are looking for) is not as productive as actually selling goods for bitcoin or exchanging your old-fashioned money for bitcoins to buy things.

See analogy above for why this is a bad idea, one bad crash and you lose everything in either case... and why giving you advice would have to be more like "training course" instead of "helpful tips".

The first thing I would do is determine if the problem lies with network connectivity or a Bitcoin database problem. This can be quickly determined by completely closing Bitcoin (or even better, disabling the option "Start Bitcoin on window system startup" and restarting the machine), rename the Bitcoin data directory, and restart Bitcoin. This will create a new wallet, empty blockchain, and reset settings to default.

Here are commands to rename the Bitcoin data directory in a terminal window:

$cd (change to home directory)
$ls -la (verify that you see the .bitcoin directory in this directory listing)
$mv .bitcoin .bitcoin-backup (rename the bitcoin data directory)
$ls -la (verify it was renamed)

Now run Bitcoin. It will create a new .bitcoin directory when it runs. You should start getting connections and the block count should start increasing shortly. If it does not start downloading blocks, than you have some networking problem, such as connections being partially blocked, corrupted program install, etc.

If Bitcoin starts downloading blocks again with the fresh data directory, likely the blockchain data files have corruption, although first we should check if permissions were altered on your bitcoin data files. In the the new test .bitcoin directory look at the permissions and owner of the blkindex.dat and blk0001.dat - compare that your backup's directory's permissions and owner on these files, they should be the same.

If a new blank data directory works, and the permissions look correct on your old directory, then likely the blockchain is corrupted. You can then close Bitcoin completely, rename the "test" directory from .bitcoin to .bitcoin-blank, and put back your .bitcoin-backup as .bitcoin again. Delete the blkindex.dat file, blk0001.dat, and any files in the database subdirectory. You can then either restart Bitcoin and let it download the whole blockchain again for a day, or download and use the direct-download blockchain files as outlined here.

or

Not relevant.

This thread is for finding the fastest software miner settings.

One may overclock more than another, but the competition is to find the fastest hashing miner at a particular overclock.

The default settings for a new Bitcoin install are for it to go minimized to the system tray when you press the close button. Look for it running with the yellow "B" symbol by the clock.

If you have that many parts (enough to build another computer), then you should build that other computer and mine with it. When it works fine, then you should have bad main system and good parts system. Eventually swapping components one at a time between the systems (until the only thing not swapped is the motherboard in the case), the problem will move to the other machine, or you have a bad motherboard.

I have about a dozen surplus solid state relays like this one in 10A and 20A. They are used for industrial control, and are sized (and priced) more for controlling an entire circuit than just one machine, but the 10A ones would be appropriate for a 1000w rig. They are off by default and need 3-32V to turn them on, so a simple parallel interface would need to hold them high, or with a 12v power supply running them with pull-down resistors, you could design a circuit that turns them off with a momentary +12V signal input to ground.



PS I have melted those little blue circuit board relays into goo before, they might say 10A, but they arc inside when they turn off, which a zero-cross solid state relay doesn't do.

Bitcoin is it's own currency, like the Euro, or Japanese yen, with the difference that it is not created by a government. It has value because it can be used to instantly transfer money to others digitally around the world with very little fee, the supply is limited, and they are hard to produce. Just like obtaining a foreign currency, you have to find someone willing to trade $ for BTC, with most people using a currency exchange like http://mtgox.com. You can also trade them in person, hand me $5 and I'll send you 1.0 bitcoins. Credit card payments and Paypal can be disputed/cancelled/reversed by the buyer, so nobody experienced will trust a credit card payment for Bitcoin; Bitcoin is more trustworthy than the credit card payment.

If you are interested, I would recommend that you download and install the Bitcoin client software, and leave it running so that it updates (it can take a day of updating on the network for it to be ready to use, it must download the transaction ledger that tracks the balances of everyone else's addresses). When you install it, it will create a Bitcoin address for you that you can give to others to send money to you. There are several sites (like the Bitcoin faucet) or people that will send small amounts to your Bitcoin wallet so you can see how it works.

They are not optional, except that there is one pool (Eligius) that includes some transactions that don't include the mandatory fee for low priority transactions when they mine a block. Their exact rules for what they will include are undisclosed (really small spammy payments still don't get included), and they only mine a block every few hours. Without such a pool that has written a custom version of Bitcoin with different rules, payments not including the fee when the mainline client requests inclusion of one would never be processed.