74 posts • joined Thursday 30th July 2009 10:58 GMT
Re: Nice... no mention of how the very first Bitcoins were minted though?
Not strictly true either. The difficulty of mining Bitcoin doesn't increase exponentially. The difficulty of mining is automatically adjusted - either up or down.
Essentially, the next hash is computed from, amongst other things, the hash of the previous block's transactions - which can't be predicted ahead of time - so work on mining the hash which comes after the next one can't be done ahead of time.
That 'next' hash which is being mined needs to have a specific number of leading zeros. The number of these leading zeros that is required varies depending on, essentially, how much world-wide computing power is dedicated to the task of mining. If the protocol detects that megatons of computer power is applied, the number of leading zeroes is increased, making the mining operation much more difficult, and keeping the rate at which these hashes are found constant (at about one every ten minutes.
If the amount of computing power which is mining was decreased (meaning that it would take longer to stumble upon a hash that fits the requirements), then, after a while, the protocol will decrease the number of leading zeros required in the 'next' hash - making the mining operation easier.
All that effort/time/money people put into mining simply makes the mining difficult and much more expensive. The rate at which someone can find Bitcoins remains relatively constant. The number of Bitcoins found each time will be reduced as time goes on. After a while, mining operations will produce no more Bitcoins.
At that time, all these mining operations will stop, and the hashing requirements will be relatively easy.
Copy'n'pasting from the Bitcoin FAQ at https://en.bitcoin.it/wiki/FAQ
== How does the proof-of-work system help secure Bitcoin?
== To give a general idea of the mining process, imagine this setup:
== payload = <some data related to things happening on the Bitcoin network>
== nonce = 1
== hash = SHA2( SHA2( payload + nonce ) )
== The work performed by a miner consists of repeatedly increasing "nonce" until the hash
== function yields a value, that has the rare property of being below a certain target threshold.
== (In other words: The hash "starts with a certain number of zeroes", if you display it in the
== fixed-length representation, that is typically used.)
Re: Chip n Pin
Came here to say the same thing. I believe that the near-100% prevalence of chip'n'pin cards in Canada has made skimmers obsolete.
Now, if we can just get rid of white label ABMs...
I shudder to think what the coolant used here is.
Y'know, 'cuz it's a Raspberry pi.
A Raspberry PI!
Oh, don't you know anyone who speaks Greek? Ask them how to pronounce that letter.
Re: Reminds me of...
One of the late-night talk shows on Radio-Canada used to get a classical music reviewer to review the heavy metal rock albums - all in good fun. Generally, the reviewer would draw parallels with opera.
No, no, no, that's not what it looked like.q
I distinctly remember that page when I first saw it: It had glowing amber phosphor letters on a black background. No, really!
...What's to stop people from using reflective paint?
...note that the delta-shaped plane in the video is painted matte black.
/While we're at it, why not fly smart drones with mirrors?
Y'know, so that the beam can be reflected back to the ship? Heh...
Re: Mostly harmless
From The Register, just a few days ago:
Justice Stefan Lindskog, a senior judge from Sweden’s supreme court, has told an Australian audience..
...snip, snip, snip,...
[/That] his personal view,..., is that Assange has done good works.
“At the end of the day Assange will be thought of as someone who made public certain pieces of information,” Lindskog says, adding that he feels many of Wikileaks’ leaks “were good for society and should not be punished.”
“The good made by leakage of such information cannot be underestimated,” he says. “It should never be a crime to make known the crime of a state.”
Me, I'm from the "You are what you do, not what you (or others) say you do" school... On the whole, IMHO, Assange's contributions have made the world a little better.
Now, if we can just arrest Bush and Blair and drag them to the ICC...
Any bets that despite that 10% bump...
..thestudios still didn't quite make enough money to pay anyone any royalties?
Barenaked Ladies, not Bare[space]Naked Ladies.
Boy, if I had a million dollars for every time THAT happens...
DNS servers filled with Kool-Aid?
Weren't they supposed to use Fluorinert?
In Canada, you get a double credit for every day you spend in jail pre-trial.
If you ask me, they should give him a week's credit for every pre-trial day he spent in solitary confinment.
/not an anonymous coward
Re: 'Deadly Weapons' ; Was: I blame Holly wood
Some friends and I saw that film in the theatre(s) when it came out. We walked out at about the 2/3rd mark, we couldn't take the boredom.
At the time, the local newspaper interviewed her. "They're real," she asserted to the reporter. "Hmm," he thought, "there's not that much silicon in the whole world."
If memory serves, she was married to a referee in the NHL.
Re: Higher temperatures =
D'oh! Those are Glasgow's figures... My bad.
Re: Higher temperatures =
Damn you, boltar! I came here to say the exact same thing! It's no surprise.
The Antartic is also known as a desert, at an annual precipitation of about 165mm - the extreme cold makes the air extremely dry. A rainfall of less than 250mm per year qualifies it as a desert. For comparison's sake, London's annual rainfall is 1,480mm.
The poor sods in Crib Goch, have to suffer through 4,473 mm. Maybe Rob McKenna lives there...
Most people who live in snowy climates know that when it's really cold, it tends to not snow much.
It might be more accurate than..
..the bloody keyboard on the iPhone's screen.
Sheesh!! It's not pronounced 'kilometers'...
Next thing you know, you'll be pronouncing that planet 'Uranus', instead of, well, you know.
So, she took it on the chin, eh?
I mean, if you're going to use Scottish words and all, and if Scotland's second language is STILL French...I can't believe I'm the first to say it.
/sigh... Look up 'menton'.
Idea for a new iPhone accessory:
A tripod for when you want to be in the group shot, but with a little 'cupping flag' to shield the delicate iPhone mechanisms from the harmful effects of light.
Really. Crappy. Products. Really!
Is this what used on Omicron Persei 8?
I have an old Targus CLC1 Leather Convertible Backpack.
I've packed this pack completely full (Toughbook, portable Canon BJC-50 (sigh, since discontinued), spare printhead, the very nifty IS-12 Scanner printhead, inkjet paper, notepad, pens, mouse, plus all the other usual paraphenalia. The zippers still hold well.
The leather is good quality and the pack looks good. I've gotten compliments about it (and the Toughbook) from the Commissionaires at airport checkpoints. The dividers and pockets are all handy and useful. And the price was reasonable - in 2001, I paid 169$CDN. Bonus: it holds up to 9 floppy disks!
I guess that's why they had to discontinue it.
It'll be a long time before I get another Targus product - their 'lifetime replacement warranty' policy replaces your 'I finally found a case/back/pack that has everything that I want' with a clearly inferior model... (Even when you'd accept having it repaired. When this one breaks, I'll find a good shoe/leather cobbler. Or perpaps get a Rush 24.
Re: Burn the heretics!!
Maple Syrup is also good on 'Oreilles de Crisse', baked beans, ham, sausages, and eggs. Y'know, all the 'lite' fare usually served at sugar shacks in March or April, when the maple sap is running.
Can here to say "THIS!"
From the Groklaw article - you'all really should read it:
The foreman[Patent Holder Velvin Hogan - http://patents.justia.com/2008/07352953.html ] told a court representative that the jurors had reached a decision without needing the instructions.
I wonder if Mr. Hogan's patented method was ever used to D/L video without permission...
A more important question, IMHO...
Are the Linguiboffins Pastafarians?
Re: And if the password is hashed
To all: I think my math is OK here, but pls forgive me. I didn't use billion, as the meaning changes depending what side of the Atlantic you're on.
AC: I don't think you understand just how large a 128-bit number is, let alone a 256-bit number. 128 bits works out to around 3.40 × 10^38 different numbers.
Humor me here: Fit 3 x 10^11 (three hundred thousand million) hashes in a cubic millimetre...
A desktop HDD has an outside volume of 386,022 mm^3. At the same storage density as above, the HDD would have to be able to store 115,806,600,000,000,000 128-bit hashes or 1,852,905,600,000,000,000 bytes (1.9 million petabytes - 1.9 zettabytes) of data to match the storage density of that cubic mm above.
To visualize just how much data that is, think how big a pile nearly two million million 1TB drives would be. The annual HDD production of any sized-storage by the three largest manufacturers is 200M - so that'd be 10,000 years' production.
Last year, IBM announced that it is building a 120 PB HDD data repository - an array of 200,000 HDDs. That 1.8ZB HDD would represent 15,834 of IBM's arrays.
The volume of the Earth is roughly 1.097 x 10^27 mm^3. That's a thousand million million million million.
A planet-Earth-sized pile of 1.8ZB HDDs would be needed just to store all possible 128-bit hashes. (Seagate expects to use HAMR to produce 60 TB+ 3.5" hard drives within the next ten years - you'd still need 31,666 of 'em for ONE 1.9 ZB HDD.)
At current rates of manufacturing, you would need every HDD produced for 2.6 x 10^21 years just to store all possible 128-bit hashes. That's 1.8 x 10^11 times the age of the universe...
Oh, it gets worse, AC.
To store all possible 256-bit hashes, you would need 3.40 × 10^38 Earth-size piles of 1.9 ZB HDDs.
THAT, my friend, is sufficiently large haystack to hide a needle in.
Password hashing IS good practice. Best practice is salted hashing, with individual, random salts (assuming the salts aren't stored with the hashes) and a slow, or a memory-intensive hashing algorithm.
Actually, Netflix took the 20 year old (Actually, 40 year old) BBC series off of the Canadian pipeline a few months ago. I called to ask them to put them back, please! I was halfway through a few of them, and I'm jonesing...
Shouldn't that first guy in the photo be wearing a shirt that says "Left Scale"?
Re: Heck, I don't know most/nearly-all of my passwords.
I wasn't concerned when the 'breach' happened. (At the time, Lastpass wasn't sure that whether some/all of the database had been stolen - but reported suspicious activity.)
No big deal: Within a day or so of the announcement, I changed my master password and in the next few days, I changed (and muchly strengthened) all of the critical passwords, and some of the less-than-critical ones. This was relatively painless - as it was handled by the Lastpass software.
And, no I don't know what most of my passwords are. Heck, I've even displayed some of the 100plus-character passwords to friends - warning them beforehand that this was their ten-second chance to steal a password of mine. (It always elicited a laugh, once they saw the completely-impossible-to-memorize passphrase...)
Not 'biologically correct' at all!
The hips move up and down too much - the repeated shock on the spine and brain would eventually disable you. Even when running, the body keeps the head the same height off the ground, so that the brain doesn't bounce around in the skull.
In walking, the forward (not under your hips) leg puts the heel down first - which does two things: provide shock/energy absorption via the Achilles tendon, and lengthen the leg so that it can reach the ground. The rear leg does something similiar; lengthening the leg by angling down the ball of the foot, and kicking off via the calf muscle.
...that had been a multimillion-pound hoard, instead of a multimillion-pound hoard... It would really have been a sterling find!
Brother MFC-7460DN - £239 ? Ouch!
I purchased a MFC-7860DW about two months ago - for $250CDN.
It's the MFC-7860DN plus Wifi interface - you can D/L a free app to print and scan from iOS devices. Very happy.
Actually, I've had a few Brother printers over the years, they're great value. And work as advertised.
Re: Not a happy (Canadian) camper...
I asked three fanbois, none of 'em knew how!
Not a happy (Canadian) camper...
Aaargh! My employer just switched me from a BB to an iPhone.
Double-aaaaaarrrrggggh!!!! The iPhone is driving me crazy:
Lack of a proper Keyboard - I have to type in lots of alpha-numeric information (the iPhone feels like a Telex machine which uses Beaudot code);
It doesn't know how to handle email conversations (hit 'Reply' on email you've sent on a BB, it correctly assumes you are not 'replying' to yourself';
I haven't figured out how to copy'n'paste a selection of text - I can have ONE word or ALL words, nothing in between;
Why, oh, why, would I want to use the same gawd-dang signature, all the time, no matter which email acccount I'm using?
I'll stop now, I need another drink.
"Apple Store staff outnumber queues". Well, of course!
Just how many queues do you need? Do you really need more than one queue?
Anyway, from what I could tell from the photos, even if there would have been more than one queue, the store staff would STILL have outnumbered the queuees.
Unless you count empty queues.
Seriously, go the website, look up the list of its members and trustees.
[Dr.] Benny [Peiser] is a social scientist and a Visiting Fellow at the University of Buckingham. His research focuses on the effects of environmental change and catastrophic events on contemporary thought and societal evolution.
Not a physicist, not an engineer.
As for the rest of em:
Secretary of State for Energy and Chancellor of the Exchequer, Chief Secretary to the Treasury and Vice-Chairman of the BBC, Senior Policy Adviser to the Prime Minister, (Assistant) (Deputy) Private Secretary to the Queen, Bishop of Chester, Deputy Chairman of Barclays Bank and Director of the Bank of England, Economist, MP for Devon West and Torridge, Permanent Secretary - Environment Department (Ooo! Half a hit!) and Permanent Secretary to the Treasury, and, Cabinet Secretary and Head of the Home Civil Service.
Academic Advisory Council:
Fellow of the Institute of Economic Affairs, Consulting editor (science), Economic commentator for the Financial Times, Chairman of the Water Industry Commission for Scotland, Research Professor (Almost a hit: palaeontologist, stratigrapher, marine geologist and environmental scientist), Professor of geophysics (Yeah, I'll concede this one), Theoretical physicist, Leading transport policy expert and past President of the French Federation of Motor Clubs, independent scholar and member of the US delegation that established the IPCC (Actually qualified for the job!), Physicist who has specialised in the study of optics and spectroscopy, Medical biochemist, Metallurgical scientist, British development economist and Professor of International Development Studies, Professor of Meteorology (Bingo!), Canadian economist specialising in environmental economics, Professor of Economics, Professor of Economics, Professor of Mining Geology, Professor at the London School of Economics, Geologist, Professor of Medical Entomology, Science writer, Electrical engineer, Professor Emeritus of Biogeography, Research Professor responsible the research areas energy and environment, and an astrophysicist and BBC Science Correspondent.
One, two, three....
Pols: Six, seven?
Scientists: Thirteen, minus the five who make you wonder "why?", eight.
If you must read this report, get drunk first, this way you won't remember any of it.
Have you ever read Kafka's In the Penal Colony?
A black bar, à la Borat chasing Azamat,...
...'covering' (well, exagerating) his peener's length, and he'd have said "Great Success!!"
One of the games I play is to do a GIS for random paired words, and see how much porn the search returns. It would make a good drinking game.
'Muffin apocalypse' is one of the rare pairings that results in no porn! Colour me surprised.
Why would anyone miss CNN?
They lost me, a long time ago, at the time of the OJ Simpson trial - "Trial of the Century!" Trail of the Century? I thought that was the Nuremburg Trials.
And it drives me crazy that they seem to set the agenda on the CBC News. Aaargh!
Now, when I need news, I reach for Al-Jazeera.
Canon Printer, and that soundbar...
I have a nifty Canon BJC-50; it's markedly smaller and lighter than the Pixma iP100, albeit not photo quality, and not very fast.
If you can find one, there's was a very cool print scanning print head available for it. You remove the regular printhead, put this one in, and voila!, you have a scanner. Yeah, it's slow but it has all the coolness of a vintage Minox spy camera.
BTW, logitech doesn't make that speaker bar any more.
Is BAE the same company...
...that built the four leaky, fire-prone, dented, almost-always-in-drydock Victoria/Upholder Class submarines that you guys pawned off on to us about ten years ago?
Oh look! It IS the same company!
Cue Maxwell Smart.
"Hang on, Chief, I think he's trying to say something."
Max, kneeling, leans in close and places his ear next to the dying man's mouth and listens, then he stands.
"So, Max, what did he say?
-Get you knee off my chest."
- Review Samsung Galaxy Note 8: Proof the pen is mightier?
- Nuke plants to rely on PDP-11 code UNTIL 2050!
- Spin doctors brazenly fiddle with tiny bits in front of the neighbours
- Game Theory Out with a bang: The Last of Us lets PS3 exit with head held high
- That Microsoft-Nokia merger you've been predicting? It's no go