gibybo

31 ms·

271.
by gibybo 13y ago
This limit is set by miners and the reference client (and the various clients that copy the reference client's limit). I'm not sure of the exact minimums necessary to change the limit, but roughly speaking if you could convince mo
272.
by gibybo 13y ago
Yes that is correct. SHA256 is not known to be vulnerable to quantum computers[^], ECDSA (Bitcoin's public/private key algorithm) is. [^] There is a known quantum attack against SHA256 that reduces the brute force search space fro
273.
by gibybo 13y ago
Yes, but this information is not published to the blockchain until you spend it. The address is literally RIPEMD-160(SHA-256(public key)), plus a 4 byte checksum. To receive coins to that address, the sender publishes the amount they are se
274.
by gibybo 13y ago
Can I index fields within a JSON document in PostreSQL? Can I query them? I.e. can I do something like SELECT json_field FROM data WHERE json_field.age > 15 ?
275.
by gibybo 13y ago
A private key is not strictly necessary to receive coins, only to spend them. So while there is still probably a private key with that address (since he intended to actually be able to use those bitcoins), the public key is not revealed unl
276.
by gibybo 13y ago
This assumes 100% gross margin. If they are buying a bundle, you probably mean TV, so they are going to have to pony up to the networks. Then they'll have to pay for upstream (I don't think AT&T etc is going to freely peer wit
277.
by gibybo 13y ago
Don't tell the feds, but I've also been monitoring the public internet in real time (reading Twitter) for years.
278.
by gibybo 13y ago
There is a distinction between prepaid credit cards and gift cards. I'm not sure why, but prepaid credit cards typically require a SSN and gift cards don't. They end up working just about the same though. You can buy them both at
279.
by gibybo 13y ago
I think you'd need a lot more than 2. It's hard to get meaningful competition from only a smaller number because it ends up being much easier and profitble to collude (see telcos/cable companies/etc).
280.
by gibybo 13y ago
How is this being updated? The data is encoded in the url, so the link url must be changing periodically. Doesn't this mean 'nthnclrk' is doing the charting?
281.
by gibybo 13y ago
I like the idea and I would probably be interested if I was a cash-starved startup. However, I suspect the intersection between people with under utilized property assets (especially in SF!) and people who want to speculate in early stage s
282.
by gibybo 13y ago
How much did he spend on the 105 GPUs? From this calculator: http://dustcoin.com/ , you need about 60,000 KH/S to make $114 a day (excluding power cost). One of the most efficient $/hashrate GPUs for litecoin minin
283.
by gibybo 13y ago
I have a basic understanding of electrons and the electric field. Can I think about a Higgs particle like a particle with a mass charge? Does the field work similarly to the electric field? Do all particles with mass have a Higgs particle i
284.
by gibybo 13y ago
When you buy a phone with AT&T, roughly half of the monthly cost goes towards paying back the ~$200-400 loan they gave you to subsidize the phone (it works out to some absurd interest rate, roughly 15-30% depending on what assumptions y
285.
by gibybo 13y ago
There isn't a friendly name for 10^66 bits, but perhaps you can get an idea for the scale by considering the sizes of more commonly used names: bit: 10^0, kilobit: 10^3, megabit: 10^6, gigabit: 10^9, terabit: 10^12, ... zettabit: 10^21
286.
by gibybo 13y ago
Ah, of course, thanks.
287.
by gibybo 13y ago
For a ball, can't I just randomly generate two angles (0-2pi)?
288.
by gibybo 13y ago
Doubt it - if I remember correctly, News uses its own storage engine (written on top of the file system) rather than a SQL database. Source at http://arclanguage.org/install
289.
by gibybo 13y ago
Neither. 1/e would require that they all be independent random events which is not true in the general case (and mathematically 1/e would only be an approximation anyway). 1 would require that they be entirely dependent, which is
290.
by gibybo 13y ago
The dollar has inflated 40% since 1999, so the value of a MSFT share has decreased quite a bit.
291.
by gibybo 13y ago
And inflation. Dividends averaged 1.5% during this period, inflation about 3%. So really we're looking at a ~15% decline in value.
292.
by gibybo 13y ago
Yea my mistake, I missed the units on the radius :( thanks!
293.
by gibybo 13y ago
This looks very cool, although I'm not sure I want to spend the time to figure out how to install it manually :( Why not put it in the Chrome store yet? You could even put it up with an opaque name and no description just as a way for
294.
by gibybo 13y ago
I found some napkin math on stackexchange: http://electronics.stackexchange.com/questions/4664/stealing... One of the answers has the following math: For a large radio tower (100kW), you'd get roughly 80 W pe
295.
by gibybo 13y ago
That's right, my mistake.
296.
by gibybo 13y ago
There is, to some extent. http://www.nasdaq.com/symbol/goog/ownership-summary FMR LLC owns 18 million shares, Vanguard owns 12 million, Barclays owns 7 million, etc.
297.
by gibybo 13y ago
>are they selling shares because they predict other people will sell shares and so they are simply 'beating' the rest of the market to avoid the predicted loss? Or are they selling the shares because they actually believe they
298.
by gibybo 13y ago
Well you probably already know this now since you found the technical paper, but for anyone else: It looks like 'purple' was a simplification made for the posted article. The actual paper mentions the light as ultraviolet at 375 n
299.
by gibybo 13y ago
Quantum computers do not allow you to break all public key cryptography, they only allow you to break the common forms in use today. For some example algorithms that are not vulnerable to quantum computers, see: http://en.wikiped
300.
by gibybo 13y ago
The CAPTCHA really cramps your 'instant' style :( It would be great if it had more convenient ways of preventing abuse. Perhaps look at IP/current server load/user agent patterns/etc to give most people the benefit

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