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I recently downloaded the newest version (0.8.5) of bitcoin-qt to my MacBook. I'd been using 0.8.0.
Today, I just happened to notice that my internet performance was sluggish so I took a look at the Activity Monitor and saw something was uploading to the internet at max speed. It was rolling along at 600+Kbytes/sec, which maxes out my Comcast cable upload capacity.
By process of elimination, I determined it was bitcoin-qt. Now I can understand it having to download the blockchain, but what on earth is it uploading?
Thanks
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Anyone else having a problem with bitcoinity.org not displaying correctly in a Chrome browser? There are no graphics or styling. It's just text, rendered black on white. It's someone turned off CSS.
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I'm building out the collateralized ID prototype ( http://joecascio.net/joecblog/2013/03/25/collateralized-identity-using-bitcoin-to-suppress-sockpuppets/) which needs to be able to sign messages using the bitcoin-jsonrpc function of the Bitcoin-Qt. In order to sign a message you need to issue the "walletpassphrase" command, with the passphrase as the first arg and the time-out as the 2nd. Now, I'm obviously concerned about putting the passphrase in a file where its path could be sniffed out in the django setting file, etc. and stolen. So is best practice to actually pop up a form and have the user input the passphrase? Then you'd still have to worry about key loggers but that's the limit. Any advice gratefully accepted. |
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I need to do some development testing with signing and verifying messages using bitcoin addresses. It's easy to sign and verify messages from my own Bitcoin-Qt addresses, but for a more blind test, I'd prefer to use messages signed by addresses in another wallet.
There are several online wallets, but I don't know of any that have a message signing function. If you know of one, please reply with a link to the site?
Thanks!
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I am building out a set of programs that together provide the Collateralized ID functionality I wrote up in this blog post a couple months ago: http://joecascio.net/joecblog/2013/03/25/collateralized-identity-using-bitcoin-to-suppress-sockpuppets/I have a basic idea of how I think it should be built, but I'd like the input of folks here so I might avoid going down any twisty little passages to nowhere. I would very much appreciate some suggestions on the best way (best = easiest, most secure, uses python) to implement a completely separate wallet file on a Mac (for starters) for which I can write very specific rule code for how spending should choose output addresses. A separate wallet is needed because it's extremely important to have control over what addresses outputs are drawn from. The historical blockchain record of Latch bitcoin address balances is key to the Collateralized ID concept. So, should I build bitcoind and run it so I can use the JSON-RPC mechanism to talk to it from a django web app or native app? Or should I try to use JSON-RPC on some random miner server out in the network? Should I continue with the django web appr and/or plan to develop a separately installed native app to create and manage these separate bitcoin addresses? Thanks in advance, Joe Cascio |
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This article, over a year old, presaged the recent revelations about NSA and its total war on privacy. The article mentions a "breakthrough" in code-breaking. http://www.wired.com/threatlevel/2012/03/ff_nsadatacenter/all/1According to another top official also involved with the program, the NSA made an enormous breakthrough several years ago in its ability to cryptanalyze, or break, unfathomably complex encryption systems employed by not only governments around the world but also many average computer users in the US. The upshot, according to this official: “Everybody’s a target; everybody with communication is a target.” Just wondering if anyone in the cryptographic community knows anything about this. Did they really discover something new or is this just journalistic hype? |
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It's pretty obvious now that the largest barrier to mass adoption of bitcoin is the difficulty of non-miners obtaining them. The exchanges are the choke point where governments and banks can throw up road blocks or at least speed bumps and snoop around in your business. The hardest part of buying bitcoins is getting fiat thru the purposefully slow, expensive and antiquated fiat monetary systems into the exchanges.
Has there been any discussion of possible mining reward scenarios that would democratize it more so that ordinary CPUs could still participate? In other words, make the difficulty and the reward proportionally smaller. That would allow more non-techies to start participating without going through the exchange process.
Yes, I know the same sort of effect can be accomplished with pools, but pools are power concentrators where the pool "owner" actually controls and profits more from the network hash capacity. Democratizing mining would allow people to mine without contributing to a vast pool that could endanger network stability. Aren't zillions of individual miners safer (from a 51% point of view) than large pools?
Also, what if there were a difficulty/reward algorithm that was demand sensitive?
I can't imagine these ideas haven't been discussed somewhere on here, already, so if you can link me up, I'd surely appreciate it!
JoeC
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I would love to get a BarCamp organized specifically for bitcoin developers, and layered app developers. I would propose to have it in the Boston/Cambridge area where there are many brilliant entrepreneurs and developers in the MIT and Harvard communities. A BarCamp is an "unconference" at which the attendees determine the agenda on the morning of the event. There are no big name keynotes, anyone can propose and facilitate a session and the costs are very low or free if appropriate sponsorship can be obtained. http://en.wikipedia.org/wiki/BarCampIf you would be interested in such an event, PM me or respond to this post. There are so many great ideas out there swirling around bitcoin as a currency and as a platform for layered products, we should start getting together and sharing ideas. |
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To the forum administrators,
I am no longer receiving email notifications of responses to posts I make. I have all the options set for automatically subscribing. And my current notifications page shows lots of activity, but I never receive any emails. Why am I not receiving them? Is there some global "don't send email" preference that I'm missing? I've looked over all my account settings and don't see anything.
Before you ask, I've checked my spam and trash folders on gmail and also my filters to make sure I'm not automatically deleting or archiving them. The last email notification I did receive was on Feb 11.
Hoping someone can help me out with this.
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I've pretty much had it with coinbase.com until they increase their capacity. I haven't been able to do a trade there in days.
So I signed up at btc-e, which I've heard some good things about.
My question is, what's the best way to get funds OUT of btc-e (ie, sell bitcoin) for someone in the US? LibertyReserve? If so, how actually does L-R get the funds to you? Check, paypal?
Thanks
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This graph says BTC Guild has 40+% of the network hashing power. . If that's true, it's dangerously close to being able to mount a 51% attack. Am I reading this wrong? http://goo.gl/teqGn |
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Where can one get help on notifications not working?
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It's often said that governments can't touch bitcoin, which is true with respect to ownership, but they could still affect it economically acquiring or releasing large amounts from/to its citizens. Think of it like gold reserves. If gold were still used as currency, the government could affect how much was in circulation by throttling its spending to the public.
Governments could acquire large reserves of bitcoin by taxation (yes, people will still pay their taxes) and throttle how much goes back into the economy thru spending, or maybe even giving it away to people when they want more in circulation. The important thing to me about this is that they can't just print more. They have to acquire it the way everyone else does, by buying and selling.
Are there any logical holes in this conjecture? Fundamental economics, International effects, etc?
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Let's assume the US government, or any government for that matter, decided to outlaw bitcoin. What could they reasonably do?
Make the use of bitcoin as a method of payment illegal? How would it be enforced? Well, clearly people could not advertise to either be paid or to pay with bitcoin. Or the authorities could mount sting operations offering to pay in bitcoin and entrap anyone attempting to use it. That would pretty much close the door, right?
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Hi, I don't think this is inappropriate for this sub-forum but if so, let me know and I will remove it. I thought this idea might be of interest to developers. Your comments would be of great interest. Thank you, Collateralized Identity - using bitcoin to suppress sockpuppets https://bitcointalk.org/index.php?topic=158117.0 |
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Is it possible to encrypt the wallets? If so, how?
Thanks
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http://joecascio.net/joecblog/2012/11/30/coinbase-com-finally-a-simple-cheap-way-to-buy-bitcoin/I have been using Coinbase to buy bitcoin lately and have found it to be the simplest, lowest cost, if not the fastest alternative for online purchasing I have tried. They use convenient and very low cost (15 cent) ACH transfers to withdraw money from a bank account you designate to buy bitcoin, or into which to deposit money when you sell bitcoin. Because of the ACH transfer, it currently requires a US bank account. Their fee is only 1%, which is much lower than other services like Bitinstant, which charges 3.99% and also entails “surprise” charges by other intermediaries like TrustCash, which can raise the total charge to over 10% depending on how much you buy. Tip donation ID: 1FrTHp5DR3hLAqCVmuzXLmTLkpJFKCAAgP
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Now that the compute-intensive parts of mining are being farmed out to ASICs and other specialty hardware, is there any thought being given to developing the rest of the server code and the client using something higher level than C++, like Python? The productivity and quality gains might be significant.
If so, are there any Python implementations that seem to be gaining favor that I can get on board with?
Thank you!!
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