Bitcoin Forum
May 05, 2024, 06:05:55 PM *
News: Latest Bitcoin Core release: 27.0 [Torrent]
 
  Home Help Search Login Register More  
  Show Posts
Pages: [1] 2 »
1  Other / Beginners & Help / Re: Is there a way to find if two addresses come from the same wallet? on: August 09, 2012, 08:02:12 AM
You're mixing up accounts and addresses.

You can use sendfrom to send from a particular account, but that doesn't change which adress(es) the payment comes from.  The concept of 'accounts' is purely accounting within your local client and doesn't affect the generated transactions at all.

If you want to send from a specific address rather than an account, you can combine it with setaccount.

I really think you're mistaken.  'bitcoind sendfrom' doesn't do what you think it does.  It debits the specified account, but uses whichever unspent outputs in your wallet fit the spent amount best* no matter which address 'owns' them.

* for a particular and somewhat weird definition of 'best'

This is such incredibly broken and counter-intuitive behaviour that I hadn't even considered that anyone in their right mind would do such a thing, even after you suggested that someone had. But I just looked it up, and you're right: accounts don't work.

I am still utterly flabbergasted that this exists. bitcoind's accounts rank as one of the most epic design failures I have ever seen.

Thanks for making me hate the world. ;p
2  Economy / Services / Re: Making a new website. on: August 09, 2012, 07:35:36 AM
An important question here is, "how much like Tripadvisor?" If you're OK with a finicky low-end knockoff, you can probably get PHP programmers in the third world to do this for US$20,000. If you want something scalable, feature-full, and maintainable, with a good recommendation system, I would say US$200,000+, on the low end.

You'll need people, or an AI, to gather data for the site. I would recommend the former. Developing a good AI will cost a pretty penny, while data entry people are cheap, and once you get going you can crowdsource it.

Additionally, you'll need good negotiators to make any money with this. You can do it yourself if you're a people person, or outsource it to those who are. Again, the latter is going to set you back quite a bit.

If you're still interested, PM me. Wink
3  Other / Meta / Re: the [btc] macro is retarded on: August 09, 2012, 07:06:10 AM
The "image based" BTC can be emulated by using combining characters: B⃦.

Code:
LATIN CAPITAL LETTER B + COMBINING DOUBLE VERTICAL STROKE OVERLAY

The symbol: $ is often universally used to represent money, even when a dollar or peso is not the official currency. For example: earning $. B$ to represent Bitcoin money can also be used as an alternative.

Technically, '¤' is the "other" currency sigil. While "B$" has the advantage that is 7-bit ASCII, it has the disadvantage that it is, quite literally, "bullshit".
4  Other / Beginners & Help / Re: Is there a way to find if two addresses come from the same wallet? on: August 09, 2012, 07:00:34 AM
bitcoind has this feature in the sendfrom call.

You're mixing up accounts and addresses.

You can use sendfrom to send from a particular account, but that doesn't change which adress(es) the payment comes from.  The concept of 'accounts' is purely accounting within your local client and doesn't affect the generated transactions at all.

If you want to send from a specific address rather than an account, you can combine it with setaccount.

Code:
$ bitcoind setaccount 1BitcoinAddress temporary_account
$ bitcoind sendfrom temporary_account 1DestinationAddress 1
$ bitcoind setaccount 1BitcoinAddress old_account

Cumbersome, I know, but such is life with bitcoind.
5  Bitcoin / Bitcoin Discussion / Re: Results of dictionary attack on SHA256 hashed keys on: August 07, 2012, 12:40:00 PM
Just theorizing but I think most password requirements are worthless and are checking the wrong thing.

Personally if I had a site I would
a) use bcrypt which ensures passwords of 8 characters or more can't be brute forced
b) require passwords to be 8 characters
c) lookup user's attempted password against db of known/weak/leaked passwords and reject it if found.

No need for "Th!s is my @nnoyingly l0ng password333".

"happy clown jumper" all lower case can't be brute forced if protected by bcrypt and isn't on any password list used by hackers.

TheirChildrensMiddleNames
6  Other / Beginners & Help / Re: Is it technically possible for someone to guess a bitcoin address with money in? on: August 07, 2012, 12:37:34 PM
Yes, in some cases. There is even a thread about it. Note that you cannot do this to most addresses, and this is not an attack on Bitcoin itself.
7  Other / Beginners & Help / Re: Is there a way to find if two addresses come from the same wallet? on: August 07, 2012, 12:31:05 PM
Thank you.
This also means that to increase anonimity the original client should include
not only 'send to' and 'amount', but also the 'send from' :- )

The concept is called "coin control" and my understanding is that it is being worked on. 

bitcoind has this feature in the sendfrom call. If you want to send from a specific address rather than an account, you can combine it with setaccount.
8  Local / Nederlands (Dutch) / Re: Ƀ on: August 06, 2012, 04:22:47 AM
I am used to typing EUR already anyway as I have no Euro-sign on my keyboard, currently I am doing the same for BTC.

If you're using Linux, you may be interested in the compose key.
9  Bitcoin / Bitcoin Discussion / Re: Defeating Rubber-Hose Cryptanalysis on: August 01, 2012, 04:42:47 AM
Regulate rubber hoses?

This is one of my favorite trolls ever.
10  Other / Meta / Re: the [btc] macro is retarded on: July 30, 2012, 04:47:19 AM
The "฿" symbol seems the most common. It's used for the Thai bhat (currently valued around US¢3), but a ton of currencies use "$", and who uses bhats anyway? "BTC" stands out too much from the rest of the text, and doesn't copypaste well.
11  Other / Meta / A subforum for technical support with bounties. on: July 30, 2012, 04:37:12 AM
It seems like it would be useful to have a subforum of Technical Support for questions with bounties. (Long proposal, I know.)
12  Bitcoin / Development & Technical Discussion / Re: Two-person cold storage using the raw transactions API on: July 24, 2012, 07:02:43 PM
To detect security breaches, Alice and Bob should send a token amount of bitcoin (say 1 BTC) to the public keys that they are using, and should never spend those coins. Both addresses should be monitored by both Alice and Bob, and if they see coins being spent they should assume that the corresponding private key has been compromised and transfer the multisignature coins to a new, secure multisig address with fresh keys generated on devices that have not been compromised.

This is awesome and will be extremely helpful. And if it ever gets a usable UI, it'll make escrow a lot easier. Great work!
13  Economy / Services / Re: Programming and Web Design Services on: July 23, 2012, 01:12:21 PM
I was very interested until I saw that you cant provide a portfolio. You seem like you know what your talking about. Would you do a test contract with me for 1 hour of development? maybe just get the main page with the links to the other pages done, and I wont be able to pay 100.00 but 50-60 I would do.

If you mean that the lower rate would only apply to the trial hour, I would be happy to do that. PM me the details.
14  Economy / Services / Re: Quick Scripts for ฿3 on: July 20, 2012, 07:14:02 AM
Would you be able to do a small web development based programming job with either rails or django (whichever you prefer)? And I actually mean small. A few values that I control, that work with a pretty straightforward XML API. I don't need fancy designs, just functionality.

If it's as small as you say, Sinatra (another Ruby web framework) would probably be a better fit. PM me the details.
15  Economy / Services / Quick Scripts for ฿3 on: July 19, 2012, 06:16:33 AM
I am a professional programmer offering small jobs for a flat fee of ฿3. (See https://bitcointalk.org/index.php?topic=93064.0 for larger jobs.) At the moment, I don't really have a portfolio available as I only signed up for the forum a few weeks ago, but I will accept cash-on-delivery for jobs of this size from members with more than 50 posts (and who aren't marked as scammers).

The price of the script does not include setting up an environment to run the scripts. I do not support Python versions less than 2.7.3 (>3 is strongly preferred) or Ruby versions less than 1.9.3.

Scripts would be short and sweet, written in bash, Ruby, or Python. Some examples might be:
  • web scrapers
  • download scripts too complex for wget
  • mass file renaming/editing/conversion
  • simple IRC bots
  • scheduled payments/emails/etc.
  • most things that involves doing repetitive, trivial tasks
16  Economy / Services / Re: Need Consulting from an IT/ Security Expert on: July 14, 2012, 08:21:35 AM
I need a hardware based encryption system that will not be beat by quantum computer based systems doing SIGINT by the CSS.

You might be interested in the post-quantum NTRU cryptosystem. Security Innovation produces numerous related products, including hardware solutions, which are listed on http://www.securityinnovation.com/products/encryption-libraries/ntru-cryptography.html.
17  Economy / Services / Re: Programming and Web Design Services on: July 14, 2012, 07:38:50 AM
15BTC, why that’s $100/hour! Shocked Yet no references or a link to a portfolio to back it up.
I am actually quite curious what a $100/hour programmer must produce to expect to be paid that kind of money.

I provide high quality code and computer security services to privacy-conscious clients. Additionally, I tend to bill far fewer hours than many programmers for the same total services, and am thus often times cheaper, in total, than other options.

Unfortunately, I cannot provide a portfolio due to confidentiality reasons, and my desire to separate this identity from my prior business dealings, however I would be happy receive payment for small projects after completion from established forum members, and even to offer a discount for any such person willing to provide a review in this thread.
18  Economy / Services / Programming and Web Design Services on: July 13, 2012, 05:53:25 AM
I am a programmer offering high quality services for a discerning and privacy-conscious clientele. I can create both desktop software and web sites for all functions, and I pride myself in creating highly secure applications tailored to each client's unique needs.

I am highly skilled in the Ruby and Python programming languages, the Ruby on Rails web framework and associated technologies, Linux operating systems, cryptography, Bitcoin and the bitcoind API, Tor and its protections and caveats, PGP, and most aspects of computer security. I also have some familiarity with C, x86 assembly, BSD operating systems, and countless libraries.

My standard hourly rate is ฿12. Please ask for an estimate for how long it will take to complete a project; it has been my experience that people often greatly overestimate development time, especially in web design. (I suspect that this is due to unscrupulous developers offering services at a low hourly rate and then grossly overstating development time.) I also offer fixed rate services, and am amenable to revenue sharing schemes, stock options, or, in certain cases, barter in lieu of all or portion of my fee.

I am, of course, happy to answer any questions or concerns you may have, either via PM, in this thread, or by email at elenam@tormail.org. I highly recommend using PGP; my key ID is 4BE75914.
19  Other / Beginners & Help / Re: How to buy BTC with my Credit Card? on: July 04, 2012, 05:09:31 AM
Because credit card transactions are reversible and Bitcoin transactions are not, Bitcoin vendors just lose the money if there is a chargeback. For smallish deposits, you can try BitInstant: m/]https://www.bitinstan[Suspicious link removed]m/. They accept cash deposits at a large number of locations.
20  Other / Beginners & Help / Re: should I start with bitcoin? on: July 04, 2012, 04:56:12 AM
Hi i am kim. I  am a cosmetic supplier in korea.  I was reading about bitcoin and after some days i made a user.  I want to start selling using bitcoins.  How can i start? Is it worth putting effort to or will i have no sales?  

I've never ordered cosmetics online, but if you offered Bitcoin payment, I would seriously consider it.
Pages: [1] 2 »
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!