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Privacy

108 writings, oldest first

  1. Private email (Adam Back)

    Citation of your Hashcash paper

    I'm getting ready to release a paper that references your Hashcash paper and I wanted to make sure I have the citation right. Here's what I have: [5] A. Back, "Hashcash - a denial of service counter-measure,"…

  2. bitcoin.org

    Bitcoin: A Peer-to-Peer Electronic Cash System

    Bitcoin: A Peer-to-Peer Electronic Cash System Satoshi Nakamoto satoshin@gmx.com www.bitcoin.org Abstract. A purely peer-to-peer version of electronic cash would allow online payments to be sent directly from one party to another without…

  3. Cryptography mailing list (metzdowd)

    Bitcoin P2P e-cash paper

    I've been working on a new electronic cash system that's fully peer-to-peer, with no trusted third party. The paper is available at: http://www.bitcoin.org/bitcoin.pdf The main properties: Double-spending is prevented with a peer-to-peer…

  4. Cryptography mailing list (metzdowd)

    Bitcoin P2P e-cash paper

    Yes, but we can win a major battle in the arms race and gain a new territory of freedom for several years. Governments are good at cutting off the heads of a centrally controlled networks like Napster, but pure P2P networks like Gnutella…

  5. Cryptography mailing list (metzdowd)

    Bitcoin P2P e-cash paper

    Ray Dillinger wrote: Right, it's ECC digital signatures. A new key pair is used for every transaction. It's not pseudonymous in the sense of nyms identifying people, but it is at least a little pseudonymous in that the next action on a…

  6. Cryptography mailing list (metzdowd)

    Bitcoin v0.1 released

    Announcing the first release of Bitcoin, a new electronic cash system that uses a peer-to-peer network to prevent double-spending. It's completely decentralized with no server or central authority. See bitcoin.org for screenshots.…

  7. Private email (Hal Finney)

    v0.1.2 gcc debug build attached

    Could you send me your debug.log? The gcc debug version is attached. gdb is easier to use than you'd think. gdb.exe is the only file. You run gdb bitcoin.exe then type "run" then if it crashes, type "backtrace" for a stack dump, or it may…

  8. bitcoin-list (SourceForge)

    [bitcoin-list] Bitcoin v0.1 Alpha release notes

    Release notes for Bitcoin v0.1 Alpha Bitcoin is a new electronic cash system that uses a peer-to-peer network to prevent double-spending. It's completely decentralized with no server or central authority. You can find screenshots and the…

  9. Private email (Dustin Trammell)

    Re: Bitcoin v0.1 released

    There's at least one node who's inbound IP keeps changing all the time within the same class B. Maybe every time the program is run. I wasn't expecting that. Do you mind if I CC the rest of this to bitcoin-list or Cryptography? BTW,…

  10. Private email (Dustin Trammell)

    Re: A few thoughts...

    I group attacks into two classes: 1) Attacks that can only be done by someone actually in the chain of communication 2) Attacks that can be done by anyone on the Internet from anywhere Type 1 exposes you to people in your house or company…

  11. Cryptography mailing list (metzdowd)

    Bitcoin v0.1 released

    I would be surprised if 10 years from now we're not using electronic currency in some way, now that we know a way to do it that won't inevitably get dumbed down when the trusted third party gets cold feet. It could get started in a narrow…

  12. Private email (Dustin Trammell)

    Re: Bitcoin v0.1 released

    I would be surprised if 10 years from now we're not using electronic currency in some way, now that we know a way to do it that won't inevitably get dumbed down when the trusted third party gets cold feet. It could get started in a narrow…

  13. Private email (Dustin Trammell)

    Re: Bitcoin v0.1 released

    I would be surprised if 10 years from now we're not using electronic currency in some way, now that we know a way to do it that won't inevitably get dumbed down when the trusted third party gets cold feet. It could get started in a narrow…

  14. bitcoin-list (SourceForge)

    Re: [bitcoin-list] Bitcoin v0.1 released

    I would be surprised if 10 years from now we're not using electronic currency in some way, now that we know a way to do it that won't inevitably get dumbed down when the trusted third party gets cold feet. It could get started in a narrow…

  15. Private email (Hal Finney)

    Re: disk full

    I hate duplicating code, but the compiler forces us. Copy the body of the function above it, like this: void insert(iterator it, const_iterator first, const_iterator last) { if (it == vch.begin() + nReadPos && last - first <= nReadPos) {…

  16. Cryptography mailing list (metzdowd)

    Bitcoin v0.1 released

    Hal Finney wrote: Another factor that would mitigate spam if POW tokens have value: there would be a profit motive for people to set up massive quantities of fake e-mail accounts to harvest POW tokens from spam. They'd essentially be…

  17. Private email (Dustin Trammell)

    Re: Bitcoin v0.1 released

    Hal Finney wrote: Another factor that would mitigate spam if POW tokens have value: there would be a profit motive for people to set up massive quantities of fake e-mail accounts to harvest POW tokens from spam. They'd essentially be…

  18. P2P Foundation forum

    Bitcoin open source implementation of P2P currency

    I've developed a new open source P2P e-cash system called Bitcoin. It's completely decentralized, with no central server or trusted parties, because everything is based on crypto proof instead of trust. Give it a try, or take a look at…

  19. P2P Foundation p2p-research list

    [p2p-research] Bitcoin open source implementation of P2P currency

    I've developed a new open source P2P e-cash system called Bitcoin. It's completely decentralized, with no central server or trusted parties, because everything is based on crypto proof instead of trust. Give it a try, or take a look at…

  20. P2P Foundation p2p-research list

    [p2p-research] Bitcoin open source implementation of P2P currency

    Martien van Steenbergen wrote: </i>><i> His concept makes sure money is anonymous unless it is compromised, i.e. </i>><i> the same money spent more than once. As soon as it's compromised, the </i>><i> ‘counterfeiter’ is immediately…

  21. P2P Foundation p2p-research list

    [p2p-research] Bitcoin P2P e-currency v0.1 released

    Announcing the release of Bitcoin, a new open source peer-to-peer electronic cash system that's completely decentralized, with no central server or trusted parties. Users hold the crypto keys to their own money and transact directly with…

  22. Private email (Mike Hearn)

    Questions about BitCoin

    Mike Hearn wrote: My best guess - it is the length of the global chain, and the rapid advance at the start is as the software downloads and verifies the preceding blocks in the chain as being valid. Right. I'm trying to think of more…

  23. Private email (Martti Malmi)

    Re: Bitcoin

    mmalmi@cc.hut.fi wrote: That would be great! I added you (dmp1ce) as a dev to the sourceforge project and gave you access to edit the web space and everything. Definitely. This will be an absolutely essential feature once things get…

  24. Private email (Martti Malmi)

    Re: Bitcoin

    Oh crap, I got your sourceforge usernames mixed up, sorry about that. I clicked on the wrong e-mail when I was looking for your username. You now have access. Your FAQ looks good so far! You can create whatever you want on…

  25. Private email (Martti Malmi)

    Re: Bitcoin

    mmalmi@cc.hut.fi wrote: They have Wordpress built in, you might not need to set up any database stuff manually. I enabled the Wordpress feature and added you as an admin, account sirius-m, e-mail sirius-m@users.sourceforge.net. I'm not…

  26. Private email (Martti Malmi)

    Re: Bitcoin

    It's already an improvement, and like you say, there must be better themes to choose from. It would be good to make the download link go directly to the download area: https://sourceforge.net/project/showfiles.php?group\_id=244765 I…

  27. Private email (Martti Malmi)

    Re: Bitcoin

    I know this sounds really retarded, but I still haven't been able to get the sourceforge login page to load, so I haven't been able to read it either. https://sourceforge.net/account/login.php Hal isn't currently actively involved. He…

  28. Private email (Martti Malmi)

    Re: Bitcoin

    That's a good point that since you know how many coins exist and how fast new ones are created, you could set a support price based on the amount of legacy currency you have and be sure you'll have enough to meet all demands. I had…

  29. Private email (Martti Malmi)

    Re: Linux build, proxy

    Great, I've been looking forward to working on the Linux build. If you connect to Freenode's hidden service, then they tell you they've also banned TOR from that due to abuse and it kicks you off. There's a several step procedure you can…

  30. Private email (Martti Malmi)

    Re: Proxy

    mmalmi@cc.hut.fi wrote: debug.log moved to the data directory "%appdata%/bitcoin/debug.log" 7 inbound and 2 outbound sounds about as expected. My last SVN commit included an overhaul of the code that selects the order of addresses to…

  31. Private email (Martti Malmi)

    Forum

    Now that the forum on bitcoin.sourceforge.net is catching on, we really should look for somewhere that freehosts full blown forum software. The bitweaver forum feature is just too lightweight. I assume the "Forum" tab on the homepage can…

  32. Private email (Martti Malmi)

    Linux update

    linux-0.1.6-test5 solved Liberty's zombie socket problem. The MSG\_DONTWAIT fixed the root cause, it's not having to terminate and restart the thread. The sockets are marked non-blocking already, so I don't understand why. Maybe it…

  33. Private email (Martti Malmi)

    Re: Db::open/Db::close "Bad file descriptor" exception

    I have an idea for a workaround, but it depends on what files the errors are on. If you've accumulated several errors in db.log, could you send it to me? (even if it's rather simple and boring) Is the file listed always blkindex.dat, or…

  34. Private email (Martti Malmi)

    Re: Forum

    That's a good idea to go in a more web-publishing CMS type direction like Drupal. That's a better fit and can produce a better looking website than a wiki. I think I was wrong about wiki. Only a few specific people will do any website…

  35. Private email (Martti Malmi)

    linux-0.1.6-test7

    test 7: Backup your data directory before running this, just in case. Workaround for the Db::open/Db::close "Bad file descriptor" exception. Might also make the initial block download faster. The workaround is to open the database handles…

  36. Private email (Martti Malmi)

    Re: Db::open/Db::close "Bad file descriptor" exception

    Thanks. The db::open/close errors confirm the pattern. More interesting is the zombie sockets activity towards the end, and the socket thread monitor tripped but didn't get it going again. Was the machine disconnected from the net?…

  37. Private email (Martti Malmi)

    Re: SMF forum, need a mod installed

    \> It's okay to go live. Are you setting up a redirect or a dns entry? In DNS entry. I'm thinking of merging the bitcoin.org information with your site content so I can switch the whole bitcoin.org domain over. We need to replace the…

  38. Private email (Martti Malmi)

    Re: SMF forum, need a mod installed

    I'll go ahead with setting up Drupal then. I don't think we should make the site https by default. It's still very unusual for the public part of sites to be https, probably because it introduces potential technical complications, delays…

  39. BitcoinTalk

    Repost: Request: Make this anonymous?

    -------------------- anonguy54: Request: Make this anonymous? Posted:Thu 15 of Oct, 2009 (19:58 UTC) Are there any plans to make this service anonymous? e.g; Being able to route BitCoin through Tor.

  40. BitcoinTalk

    Re: Repost: Request: Make this anonymous?

    There will be a proxy setting in version 0.2 so you can connect through TOR. I've done a careful scrub to make sure it doesn't use DNS or do anything that would leak your IP while in proxy mode.

  41. Private email (Martti Malmi)

    SEO friendly site transition

    We need to do a continuity transition with bitcoin.org so the search engines don't think this is a new site and reset the site start date and PR data. Google allows a certain number of properties like IP address or content of the site to…

  42. BitcoinTalk

    Repost: How anonymous are bitcoins?

    -------------------- bitcoinbitcoin: How anonymous are bitcoins? Can nodes on the network tell from which and or to which bitcoin address coins are being sent? Do blocks contain a history of where bitcoins have been transfered to and…

  43. BitcoinTalk

    Re: Repost: How anonymous are bitcoins?

    > Can nodes on the network tell from which and or to which bitcoin > address coins are being sent? Do blocks contain a history of where > bitcoins have been transfered to and from? Bitcoins are sent to and from bitcoin addresses, which…

  44. Private email (Martti Malmi)

    Bitweaver menu editor broken

    The Bitweaver menu editor is broken, I can't change the Forum link. The "create and edit menu items" page comes up blank for me: http://bitcoin.sourceforge.net/nexus/menu\_items.php?menu\_id=2 You try it, I'm stumped. The Forum link…

  45. Private email (Martti Malmi)

    Re: Sourceforge tracker

    I added the sourceforge tracker to bitcoin.sourceforge.net. The complete selection of links is below if you want a different one. I had it on bitcoin.org for a minute, but took it off. It breaks the lock in SSL mode with a mixed content…

  46. BitcoinTalk

    Re: A few suggestions

    Helpful suggestions, thanks. That's a good idea. The side accepting the connection just needs to withhold from sending anything until it receives a valid handshake. Any portscan would only get a dead connection that doesn't volunteer to…

  47. BitcoinTalk

    Re: Questions about Bitcoin

    1-3: For that level of anonymity you need to connect through TOR, which will be possible with version 0.2, which is only a few weeks away. I'll post TOR instructions at that time. 4: Version 0.1.5: backup the whole %appdata%\Bitcoin…

  48. BitcoinTalk

    Re: A few suggestions

    Right, the SVN has the almost-release-candidate 0.2 source, which can also be built and run on Linux. It hasn't been tested on FreeBSD. That would be a big help. TOR users wouldn't have to worry about how to get seeded, and we wouldn't…

  49. Private email (Martti Malmi)

    Planned release announcement text

    Here's the planned release announcement text. Probably releasing shortly. Bitcoin version 0.2 is here! Download links: Windows Setup Program Windows Zip File Linux (tested on Ubuntu) New features Martti Malmi - Minimize to system tray…

  50. BitcoinTalk

    Bitcoin 0.2 released!

    Bitcoin version 0.2 is here! Download links: http://sourceforge.net/projects/bitcoin/files/Bitcoin/bitcoin-0.2.0-win32-setup.exe/download http://sourceforge.net/projects/bitcoin/files/Bitcoin/bitcoin-0.2.0-win32.zip/download…

  51. Private email (Martti Malmi)

    \[bitcoin-list\] Bitcoin 0.2 released

    Bitcoin 0.2 is here! Download (Windows, and now Linux version available) http://sourceforge.net/projects/bitcoin/files/ New Features Martti Malmi - Minimize to system tray option - Autostart on boot option so you can keep it running in…

  52. bitcoin-list (SourceForge)

    [bitcoin-list] Bitcoin 0.2 released

    Bitcoin 0.2 is here! Download (Windows, and now Linux version available) http://sourceforge.net/projects/bitcoin/files/ New Features Martti Malmi - Minimize to system tray option - Autostart on boot option so you can keep it running in…

  53. BitcoinTalk

    Re: Is my second Transaction working correctly? +Transfer Question

    The transfer is immediate if you send by IP address. If you send by bitcoin address and the recipient isn't online at the time, it might take 30 minutes or more to see it. Also, the recipient needs to be synced up with the block chain…

  54. BitcoinTalk

    Re: TOR and I2P

    I've been thinking about that for a while. I want to add the backend support for .onion addresses and connecting to them, then go from there. There aren't many .onion addresses in use for anything because the user has to go through a…

  55. BitcoinTalk

    Re: TOR and I2P

    When using proxy port 9050, it will only make one attempt to connect to IRC, then give up, since it knows it will probably always fail because IRC servers ban all the TOR exit nodes. If you're using another port, it would assume it might…

  56. Private email (Martti Malmi)

    Exchange ideas

    You could always exchange for Liberty Reserve. It's an online currency similar to e-Bullion, Pecunix or Webmoney that allows exchanges no questions asked and with privacy. LR and the others are hard to buy but easy to cash out. Hard to…

  57. BitcoinTalk

    Proof-of-work difficulty increasing

    We had our first automatic adjustment of the proof-of-work difficulty on 30 Dec 2009. The minimum difficulty is 32 zero bits, so even if only one person was running a node, the difficulty doesn't get any easier than that. For most of last…

  58. BitcoinTalk

    Re: Repost: Request: Make this anonymous?

    When you send to a bitcoin address, you don't connect to the recipient. You send the transaction to the network the same way you relay transactions. There's no distinction between a transaction you originated and one you received from…

  59. BitcoinTalk

    Re: Simple to implement feature requests

    There are command line options: bitcoin -addnode=1.2.3.4 to tell bitcoin about a node to connect to bitcoin -connect=1.2.3.4 connect only to the specified node(s) You can use more than one of these, for instance bitcoin -connect=(first to…

  60. BitcoinTalk

    Re: Repost: Request: Make this anonymous?

    True, sending by IP through Tor trades one problem for another. The Tor exit node can see the text of your message and potentially MITM you. Best to only send to bitcoin addresses then. Payments by bitcoin address are broadcast over the…

  61. BitcoinTalk

    Re: Number of connections

    Nodes stop trying to initiate connections once they have 15. If you can accept incoming connections, then you can get well above that from nodes connecting to you, otherwise you max out at 15. I don't know if there's any reason to have 15…

  62. BitcoinTalk

    Post your static IP

    It would be nice to have a list of static IPs for new users to send test donations to so they can see how the software works. If you can accept incoming connections and you have a static IP address, post it here! Anything sent to these…

  63. BitcoinTalk

    Re: Bitcoin Address Collisions

    There's a separate public/private keypair for every bitcoin address. You don't have a single private key that unlocks everything. Bitcoin addresses are a 160-bit hash of the public key, everything else in the system is 256-bit. If there…

  64. Private email (Martti Malmi)

    Re: Bitcoind

    I put it at bitcoin.org/download/linux64-0.2.7.1.tar.gz. You can delete it when you've got it. I thought about what might cause the problem you're having and made a change that this build includes. This might have been unsafe code,…

  65. Private email (Martti Malmi)

    Re: Bitcoind

    It's in util.c ParseString. I'm guessing the problem is incompatibility between the type "unsigned int" and the type of str.npos, which is size\_type. Try changing the two "unsigned int"s to "size\_type". old: void ParseString(const…

  66. Private email (Martti Malmi)

    Re: Bitcoind

    Actually, please try this instead, this is more correct: void ParseString(const string& str, char c, vector<string>& v) { string::size\_type i1 = 0; string::size\_type i2; loop { i2 = str.find(c, i1); if (i2 == str.npos) {…

  67. BitcoinTalk

    Idea for file hosting and proxy services

    When you want to upload an image to embed in a forum post, there are services like imageshack, but because they're free, they limit the number of views. It's a minuscule amount of bandwidth cost, but they can't just give it away for free,…

  68. BitcoinTalk

    Re: On IRC bootstrapping

    Thanks soultcer for talking with the Freenode staffer. Good to know it's OK at the current size, and now they know who we are. They're supportive of projects like TOR so I hope they would probably be friendly to us. We don't want to…

  69. BitcoinTalk

    Re: Idea for file hosting service

    That's a great idea. There's a thriving business in those services, but I've always thought the standard payment methods are at odds with privacy minded customers. Would you consider making your software freely available so anyone could…

  70. BitcoinTalk

    Re: who is bitcoin.com

    It's unrelated. There wasn't anything there when I started. The price of .com registrations is lower than it should be, therefore any good name you might think of is always already taken by some domain name speculator. Fortunately, it's…

  71. BitcoinTalk

    Re: Exchange Methods

    LR and Pecunix have many established exchanges to paper currencies by various payment methods, and a number of vendors accept them as payment, so an exchange link between Bitcoin and LR/Pecunix would give us 2nd-hop access to all that.…

  72. BitcoinTalk

    Re: Hostnames instead of IP Addresses

    The current sending by IP is not very useful: it connects to the IP, so you'd like to use TOR for anonymity, but then it can totally be eavesdropped and man-in-the-middled. The future plan for sending to an IP is to make it a bitcoin…

  73. BitcoinTalk

    Re: Hostnames instead of IP Addresses

    SirArthur has a good point about the normal online merchant case, which is what the send-by-IP option is more suited to. This is the case where the merchant will have a server on a static IP and their own domain name and SSL cert. Instead…

  74. BitcoinTalk

    Re: On IRC bootstrapping

    The SVN version now uses IRC first and if that fails it falls back to a hardcoded list of seed nodes. There are enough seed nodes now that many of them should still be up by the time of the next release. It only briefly connects to a seed…

  75. BitcoinTalk

    Re: Bitcoin in Ubuntu 10.04

    This is now fixed in the SVN version. 1) Menu bar default color. 2) Balance bar not a different color. 3) Background behind bitcoin address and balance now the same color as toolbar. I checked all the standard themes and it seems…

  76. Private email (Martti Malmi)

    Re: donation

    \>> BTW, it's looking like I may be able to get us some money soon to cover I got a donation offer for $2000 USD. I need to get your postal mailing address to have him send to. And yes, he wants to remain anonymous, so please keep the…

  77. BitcoinTalk

    Re: Slashdot Submission for 1.0

    BTW, I did come to my senses after that brief bout with 1.3, this release is still going to be 0.3 beta not 1.0. I really appreciate the effort, but there are a lot of problems. We don't want to lead with "anonymous". (I've been meaning…

  78. Private email (Martti Malmi)

    Anonymous, homepage changes

    I think we should de-emphasize the anonymous angle. With the popularity of bitcoin addresses instead of sending by IP, we can't give the impression it's automatically anonymous. It's possible to be pseudonymous, but you have to be…

  79. BitcoinTalk

    Re: Anonymity

    It's hard to imagine the Internet getting segmented airtight. It would have to be a country deliberately and totally cutting itself off from the rest of the world. Any node with access to both sides would automatically flow the block…

  80. BitcoinTalk

    Re: stopped prodicing coins

    Thanks for making that calculator. The difficulty doubled a day or two ago, plus it's just random and you can have surprisingly long dry spells.

  81. BitcoinTalk

    Re: Hash/sec Throttling for Democracy

    This is a common point of confusion. There's no such thing as being 1% towards solving a block. You don't make progress towards solving it. After working on it for 24 hours, your chances of solving it are equal to what your chances were…

  82. BitcoinTalk

    Re: Proof-of-work difficulty increasing

    The proof-of-work difficulty is currently 45.38. (see http://www.alloscomp.com/bitcoin/calculator.php) It's about to increase again in a few hours. It's only been 3-4 days since the last increase, so I expect it will increase by the max…

  83. BitcoinTalk

    Re: Privacy versus Safety: handling change

    We should queue up a supply of pre-made addresses in the wallet to use when a new address is needed. They aren't very big, so it wouldn't hurt to have a lot of them. This would more generally cover the case also where someone backs up,…

  84. BitcoinTalk

    Re: JSON-RPC password

    Thanks for that survey! I find "key value" a little unnatural. There ought to be a more definite separator between key and value that suggests assignment. The space people may just be getting lazy using their language's split function.…

  85. BitcoinTalk

    Re: Proof-of-work difficulty increasing

    New difficulty factor 244.213223092 +35% I updated the first post. date, difficulty factor, % change 2009 1.00 30/12/2009 1.18 +18% 11/01/2010 1.31 +11% 25/01/2010 1.34 +2% 04/02/2010 1.82 +36% 14/02/2010 2.53 +39% 24/02/2010 3.78 +49%…

  86. BitcoinTalk

    Webpage idea: Next predicted difficulty change

    It would be neat if someone had a page (like that handy calculator at http://www.alloscomp.com/bitcoin/calculator.php) that projects what the next difficulty adjustment will be. projected difficulty adjustment multiplier =…

  87. BitcoinTalk

    Re: Flood attack 0.00000001 BC

    I don't know a way to implement that. The transaction fee to the block creator uses a special trick to include the transaction fee without any additional size. If there was a transaction for each transaction fee, then what about the…

  88. BitcoinTalk

    Re: bitcoind transaction to ip address

    It's not implemented. It turned out nobody liked that mode of transfer anyway, so it hasn't had much development attention.

  89. BitcoinTalk

    Re: A proposal for a semi-automated Escrow mechanism

    A transaction can be written that requires two signatures to spend it next. You write a payment that requires the signature of both the recipient and the sender to spend it. To release the escrow, you give the recipient the signature for…

  90. BitcoinTalk

    Re: Bitcoin minting is thermodynamically perverse

    It's the same situation as gold and gold mining. The marginal cost of gold mining tends to stay near the price of gold. Gold mining is a waste, but that waste is far less than the utility of having gold available as a medium of exchange.…

  91. BitcoinTalk

    Re: Not a suggestion

    Still thinking this idea through... The only job the network needs to do is to tell whether a spend of an outpoint is the first or not. If we're willing to have clients keep the history for their own money, then some of the information…

  92. BitcoinTalk

    Bugfixes in SVN rev 130

    Misc bugfixes in rev 130: fix -datadir with relative path autostart is now off by default except on windows fix occasional "vector iterator not dereferencable" assertion when compiled with msvc fix readlink compile warning on linux build…

  93. BitcoinTalk

    Re: Bitcoin Watchdog Service

    True, there would probably be someone with a dial-up modem or satellite dish internet. Rarer would be someone who has both that and the wired internet that has the outage, but if it's a big enough segment to matter, out of a million…

  94. BitcoinTalk

    Re: 4 hashes parallel on SSE2 CPUs for 0.3.6

    That big of a difference in speed, by a factor of 4 or 6, feels like it's likely to be some quirky weak spot or instruction that the old chip is slow with. Unless it's a touted feature of the i5 that they made SSE2 six times faster. A…

  95. BitcoinTalk

    Re: tcatm's 4-way SSE2 for Linux 32/64-bit 0.3.9 rc2

    GCC 4.3.3 doesn't support -march=amdfamk10. I get: sha256.cpp:1: error: bad value (amdfamk10) for -march= switch Hey, you may be onto something! hyperthreading didn't help before because all the work was in the arithmetic and logic units,…

  96. BitcoinTalk

    Re: [PATCH] Automatic block validation

    That's a difficult approach. We need to cause a reorg, which will disconnect the invalid chain. This is code that will rarely ever get tested, and is fairly intricate, so something simple and safe is best. Here's what I was thinking of.…

  97. BitcoinTalk

    Re: RFC: remove DB_PRIVATE flag

    Can you provide more details about what removing DB_PRIVATE does? I can't remember if I had a specific reason for DB_PRIVATE, or if I just copied the flags from some example code. Does removing DB_PRIVATE make it safe for other processes…

  98. BitcoinTalk

    Re: Bitcoin does NOT violate Mises' Regression Theorem

    As a thought experiment, imagine there was a base metal as scarce as gold but with the following properties: - boring grey in colour - not a good conductor of electricity - not particularly strong, but not ductile or easily malleable…

  99. BitcoinTalk

    Re: Issues building bitcoin on Windows 7

    The lines it's tripping on: Code: ERROR extern map<string, string> mapAddressBook; ERROR extern CCriticalSection cs_mapAddressBook; ERROR extern vector<unsigned char> vchDefaultKey; OK extern bool fClient; OK extern int nBestHeight; OK…

  100. BitcoinTalk

    Re: The case for removing IP transactions

    Probably best to disable receiving by IP unless you specifically intend to use it. This is a lot of surface area that nobody uses that doesn't need to be open by default. In storefront cases, you would typically only want customers to…

  101. BitcoinTalk

    Re: I broke my wallet, sends never confirm now.

    As you figured out, the root problem is we shouldn't be counting or spending transactions until they have at least 1 confirmation. 0/unconfirmed transactions are very much second class citizens. At most, they are advice that something has…

  102. BitcoinTalk

    0.3.13 RC1 for Windows, please test

    0.3.13 release candidate, to be released soon so please test: http://www.bitcoin.org/download/bitcoin-0.3.13-rc1-win32-setup.exe - don't count or spend payments until they have 1 confirmation http://bitcointalk.org/index.php?topic=1306.0…

  103. BitcoinTalk

    Version 0.3.13, please upgrade

    Version 0.3.13 is now available. You should upgrade to prevent potential problems with 0/unconfirmed transactions. Note: 0.3.13 prevents problems if you haven't already spent a 0/unconfirmed transaction, but if that already happened, you…

  104. BitcoinTalk

    Re: I broke my wallet, sends never confirm now.

    That's going to be more of a SelectCoins thing. SVN rev 161 has a refinement to recursively determine if your own unconfirmed transactions can be spent. This is needed because you should be able to spend your own change right away. The…

  105. BitcoinTalk

    Re: Tor connections not working reliably, many seednodes offline

    Maybe you were just unlucky to have an exit node without reverse lookup. The IRC server's response doesn't look like it was disconnecting you for that. It's supposed to go IRC SENDING: NICK after that, and it doesn't so it gets timed out.…

  106. BitcoinTalk

    Re: Cooperative mining

    ribuck's description is spot on. Pool operators can modify their getwork to take one additional parameter, the address to send your share to. The easy way for the pool operator would be to wait until the next block is found and divy it up…

  107. BitcoinTalk

    Re: RFC: ship block chain 1-74000 with release tarballs?

    Despite everything else said, the current next step is: In particular, I suspect that more read caching might help a lot. Then something more specific was wrong. That's not due to normal initial download time. Without more details, it…

  108. Private email (Martti Malmi)

    Re: Writing about BitCoin

    Gavin Andresen wrote: Great True You're the best person to do it. EFF is really important. We want to have a good relationship with them. We're the type of project they like; they've helped the TOR project and done a lot to protect P2P…

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