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Version 1.1 is out, with more intuitive operation, a custom HTTP user agent and cleaned up temporary files.
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For a nice tradeoff between ease of use(eWallets) and security (native clients) I'd suggest you look into Electrum!
The wallet file with your keys is still stored on your own computer, so it's not an ewallet, but you don't need to back it up as it can be recreated from a 'seed' at any time. Look into deterministic wallets for more technical info on how that works.
Disclosure: I'm involved with the Windows builds of Electrum.
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So I've decompiled it, and this is what the source looks like: 1. Build the GUI 2. Output a random string of characters for the address 3. Output 0 for the balance 4. Repeat  Why even bother piuk  I guess it's just sarcasm, but if not, well I confirm that the app (v1.01)does query blockchain.info for live address balance data. Anyway, you can use any network sniffer worth its salt to verify this. That said, it's true that the current code is quite trivial and not to be taken too seriously (as announced in the OP). Not like it makes a big difference anyway! |
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Other clients than Bitcoin-Qt are available, not all of which require the full blockchain: dre.redmartian.org/compare.htm
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Hi, I lost my labels again! This time I didn't do anything out of place and I don't see any error messages.....
There still seems to be something wrong/corrupted with your electrum.dat file... Were you able to locate it? It should be in the %appdata%\electrum directory, unless you're using the portable version. When you find it, try to delete it and restore the wallet from your seed. This should create a fresh electrum.dat file. Hope this helps! |
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A slightly off-topic, but curious factoid:
I've just noticed that VERY few of these addresses begin with 1[a-z] ... The overwhelming majority begins with 1[A-Z] or 1[0-9]. I would have expected a more random distribution. Any explanation for that? Perhaps I'm missing something obvious.
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Got a nice response from piuk, so that's cool! He's ok with it as long as I use a custom user agent in my request headers so he can keep an eye on the load. So I'm going ahead and will develop this a lilttle more! I envision DSV to eventually double up as a fast address generator, watch-only balance checker, dictionary-based brainwallet bruteforcer, and screensaver. It will also support easy drag-and-drop of custom TXT lists with brainwallet sha256-formatted private keys, or 'interesting' addresses such as satoshi's addresses, top 500 rich addresses, etc  As I'm currently travelling, development will not resume immediately, though. |
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I don't see any electrum.dat files, just electrum files. i deleted everything and the shadow window still comes up. Somehow, it remembers my wallet transaction details??? I thought I deleted everything...
If it still remembers your details, it means the electrum.dat file is still there. It's the only place any electrum data gets stored. Make sure you enable the "hidden files and folders" checkbox when searching. Sorry for the slow replies, I'm travelling and can't go online very often. |
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I did see this message though in the console (electrum still works though)... Python 2.7.3 (default, Apr 10 2012, 23:31:26) Type "electrum -help" for a list of available commands. (Full documentation at https://en.bitcoin.it/wiki/Electrum) --- 11/09/2012 10:00:24.56> e Install zbar package to enable QR scans Connected to electrum.bitcoins.sk:50001 Exception in thread Thread-1: Traceback (most recent call last): File "C:\Users\Sovereign108\AppData\Roaming\Electrum_SysFiles\1.01-g2\C_\Pyt hon27\lib\threading.py", line 551, in __bootstrap_inner self.run() File "C:\Users\Sovereign108\AppData\Roaming\Electrum_SysFiles\1.01-g2\C_\Ele ctrumPY\lib\interface.py", line 426, in run self.handle_response(response) File "C:\Users\Sovereign108\AppData\Roaming\Electrum_SysFiles\1.01-g2\C_\Ele ctrumPY\lib\interface.py", line 376, in handle_response self.wallet.receive_history_callback(addr, result) File "C:\Users\Sovereign108\AppData\Roaming\Electrum_SysFiles\1.01-g2\C_\Ele ctrumPY\lib\wallet.py", line 865, in receive_history_callback self.save() File "C:\Users\Sovereign108\AppData\Roaming\Electrum_SysFiles\1.01-g2\C_\Ele ctrumPY\lib\wallet.py", line 670, in save f = open(self.path,"w") IOError: [Errno 22] invalid mode ('w') or filename: 'C:\\Users\\Sovereign108\\ AppData\\Local\\Electrum\\electrum.dat' Disconnected. Poking Can you search your C:\users\sovereign108 folder (+sub folders) for all occurrences of electrum.dat ? Do you find several? Just a wild guess, could it be that the BSOD has corrupted some of your directory structure somehow? Perhaps time to make a fresh profile? I was actually wondering if that 'shadow' window you've been getting is not caused by some corruption in the current profile... |
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I haven't received a response from piuk yet, but am already considering alternate data sources and make it a user option as to which one to use.
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HI, I've got another issue with electrum! basically, all of my receive address labels have vanished! Are they supposed to be saved or what?
Address Labels and other preferences are saved in the wallet (electrum.dat) file. Can you give more details as to what happened? Did you try to edit, move or delete the wallet file? |
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so, i managed to reimport the addresses containing coins into a new electrum wallet.
however i still have the same problem with them. "not enough funds" when trying to send any amount of coins.
Actually, the workaround I had in mind is to import those addresses into another client (such as bitcoin-qt, multibit, or blockchain.info), and spend the coins from there (even sending them back into a new electrum address should fix it, I guess) |
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just a warning.... don't run random executables linked on this forum...  Sure, sound advice! I do guarantee that this app does no malicious things, but I agree that to be on the safe side in general, either run executables in a secure virtual machine or sandbox (such as Sandboxie) or compile them from the source. The (quite short, exactly 75 lines!) source code for this app will be released soon. I need to clean it up a little and make it more readable - it's still a little messy right now. Very cool Project, even though of course it's a bit 'pointless'. What happens when (as in before the sun dies out) you find a non-zero balance? Also- does it support GPU's? :-) Also- can you export all these Bitcoin addresses and Private keys? IE: can it double as a key pair generator? Sure, all addresses along with their private keys are automatically exported to a file on the desktop (the location will be changed to something more sensible in the next release) |
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ThomasV, is it possible to extract private keys for individual addresses generated by the deterministic wallet? If so, this user could get access to his coins without waiting for a fix...
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Your goal may not be to do that to blockchain.info, but it is still exactly what you are doing.
Ive actually written a similar cmd-line app, but it uses a file with exported addresses that have more than 50btc in them.
ABE is very useful here, albeit slow to import the chain.
Actually I do a *really* slow scan (remember, this is just meant as a toy anyway, nobody should realistically expect actual results from it) so it shouldn't have any significant effect on blockchain.info API resources (less than something like btcbalance for example). I will check with piuk if he's OK with it and modify it if not. |
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just a warning.... don't run random executables linked on this forum... Sure, sound advice! I do guarantee that this app does no malicious things, but I agree that to be on the safe side in general, either run executables in a secure virtual machine or sandbox (such as Sandboxie) or compile them from the source. The (quite short, exactly 75 lines!) source code for this app will be released soon. I need to clean it up a little and make it more readable - it's still a little messy right now. Very cool Project, even though of course it's a bit 'pointless'. What happens when (as in before the sun dies out) you find a non-zero balance? Also- does it support GPU's? :-) When it strikes gold, it will play a nice little sound (and highlight the matching private key) to celebrate the once-in-a-(galactic)-lifetime event! I don't plan to support GPUs for now as this is just meant to be a toy, and the bottleneck is the networking (balance checking) step anyway. And my goal is not to ddos blockchain.info |
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just a warning.... don't run random executables linked on this forum... Sure, sound advice! I do guarantee that this app does no malicious things, but I agree that to be on the safe side in general, either run executables in a secure virtual machine or sandbox (such as Sandboxie) or compile them from the source. The (real short, exactly 75 lines more like 400 now) source code for this app will be released soon. I need to clean it up a little and make it more readable - it's still a little messy right now. [EDIT] see top post |
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This is my new pet/toy project! It's a (mostly) ASCII screensaver, made for those who still don't get how insanely large 2^256 is and want to get a first-hand feel of the sheer size of the Bitcoin keyspace, in a somewhat fun way... The Deep Space Vagabond will slowly crawl through the 2^256 keyspace for addresses with non-zero balances! OK, you probably have much better odds finding extraterrestrial life or winning the Powerball 5 times in a row than stumbling upon such an address, but hey, who knows? Why not see if you're the luckiest kid in the universe? And also, this is FREE!  Although there is no help file or documentation at this stage, it is extremely easy to use - most stuff is automatic: just watch and hold your breath... Latest release: Version 1.475 for Win 2000/XP/Vista/7 (955KB, February 2013) Download - VT Scan - SHA1: 3d05a6979ea6691c52b7461acf724a52beb18ed1!!A word of warning on downloading Windows executables!!It's highly recommended not to blindly download random executables from the WWW. I do guarantee that this app does no malicious things, but my recommendation for optimal security on Windows is to either run new executables in a sandbox (such as Sandboxie) or virtual machine or, for the technically-oriented, compile them from the source code when available. Source code: After carefully considering whether to open source it or not, I have decided to only make the source code to the initial Python-based (command-line) prototype freely available to all. However, the full source code to the current version is available on donation only (amount TBD). Installation: (Windows-only for now) Just download and launch. It should run out of the box, there are no particular runtime requirements and no admin rights are needed. Credits: Design and coding: flatfly Startup screen logo: turbomilk Uses some features of vanitygen by samr7 and curl by Dirk Paehl. Fetches balance data from the blockchain.info API or a local bitcoind + ABE installation. |
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Hey all -
Wondering if anyone could recommend an easy 'newbie proof' BT client for Windows?
Right now, I'm looking at Multi-Bit. This seems like a good one.
MultiBit is pretty good (and has a very dedicated author), and you could also look at Electrum, which has strong wallet encryption, instant start-up and doesn't require Java... (Disclosure: I provide easy-to-use 1-click Electrum builds for Windows)  |
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