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News: Latest Bitcoin Core release: 27.0 [Torrent]
 
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5421  Bitcoin / Development & Technical Discussion / Re: What data storage does Bitcoin core use? on: September 30, 2016, 08:38:52 PM
Bitcoin Core uses LevelDB databases for the block indices. It uses Berkeley DB for the wallet. The actual Blocks themselves are just stored in the raw format that they are received with.
5422  Bitcoin / Armory / Re: Armory 0.95 testing phase on: September 30, 2016, 03:52:51 PM
Wallet Properties view missing addresses is fixed since yesterday's commits also. All my wallets have their addresses displayed correctly, tested all the filters etc
Make sure that sending and receiving still work. Also, do you see the green highlight for addresses with balances? I don't.
5423  Bitcoin / Bitcoin Technical Support / Re: anyone has method to get all the addresses with btc on: September 30, 2016, 02:43:49 PM
blockparser is the tool you need... Download core, let it sync, compile blockparser, run it.... And it gives you a nice report on all addresses.

https://github.com/znort987/blockparser

an other option would be abe... This one actually parses the blockchain and imports everything in a nice mysql database (if you set it up correctly)... It's single thread, and inserts one record at a time, so it takes weeks to run tough...

uhmm.....it seems good but . before that I got another question I Don't want to start a new thread here .

I sync the block chain for three days ( 54G)  and then today I open the bicoin core it shows  no blocks found and start to download from 0

Oh my god .any one face this kind of problem?
You are probably using the wrong datadir. Go to Help > Debug Window and check the datadir field. If it isn't what you expect, then stop Bitcoin Core and re-set the datadir using the instructions I gave you yesterday. Did you at any point click the "Reset options" button in the options for Bitcoin Core?
5424  Bitcoin / Electrum / Re: How can electrum seed be secure on: September 30, 2016, 01:42:41 PM
- snip -
9 words = I get an error, because the number of passwords that is generated is over the .Net limit.

Try Wolfram Alpha:  https://www.wolframalpha.com/

9 words = 20,084,711,768,769,320.25 Years
10 words = 41,133,489,702,439,567,873.75 Years
11 words = 84,241,386,910,596,235,005,438.12 Years
12 words = 172,526,360,392,901,089,291,137,276.56 Years

What about hardware wallets that like ledger have 24 words, is it double this time to brute force them ? It feels great to have such wonderful wallets in our power and it feels even better to know that behind such wallets, desktop ones like electrum being discussed here has a very active team of developers, same with ledger hardware wallet because they want to make it even better to sell more. I can sleep alright at night now after reading this.
It's not double, it's exponential. There would be 2048^24 possible combinations then.
5425  Bitcoin / Bitcoin Technical Support / Re: BTC never arrived to my wallet. Please help! on: September 30, 2016, 12:58:10 PM
https://bitcoinblender.org/?p=home

Is this a legit site? I'm starting to think it isn't and I pretty much just got bent over.....
It probably isn't legit. You've likely been scammed.
5426  Bitcoin / Bitcoin Technical Support / Re: How to compile a static binary bitcoind in Ubuntu on: September 30, 2016, 12:30:58 PM
I have the same issue
Someone knows a solution?
Please don't post in these old topics, make a new one.

Just follow the instructions here: https://github.com/bitcoin/bitcoin/blob/master/doc/build-unix.md to build Bitcoin Core for linux.
5427  Other / MultiBit / Re: Multibit bloom filters on: September 30, 2016, 12:18:43 PM
How Bloom filters for Bitcoin work are defined at https://github.com/bitcoin/bips/blob/master/bip-0037.mediawiki. They must be used by default with Multibit otherwise the wallet wouldn't be an SPV client.

So if I understand correctly it doesnt make a request with only the address that is personally being used but it downloads the entire last block(?) and it check if the transaction is found?
No. It tells the peer to set a specific bloom filter. That filter means that if any part of a transaction (hash, outputs, inputs, etc) matches that filter (i.e. do some operations with the filter and if it matches one thing should return and if not, a different one). If there is a match, it will relay that transaction to multibit, otherwise it will not. Multibit then has to check the transaction itself to see if it pertains to the wallet. Bloom filters have the effect of having false positives but no false negatives. That means that every transaction that the peer relays to Multibit may not actually pertain to the wallet, but the wallet will receive every transaction that pertains to it.

So does it offer any privacy at all?
The guy running multibit node for getting balances of address is he able to see what IP address looked up which address or no?
A person running a peer that multibit connects to is able to see which transactions are relayed to which peer. So, it is possible for that person to know which transactions were sent to your multibit wallet. However, because bloom filters include false positives, it is not possible for him to know exactly which transactions actually belonged to you. He just knows that some of the transactions relayed to you are actually yours.
5428  Bitcoin / Armory / Re: NEW TO THE FORUM AND ARMORY - CAN'T GET OUT OF OFFLINE MODE on: September 30, 2016, 02:26:29 AM
Log files please.
5429  Bitcoin / Armory / Re: Help needed for new Armory user "Offline" never connects on: September 30, 2016, 02:01:51 AM
I'm having this same issue but mine worked great right up and until my computer upgraded to Windows 10.  Any ideas on how to correct??? Thanks.
Make a new thread for your issue. Do not hijack other people's threads.
5430  Bitcoin / Bitcoin Technical Support / Re: how to change the bitcoin core 's block's dir? on: September 30, 2016, 01:39:04 AM
this one
That's the exe file, not the shortcut. Typically people have a shortcut on their desktop that they use to start Bitcoin Core. That is what should be edited.

Anyways, since apparently that is too hard for you to do, in the same folder you are in right now, deselect everything (click in the big empty white area under those files) and then hold Shift and right click. You should see an option that says "Open command window here". Click that. Then type
Code:
bitcoin-qt.exe -choosedatadir
and hit enter. This will start Bitcoin Core. You should see a dialog box appear that asks you to choose the datadir. Choose it and continue. Now, everytime you start Bitcoin Core, it will use whatever datadir you set in that dialog.
5431  Bitcoin / Bitcoin Technical Support / Re: how to change the bitcoin core 's block's dir? on: September 30, 2016, 01:34:09 AM
Are you clicking on the shortcut or the exe file directly? You should be editing the properties of the shortcut, not the exe.
5432  Bitcoin / Bitcoin Technical Support / Re: BTC not getting confirmed on: September 30, 2016, 01:32:18 AM
Just sent you approx $10, not sure what's appropriate in this situation but hopefully it will get your coffee and bagel tomorrow morning!
Got it. Thanks.
5433  Bitcoin / Bitcoin Technical Support / Re: how to change the bitcoin core 's block's dir? on: September 30, 2016, 01:29:07 AM
Go to the second tab. Should be in there.
5434  Bitcoin / Bitcoin Technical Support / Re: how to change the bitcoin core 's block's dir? on: September 30, 2016, 01:26:01 AM
I am in windows ,how to change the <path>  like c:\bitcoin\bitcoindata
The path is C:\bitcoin\bitcoindata

The option you would add is
Code:
-datadir=C:\bitcoin\bitcoindata

and how to get current dir?
Open it in windows explorer (the file explorer). Just click the top bar and it should give you the path to the folder.
5435  Bitcoin / Bitcoin Technical Support / Re: how to change the bitcoin core 's block's dir? on: September 30, 2016, 01:12:27 AM
See https://achow101.com/2016/07/Bitcoin-Core-Troubleshooting#windows-startup except don't remove the option after the startup.

The option you want to use is
Code:
-datadir=<path>
where <path> is the path to the new datadir.




Stop posting consecutively like that. Just make edits to your first post.
5436  Bitcoin / Bitcoin Technical Support / Re: BTC not getting confirmed on: September 30, 2016, 12:51:49 AM
THANK YOU!!!!!!!! (achow)  Cheesy Cheesy Cheesy Cheesy I really appreciate all your help. If it would help the community I can donate some BTC to compensate for your time.
No problem! If you want to tip me, send to 16mT7jrpkjnJBD7a3TM2awyxHub58H6r6Z.
5437  Other / Meta / Re: Account name change: knightdk --> achow101 on: September 30, 2016, 12:44:50 AM
I'm guessing you're using keybase.io? The Invalid Key comes up with those keys - still haven't worked out why.

Does the same with Kleopatra.
Really? I have no idea why that would happen. Works fine on my own computer with gpg.
5438  Bitcoin / Bitcoin Technical Support / Re: Encrypted wallet.dat, lost password, any solutions? on: September 29, 2016, 09:46:14 PM
Hey there!

I don't know if this is the right place to post/ask. Let me know if it isn't, but here we go:
This is not the right place to post. Make a new thread. It belongs in the Alternative Clients section of Development and Technical Discussion.

I downloaded Bither on my iPhone, saved the seed code and the password on my PC - then it died and I wasn't able to save any data (yes this is stupid and I have no one else to blame but myself, so we can skip that part Smiley ). Now password is lost and I have bitcoins stuck in my Bither account. I have still access to the wallett but obviously can't send the money out because I don't have password. I do have an idea what the password might be - is it somehow possible to use brute force on my phone?

If someone can help me figure this out, I'll give them 1 BTC.

Thanks for the help!
First try doing hard drive recovery on your PC. If your hard drive did not fail, it should still be possible to recover your data.

Bither obviously has the wallet file stored somewhere. It should be possible to brute force the wallet to recover your password. Since you have an idea of what the password is, it isn't entirely impossible to brute force it.




I will be locking this thread because it is old, way OT now, and easily hijacked.
5439  Other / MultiBit / Re: Multibit bloom filters on: September 29, 2016, 09:30:30 PM
How Bloom filters for Bitcoin work are defined at https://github.com/bitcoin/bips/blob/master/bip-0037.mediawiki. They must be used by default with Multibit otherwise the wallet wouldn't be an SPV client.

So if I understand correctly it doesnt make a request with only the address that is personally being used but it downloads the entire last block(?) and it check if the transaction is found?
No. It tells the peer to set a specific bloom filter. That filter means that if any part of a transaction (hash, outputs, inputs, etc) matches that filter (i.e. do some operations with the filter and if it matches one thing should return and if not, a different one). If there is a match, it will relay that transaction to multibit, otherwise it will not. Multibit then has to check the transaction itself to see if it pertains to the wallet. Bloom filters have the effect of having false positives but no false negatives. That means that every transaction that the peer relays to Multibit may not actually pertain to the wallet, but the wallet will receive every transaction that pertains to it.
5440  Other / MultiBit / Re: Multibit bloom filters on: September 29, 2016, 07:26:34 PM
How Bloom filters for Bitcoin work are defined at https://github.com/bitcoin/bips/blob/master/bip-0037.mediawiki. They must be used by default with Multibit otherwise the wallet wouldn't be an SPV client.
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