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2761  Bitcoin / Bitcoin Technical Support / Re: is it possible run bitcoind on a server to provide blockchain infomation on: February 18, 2014, 02:47:25 PM
to a client that hold wallet in the local machine. As my understanding it's not currently possible right ?

What I'm doing right now is, I have bitcoind running on a server, and when I need to spend my coins, I rsync the blockchain from the server to my local machine which is more practical than waiting for the local bitcoind to sync up.

Say I prefer trusting bitcoind on my server to other external services (blockchaininfo , electrum, etc), it should make more sense if my remote bitcoind can provide rpc to local client holding wallet to connect to it.

You could always create your own electrum server and restrict your local copy of electrum to connecting to just that server.

https://github.com/spesmilo/electrum-server
2762  Bitcoin / Development & Technical Discussion / Re: what (technically) enforces bitcoin not to exceed 21 million cap? on: February 18, 2014, 02:42:23 PM
I think the core devs could expand the 21 mio coin limit, if they want. They basically control the Bitcoin Foundation, this forum, alot of mining power, if they update the client >95% would update to this client with new limit.
I think you are wrong about that.  I'd be surprised if 40% update to a client with a new limit.  I know I wouldn't, would you?

They could sneak in changes. For example make the client self-updating and a few versions later release this change in the upper limit of coins. The change will propagate instantly to users around the world.
2763  Bitcoin / Electrum / Re: Does Electrum suffer from transaction malleability? on: February 18, 2014, 04:37:28 AM
To clarify, from the linked thread: be careful with subsequent transactions and automatic payments made with Electrum for now.

Man thats kind of scary, should i switch to bitcoin qt and send all of my btc from my electrum to the new bitcoin wallet ?

All bitcoin clients are affected by the bug. All you have to do is wait for confirmation after you've made a transaction before you make another transaction.
2764  Bitcoin / Bitcoin Discussion / Re: Linux live cd with Bitcoin already installed? on: February 18, 2014, 02:04:54 AM
I'm also going to be making a offline wallet so how would I go about doing this? copying the program on a usb and plugging it into the offline computer and install that may?

You can't use bitcoin-qt for an offline wallet. I suggest electrum. Here are the steps for debian but I imagine they will be the same for ubuntu:

Code:
sudo apt-get update
sudo apt-get install python-pip python-qt4
wget https://download.electrum.org/Electrum-1.9.7.tar.gz                               #software
wget https://download.electrum.org/Electrum-1.9.7.tar.gz.asc                         #signature
wget https://github.com/spesmilo/electrum/raw/master/pubkeys/ThomasV.asc #developers' gpg public keys

Then run gpg once to make it generate the default key pairs and get that over with. Press control c to exit gpg and do this:

Code:
gpg --import ThomasV.asc
gpg --verify Electrum-1.9.7.tar.gz.asc Electrum-1.9.7.tar.gz

It should now tell you "good signature" for ThomasV. There will be a warning which you can safely ignore.

Quote
gpg: Signature made Sat 11 Jan 2014 12:56:41 PM PKT using RSA key ID 7F9470E6
gpg: Good signature from "ThomasV <>"
gpg: WARNING: This key is not certified with a trusted signature!
gpg:          There is no indication that the signature belongs to the owner.
Primary key fingerprint: 6694 D8DE 7BE8 EE56 31BE  D950 2BD5 824B 7F94 70E6

Then install electrum:

Code:
sudo pip install Electrum-1.9.7.tar.gz

Now you can disconnect from the internets.

Then run it (just type electrum) and it will create a new wallet for you. Note down the seed and there's your wallet! To create a watch only wallet copy the master public key over to a USB drive for use on your regular OS install:

https://electrum.org/tutorials.html#offline-mpk
2765  Economy / Service Discussion / Re: Look at what BTC-E JUST SAID to me... on: February 17, 2014, 09:42:20 AM
why fake ? i used to recover my account via skype and there was thread here with btc-e skype also

This place is lightly moderated and yet it shows up prominently in google search results. But it is not an authoritative source of information about BTC-E. That is non other than btc-e.com.
2766  Economy / Service Discussion / Re: Bitcoins hosted on Blockchain.info safe from government freezing of funds? on: February 17, 2014, 09:39:47 AM
blockchain couldn't be seized like your hard drive but could it be frozen? could they stop you from moving funds to pay your lawyer, for example?

You need the private keys behind your bitcoin addresses to control coins sent to those addresses. Ownership of private keys determines ownership of bitcoins. Private keys are stored in the wallet file so if you have a recent backup of your bc.i wallet and know the password to decrypt that backup your coins cannot be seized. Now I believe you need to make a fresh backup each time you generate a new address in your bc.i wallet.

FYI if you are this concerned you really should switch to electrum or another desktop client. bc.i isn't very safe anyway because it serves encrypted copies of your wallet to anyone who has the wallet identifier.
2767  Local / Other languages/locations / Re: Pakistan on: February 17, 2014, 09:23:12 AM
actually, there are many sha256 coins released these days. They are more profitable to mine than bitcoin. namecoin has high difficulty, but its less profitable than bitcoin tho

I see. I didn't know that. Which SHA256 alt coins are more profitable than BTC?
2768  Economy / Service Discussion / Re: Is there really no way to get your bitcoins out of mt.gox?? on: February 17, 2014, 09:15:04 AM
The only way to withdraw bitcoins from mtgox now is by using a gun. Not even that might get results actually.

I read somewhere that in Japan even the mobsters are afraid of carrying guns.
2769  Economy / Service Discussion / Re: Bitcoins hosted on Blockchain.info safe from government freezing of funds? on: February 17, 2014, 09:11:10 AM
They would need to decrypt your wallet file to get your funds. If you had a weak password they could crack it and then move the bitcoins to an address they control.
2770  Local / Other languages/locations / Re: Pakistan on: February 17, 2014, 07:32:00 AM
Actually if scrypt asic miners come out. Coins that we have mined now will be worth a lot more. And I think bigger and cheaper scrypt asic miners will launch at the end of 2014. i am not totally sure though. litecoin was launched in 2011, its enough time to make a cost effective machine within this time.

Well they are already out but the performance so far has been underwhelming. It's not like the SHA-256 ASICs that delivered 10x the hashing power overnight.

The other thing is that litecoin and other scrypt coins compete with one another. So even with ASICs the difficulty increase will be diluted across all these different coins. OTOH when it comes to SHA256 there is more or less only bitcoin. The rest of SHA-256 coins are just nowhere near the size of btc.
2771  Bitcoin / Bitcoin Technical Support / Re: Lost password and seed on: February 17, 2014, 05:30:39 AM
Did I receive an empty .csv file because my wallet is seedless? Because my file does not have the numbers on the second line only "address, private key"

Yeah I thought you created the csv file using your seeded wallet.

Anyway to summarise a) you lost the seed b) you only have the seedless wallet. To recover the wallet you need the seed. Nothing can be done without it. Your only option at this point in time is to search for the seed. It's bound to turn up somewhere. Try to think of where you might have placed it.
2772  Economy / Services / Re: Donating BTC for someone to blue ball Karpeles on: February 17, 2014, 03:37:56 AM
No, he wasn't. Doing something that endangers you is not inherently brave. He achieved nothing, and was therefore merely a ballsy fool, and a public danger (see above — the bold text was probably his main motivation). And I'm certainly no Bush fan, who was of course also a public danger for different reasons.

That's just ridiculous. Of course he achieved something. He registered his protest and in doing so expressed the feelings of millions of people in Iraq and around the world. He showed that regardless of how rich or powerful you are people can get to you. No doubt Bush spent many sleepless nights wondering how it would have been if that was a bomb instead of a shoe.

It's ironic that a bitcoin user should say that protesting is worthless. Satoshi created bitcoin as a form of protest against the injustices of the banking system. The genesis block contains text that expresses that quite clearly.
2773  Bitcoin / Bitcoin Discussion / Re: bind bitcoin address to email? on: February 17, 2014, 03:10:01 AM
email to BTC is very hard to do securely. where do you register addresses? what is a valid email provider? how do you secure email provider safety? etc.  the problem ties in with various difficult to solve problems about networks of trust and keysharing. Paypal/Coinbase works because it is centralized. not what we really want.

BTC to email address does not involve an actual email Smiley Ok maybe for notifications but the actual payment will be made via the bitcoin p2p network. The address could be a stealth address embedded as a txt record in domain's DNS zone. When you enter an email address in your bitcoin client it looks up the txt record to find the stealth address. It then generates a bitcoin address using the stealth address and sends the coins. Finally it will email the recipient the nonce or embed the nonce in the transaction.

Edit: Widespread adoption of DNSSEC would be a pre-requisite for the above.
2774  Local / Other languages/locations / Re: Pakistan on: February 17, 2014, 03:01:48 AM
If in future difficulties of every crypto currency start rising then it's means new and more heavy hardware will be needed??

That is more likely the case But with increasing Difficulty there will be a increase in price as well. And also it is gonna take months before it all happens. But it will only happen if the Scrypt ASICS come out. That I highly doubt even exist. Also we already have 70-80% miners that switched from BTC after ASICS came so until there are no ASICS for Scrypt we are good to go.

1st gen scrypt asics are already out. Reputable people have received units, put up reviews, group buys have concluded. It is legit unlike the early days of bitcoin asics. Check the mining hardware section and look for dualminer, asiabtc, lightning asic etc. Prices are too high though. You'll really feel the pinch when 2nd and 3rd gen chips get out.

Mind you GPU mining won't die. People like you will just switch to memorycoin and the like i.e. non-scrypt, non-sha256 alt coins.
2775  Bitcoin / Bitcoin Technical Support / Re: Lost password and seed on: February 17, 2014, 12:22:33 AM
I am using a mac so I opened the .csv with text edit and it says "address, private_key"

The .csv file is just a plain text file that you can open with any plain text editor or even a word processor if you have to.

The address, private key pairs are start on the second line. For example here's a test wallet:

Code:
address,private_key
1ETcLR3LULxJ9G9Pey5gLuC2Pbcrrrd1sV,5KGqiVAQStjj2zf6Q3a1SAYhP4UCw2Fh9PweN2bUTPDSatyme5S
1F4VxT6gPoKxp63e29fnBPEMeDa2ALegxi,5Jverug9poXUgi73A4n3ZRRLRCfqkNAYs5wZCLv5meNxh8qjr91
1LfjdJVsNUtFkbzjitSJuNkYNWZa7oZHeD,5JHcR5YmxBWggQazHHLHw5y43ogT3nNvsA2RufrKAtavRqswvhb

So you can get back your coins very easily.

- Run electrum

- Go to file menu > new/restore > navigate to a convenient location on your file system and enter a filename for your new wallet > click save

- Then proceed to create a new wallet as normal.

- Once you've created a new wallet import your private keys by Wallet menu> private keys >import. Click yes to make the warning go away and then enter each key on one line like so:

Code:
5KGqiVAQStjj2zf6Q3a1SAYhP4UCw2Fh9PweN2bUTPDSatyme5S
5Jverug9poXUgi73A4n3ZRRLRCfqkNAYs5wZCLv5meNxh8qjr91

- Click on import and you are done!

2776  Bitcoin / Bitcoin Technical Support / Re: got 1 satoshi sent to address half hour after I created it on: February 16, 2014, 11:45:14 AM
EDIT:  I sent .25 btc to the address via bitbook.biz 25 minutes before they did the 1 satoshi.  Do they have a script or something that sends the 1 satoshi to any address that does a transaction, and they check via blockchain?  This is ridiculous!

It makes sense to target recently used addresses. The owner of such addresses will be paying attention to the balance so he'll notice the advertisements.
2777  Bitcoin / Development & Technical Discussion / Re: Multi Bit importing wallet help on: February 16, 2014, 10:29:26 AM
I generated lots of wallets in bit address.org and when it comes to importing them into Multibit it seams the private key is in the wrong format can anyone help please? I only have a mac by the way

Oh my! I hope you didn't send coins to those addresses.

FYI bitcoin private keys come in Wallet Import Format (WIF). There are two types:

- Compressed: These begin with L or K and have 52 characters in em
- Uncompressed: These begin with 5 and have 51 characters.

Do any of the above match what you have??

More details: https://en.bitcoin.it/wiki/Private_key#Base_58_Wallet_Import_format

2778  Bitcoin / Bitcoin Discussion / Re: So...What Other Weaknesses in Bitcoin Coding Should We Know About? on: February 16, 2014, 10:23:27 AM
Of course there will be more surprises down the road. Bitcoin is anything but boring.
2779  Bitcoin / Bitcoin Discussion / Re: bind bitcoin address to email? on: February 16, 2014, 07:09:07 AM
At the moment bitcoin clients don't support this but hopefully we will get there in the future. We should get there in the future because it can be done and people want it.

For the moment you can use coinapult.com.
2780  Bitcoin / Bitcoin Discussion / Re: So many Russians are using Bitcoin on: February 16, 2014, 07:04:27 AM
I hear drugs are banned in the US. Why then do Americans consume so much narcotics?

Banned does not mean that people will just stop using it. It means that if you get on the radar of the authorities they may take action against you. But for the most part no one gives a crap what you do in your own home.
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