Bitcoin-Qt is an MIT-licenced Qt4 GUI for the original Bitcoin codebase. Initially designed by John Smith, it is now maintained by the developers of the original Bitcoin client., which it has been bundled in since version 0.5.

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Bitcoin-QT Merge Question [duplicate]

Can one import wallet.dat into Bitcoin-QT without overwriting the current wallet? Kind of like a merge function? Or is Blockchain.org the only we to merge wallets together under one account?
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33 views

MAC testnet mining with bitcoin-qt

I configured bitcoin-qt with the following bitcoin.conf file: rpcuser=bitcoinrpc rpcpassword=xxx testnet=1 //needed to work under the testnet. server=1 //needed to solo mine. gen=1 Is this correct? ...
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1answer
88 views

Do I need to wait for Bitcoin-Qt to sync with the network before using GUIMiner?

I'm waiting for Bitcoin-Qt to synchronize with the network, but it takes a long time. I'd like to know if I can start using GUIMiner while it's Bitcoin-Qt is still synchronizing.
2
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1answer
53 views

What does Bitcoin-Qt “Change Passphrase…” do to existing private keys and corresponding addresses?

"Change Passphrase..." obviously lets me encrypt the wallet with a new string of text. I think (correct me if I'm wrong) that this creates new private key(s) inside wallet.dat. How are existing ...
1
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0answers
67 views

Bitcoins didn't arrive to new wallet

I use Bitcoin-Qt. Decided to make another wallet and transfer some bitcoins there. Wanted to give that wallet to my friend as a gift. What I did was: renamed wallet.dat file to 1_wallet.dat started ...
2
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2answers
100 views

How do I switch from Bitcoin-QT to a lighter, faster (SPV) Bitcoin client?

So, keeping up to date with the blockchain is getting ridiculous in Bitcoin-QT, especially on my laptop. If I leave it off or away from the internet for even a short period of time, it takes forever ...
3
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2answers
187 views

What does qt in bitcoin-qt stand for?

just a simple question: what does qt in bitcoin-qt stand for?
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1answer
110 views

Using the Main Bitcoin-Qt Client can you change where it stores the block chain? [duplicate]

I just dont want 12 Gigs floating on my boot drive.
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1answer
68 views

Upcoming Fork - Wallet Safety [duplicate]

In downloading the newer client, do I need to worry about my addresses and hence bitcoins disappearing, or will everything in the old wallet transfer nicely into the new?
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555 views

How To Mining YAC(Yet Another Coin)? [closed]

I have some information about YAC(Yet Another Coin) and then i like it. i need some advice for that. can anybody help me to explain about YAC(Yet Another Coin)?
2
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1answer
81 views

How does the signature verification feature in bitcoin-qt work without a public key?

bitcoin-qt has a "signature verification" feature where you can verify a signed message. All it needs is the bitcoin address of the signer, the message and a short signature. From what I understand ...
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0answers
39 views

in Bitcoin-Qt are low-priority transactions chosen to be included in a block based on total fee or fee per kB?

The block size is limited, and the miner has to choose which transactions to include in it, which is done based on fees. In https://en.bitcoin.it/wiki/Transaction_fees#Including_in_Blocks it says: ...
2
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1answer
163 views

How to utilise more cores when I am cpu mining?

This is purely an experiment for fun. This is for litecoins but can bitcoin people help me too :) I am using litecoinqt to solo cpu mine, on my windows machine. Threads set between 4 and 10, scantime ...
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23 views

Buying Bitcoins using Guyana Dollars

Does anyone know what is required to establish an exchange that accepts Guyana $ as payment for Bitcoins?
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0answers
60 views

Consistent mining reward and reward end date q&a [closed]

What is a safe way to modify the bitcoin source code to A) change the date when mining is no longer rewarded B) ensure that the mining reward is consistent until x coins have been distributed by the ...
0
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1answer
184 views

Bitcoin-Qt Command line - adding private key - Mac OSX

I recently created a custom Public key (with vanitygen) and i would like to add the corresponding private key to my bitcoin-Qt wallet client. I have started bitcoin-Qt in server mode using: $ open ...
0
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1answer
152 views

How do I specify in which directory Bitcoin blocks and other data should be stored?

I am on Windows and installed the Bitcoin wallet. The block folder seems to grow bigger everyday and is stored on my C drive in the roaming directory. I would like to set this to some other folder on ...
1
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1answer
93 views

Is there a command I can type into Bitcoin-Qt to see the total number of bitcoins that have been created?

I know how to obtain this information from other means, I specifically want to know if it's possible for me to obtain this information using the Bitcoin-Qt client alone. I am running it on Windows ...
4
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3answers
319 views

Is the synchronization process supposed to be downloading at less than 5kB/s?

I've been running the bitcoin-qt client for over a week now trying to catch up with the block chain (closer to three weeks if I count the first time I had to synchronize everything). Looking at my ...
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2answers
101 views

How to transfer private addresses from one wallet to another?

My wallet has 3 addresses. My other wallet has 5 addresses. I just want to synchronize those. How would I do so?
3
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1answer
63 views

no menu in unbuntu bitcoin-qt

When I run bitcoin-qt on Ubuntu 12.04, I see this: As you can see, there is no menu on the top menu bar. There is the "beginning" of a menu with the word "Bitcoin" but there are no "File", ...
0
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1answer
61 views

How do I know how much each address own in a wallet?

My wallet has 3 address. One main address is shared with my other computer. The other addresses are not. Does money belong to a specific address or to a whole wallet? What happen if I send money to ...
2
votes
0answers
72 views

Changing settings of Bitcoin-Qt on Mac [closed]

I am using Bitcoin-Qt on my Mac under Mac OS 10.8.3. Everything is working fine but when I want to change any settings in the settings menu, it will never remember my new settings. Is there any ...
2
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2answers
208 views

Are change addresses visible from the GUI in the Bitcoin-QT client?

I've seen this question pop up on reddit multiple times, and I don't know the answer. However, I do know that in my own wallet, several unlabelled addresses have appeared over time without me ...
3
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2answers
679 views

What other wallets can import Qt's backup .dat file?

I've been using Bitcoin Qt on my work computer (my only working computer at the moment) but last week Windows 7 decided that the program's bypassing the firewall to download the blockchain was a ...
0
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1answer
88 views

Account Balance and Bitcoin-QT

I'm attempting to clarify a few things in my mind. The wallet.dat file contains (amongst other things) my transaction history alongside the private keys associated with each address in use in the ...
0
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1answer
86 views

Bitcoin-Qt Signing

When you send money, does Bitcoin-Qt automatically sign the transaction? On the Receive Coins tab, why is there a Sign Message button? Which message am I signing? There is no Send Message button, ...
0
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2answers
184 views

Bitcoin-qt Not Syncing with errors

My bitcoin-qt (on ubuntu installed via the PPA) just plain won't sync. It's been running for days and no/little progress past ~82256 blocks remaining... I've also got an error displaying "Warning: ...
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2answers
255 views

When do I have to backup wallet.dat?

Is it obligatory to backup wallet.dat after each outgoing transfer? I understand it is, but not after each incoming transfer.
4
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1answer
312 views

Does the Bitcoin Qt client have a minimum transaction fee?

I'm trying to transfer all of my 0.1 BTC located in one wallet to another wallet. I don't care how long it takes to finish, so I'd rather send it without paying any transaction fee. I'm new to this, ...
4
votes
1answer
97 views

Why do first bitcoin transactions receive most confirmations?

My very first Bitcoin transaction has 740 confirmations, the next have 239, 212, 70, 43, 5, and 5, respectively. Is this just because my first transaction has had more time to get more confirmations, ...
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0answers
41 views

Bitcoin-Qt listing all Transactions as occurring at same date and time

Any ideas about this one? I've imported addresses into my wallet and on rescan, all transactions come up as same date and time?
1
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1answer
44 views

Block data error, reindexing blocks

Bitcoin QT finished syncing this weekend after d/l for Windows 7 on Thursday. Today, probably 2nd or 3rd time running it, an error came up right away that index could not be found. What would cause ...
1
vote
1answer
115 views

How much time does it take for the bitcoin-qt window to show up in OS X 10.4?

I have downloaded Bitcoin-Qt for Mac yesterday. I understand that it takes a while to "synchronise" but this site says one can access it whilst this process takes place. I have the Bitcoin in my ...
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58 views

How to export an encrypted non-seedless electrum wallet into bitcoin-qt?

How to export an encrypted non-seedless electrum wallet into bitcoin-qt? Is it even possible? Cheers
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0answers
29 views

transaction creation failed

I am using bitcoin Qt version v0.7.0-beta and when I tried to send a transaction (1.5 bitcoins) I received a message transaction creation failed what can be the reason? Few minutes ago I sent 0.1 ...
2
votes
1answer
37 views

data directory issue

ok i have everything set up normally, my only issue is that my data directory is in C:\Users\User Name\AppData\Roaming\Bitcoin normaly this is what you would want, but if you noticed my username has ...
1
vote
2answers
273 views

Why would Bitcoin-QT attempt to charge a processing fee, when I have my transaction fees set to zero? [duplicate]

I'm attempting a test transaction of an amount less than 0.0015 BTC with my transaction fee set to 0 BTC, yet I'm getting this message: The total exceeds your balance when the 0.0015 BTC ...
0
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0answers
72 views

How to set Bitcoin-Qt setgenerate mining recipient?

I know it's inefficient and a bad idea and all that, but I just discovered the setgenerate console command in Bitcoin-Qt (v0.8.1-beta, MAC) and I was wondering how to set the recipient address of "all ...
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0answers
202 views

Importing a backed-up encrypted wallet.dat

I have bitcoin-qt-0.8.1-beta installed on a computer. I also have another computer in which I'd like to share the same wallet. First, for backup purposes, I have exported the wallet into a backup ...
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0answers
63 views

Easiest way to control a remote bitcoind instance?

What's the easiest way to control bitcoind running on a remote machine? I'd like to make transfers, manage my wallet, etc, and ideally I'd like to do it using a UI such as bitcoin-qt. Unfortunately ...
4
votes
1answer
77 views

Why do I need my password to generate a new receiving address in bitcoin-qt?

I heard that the wallet has 100 of the next receiving addresses already. Shouldn't I be able to get one of those without unlocking it?
1
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1answer
125 views

Bitcoin-qt Wallet empty

I just reinstalled Bitcoin-qt and exchanged the new wallet.dat file with my old one. The Address for receiving coins is shown correctly in Bitcoin-qt but the balance is 0.00 BTC. The Block chain is ...
-1
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1answer
226 views

How to activate the mining process in the standard bitcoin client?

I have done the whole synchronization and now it should be mining bitcoins from what I understand but I don't see anything showing that it is actually mining for bitcoins nor any activity from my cpu… ...
2
votes
0answers
70 views

Bitcoin Client - How do I find the destination address of an incoming transaction?

I'm mining Bitcoins and have multiple incoming addresses in my bitcoin-qt wallet. When I get a payout for mining in the "Transactions" tab it shows the amount of BTC I received and the type is set ...
1
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1answer
568 views

Bitcoin-qt setup: Change block-chain file location, settings? documentation?

Installing BitCoin-qt. Have been reading about BitCoin basics but found very little info on the client. Have a few questions about Bitcoin-QT program.(v0.8.1-beta under Windows 7), Where is the ...
1
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1answer
118 views

Can the transaction log history size scale?

Four Reasons You Shouldn't Buy Bitcoins, Forbes.com: Scaling. The Bitcoin protocol requires that every node in the network download a copy of every Bitcoin transaction that has ever occurred. ...
2
votes
0answers
92 views

Is bitcoin-qt as PPA really secure? How to proof?

With Bitcoins being that much worth currently, I came to the conclusion of using a unique old computer just for this "use case". I would like to run Ubuntu with bitcoin-qt (from PPA), but now the ...
0
votes
2answers
189 views

Bitcoin Transaction Unconfirmed [duplicate]

I made a transaction on March 13th, transferring .88 BTC from my desktop wallet to another account. I have a Mac and am using Bitcoin-Qt version v0.8.1-beta. The transaction did not go through, my ...
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1answer
57 views

How to update balance of imported address in electrum

Imported an address into electrum, but the balance of the address shows up as zero. Checked the address on http://blockexplorer.com and it's not zero. The address was imported from bitcoinqt when ...

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