Bitcoin-Qt is an MIT-licenced Qt 4 GUI application for the original Bitcoin codebase.

learn more… | top users | synonyms (1)

-1
votes
0answers
13 views

Heartbleed bug and Altcoins - Another question [on hold]

In reference to the post: Heartbleed bug and Altcoins I have this questions to the answer posted there: Do you mean that if we created the coin.conf file for any alt coin wallet with this kind of ...
2
votes
1answer
35 views

How can I download the blockchain from own, trusted source?

I have two computers with two different bitcoin-qt wallets: Very heavy-weight desktop with a great internet connection. Less powerful laptop with relatively slow internet. I would like to download ...
1
vote
0answers
30 views

Can I download blockchain updates from somewhere?

I use Bitcoin only on rare occasions - say once every month. I want to avoid long waiting times for downloading and verifying blocks that consequently await me when I reopen bitcoin-qt. There are many ...
1
vote
1answer
24 views

How do I flush the keypool?

After the heartbleed vulnerability, I'm concerned that my private keys could have been compromised. I want to send all my coins to a new address with a freshly generated key. However, if I just ask ...
5
votes
1answer
66 views

Transaction refund address

In the what’s new in Bitcoin Core 0.9.0 notes there is a reference to a refund address. I tried to look it up in the forums and the wikis but I came up with nothing. How can I set a refund address ...
1
vote
1answer
25 views

Which wallet application lets you send to multiple output addresses with just 1 fee?

Which wallet applications lets you send to multiple addresses from one output? I'm looking to build a physical bitcoin kiosk faucet and was looking to see how I would avoid miner fees if i combined ...
1
vote
1answer
84 views

How can I create a new wallet on Bitcoin Core?

How can I create a new wallet on Bitcoin Core (Bitcoin QT)? I forgot my old password, so I can't create transactions using the old wallet. I don't have money on my old wallet, I just need to create ...
0
votes
0answers
12 views

including a conf file in util.cpp

i am including some code to generate a config file when anyone runs the qt wallet. its just like bitcoin, but a change from maxcoin. this is the code that i included in util.cpp ...
1
vote
1answer
51 views

Is change of Bitcoin address of an account possible?

I have multiple Bitcoin addresses in my Bitcoin Daemon, Which address will be used for receive transaction Can i change my default account address(mentioned in 1) to new one
7
votes
2answers
111 views

Transaction fees after 0.9 protocol update

As the changelog of bitcoind 0.9 tells, transaction fees should be greatly reduced. What are the implications of this? How were transaction fees determined before the change and after the change? ...
1
vote
0answers
54 views

Ws2tcpip.h and winsock2.h on Window QT Wallet

Been trying for the past few days but couldn't get it working, I already download the latest cryptopp library but its seems that maxcoin got some issue compiling If I qmake "USE_UPNP=-" ...
1
vote
1answer
43 views

Delete all wallet addresses

How can I delete all addresses from my Qt wallet without having to download the blockchain all over again from the scratch? I would like to find a bulk way to do it as there are a few thousand ...
-1
votes
2answers
63 views

Bitcoin URGENTLY Need Blocks Files - Download them from some Website [duplicate]

I have been doing this synchronization procedure (first time) in bitcoin-qt for over 85 hours and it only came to 31 Weeks Behind. Withdrawed from localbitcoins like 95 hours ago and obviously this ...
1
vote
2answers
58 views

Can anyone without knowledge of encrypted tech use bitcoin?

I am interested in registering online, however I haven't got any knowledge on encrypted language not even on software design or whatever it is called. Is it possible for a person like me to register ...
0
votes
1answer
42 views

Programming for/modding bitcoin-qt on Windows

In multiple places I've found methods of modifying or adding to the bitcoin-qt(or other coin wallet) source on ubuntu or osx, but how would I do this on a Windows machine? If possible, I'd like to be ...
0
votes
1answer
62 views

bonus for my friend

I have use for first time original bitcoin client. When I open show that account bilance is 1,000.0. Why this bonus of 1 btc? 2 question: -Now my friend try open client but his account bilance is 0. ...
0
votes
0answers
75 views

anoncoin-qt make error

I am getting the following error while installing anoncoin-qt. I am following the installation steps here. $ make cd /home/usr/anoncoin-d/src/leveldb && CC=gcc CXX=g++ make OPT="-m64 -pipe ...
0
votes
1answer
76 views

Bitcoin-qt data on external drive

I have done the instructions listed here: How to move Bitcoin data from Application Support on external drive [mac] It works fine for a flash drive connected the mac, but I wanted to have the data ...
0
votes
0answers
6 views

Crptoarbitrer gem shows infinity and zero to crptocoin exchanges

I am using Crypto Arbitrer gem for finding the price amount to buy and sell some coins. It is said that it supports (btc ltc nmc nvc trc ppc ftc cnc) the mentioned coins. But when i check it does not ...
-2
votes
2answers
58 views

How to start mining Bitcoin [duplicate]

I have a strong GPU, CPU, and enough RAM to choke a goat. I have installed BitCoin Core 64, and my wallet is (finally) synced. What do I do to start mining. Do I just leave the program running or do I ...
0
votes
0answers
28 views

Address generation of all cryptocoins

Bitcoin-ruby generates bitcoin addresses for bitcoin link. We are developing a UI which supports some more coins. How can we support generation of address for othercoins too(Ex. Dogecoin, Litecoin, ...
1
vote
1answer
77 views

Why bitcoind/bitoin-qt is imposing transaction fee?

Bitoind is imposing transaction fee on 0.0001BTC forcefully even though i have set the transaction fee to 0, please tell can i transfer the money to some address without fee?
2
votes
3answers
249 views

Is Bitcoin core V.0.9 not updated on PPA ppa:bitcoin/bitcoin?

Version 0.9 of Bitcoin-Qt just came out. When will ppa:bitcoin/bitcoin be updated? In the meanwhile, any steps showing how to upgrade are welcome!
0
votes
0answers
52 views

When compiling qt ld.exe: cannot find -ldb_cxx

When compiling bitcoin-qt on windows I get through qmake "USE_UPNP=-" bitcoin-qt.pro but when I run make -f Makefile.Release it returns ld.exe: cannot find -ldb_cxx which I am pretty sure is ...
1
vote
0answers
38 views

Submitted blocks get rejected on Litecoin testnet

I'm trying to submit blocks to the Litecoin Testnet, however everything gets rejected. I got my raw value as ...
2
votes
0answers
53 views

Bitcoind Performance for production usage

Lets say we have one instance of bitcoind running on the production server. And our exchange software/application interacts with it using RPC callbacks for: address generation withdrawal ...
0
votes
0answers
31 views

Cannot allocate memory

EXCEPTION: 11DbException Db::get: Cannot allocate memory bitcoin in ProcessMessage() Downloaded 250k blocks, now it won't run anymore i'm running ubuntu 12.04, I have 20GB HD and 1gb ram. any way to ...
5
votes
2answers
551 views

Is it possible to send coins WITHOUT importing private key?

I have a cold storage wallet that I periodically move funds into. I want to be able to send funds out of the wallet quickly. Right now, I have to keep a clean VM up with the full blockchain, then ...
0
votes
1answer
36 views

Qt client not exiting on Linux

I am running Ubuntu 12.04. When I close bitcoin-qt (or any of its derivatives, like litecoin-qt or dogecoin-qt), sometimes it does not completely exit. I then have to run killall -9 bitcoin-qt, or ...
0
votes
0answers
26 views

Number of transactions and transaction history doesn't match in qt

I am self mining some xencoins and using Xencoin QT v0.6.3.3-g069d718-beta. The number of transactions shown on overview page is 9 and the number of actual transactions listed under transaction ...
0
votes
0answers
15 views

how can i handle transferring bitcoins between address in my wallet with target-confirmation?

in my website i use bitcoin payment via bitcoind server can someone explain mechanism to make that via Bitcoin RPC API ? can i use accounts in bitcoin or what can i do to make accounts in my wallet ...
1
vote
1answer
38 views

Possible to use BlockChain.info and Bitcoin-QT synced?

I've used both BlockChain.info and Bitcoin-QT. Is it possible to use the same addresses on both? I don't have a incredibly large amount of bitcoins, so I'm not worried about it getting hacked into, ...
1
vote
1answer
229 views

Sent bitcoin with no fee, waited and bitcoins disappeared

I sent about $425 to an adress from my bitcoin-qt wallet and forgot to include a fee. So I googled and googled and waited around for 4 or 5 days for it to stop broadcasting but I get on my computer ...
0
votes
3answers
68 views

How can I send bitcoin from one address to another through the Bitcoin client/API?

How can I send bitcoin from one address to another via Bitcoin client/API ? There exist an API call called: sendfrom <fromaccount> <tobitcoinaddress> <amount> [minconf=1] ...
0
votes
1answer
37 views

cannot connect via 8333 port on website

MY bitcoind is on: http://207.12.89.181/ yet I cannot connect via any port, I've tried 8333 and 8332 any reason why? it's a ubuntu server. Im using that server to connect to from another server.
1
vote
0answers
35 views

how to run bitcoind server on a ubuntu 13.04 server

I am trying to host a bitcoind on my server so I can connect to it on my website, how do I install it, run it, update the conf file? this is on a server not a desktop
0
votes
2answers
58 views

Cannot connect to bitcoin-qt server

# server=1 tells Bitcoin-QT to accept JSON-RPC commands. server=1 # You must set rpcuser and rpcpassword to secure the JSON-RPC api rpcuser=bhhtufhrt rpcpassword=ferhrhh im trying to connect ...
0
votes
1answer
98 views

What are the weakest cryptographic guarantees in Bitcoin?

I read in this Github pull that Bitcoin relies on weaker cryptographic guarantees than SHA256. What are the weaker cryptographic guarantees being referred to? Could it be that RipeMD is 160 bits? ...
1
vote
0answers
50 views

How does the satoshi client handle endianness?

I'm looking through the source code of the satoshi client, particularly into how transactions are serialized and sent through the network or stored to the disk. The CTransaction class has this block: ...
0
votes
0answers
22 views

BFGMiner and Bitcoin-QT error

So I try to solo mine using bfg and bitcoin-qt. I go through bfg it begins to start then I get a grey screen and it stops. The last lines I see are: -Pool 0 is hiding blocks from us -Network ...
0
votes
0answers
26 views

Problem to start bitcoin-qt

Hi (Sorry for my English) I have installed bitcoint-qt but i can not start the program. Error! System: Windows 7 prof 64 BIT Error: Problemsignatur: Problemereignisname: APPCRASH ...
1
vote
0answers
28 views

Bitcoin Qt message signature construction

I'm trying to construct the message verification signature of bitcoin qt in python. I'm able to compute the couple (r,s) of the signature, but, even I'm not able to find the correct way to encode it ...
0
votes
1answer
56 views

Anyone able to run Bitcoin-Qt 0.8.6 on Mac OSX 10.9.2?

I ran the Mavericks update today, putting me at 10.9.2 and now my Bitcoin-Qt stops responding after it notifies me that it is "verifying blocks". I am using it for ongoing research and am in a bad ...
3
votes
1answer
325 views

How is the transaction malleability issue being fixed?

With the upcoming release of Bitcoin Core 0.9, I am wondering how the transaction malleability issue is being fixed and what are the consequences of the fix? It appears that transaction malleability ...
0
votes
3answers
137 views

Stuck duplicate transaction in BitcoinQT

I received two payments with the following transaction: https://blockchain.info/tx/12e487de6fd8d920446cd8663dc11977d185ceaa25b7c6f36921fb76e58875f0 On this transaction ...
-1
votes
1answer
73 views

Compiled and modified source wont work with server=1 [duplicate]

I just compiled dogecoin-qt using the original source, and edited it to generate new genesis block, because i want to create new coin for educational purpose. It is working just fine, and without an ...
1
vote
2answers
189 views

How can I create 50,000+ bitcoin addresses in my wallet?

How can I create 50,000+ bitcoin addresses in my wallet? I will need more than 50,000+ addresses in my main wallet. I use Bitcoin Armory, Bitcoin-Qt and I'm just trying out Blockchain.info. Is it ...
0
votes
0answers
44 views

Installed Bitcoin-QT on windows2008r2 server, but it won't snyc anything at all

Installed Bitcoin-QT on windows2008r2 server, but it won't sync anything at all. No connections to network, no blocks, no movement full stop. I have OK'd it in windows firewall, tried connecting ...
0
votes
1answer
67 views

how to transfer coin using bitcoin rest API

I've been googling for quite some time now, but I was unable to locate any complete example, with the request & the POST/GET parameters to the Bitcoin JSON-RPC. How to use the JSON-RPC ? How to ...
0
votes
0answers
57 views

Android Bitcoin Wallet, zero balance after keys import

I imported all my private keys (including those of change addresses) to Andreas Schildbach's Bitcoin Wallet from bitcoin-qt and my balance is still zero. This disagrees with Blockchain, which clearly ...