What's the difference between bitcoind and bitcoin-qt ...

opening an old wallet.dat

I had about $8 USD worth of bitcoin in a wallet, and I backed up the wallet.dat to my dropbox. According to the modified date of the file this was in April 2013, so it was probaby from bitcoin qt version 0.8.1, or maybe a little earlier.
I basically left it there and haven't done anything with bitcoin since then. Since it is worth probably at least $100 now I decided to check the exact amount.
I downloaded the latest version of bitcoin core, added the wallet.dat file to the data directory, started it with -rescan, and waited almost a month (!) for the blockchain data to get up to date. The balance showed as 0 the whole time. I thought it would update once the blockchain was totally downloaded, but it still just says 0.
Is this a problem with old vs new versions? Did I do something wrong? Next time, should I expect the balance to show a non-zero amount even if I haven't downloaded the whole blockchain yet?
Update: ok, I feel kind of dumb, turns out the transaction was made in a multibit wallet, not a bitcoin qt wallet, but I still have a copy of that too. I opened the wallet in the latest version of multibit classic, and it has the receiving address in question, and checking the address on blockchain.info I can see that it received the transaction... but the transaction and the balance both don't show in the program. I wonder if I need the same multibit version I had before? the transaction was made in feb 2014
Update 2: was able to use the private key to sweep the balance into electrum
submitted by valanbrown to Bitcoin [link] [comments]

Importing Private keys into a QT based wallet, how is it done?

Before the fork I had been storing my tokens in MultiBit. I saw no need to incur a transaction fee to transfer those tokens into a QT compatible wallet format prior to the fork. So now I am here with multiple files that contain the private key(s) from those wallets.
I now need to import these keys into both my Bitcoin (Cash) and Bitcoin (Settlement) QT clients. What are the steps necessary to accomplish this?
I did find https://bitcointalk.org/index.php?topic=336404.0
Is this a safe method in which to perform the activity? I will be importing to Bitcoin ABC v0.14.6 & Bitcoin Unlimited v1.0.3.0
  1. Export private key from MultiBit without password (Done)
  2. edit file with some editor like Notepad++ (I'll probably just use Notepad, unless that is a bad idea?)
  3. copy only key - this is row without # ,and you must copy only key - no date and another symbols , (row indicates that it might be better to import to a spreadsheet?)
  4. then in BitCoin-Qt open from Help->Debug window ->Console (I am able to navigate to where the Console is not located)
  5. importprivkey [label] [rescan=true]
(Where is the information I copied from step 3? and also without the '<>')
(where label is name of owner - your name.; is this necessary? Do I need to provide a label? Can I leave it blank? And if I can leave it blank would I simply omit that the '[label]' argument?)
  1. And when press enter the your address with coins will appear in your addresses and in your balance.
Additionally, can this activity take place on a computer that is not connected to the applicable network? I am still waiting (1 year 40 weeks behind) for the Bitcoin (Settlement) wallet to download the chain (for some reason copying over of the pre-fork blocks did not take and now that the fork has occurred I do not want to try to start over or run the risk of re-installing).
Thank you for your assistance.
submitted by PilgramDouglas to btc [link] [comments]

backup da carteira multibit Bitcoin Wallets: Core vs Multibit How to Back Up Your Bitcoin Wallet How To Install Bitcoin Core And Multibit Wallet On Ubuntu 14.10 Bitcoin: Client-QT Wallet Update Version 0.11.0

Bitcoin-qt is just a program that gives you a pretty interface; but in the background, it uses the core of bitcoind (not sure if it spawns its own version of bitcoind or not, or if it just uses core libraries from it), to do all the heavy lifting. I hope that explains it for you. – xil3 Apr 25 '15 at 16:54. add a comment 1 Answer Active Oldest Votes. 20. You can either run bitcoin-qt or ... Go to C:\Program Files (x86)\Bitcoin using Windows Explorer. In that folder, hold shift and right-click and select Open command window here . In the command prompt, type bitcoin-qt.exe -rescan and hit enter . Now Bitcoin-Qt should start and rescan the blockchain to calculate the balances of the addresses in your wallet.dat file. Since Bitcoin-QT/bitcoind v0.6.0, you can import private keys using built-in RPC command importprivkey. ... Bitcoind will rescan the entire block data to ensure this key has not been used before. This process will take from one to two minutes, depending on your CPU performance. DO NOT abort it before finishing! To avoid rescanning run the following. (space)bitcoind importprivkey ... Only 2 keys/sec added with importprivkey ? How comes its so slow to add private keys using importprivkey ? On a Intel Dual Core 1.8Ghz machine where bitcoind is stored on a big ramdisk the total speed is approx 2 keys/second. CPU is idle at 0-1%, means there is massive time wasted for nothing. Is it the RPC interface You can use a combination of command-line arguments in a shortcut, namely, the "-wallet=" and "-rescan" arguments, to run Bitcoin-qt using different wallets. Say you want to work with 2 different wallets (one for your shared mining profits, and the other for personal mining profits) Step 1: Start up bitcoin-qt and set it up so that it doesn't start up automatically when windows starts up ...

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backup da carteira multibit

Hello everyone, just a quick video about the details around the newest bitcoin core QT wallet version and why you should update. Forum Post: https://bitcoint... Bitcoin.pl Poradnik #2 : Instalacja klienta Multibit - Duration: 5 minutes, 56 seconds. Bitcoin.pl . 6 years ago; 8,956 views; Bitcoin.pl Poradnik #2 : Instalacja klienta Multibit-----Nasz ... In this video, I talk about a much asked question, which wallet should I get the bitcoin.org multibit or the bitcoin core version? Well my friend in this video I will explain just that and cover ... Make some extra $$ lending: Signup for DavorCoin: https://goo.gl/ppsrur OR Signup for Bitconnect: https://goo.gl/xvvhGk This is a short video on setting up, ... To add the PPA and install Bitcoin open a terminal window (press Ctrl+Alt+T) and copy+paste the following lines: sudo apt-add-repository ppa:bitcoin/bitcoin -y sudo apt update && sudo apt install ...

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