Why is bitcoin-qt startup so slow compared to MultiBit ...

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]

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As far as I know you can't do that with the native FileDialog. There, however, exists a workaround in which you don't use the native dialog: file_dialog = QFileDialog() file_dialog.setFileMode(QFileDialog.DirectoryOnly) file_dialog.setOption(QFileDialog.DontUseNativeDialog, True) file_view = file_dialog.findChild(QListView, 'listView') # to make it possible to select multiple directories: if ... Bitcoin Core (formerly Bitcoin-Qt) is the third Bitcoin client, developed by Wladimir van der Laan based on the original reference code by Satoshi Nakamoto. It has been bundled with bitcoind since version 0.5. Bitcoin-Qt has been rebranded to Bitcoin Core since version 0.9.0 .. Bitcoin Core can be used as a desktop client for regular payments or as a server utility for merchants and other ... In Bitcoin-Qt, only the first wallet will be displayed and accessible for creating and signing transactions. GUI selectable multiple wallets will be supported in a future version. However, even in 0.15 other loaded wallets will remain synchronized to the node’s current tip in the background. To install Bitcoin-Qt, simply download and install Bitcoin Core (Bitcoin-Qt). On first launch of Bitcoin-Qt, it may takes days for this Bitcoin client to do the initial sync the full blockchain, block by block, with the network to your local drive under a Bitcoin-Qt data directory, which is time consuming that usually takes days. Windows Vista and later: C:\Users\<your name>\Appdata\Roaming\Bitcoin; Mac. Open Finder, then open the Go menu. Click "Go to Folder..." Type ~/Library/Application Support/MultiBit; Linux. Open your home directory. Look for the MultiBit folder. Wallet name. The wallet is always called multibit.wallet. It's the equivalent of wallet.dat in Bitcoin-Qt.

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Bitcoin-QT Wallet Update

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