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I used QT to generate an address, and have received some coins, but they're not showing up because it hasn't synced yet. It looks like syncing will take 2 days. Can I access the coins before then? Maybe dumping the wallet and importing with another client?

  • You can use any online wallet service that lets you import private keys. – David Schwartz Oct 20 '12 at 0:22
  • Version 0.7.1 of the Bitcoin.org client supports a new approach to manually downloading and then importing blockchain data, through bittorrent. And version 0.7.0 introduced -loadblock. Those still won't make the load instantaneous but will at least be faster than the normal P2P network method. – Stephen Gornick Oct 21 '12 at 18:54
  • Also, ultraprune (and LevelDB) is coming in an upcoming release of the Bitcoin.org client which will dramatically improve the initial blockchain download process and subsequent ongoing verification. – Stephen Gornick Oct 21 '12 at 18:56
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    A a follow up to @StephenGornick, here is a torrent for a bootstrap.dat that will get you upto block 197,000: Torrent info hash: 0bb0521942f586ed96203c6f4d136324756f8a9a Torrent magnet link: magnet:?xt=urn:btih:0bb0521942f586ed96203c6f4d136324756f8a9a&dn=bootstrap.dat Filename: bootstrap.dat Byte size: 2491771562 SHA1: e70ca90775dfdb13fd0014425805a0bdf4a31677 SHA256: a3f258e7af030165360596e4cb0b9beb24b4ce97352c22e65349b89ad5fc5d3e – Streblo Oct 21 '12 at 19:33
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You can either import the keys into an eWallet that allows for that, or try taking your wallet to someone else who has a fully synchronised Bitcoin client. If you replace their wallet with yours (remember to make a backup!), the client should synchronise your wallet with the network and you will see your transactions. You can take the updated wallet.dat file back with you and use it until your Bitcoin synchronises.

Both of those options carry risk - in the first case you entrust the safety of your Bitcoins to a third party, and in the second case - to your friend. The risk could be mitigated (for example, encrypting your wallet will still let it be synchronised, but the private keys will be safer), but should always be kept in mind.

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Blockhain.info offers a browser-based tool that will sync a Blockchain.info/wallet with your local Bitcoin-Qt wallet.dat (and vice-versa).

To use this you set up RPC on your client (bitcoin.conf contacins rpcuser=,rpcpassword=) and then run Bitcoin-Qt as a server (-server).

Then you use the browser plug-in (on Chrome, or the Blockchain verifier tool for Firefox or Safari) and perform a sync.

You can then spend the funds from Blockchain.info/wallet.

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