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Author Topic: Restoring a backup perfectly, what happens with my spend coins?  (Read 948 times)
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May 29, 2011, 10:35:16 PM

So I take a backup of my computer and I have some BitCoins in there. What will happen to it all if I restore the backup with the same data? Obviously there will be a bug, as the same money cannot exist two places at a time right?

Just curious to what is going to happen.

<helo> funny that this proposal grows the maximum block size to 8GB, and is seen as a compromise
<helo> oh, you don't like a 20x increase? well how about 8192x increase?
<JackH> lmao
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May 29, 2011, 10:47:51 PM

Are you restoring the backup onto the original system or onto a second system?  You do not want to run the bitcoin client from copies of the same wallet simultaneously.
Pieter Wuille
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May 29, 2011, 10:49:18 PM

A wallet does not contain any coins - it cointains the private keys necessary to spend them. The information about the coins themselves is stored in the network.

If you use the same wallet in two places, the first to spend it, gets it.

aka sipa, core dev team

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May 29, 2011, 11:05:20 PM

As matt.collier said, you don't want to use the same wallet at multiple location.

The reason is that Bitcoin will generate random new addresses when you make transactions. So even if you started with the same wallet, they will become different with time. You should really avoid that!
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