<p>You can swap wallets around and synchronise them up with the same block chain data files - you would just need to replace the wallet.dat files in the Bitcoin's data directory. The client would only synchronise once with the network and later be able to synchronise your wallet files independently. Keeping up with which wallet is synchronised and which isn't might be a bit of a hassle though. I don't know of a client that can operate multiple wallet.dat files simultaneously.</p>

CC BY-SA 3.0
2014-06-24T03:39:07.887Z
hobonickels wallet will manage multiple wallet.dat files simultaneously
adam
CC BY-SA 3.0
2012-10-20T07:36:01.847Z
2012-10-20T07:36:01.847Z
ThePiachu
<p>With the bitcoin-qt client, I'd like to have multiple wallets use a single set of blockchain data files.</p>

<p>Why? Downloading a fresh copy of the blockchain can take days, and each copy of the blockchain seems to be ~ 5GB large.  This feels somewhat wasteful if coins are spread about multiple wallets.</p>

<p>Note: I do not want to run multiple instances of bitcoin-qt simultaneously as I'm sure this would result in a bad time.</p>

<p>I was hoping this could be accomplished using the -datadirs option and symlinking blkindex.dat and blk000X.dat files to a central location.  But it seems like I'd have to create new symlinks in each datadir everytime a new blk000X.dat gets created :(</p>

CC BY-SA 3.0
2012-10-20T07:36:30.457Z
Is there any reason why you want to do something like that? Maybe you don't need to do it this way.
ThePiachu
<blockchain><wallet>
Can I reuse blockchain/index files with multiple wallets?
tooManyWalletsToCount
# Can I reuse blockchain/index files with multiple wallets?

(Asked by: username_0 on 2012-10-20)

With the bitcoin-qt client, I'd like to have multiple wallets use a single set of blockchain data files.

Why? Downloading a fresh copy of the blockchain can take days, and each copy of the blockchain seems to be ~ 5GB large. This feels somewhat wasteful if coins are spread about multiple wallets.

Note: I do not want to run multiple instances of bitcoin-qt simultaneously as I'm sure this would result in a bad time.

I was hoping this could be accomplished using the -datadirs option and symlinking blkindex.dat and blk000X.dat files to a central location. But it seems like I'd have to create new symlinks in each datadir everytime a new blk000X.dat gets created :(

**Tags:** blockchain, wallet

> **Comments:**
> **username_1**: Is there any reason why you want to do something like that? Maybe you don't need to do it this way.  

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## 1 answers

### Answer by username_1 on 2012-10-20. Score: 1

You can swap wallets around and synchronise them up with the same block chain data files - you would just need to replace the wallet.dat files in the Bitcoin's data directory. The client would only synchronise once with the network and later be able to synchronise your wallet files independently. Keeping up with which wallet is synchronised and which isn't might be a bit of a hassle though. I don't know of a client that can operate multiple wallet.dat files simultaneously.

> **Comments:**
> **username_2**: hobonickels wallet will manage multiple wallet.dat files simultaneously  

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