<p>those block files <em>are</em> your copy of the blockchain. you could stop your new bitcoind daemon and move them into the $HOME/.bitcoin/blocks folder and restart bitcoind, and save yourself and the network the necessity to re-download them.</p>

CC BY-SA 3.0
2018-01-05T19:05:20.883Z
2018-01-05T19:05:20.883Z
jcomeau_ictx
<p>In my Bitcoin Folder I found on my old computer,theres also files of  aprox. 130 Mb .dat files. I have now, like I was told dumped the wallet.dat into my new installation of Bitcoin Core, and its running.</p>

<p>Will I need those blk000xx.dat files for any reason ? Are there any cions in them, or information of any value ?</p>

CC BY-SA 3.0
2018-01-05T20:35:28.217Z
you don't need the blk000xx.dat files, as it is "only" 130MBytes. The whole blockchain is in the +170 Gigabyte range. When re-downloading the blockchain, you would save maybe 10 minutes (out of several days). These files don't contain any "valuable" data, in terms of bitcoins - they are never in any files. They are "kept" in the blockchain, and with the keys in a file called "wallet.dat", one could move bitcoins from one address to another (hopefully to your own address). So if you have wallet.dat, then there maybe some value.
pebwindkraft
<block>
Blocks Folder and blk00000.dat files
user72139
# Blocks Folder and blk00000.dat files

(Asked by: username_0 on 2018-01-05)

In my Bitcoin Folder I found on my old computer,theres also files of aprox. 130 Mb .dat files. I have now, like I was told dumped the wallet.dat into my new installation of Bitcoin Core, and its running.

Will I need those blk000xx.dat files for any reason ? Are there any cions in them, or information of any value ?

**Tags:** block

> **Comments:**
> **username_1**: you don't need the blk000xx.dat files, as it is "only" 130MBytes. The whole blockchain is in the +170 Gigabyte range. When re-downloading the blockchain, you would save maybe 10 minutes (out of several days). These files don't contain any "valuable" data, in terms of bitcoins - they are never in any files. They are "kept" in the blockchain, and with the keys in a file called "wallet.dat", one could move bitcoins from one address to another (hopefully to your own address). So if you have wallet.dat, then there maybe some value.  

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## 1 answers

### Answer by username_2 on 2018-01-05. Score: 2

those block files *are* your copy of the blockchain. you could stop your new bitcoind daemon and move them into the $HOME/.bitcoin/blocks folder and restart bitcoind, and save yourself and the network the necessity to re-download them.


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