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I would like to generate a Bitcoin and Dogecoin (qt) bootstrap file on my ubuntu machine. Is there any way to do this? I know it's possible with Windows but I'm on Ubuntu. Thanks.

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Find your local blockchain:

cd ~/.bitcoin/blocks

Or, to bootstrap testnet, find your local testnet blockchain:

cd ~/.bitcoin/testnet3/blocks

Concatenate all your blkxxxxx.dat files and place the result in bootstrap.dat:

cat blk* > bootstrap.dat

Warning: Using tar -cf (as instructed by this answer) did not work for me. I'm importing from bitcoind into btcd.

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It should be as easy as

cd /home/USER/.bitcoin/blocks

tar -cf bootstrap.dat blk*

For dogecoin just change the directory to match

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  • Pretty sure that just creates a tarfile with the blk files in it.
    – Nick ODell
    Dec 16, 2014 at 0:38
  • ya bitcoind seems to recognize that format just fine. might not be a true bootstrap but i have used it successfully on older bitcoin clones. Might not work the same these days. Ill test tonight and update my post as needed
    – Mullick
    Dec 21, 2014 at 4:15
  • @Mullick: Were you able to confirm your solution?
    – Murch ♦
    May 12, 2015 at 8:18

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