I made an updated bootstrap.dat file for people having trouble syncing their client.

It goes up to block 1720900 which was staked on Sun Oct  8 23:57:52 UTC 2017.

It's available as a download here:

  bootstrap.dat

or as a torrent here:

  bootstrap.dat.torrent

Download it, put it into the same folder as your CLAM wallet.dat, then restart the client.

If you are using the QT client, it will say "importing blocks" in the lower left corner while the bootstrap.dat file is imported. That is how you can tell that the file is being used.

It will take a while to import it, but it will be a lot faster than trying to sync using the p2p network.

When it is done, the client will rename the file to bootstrap.dat.old and won't look at it again.

Once it has been renamed you can delete it if you like.

To verify that you have the right file:


Edit: I also made a series of 'partial' bootstrap files. Each one contains the block data for 10,000 blocks.

  https://s3.amazonaws.com/dooglus/bootstrap-000.dat is blocks 0 through 9999
  https://s3.amazonaws.com/dooglus/bootstrap-001.dat is blocks 10000 through 19999
  https://s3.amazonaws.com/dooglus/bootstrap-002.dat is blocks 20000 through 29999
  etc.

I'll add a new one for each new set of 10k blocks. Currently they go up to bootstrap-171.dat

So if you already have everything up to block 492123 and want to get up to date, download the -049, -050, etc. files, append them all together in order into bootstrap.dat in the same folder as your CLAM wallet.dat and restart the client.

In Windows you can append the files together by running "cmd", and using something like:


In Linux the command would be: