The snapshot in this folder is made from one of our running ZCoin servers - we've compressed it with lz4
instead of gzip, as it allows it to be decompressed easily during the download process, thanks to it being much 
faster than gzip.

Note: it is only updated occasionally by hand. if you would like us to update this snapshot, please contact us:
https://www.privex.io/contact/

========================================================================================================================================

This file server (files.privex.io) is operated by Privex Inc. https://www.privex.io - it uses our very own self-hosted GeoDNS to 
automatically direct you to the closest file server (we have one in each of these countries: Germany, Finland and Sweden).

If you experience download speed issues when using files.privex.io - try using one of the country-specific servers directly:

 - de1.files.privex.io (Germany, 1gbps dedicated)
 - se1.files.privex.io (Sweden, 10gbps dedicated)
 - fin1.files.privex.io (Finland, 1gbps dedicated)

========================================================================================================================================

As of today (Sun 22 Mar 2020), the file `snapshot.tar.lz4` contains a snapshot of the ZCoin blockchain at:

    ZCoin Block: 251868
    Update Time: Sun Mar 22 07:26:00 UTC 2019 

For Ubuntu, you may need to install lz4 using:

    apt update -qy
    apt install -y liblz4-tool

To download this snapshot efficiently, make sure to download over HTTP (not HTTPS), as SSL severely impedes the download speed. 
You should decompress it on the fly with lz4 as below, allowing it to decompress while downloading, instead of after downloading:

    cd ~/.zcoin/
    
    # Download the .tar.lz4 and pipe it into lz4, allowing it to be decompressed on-the-fly while it downloads,
    # and outputted uncompressed to the file `snapshot.tar`
    curl -fsSL http://files.privex.io/blockchains/zcoin/snapshot.tar.lz4 -o - | lz4 -d - snapshot.tar
    
    # Extract the files from the .tar, and then remove the original .tar file
    tar xvf snapshot.tar && rm snapshot.tar

    # Re-index ZCoin using the snapshot
    zcoind -daemon -reindex

If you have the space to hold the original compressed file during decompression, and want a guaranteed reliable download,
then you may use rsync like so:

    cd ~/.zcoin/
    # Download the .tar.lz4 using rsync. It will automatically checksum the file as it downloads, ensuring no corruption,
    # and if there's a connection error, it will resume without any issues.
    rsync -av --progress --partial-dir='.rsync-partial' rsync://files.privex.io/blockchains/zcoin/snapshot.tar.lz4 .

    # Decompress the tar file with lz4
    # Note: LZ4 does not delete the original lz4 file. You may wish to delete snapshot.tar.lz4 after it's decompressed
    lz4 -d snapshot.tar.lz4 && rm -vi snapshot.tar.lz4
    
    # Extract the files from the .tar, and then remove the original .tar file
    tar xvf snapshot.tar && rm snapshot.tar

    # Re-index ZCoin using the snapshot
    zcoind -daemon -reindex