diff --git a/tag.sh b/tag.sh
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+++ b/tag.sh
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+#!/bin/bash
+
+#    tag.sh - script to automate the checkpointing and packaging process 
+#    Copyright (C) 2020 wowario
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License as published by
+#    the Free Software Foundation, either version 3 of the License, or
+#    (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU General Public License for more details.
+#
+#    You should have received a copy of the GNU General Public License
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+#
+# install jq (brew install jq | apt-get install jq)
+# for mac, intall gnu sed with: brew install gnu-sed
+# and echo 'export PATH="/usr/local/opt/gnu-sed/libexec/gnubin:$PATH"' >> ~/.bashrc
+# run wownerod --detach and sync up before running script
+
+# set parameter as version
+version=$1
+
+# error out if version not set
+if [ $# -eq 0 ]; then
+	echo "include version as a parameter (./tag.sh 0.8.0.2)"
+	exit 1
+fi
+
+# OS check
+if [[ "$OSTYPE" == "linux-gnu"* ]]; then
+	wowdir=/home/ubuntu/wownero
+	platform=Linux_v
+	usrdir=/home/ubuntu
+	wowdir=/home/ubuntu/wownero
+	release=release-static-linux-x86_64
+elif [[ "$OSTYPE" == "darwin"* ]]; then
+	platform=macOS_v
+	usrdir=/Users/administrator
+	wowdir=/Users/administrator/gits/wownero
+	release=release-static-mac-x86_64
+else
+	echo "Unknown OS"
+fi
+
+# echo version to tag
+echo "Building tagged version: wownero_$platform$version"
+
+# logging
+exec > >(tee -i $usrdir/logs/tag.log)
+exec 2>&1
+
+# update repo
+echo "Updating repo"
+cd $wowdir
+rm -rf build
+git checkout .
+git fetch --all
+git pull
+
+# checkpoint
+cd $usrdir/utilities/
+./wownerod status
+echo "Checkpointing"
+height=$(curl -s http://127.0.0.1:34568/json_rpc -d '{"jsonrpc":"2.0","id":"0","method":"get_info"}' -H 'Content-Type: application/json' | jq -r '.result.height')
+echo "Starting height: $height"
+declare -i value
+value=$height-60
+echo "Roll back 60 blocks. New height: $value"
+sha1=$(sha256sum $wowdir/src/blocks/checkpoints.dat | awk '{print $1}')
+echo "Old SHA-256: $sha1"
+rm -rf $wowdir/src/blocks/checkpoints.dat
+./wownero-blockchain-export --blocksdat --block-stop $value --output-file $wowdir/src/blocks/checkpoints.dat &
+sleep 20s
+sha2=$(sha256sum $wowdir/src/blocks/checkpoints.dat | awk '{print $1}')
+echo "New SHA-256: $sha2"
+cd $wowdir/src/cryptonote_core/
+sed -i "s/$sha1/$sha2/g" blockchain.cpp
+cd $wowdir
+git status
+git diff
+
+# build Wownero
+echo "Building Wownero"
+USE_SINGLE_BUILDDIR=1 make -j3 $release > /dev/null 2>&1
+
+# archive binaries
+echo "taring the binaries"
+cd $wowdir/build/release/bin
+tar -cvjSf wownero_$platform$version.tar.bz2 *
+sha256sum $wowdir/build/release/bin/wownero_$platform$version.tar.bz2
+
+# copy archive file to release folder
+echo -e "\e[42mmoving tar file to release folder"
+mv $wowdir/build/release/bin/wownero_$platform$version.tar.bz2 $usrdir/release/wownero_$platform$version.tar.bz2
+sha256sum $usrdir/release/wownero_$platform$version.tar.bz2
+echo "done!"