diff --git a/install/INSTALL.sh b/install/INSTALL.sh
index 5ad719e..406fe6e 100755
--- a/install/INSTALL.sh
+++ b/install/INSTALL.sh
@@ -41,6 +41,11 @@ mv $SRC_DIR/hooks $CONFDIR/glacier
 mv $SRC_DIR/post-hooks $CONFDIR/glacier
 mv $SRC_DIR/hooks.sh $CONFDIR/glacier
 mv $SRC_DIR/make.conf $CONFDIR
+mv $SRC_DIR/glacier-integrity-check $PREFIX/bin
+	if [ "$?" != "0" ]; then
+		mv $SRC_DIR/glacier-integrity-check $PREFIX
+		printf "directory $PREFIX/bin does not exist, moving to $PREFIX instead\n"
+	fi
 
 printf "finished installation\n"
 exit 0
diff --git a/src/glacier b/src/glacier
index 54ba83e..0634526 100755
--- a/src/glacier
+++ b/src/glacier
@@ -17,21 +17,22 @@ get_pkg() {
 				printf "$red[ $error ]$reset Package '$2' not found.\n"
 				exit 1
 			fi
+		$GLACIER_DOWNLOAD_BACKEND $GREPO1/$2.checksum || $GLACIER_DOWNLOAD_BACKEND $GREPO2/$2.checksum || $GLACIER_DOWNLOAD_BACKEND $GREPO3/$2.checksum || $GLACIER_DOWNLOAD_BACKEND $GREPO4/$2.checksum || $GLACIER_DOWNLOAD_BACKEND $GREPO5/$2.checksum || $GLACIER_DOWNLOAD_BACKEND $GREPO6/$2.checksum || $GLACIER_DOWNLOAD_BACKEND $GREPO7/$2.checksum || $GLACIER_DOWNLOAD_BACKEND $GREPO8/$2.tar.gz
+			if [ "$?" != "0" ]; then
+				printf "$red[ $error ]$reset Package checksum not found.\n"
+				exit 1
+			fi
 }
 
-# implementing this later because this whole section is a clusterfuck
-#int_check () {
-#	printf "$blue[ i ]$reset Checking package integrity...\n"
-#		LOCAL_CHECKSUM=$(cat $2.checksum)
-#		hsh $2.tar.gz $LOCAL_CHECKSUM
-#			if [ "$?" != "0" ]; then
-#				printf "$red[ $error ]$reset Integrity check failed.\n"
-#				exit 1
-#			else
-#				printf "$green[ $check ]$reset Integrity check passed.\n"
-#				exit 0
-#			fi
-#}
+int_check() {
+	printf "$blue[ i ]$reset Checking package integrity...\n"
+		/usr/bin/glacier-integrity-check
+			if [ "$?" != "0" ]; then
+				printf "$red[ $error ]$reset Integrity check failed.\n"
+				exit 1
+			fi
+		printf "$green[ $check ]$reset Integrity check passed.\n"
+}
 
 unpack_pkg() {
 	printf "$blue[ i ]$reset Unpacking $2.tar.gz...\n"
@@ -108,7 +109,7 @@ clear_cache() {
 }
 
 debug_info() {
-	printf "$blue>> Glacier v3.0.1$reset\n"
+	printf "$blue>> Glacier v3.1.0$reset\n"
 	printf ">> Checking for valid download backend...\n"
 		whereis wget
 		whereis curl
@@ -196,7 +197,7 @@ case $1 in
 		exit 0
 	;;
 	-v|--version)
-		printf "$blue Glacier v3.0.1$reset\n"
+		printf "$blue Glacier v3.1.0$reset\n"
 		exit 0
 	;;
 	-f|-install)
@@ -204,14 +205,14 @@ case $1 in
 			printf "$red[ $error ]$reset Please run Glacier as root.\n"
 			exit 1
 		fi
-	
+
 		printf "$blue[ i ]$reset Installing package '$2'.\n"
 		read -p "$(printf "$blue[ ? ]$reset Proceed with this operation? (y/n) ")" -n 1 -r
 			if [[ $REPLY =~ ^[Yy]$ ]]; then
 				cd /opt/glacier/workspace
 				printf "\n"
 				get_pkg "$@"
-				#int_check # Will implement this later on
+				int_check # Will implement this later on
 				unpack_pkg "$@"
 				installpkg "$@"
 				post_hooks "$@"
@@ -232,7 +233,7 @@ case $1 in
 				cd /opt/glacier/workspace
 				printf "\n"
 				get_pkg "$@"
-				#int_check
+				int_check
 				unpack_pkg "$@"
 				updatepkg "$@"
 				post_hooks "$@"
@@ -253,7 +254,7 @@ case $1 in
 				cd /opt/glacier/workspace
 				printf "\n"
 				get_pkg "$@"
-				#int_check
+				int_check
 				unpack_pkg "$@"
 				removepkg "$@"
 				post_hooks "$@"
@@ -278,6 +279,7 @@ case $1 in
 				cd /var/cache/glacier
 				printf "\n"
 				get_pkg "$@"
+				int_check
 				printf "$green[ $check ]$reset Operation completed.\n"
 				exit 0
 			fi
diff --git a/src/glacier-integrity-check b/src/glacier-integrity-check
new file mode 100755
index 0000000..34dc42f
--- /dev/null
+++ b/src/glacier-integrity-check
@@ -0,0 +1,17 @@
+#!/usr/bin/python3
+
+import sys
+import os
+
+LOCAL_SUM=os.system("cat *.checksum")
+PKG_SUM=os.system("sha256sum *.tar.gz")
+
+if LOCAL_SUM == PKG_SUM:
+	print("checksums match\n")
+	sys.exit(0)
+elif LOCAL_SUM != PKG_SUM:
+	print("checksums do not match\n")
+	sys.exit(1)
+else:
+	print("an error occured\n")
+	sys.exit(1)
diff --git a/src/post-hooks b/src/post-hooks
old mode 100644
new mode 100755