#!/bin/bash
set -euf

latestparent=unknown
latestbits=0
while true
do
	echo $(date): checking for new blocks... >&2
	curl -s http://hash.h10a.de/?raw > latestinfo
	bits=$(head -1 latestinfo)
	parent=$(tail -n +2 latestinfo | sort -k2 -n|tail -1|cut -f1)
	if [ $parent != $latestparent ] || [ $bits != $latestbits ]; then
		latestparent=$parent
		latestbits=$bits
		echo $(date): new block found >&2
		echo $latestbits $latestparent
	fi
	sleep 3
done