<p><img src="https://images.cointelegraph.com/images/840_aHR0cHM6Ly9zMy5jb2ludGVsZWdyYXBoLmNvbS91cGxvYWRzLzIwMjItMDkvYzA4ZDM4ODgtYjdmYy00YmMxLWEwNmEtNmI5M2JmNDU5MGQ5LmpwZw==.jpg"></p><p>Nonfungible tokens are being used to reinvigorate post stamp collecting in Austria and the Netherlands.</p>