root@Redman:~# apt-cache madison chromium-browser
chromium-browser | 60.0.3112.78-0ubuntu1.1363 | http://us.archive.ubuntu.com/ubuntu artful/universe amd64 Packages
chromium-browser | 62.0.3188.2-0ubuntu1~ppa1~17.10.1 | http://ppa.launchpad.net/saiarcot895/chromium-dev/ubuntu artful/main Sources

root@Redman:~# apt-cache policy chromium-browser
chromium-browser:
  Installed: 60.0.3112.78-0ubuntu1.1363
  Candidate: 60.0.3112.78-0ubuntu1.1363
  Version table:
 *** 60.0.3112.78-0ubuntu1.1363 500
        500 http://us.archive.ubuntu.com/ubuntu artful/universe amd64 Packages
        100 /var/lib/dpkg/status