To upload packages to the PureOS archive via dput, use the following ~/.dput.cf snippet:
[pureos-ftp] fqdn = upload.pureos.net method = ftp incoming = ~/incoming/ login = anonymous
The upload might take about 20min to be processed (after the upload was fully completed).
If you want to get notification about any new upload that gets submitted to the archive, consider subscribing to the pureos-changes mailinglist.
Packages go into "landing" in Laniakea.