When this link is followed on desktop it redirects to a regular tumblr.com/<user>/<post> URL. However, two additional parameters are present: _branch_match_id and _branch_referrer. These are connected to branch.io, which tracks individual users through links they click on.
When a user copies a link to a post from the Tumblr iOS and Android apps, it is in the form of an
at.tumblr.com/<user>/<post>link. Example: https://at.tumblr.com/staff/sorry-folks-weve-encountered-an-issue-with/tzkt4m74ukc1When this link is followed on desktop it redirects to a regular
tumblr.com/<user>/<post>URL. However, two additional parameters are present:_branch_match_idand_branch_referrer. These are connected to branch.io, which tracks individual users through links they click on.The URL the user is directed to, with tracking information looks like this: https://www.tumblr.com/staff/709334963461439488/sorry-folks-weve-encountered-an-issue-with?_branch_match_id=1100115598472293240&_branch_referrer=H4sIAAAAAAAAAwXBCwqAIBAFwBOtSyAE3cZsRfEX7jOp0zcTgVsPZgeDWc8yjO%2BVFS4E1j7GS6GXrLTkEZLm%2B2yQIRe5Rkl1Cq2EyPgybN3tzH77AXn0jGhTAAAA (this might generate different parameters for different individuals. I'm not sure.)
Without tracking information it looks like this: https://www.tumblr.com/staff/709334963461439488/sorry-folks-weve-encountered-an-issue-with
The URL is perfectly functional without the tracking information.