Hope you are all safe and well. After having finalized our plans for WLM integration into the Commons app based on community feedback (https://commons.wikimedia.org/wiki/Commons:Mobile_app/WLM , which was posted to this mailing list a couple of months ago), we have started work on implementation.
We have run into a bit of an issue, however, that we are hoping to get help with. The initial plan (based on the discussion at https://lists.wikimedia.org/pipermail/wikilovesmonuments/2020-July/009263.html and at the abovementioned wiki page) was to use Wikidata as our data source, displaying all Wikidata items with the identifier property of P2186 (Wiki Loves Monuments ID) on our map.
However we have now found out that some countries don't use P2186 at all. Someone kindly linked https://www.wikidata.org/wiki/Wikidata:WikiProject_WLM/Status#Table to me, and based on that it seems that there is a rather large variety of identifiers that different countries use.
Realistically speaking, it would be really difficult for us to account for every possible identifier that every country uses, and it would also make stability and maintenance much more tricky. We can try, but it would be risky and tedious.
On the other hand, it was suggested to me that if there is WLM community consensus that P2186 should be used as a universal identifier, countries might be willing to adopt P2186 for the sake of harmonization.
Does anyone have any thoughts on this?
Josephine / User:misaochan, Commons app project lead
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