Maybe a solution would be a new tool acting as an interface? Use P2186 but also the other "national" properties/combinations.
- we can define the API
- we can adapt to any variation in tracking items, now or later
- we can remove individual solutions as the community migrates to P2186
- work
- slower service than wikidata proper
- no direct SPARQL
- likely needs to maintain its own database (for performance reasons), which needs to be kept in sync with Wikidata


On Thu, Apr 29, 2021 at 12:08 PM Paulo Santos Perneta <> wrote:
Correction: We are only using the PT prefix for IDs attributed for WMPT. When it's the monument ID, we give a prefix related to the ID used: SIPA, DGPC, etc. 
To descomplicate things, we are now simply using PT- QXXX (example: PT-Q99463700) for listed monuments not having a specific or clear monument ID.


Paulo Santos Perneta <> escreveu no dia quinta, 29/04/2021 à(s) 12:56:

For the Portuguese monuments we are using P2186 with a value prefixed by PT (to avoid ID conflicts) and followed by:
* A monument ID, when there is one
* An unique ID given by ourselves, when it's not practical to use the monument ID, or when there is no monument ID at all
in addition to that, we have a number of specific monument IDs, but we don't use them directly for WLM or WLE (and it was a mistake to even attempt to use them initially, it only brought a lot of confusion)

Personally, I support uniformization in P2186,  using country prefixes or some other strategy, in addition to any specific monument that may exist.


Josephine Lim <> escreveu no dia quinta, 29/04/2021 à(s) 10:28:
Hi all,

Hope you are all safe and well. After having finalized our plans for WLM integration into the Commons app based on community feedback ( , 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 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 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? 

Many thanks.

Best regards,
Josephine / User:misaochan, Commons app project lead
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