Wikidata:Property proposal/Delaware Department of State file number

Delaware Department of State file number

Originally proposed at Wikidata:Property proposal/Organization

   Done: Delaware Division of Corporations file number (P10871) (Talk and documentation)

Description	number associated with entities registered with the Delaware Division of Corporations (Q87326346)
Data type	External identifier
Domain	Delaware corporation (Q88537331)
Allowed values	numeric identifier
Example 1	Cloudflare (Q4778915) → 4710875
Example 2	Google (Q95) → 3582691
Example 3	DuPont (Q221062) → 48306
Example 4	Amazon (Q3884) → 2620453
Source	The Delaware Division of Corporations (Q87326346) issues file numbers for each entity registered with the Department, and makes these numbers searchable on the Delaware Corporate Information System (Q87329016)
Planned use	I realized this was missing when filling out the identifiers for Cloudflare (Q4778915). I'm not a prolific editor, so I'm not planning on backfilling this information into many other pages, but it should be added to Wikidata:WikiProject Companies/Properties so that future additions and edits can be made aware this a property that can be added.
Number of IDs in source	Millions - they appear to be serial and Cloudflare (Q4778915)'s is 4,710,875. Also, the Delaware Division of Corporations (Q87326346) claims there are over 1,000,000 corporations registered in Delaware: https://corp.delaware.gov/aboutagency/.
Expected completeness	always incomplete (Q21873886)
See also	IRS Employer Identification Number (P1297) (Internal Revenue Service (Q973587)'s file number for an organization), Companies House company ID (P2622) (United Kingdom (Q145) equivalent), Companies Registration Office (Ireland) Registration Number (P9679) (Republic of Ireland (Q27) equivalent), KvK company ID (P3220) (Netherlands (Q55) equivalent)
Wikidata project	Probably WikiProject Companies (Q15271936)?

Motivation

We have properties for entity file numbers in many other jurisdictions. I figure Delaware is a great place to start for adding American entity file numbers, since (according to the Delaware Division of Corporations (Q87326346)) more than 66 percent of the Fortune 500 are Delaware corporations. PiperMcCorkle (talk) 23:42, 10 May 2022 (UTC)

Discussion

•  Support Yes Delaware is one of the main places corporations are registered in the US. Is there a formatter URL that would allow linking to more information about these id's (and confirming them)? ArthurPSmith (talk) 13:25, 12 May 2022 (UTC)
•  Support Germartin1 (talk) 16:09, 29 May 2022 (UTC)
•  Comment these ids can be linked through OpenCorporates (Q7095760) e.g. https://opencorporates.com/companies/us_de/4710875 -- Nintendofan885^{T&Cs apply} 21:11, 30 June 2022 (UTC)
•  Support It doesn't seem the official site can accept query strings. I think using the formatter https://opencorporates.com/companies/us_de/$1 mentioned by Nintendofan885 is a good idea. Chchowmein (talk) 00:46, 1 July 2022 (UTC)
• @PiperMcCorkle, ArthurPSmith, Germartin1, Nintendofan885, Chchowmein:  Done as Delaware Division of Corporations file number (P10871). UWashPrincipalCataloger (talk) 02:52, 18 July 2022 (UTC)