Wikidata:Property proposal/Indiana State Historical Marker Program numeric ID

Data type	External identifier
Domain	commemorative plaque (Q721747) or subclass
Allowed values	format of 21.1966.1 with exception for 02.19??.?, 10.194?.1, 24.19??.?, 71.19??.?, 88.19??.?, and K.Y.1963
Example 1	Bailly Homestead (Q111442474) find-historical-markers-by-county/indiana-historical-markers-by-county/bailly-homestead → 64.1949.1
Example 2	Fort Ouiatenon (Q111442456) fort-ouiatenon → 79.1998.2
Example 3	Maj Gen Ambrose E Burnside 1824-1881 (Q111442451) maj-gen-ambrose-e-burnside-1824-1881 → 81.1963.1
Example 4	battle-of-perryville → K.Y.1963
Example 5	whitewater-canal → 24.19??.?
Example 6	clarksville → 10.194?.1
Source	https://www.in.gov/history/state-historical-markers/find-a-marker/find-historical-markers-by-county/indiana-historical-markers-by-county/
Planned use	Add to Indiana State Historical Marker Program ID (P9546) as part of creation of commemorative plaques.
Number of IDs in source	equal to number Indiana State Historical Marker Program ID (P9546) IDs
Expected completeness	eventually complete (Q21873974)
Single-value constraint	yes
Distinct-values constraint	yes

Per the proposal for Indiana State Historical Marker Program ID (P9546) ideally the official ID not the URL would be used to identify the markers. Given the ID is not in the URL, but is the most reliable ID of identifying the marker if the URL changes. I'm proposing the use of this numeric ID property to be a required qualifier with any use of Indiana State Historical Marker Program ID (P9546). There is no current formatter URL which is the reason the string not numeric value is the ID currently used via P9546. Wolfgang8741 (talk) 17:13, 31 March 2022 (UTC)[reply]