Property talk:P7457

Documentation

• Start a query
• Current uses
• Statistics by class
• File extension
• List of qualifiers
• Count

creator's signature
image of the artist's mark on the work that identifies their work

Represents	signature (Q1373131)
Data type	Commons media file
Domain	work of art (Q838948)
Allowed values	(?i).+\.(jpg|jpeg|jpe|png|svg|tif|tiff|gif|xcf|pdf|djvu|webp)
Example	Adam (Q27697307) → Duerermonogramm Adam 1507.jpg The Annunciation, with Saint Emidius (Q642198) → Carlo crivelli, annunciazione con sant'emidio, dalla chiesa dell'annunciazione ad ascoli 12 firma.jpg Copper statue of Saint Thomas (Q70920699) → Villach Obere Fellach Kupferblech-Statue hl Thomas Monogramm des Kunstschmieds 26062017 9883.jpg Painting with White Form (Q71127828) → Wassily kandinsky, dipinto con forma bianca, 1913, 02 firma.jpg
Formatter URL	https://commons.wikimedia.org/wiki/File:$1
Embed URL	https://commons.wikimedia.org/wiki/File:$1
See also	image (P18), signature (P109), monogram (P1543), creator (P170), image with color chart (P10093), image of backside (P7417), image with frame (P7420)
Lists	c:Pinxit c:Sculpsit Items with the most statements of this property Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the fewest sitelinks Most linked wikis Items with the most identifier properties Items with no other statements Most recently created items Items with novalue claims Items with unknown value claims Usage history (total) Usage history (main statement) Chart by item creation date Database reports/Constraint violations/P7457 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 425 Main statement 421 99.1% of uses Qualifier 4 0.9% of uses

[create Create a translatable help page (preferably in English) for this property to be included here]

Link to Commons namespace “File”: this property should contain a well-formed link to an existing page on Wikimedia Commons. (Help)

List of violations of this constraint: Database reports/Constraint violations/P7457#Commons link, hourly updated report

Format “(?i).+\.(jpg|jpeg|jpe|png|svg|tif|tiff|gif|xcf|pdf|djvu|webp)”: value must be formatted using this pattern (PCRE syntax). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P7457#Format, SPARQL

Type “work of art (Q838948)”: item must contain property “instance of (P31)” with classes “work of art (Q838948)” or their subclasses (defined using subclass of (P279)). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P7457#Type Q838948, SPARQL

Scope is as main value (Q54828448): the property must be used by specified way only (Help)

List of violations of this constraint: Database reports/Constraint violations/P7457#Scope, hourly updated report, SPARQL

Item “creator (P170)”: Items with this property should also have “creator (P170)”. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P7457#Item P170, SPARQL

Item “image (P18)”: Items with this property should also have “image (P18)”. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P7457#Item P18, SPARQL

Allowed entity types are Wikibase item (Q29934200): the property may only be used on a certain entity type (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P7457#Entity types

Is this property needed?

Wouldn't someworkinscription (P1684)somesignatureimage (P18)creator's signature image do in a more general way? That's how I've expressed this so far I think. --Marsupium (talk) 20:21, 24 October 2019 (UTC)

• That seems to be fairly rare and would require an additional qualifier to ensure that it's actually the signature. --- Jura 18:12, 30 October 2019 (UTC)

Related queries: Who could be "J.B. 1670" and "D.K. 1964"?

To answer a question by Herzi Pinki on Wikidata:Request a query:

• Items used: visual artist (Q3391743)   

• Properties used: date of birth (P569)   , date of death (P570)   , given name (P735)   , native label (P1705)   , family name (P734)   , occupation (P106)   , subclass of (P279)   , signature (P109)   

# search for artist J.B. active in 1670
SELECT DISTINCT ?item ?d1 ?d2 ?nl0 ?nl1 ?itemDescription ?sig
WHERE
{
    ?item wdt:P569 ?d1 ; wdt:P570 ?d2 .
    hint:Prior hint:rangeSafe true .
    FILTER( ?d1 > "1600-00-00"^^xsd:dateTime &&
            ?d2 > "1670-00-00"^^xsd:dateTime &&
            ?d1 < "1671-00-00"^^xsd:dateTime
          )
    ?item wdt:P735 / wdt:P1705 ?nl0 . FILTER( REGEX(?nl0, "^J" ) )
    ?item wdt:P734 / wdt:P1705 ?nl1 . FILTER( REGEX(?nl1, "^B" ) )
    ?item wdt:P106/wdt:P279* wd:Q3391743 .
     hint:Prior hint:gearing "forward".   
    OPTIONAL { ?item wdt:P109 ?sig }
    SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
}

Try it!

• Items used: visual artist (Q3391743)   

• Properties used: date of birth (P569)   , date of death (P570)   , given name (P735)   , native label (P1705)   , family name (P734)   , occupation (P106)   , subclass of (P279)   , signature (P109)   

# search for artist D.K. active in 1964
SELECT DISTINCT ?item ?d1 ?d2 ?nl0 ?nl1 ?itemDescription ?sig 
WHERE
{
    ?item wdt:P569 ?d1 ; wdt:P570 ?d2 .
    hint:Prior hint:rangeSafe true .
    FILTER( ?d1 > "1880-00-00"^^xsd:dateTime &&
            ?d2 > "1964-00-00"^^xsd:dateTime &&
            ?d1 < "1944-00-00"^^xsd:dateTime
          )
    ?item wdt:P735 / wdt:P1705 ?nl0 . FILTER( REGEX(?nl0, "^D" ) )
    ?item wdt:P734 / wdt:P1705 ?nl1 . FILTER( REGEX(?nl1, "^K" ) )
    ?item wdt:P106/wdt:P279* wd:Q3391743 .
     hint:Prior hint:gearing "forward".   
    OPTIONAL { ?item wdt:P109 ?sig }
    SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en" }
}

Try it! Sample image for the second query: image (see bottom right corner).

• Items used: visual artist (Q3391743)   

• Properties used: occupation (P106)   , subclass of (P279)   , given name (P735)   , family name (P734)   

# completeness P735/P734 for visual artists
SELECT
  (COUNT(DISTINCT ?item) as ?all)
  (COUNT(DISTINCT ?hasP735) as ?P735)
  (COUNT(DISTINCT ?hasP734) as ?P734)
WHERE
{
    ?item wdt:P106/wdt:P279* wd:Q3391743 .
    hint:Prior hint:gearing "forward".   
    OPTIONAL { ?item wdt:P735 [] . BIND(?item as ?hasP735) } 
    OPTIONAL { ?item wdt:P734 [] . BIND(?item as ?hasP734) } 
}

Try it!

There queries require:

• an item for the artist.
• item has P569 and P570
• item has P735 and P734
• ideally a P109 statement

--- Jura 18:02, 2 January 2021 (UTC)

---

this seems to be presenting a result, feel free to remove the disk after everything is cleared. I do not use creator's signature (P7457) for the artist, but think the description reserves it for the artwork. Which is a pity, as I feel it would be perfectly ok, to use it also for the artist (I have started c:Signatures of artists from Austria). And, your solution does not care for unknown dates of birth and artists still living. --Herzi Pinki (talk) 18:14, 2 January 2021 (UTC)

Indeeed, fixed ;) --- Jura 18:20, 2 January 2021 (UTC)