Property talk:P3430

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SNAC ARK ID
identifier for items in the Social Networks and Archival Context system

Associated item	SNAC (Q29861311)
Applicable "stated in" value	SNAC (Q29861311)
Data type	External identifier
Domain	According to this template: people, archives, libraries According to statements in the property: human (Q5), organization (Q43229) or vehicle (Q42889) When possible, data should only be stored as statements
Allowed values	\d*[A-Za-z][0-9A-Za-z]*
Usage notes	NOT to be used for generic social networks (Twitter, Facebook, LinkedIn, etc)
Example	Ezra Pound (Q163366) → w6650f4k Conrad Aiken (Q380645) → w62w357r
Source	https://snaccooperative.org/
Formatter URL	https://snaccooperative.org/ark:/99166/$1
Tracking: usage	Category:Pages with SNAC-ID identifiers (Q37412611)
Lists	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 external identifier 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 Map of people by place values: place of birth educated at work location residence place of death place of burial January 1st dates People with date of birth on January 1 People with date of death on January 1 People with both dates on January 1 Mix'n'match (Report) Database reports/Constraint violations/P3430 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 253,838 Main statement 143,776 56.6% of uses Qualifier 3 <0.1% of uses Reference 110,059 43.4% of uses
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[create Create a translatable help page (preferably in English) for this property to be included here]

Distinct values: this property likely contains a value that is different from all other items. (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/P3430#Unique value, SPARQL (every item), SPARQL (by value)

Single value: this property generally contains a single value. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303). Known exceptions: Guthrie Cortland Medical Center (Q64160636), Lexington Medical Society (Q64153731), United States Copyright Office (Q1784058), Moses Hallett (Q6915801), Sheldon S. Cohen (Q56523001), Maryland State House (Q1858066), Notre Dame des Neiges Cemetery (Q507432), Union Station (Q861473), Harvard Law Library (Q18719675), Martha Cook Building (Q21188466), Toni Morrison (Q72334)
List of violations of this constraint: Database reports/Constraint violations/P3430#Single value, SPARQL

Format “\d*[A-Za-z][0-9A-Za-z]*”: value must be formatted using this pattern (PCRE syntax). (Help)

List of violations of this constraint: Database reports/Constraint violations/P3430#Format, hourly updated report, SPARQL

Type “human (Q5), organization (Q43229), vehicle (Q42889)”: item must contain property “instance of (P31)” with classes “human (Q5), organization (Q43229), vehicle (Q42889)” 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). Known exceptions: Q289957, Q4712089, Q5490062, Q488659, Q1070564, Q1858066, Q693032, Q1111004, Q35525, Q507432, Q7354368, Q1950363, Q5116657, Q6970416, Q130838, Q390776, Q319506, Q605937, Q861473, Q585962, Q6879416, Q1491417, Q378527, Q21188466, Q1054478
List of violations of this constraint: Database reports/Constraint violations/P3430#Type Q5, Q43229, Q42889, SPARQL

Scope is as main value (Q54828448), as reference (Q54828450): the property must be used by specified way only (Help)

List of violations of this constraint: Database reports/Constraint violations/P3430#Scope, hourly updated report, 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/P3430#Entity types

This property is being used by: ko:틀:위키데이터 속성 추적 Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)

Formatter URL & ID type

Moved here from my talk page - Andy Mabbett (Pigsonthewing); Talk to Andy; Andy's edits 20:54, 11 October 2017 (UTC)

I fixed the SNAC ID formatter URL to be "http://snaccooperative.org/view/$1" as the old one was not working. I was just talking to the National Archives SNAC liaison Dina Herbert and she said that should be the stable URL now. Thanks! -- Fuzheado (talk) 16:47, 11 October 2017 (UTC)

@Fuzheado: Please can you check that? The few I tested, including examples on the property page (after purging), don't seem to work. Andy Mabbett (Pigsonthewing); Talk to Andy; Andy's edits 16:52, 11 October 2017 (UTC)

@Pigsonthewing: - Yikes we have a problem! Seems that SNAC now has a formal "SNAC ID" which is an all-numerical ID. The older string we were using is a permalink identifier, but not a proper SNAC ID. See this entry for an example [1] - We are storing "w6c53p0c" but the actual SNAC ID from them is 7750326. We probably need to do a massive bot sweep to convert them. -- Fuzheado (talk) 17:12, 11 October 2017 (UTC)

@Fuzheado: - The arks are still generated and considered to be the preferred link into snac. That formatter URL is "http://snaccooperative.org/ark:/99166/$1". The SNAC ID (the all-numeric ID in SNAC) is an internal identifier, which we may want to rename because of the confusion it has caused. -- Robbie Hott

@Deternitydx: - Thanks for the explanation. The revert to the ark: URL is justified. For now. But I'm still rather concerned – it seems like the simpler URL and the official-sounding "SNAC ID" is what is being put forth to the public as the user-friendly identifier. Is there a more complete explanation for when "permalink" should be used or when "SNAC ID" should be used?

The reason I'm concerned is that from the gallery shown on the front of http://snaccooperative.org/, if you click on an entry, you get sent to URL http://snaccooperative.org/view/24021813, and not http://n2t.net/ark:/99166/w60329t3. This would seem to indicate that the simpler URL is more highly visible. I'd like to find out more background before we make a decision either way, on whether to re-title our property P3430 SNAC ARK ID (P3430) to SNAC permalink or, in fact, convert IDs of the form w60329t3 to someething like 24021813 en masse, for about 148,000 entries. The latter is not hard, but it is a big change. Thanks. -- Fuzheado (talk) 20:33, 11 October 2017 (UTC)

@Fuzheado: - Thanks. Currently, we are unfortunately using two different URLs for the same content, but SNAC's governance wants to keep the additional perceived permanence provided by using Arks and the n2t Ark resolver. For now, we've simplified the nomenclature ("SNAC Ark ID" in Wikidata and "Ark ID" in our site), changes that should be reflected on snaccooperative.org in the next day or two. -- Robbie Hott

@Deternitydx, Pigsonthewing: - Thanks, this sounds like a reasonable direction. However, perhaps you can help with this - can we come up with a more specific "format as regular expression" for these Ark IDs? Right now it's a very generic [a-z0-9]+ but it seems like if we could provide a more rigid match, then our constraint reporting could warn folks if they inputted the wrong type of ID. Reason I ask is that right now I see it was not just me who made the error of using the all numerical "SNAC ID" from your site. I see a number of other instances of this error. Is that Ark identifier always 8 characters, and do they always start with "w6"? This way, we could have a more precise regexp like "^w6([a-z0-9]){6}" or the like, which would warn folks early if they're inputting something that doesn't conform. Thanks. -- Fuzheado (talk) 02:57, 12 October 2017 (UTC)

@Fuzheado: - Right now, our Arks all start with "w6" but I am unsure if they will continue to do so. That identifier is generated from the California Digital Library's EZID service. I can tell you that the 3.7M we have and the next 400k we assign will have that prefix, but after that we are switching to a different method for minting the Ark values which could produce different results. One safe regex would be to enforce at least one alpha character so that the all-numeric IDs will throw an error.

@Deternitydx, Pigsonthewing: Done. I've changed the property constraint: format constraint to reflect this. [2] -- Fuzheado (talk) 00:59, 24 October 2017 (UTC)

SNAC ID vs. SNAC Ark ID

The identifier we are currently using (SNAC Ark ID) is a subfield/subidentifier of an Archival Resource Key (Q2860403) (so this situation is similar to how digital object identifier (Q25670) is a part of Handle System (Q3126718)). It would be nice to be able to switch to "SNAC ID" but I am sure that would require a significant (and likely robotic) change. 50.53.21.2 23:36, 25 August 2019 (UTC)